CN111715723A - Production equipment and control method of high-temperature high-pressure seamless steel pipe - Google Patents
Production equipment and control method of high-temperature high-pressure seamless steel pipe Download PDFInfo
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- CN111715723A CN111715723A CN202010533572.1A CN202010533572A CN111715723A CN 111715723 A CN111715723 A CN 111715723A CN 202010533572 A CN202010533572 A CN 202010533572A CN 111715723 A CN111715723 A CN 111715723A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 203
- 239000010959 steel Substances 0.000 title claims abstract description 203
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000000843 powder Substances 0.000 claims abstract description 70
- 239000002893 slag Substances 0.000 claims abstract description 45
- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 239000011521 glass Substances 0.000 claims abstract description 39
- 238000004512 die casting Methods 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000007751 thermal spraying Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 9
- 239000000155 melt Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 230000027455 binding Effects 0.000 claims description 65
- 238000009739 binding Methods 0.000 claims description 65
- 230000003028 elevating effect Effects 0.000 claims description 25
- 239000011214 refractory ceramic Substances 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 239000008234 soft water Substances 0.000 claims description 6
- 239000000156 glass melt Substances 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000008233 hard water Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 241000207961 Sesamum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses production equipment and a control method of a high-temperature high-pressure seamless steel pipe. Water pumped out by a water pump is sprayed from the inlet of the cooling flat pipe through an electric water regulating valve, the auxiliary material feeding machine feeds rare earth and other materials to the front section of the chute, the blade of the stirrer stirs the molten steel in the chute, and the ceramic screw die casting machine extrudes semi-solid molten steel with the crystallinity of 60-80%. The motor of the spiral feeding elevator and the core rod motor rotate, and the air plasma flame of the steel slag powder or glass powder thermal spraying device heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder on the hollow core rod. The ceramic valve is opened, and the molten steel is extruded from the annular molten iron and steel water outlet to be die-cast on a hollow core rod with a steel slag film or a glass film. The rolling rod motor rotates to drive the rolling rod to rotate, and the die-cast seamless steel pipe blank is uniformly rolled. Water pumped out by the water pump is sprayed into the hollow core rod from the upper end of the hollow core rod through the electromagnetic water valve, and the equilateral triangle lifting plate rises upwards to pull out the hollow core rod from the seamless steel pipe.
Description
The technical field is as follows:
the invention relates to production equipment and a control method of a high-temperature high-pressure seamless steel pipe.
Background art:
at present, the seamless steel pipe in China is formed by extruding molten steel smelted by a converter onto a core rod, longitudinally moving and rotating the core rod, and wrapping a layer of solidified molten steel on the core rod and pressing the solidified molten steel by a binding rod; and after the seamless steel pipe sleeved on the core rod is cooled, taking down the core rod, and then putting the core rod on a rod pulling machine to pull out the core rod. Because the seamless steel tube is tightly attached to the core rod, the rod is difficult to pull out, and the energy consumption of the rod is very large. The seamless steel tube looks like a dry paddy field under a microscope and has cracks in connection with the piece; when the pressure is increased from normal temperature and normal pressure to high temperature and high pressure or when the pressure is decreased from high temperature and high pressure to normal temperature and normal pressure, cracks on the seamless steel pipe can be enlarged. Such seamless steel pipes cannot be used in high temperature and high pressure equipment. The secondary heating boiler of the ultra-supercritical coal-fired power generating set heats water in a boiler water pipe to be more than 500 ℃, and the water pressure in the boiler water pipe is very high. Therefore, high-temperature and high-pressure water pipes are used as boiler water pipes.
The semi-solid casting method comprises the following steps: the water pump pumps water from the water pool, the water pressed out by the water pump is sprayed from the inlet of the cooling flat pipe through the electric water regulating valve, and the computer control instrument regulates the electric water regulating valve according to the data of the temperature sensor and the vibrometer; the auxiliary material feeding machine feeds the rare earth and other materials into the molten steel at the front section of the chute at a set speed and in a set proportion, a motor of the stirrer rotates, blades of the stirrer stir the molten steel in the chute, the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out of crystal nuclei are cut off when the molten steel is crystallized, the cut crystal branches form new crystal nuclei, and a ceramic spiral die casting machine extrudes the steel with the crystallinity of 60-80%, performs die casting on the steel into a die, and cools the steel to obtain a product.
The invention content is as follows:
a production device of a high-temperature high-pressure seamless steel pipe. The upper ends of three support rods of the spiral feeding elevator are fixed on the top angle of an equilateral triangle top plate of the spiral feeding elevator, the middle parts of the three support rods of the spiral feeding elevator are fixed on the top angle of an equilateral triangle bottom plate of the spiral feeding elevator, the lower ends of the three support rods of the spiral feeding elevator are fixed on a cement base, and a plurality of equilateral triangle connecting rods are arranged among the three support rods of the spiral feeding elevator. The upper ends of three screw rods of the spiral feeding lifter respectively penetrate through bearings on the top angles of an equilateral triangle top plate close to the spiral feeding lifter, then the upper ends of the three screw rods of the spiral feeding lifter are respectively provided with a screw rod driven gear, and the lower ends of the three screw rods of the spiral feeding lifter respectively penetrate through bearings on the top angles of an equilateral triangle bottom plate close to the spiral feeding lifter. A spiral feeding elevator motor is arranged on an equilateral triangle top plate of the spiral feeding elevator, an output gear of the spiral feeding elevator motor is meshed with three screw driven gears, and one screw driven gear of the spiral feeding elevator is meshed with a screw counter gear. Three screw rods of the spiral feeding elevator respectively penetrate through nuts on the apex angles of the equilateral triangle lifting plates of the spiral feeding elevator, the upper section of the hollow core rod is fixed at the central position of the equilateral triangle lifting plates of the spiral feeding elevator through a pressure bearing, the lower section of the hollow core rod penetrates through the central hole of the equilateral triangle bottom plate of the spiral feeding elevator, and a core rod gear is arranged at the upper end of the hollow core rod. The equilateral triangle lifting plate of the spiral feeding lifter is provided with a core rod motor, and an output gear of the core rod motor is meshed with a core rod gear. The annular molten steel water outlet is fixed on an equilateral triangle connecting rod of a spiral feeding lifter below a spiral feeding device of the annular sealer, the annular molten steel water outlet is sleeved on the hollow core rod, the annular sealer seals the upper surface of the annular molten steel water outlet, and the annular sealer is pressed into or pulled out of the annular molten steel water outlet through the spiral feeding device of the annular sealer. The ceramic valve is arranged on the refractory ceramic pipe between the ceramic spiral die-casting machine and the annular molten steel outlet, and the heat-insulating pipe is sleeved outside the refractory ceramic pipe between the annular molten steel outlet and the ceramic valve. Three arc-shaped plates are arranged below the annular molten steel water outlet to seal the lower surface of the annular molten steel water outlet, the three electromagnets are electrified to enable the three arc-shaped plates to rotate downwards by 60 degrees, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding lifter. The three hands of the rod releasing device are driven by the spiral feeding device of the rod releasing device to extend out and press the upper end of the seamless steel pipe, and the three hands of the rod releasing device are fixed on an equilateral triangle connecting rod of the spiral feeding lifter by the spiral feeding device of the rod releasing device. A plurality of stick binding devices are arranged below the stick releasing device, each stick binding device is composed of three stick bindings with the radian of 120 degrees, the stick bindings of each stick binding device 12 are fixed on an equilateral triangle connecting rod of the spiral feeding elevator through stick binding spiral feeding devices, the gear of each stick binding spiral feeding device is meshed with a stick binding counter gear, and the output gear of a stick binding motor is meshed with the stick binding gear. And a robot and a metal belt conveyor are arranged beside the lower part of the support rod behind the last group of stick binding devices. A water pool is arranged beside the cement base, and a water pump is arranged above the water pool. Soft water from the water pump is connected to the upper end of the hollow core rod via the electromagnetic water valve, and a movable mechanical sealing ring is arranged between the upper end of the hollow core rod and the outlet of the soft water pipe. The steel slag powder or glass powder thermal spraying device is fixed on an equilateral triangle connecting rod between an equilateral triangle base plate of the spiral feeding elevator and the annular sealing device, and the air plasma flame of the steel slag powder or glass powder thermal spraying device heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core rod. The ceramic spiral die casting machine presses the semi-solid molten steel into the annular molten steel water outlet through the opened ceramic valve. An annular burner is sleeved outside the annular molten steel water outlet, and flue gas generated by the annular burner enters a gap between the refractory ceramic pipe and the heat-insulating pipe.
A control method of high-temperature high-pressure seamless steel tube production equipment. The semi-solid die casting equipment consists of a chute, a cooling flat pipe, a stirrer, a ceramic spiral die casting machine, a temperature sensor, a vibrometer and a computer controller. The cooling flat pipe is arranged below the chute, a hard water pipe connected from a water pump is connected to a water spray nozzle at the inlet of the cooling flat pipe through an electric regulating water valve, a probe of a temperature sensor is buried in the molten steel at the front section of the chute, the auxiliary material feeding machine is arranged above the front section of the chute, a blade of a stirrer is buried in the molten steel at the chute, a probe of a vibrometer is buried in the molten steel at the rear section of the chute, and a ceramic spiral die casting machine is arranged at the tail end of the chute. The water pump pumps water from the water tank, the water pressed out by the water pump is sprayed from the inlet of the cooling flat pipe through the electric water regulating valve, and the computer control instrument regulates the electric water regulating valve according to the data of the temperature sensor and the vibrometer. The auxiliary material throwing machine throws the rare earth and other materials into the molten steel at the front section of the chute at a set speed and in a set proportion, a motor of the stirrer rotates, blades of the stirrer stir the molten steel in the chute, the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out of crystal nuclei are cut off when the molten steel is crystallized, the cut crystal branches form new crystal nuclei, and the ceramic spiral die casting machine extrudes the semi-solid molten steel with the crystallinity of 60-80%. The computer controller makes the motor of the screw feeding elevator rotate clockwise to drive the three screws of the screw feeding elevator to rotate anticlockwise. Three screw rods of the spiral feeding elevator rotate anticlockwise in nuts on the apex angles of the equilateral triangle lifting plates of the spiral feeding elevator respectively, so that the equilateral triangle lifting plates of the spiral feeding elevator move downwards from the highest positions. After an equilateral triangle lifting plate of the spiral feeding elevator is lowered to a first set position, the steel slag powder or the glass powder is heated and melted by air plasma flame of a steel slag powder or glass powder thermal spraying device and then sprayed onto the hollow core rod, and a core rod motor arranged on the equilateral triangle lifting plate of the spiral feeding elevator rotates to drive the hollow core rod to rotate, so that molten steel slag or molten glass is uniformly sprayed onto the hollow core rod. The computer controller enables the motor of the spiral feeding elevator to rotate clockwise continuously to drive the three screws of the spiral feeding elevator to rotate anticlockwise, the screw counter of the spiral feeding elevator gives data, the equilateral triangle lifting plate of the spiral feeding elevator is lowered to a second set position, the computer controller enables a ceramic valve arranged on a refractory ceramic tube between the ceramic spiral die-casting machine and the annular molten steel water outlet to be opened, molten steel is extruded from the annular molten steel water outlet to be die-cast onto a hollow core rod with a steel slag film or a glass film, and the three electromagnets are powered on by the computer controller to enable the three arc plates to rotate downwards by 60 degrees. Each group of the stick binding devices can adjust the position of a binding stick through a spiral feeding device of the stick binding devices according to data given by the stick binding counters, a stick binding motor rotates to drive the binding stick to rotate, and the binding stick of each group of the stick binding devices can evenly bind the die-cast seamless steel pipe blanks. After the equilateral triangle lifting plate of the spiral feeding elevator is lowered to the third set position according to the data given by the screw rod counter of the spiral feeding elevator, the air plasma flame of the steel slag powder or glass powder thermal spraying device is extinguished by the computer controller, and the steel slag powder or glass powder thermal spraying device does not heat and melt the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core rod. And the computer controller closes a ceramic valve arranged on a refractory ceramic tube between the ceramic spiral die-casting machine and the annular molten steel water outlet, and then presses the annular sealer into the annular molten steel water outlet through the spiral feeding device of the annular sealer. The gas sprayed from the nozzle of the annular burner is ignited, and the flue gas generated by the annular burner enters the gap between the refractory ceramic pipe and the heat-insulating pipe, so that the molten iron solidification of the annular molten iron inlet and the heat-insulating management is prevented. After the equilateral triangle lifting plate of the spiral feeding elevator is lowered to the lowest position, the computer controller stops the motor of the spiral feeding elevator. Three hands of the rod releasing device extend out and press the upper end of the seamless steel tube under the driving of a spiral feeding device of the rod releasing device. Water squeezed out from the water pump enters the hollow core rod through the electromagnetic water valve which is opened by electrifying, the hollow core rod is cooled and contracted, a gap is generated between the hollow core rod and the seamless steel pipe, and the steel slag melt film or the glass melt film between the hollow core rod and the seamless steel pipe plays a role in lubricating. The computer controller makes the motor of the elevating screw feeder rotate anticlockwise to drive the three screws of the elevating screw feeder to rotate clockwise, the three screw ends of the elevating screw feeder rotate clockwise in the nuts on the apex angle of the equilateral triangle elevating plate of the elevating screw feeder, so that the equilateral triangle elevating plate of the elevating screw feeder moves upwards to extract the hollow core rod from the seamless steel pipe, and the seamless steel pipe flowing from the hollow core rod into the seamless steel pipe is cooled by the water and quenched. After the screw counter of the screw feeding elevator gives data that the equilateral triangular lifting plate of the screw feeding elevator has risen to the highest position, the computer controller stops the rotation of a motor of the spiral feeding lifter, three hands of the rod detaching device retract under the driving of a spiral feeding device of the rod detaching device, the computer controller extracts the annular sealing device from an annular molten steel water outlet through the spiral feeding device of the annular sealing device, each group of rod binding devices can adjust the position of a binding rod through the spiral feeding device of the rod binding device according to data given by the rod binding counter and stop the rotation of a rod binding motor to enable the binding rod not to bind the seamless steel pipe, and the computer controller enables three electromagnets to be powered off to enable the three arc-shaped plates to return to the horizontal position under the action of a torsion spring to prepare for manufacturing the next seamless steel pipe. The seamless steel pipe falls into the lower sections of the three support rods of the spiral feeding elevator under the action of gravity and is taken onto a metal belt of the metal belt conveyor by a robot.
The semi-solid molten steel is cast and then passes through a special seamless steel tube which is rolled, crystal nuclei are more and crystal branches are less in crystallization, and the special seamless steel tube looks like a sesame cake under a microscope. The special seamless steel pipe which is die-cast by using the semi-solid molten steel and then rolled does not crack like a common seamless steel pipe which is die-cast by using common molten steel and then rolled under the working condition that the special seamless steel pipe expands and contracts after being cooled at high temperature; and the mechanical strength of the special seamless steel pipe is twice as high as that of the common seamless steel pipe, and the special seamless steel pipe can adapt to high-temperature and high-pressure workplaces.
Description of the drawings:
the present invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic structural view of a high-temperature high-pressure seamless steel pipe production apparatus according to the present invention.
The specific implementation mode is as follows:
FIG. 1 shows a production facility for a high-temperature high-pressure seamless steel pipe. The upper ends of three support rods 4 of the spiral feeding elevator are fixed on the top angle of an equilateral triangle top plate 1 of the spiral feeding elevator, the middle parts of the three support rods 4 of the spiral feeding elevator are fixed on the top angle of an equilateral triangle bottom plate 2 of the spiral feeding elevator, the lower ends of the three support rods 4 of the spiral feeding elevator are fixed on a cement base 3, and a plurality of equilateral triangle connecting rods are arranged among the three support rods 4 of the spiral feeding elevator. The upper ends of three screw rods 6 of the spiral feeding lifter respectively penetrate through bearings on the top angles of an equilateral triangle top plate 1 close to the spiral feeding lifter, then the upper ends of the three screw rods 6 of the spiral feeding lifter are respectively provided with a screw rod driven gear, and the lower ends of the three screw rods 6 of the spiral feeding lifter respectively penetrate through bearings on the top angles of an equilateral triangle bottom plate 2 close to the spiral feeding lifter. A spiral feeding elevator motor 5 is arranged on an equilateral triangle top plate 1 of the spiral feeding elevator, an output gear of the spiral feeding elevator motor 5 is meshed with three screw driven gears, and one screw driven gear of the spiral feeding elevator is meshed with a screw counter gear. Three screw rods 6 of the spiral feeding elevator respectively penetrate through nuts on the top angles of an equilateral triangle lifting plate 7 of the spiral feeding elevator, the upper section of a hollow core rod 0 is fixed at the central position of the equilateral triangle lifting plate 7 of the spiral feeding elevator through a pressure bearing, the lower section of the hollow core rod 0 penetrates through a central hole of an equilateral triangle bottom plate of the spiral feeding elevator, and a core rod gear is arranged at the upper end of the hollow core rod 0. An equilateral triangle lifting plate 7 of the spiral feeding lifter is provided with a core rod motor 8, and an output gear of the core rod motor 8 is meshed with a core rod gear. The annular molten steel water outlet 10 is fixed on an equilateral triangle connecting rod of a spiral feeding lifter below a spiral feeding device of the annular sealer, the annular molten steel water outlet 10 is sleeved on the hollow core rod 0, the annular sealer seals the upper surface of the annular molten steel water outlet 10, and the annular sealer is pressed into the annular molten steel water outlet 10 or pulled out of the annular molten steel water outlet 10 through the spiral feeding device of the annular sealer. A ceramic valve 18 is arranged on a refractory ceramic tube between the ceramic spiral die casting machine 17 and the annular molten steel water outlet, and a heat-insulating tube is sleeved outside the refractory ceramic tube between the annular molten steel water outlet 10 and the ceramic valve 18. Three arc-shaped plates are arranged below the annular molten steel water outlet 10 to seal the lower surface of the annular molten steel water outlet 10, the three electromagnets are electrified to enable the three arc-shaped plates to rotate downwards by 60 degrees, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding lifter. The three-piece arc-shaped plate is provided with a rod releasing device 11 below, three hands of the rod releasing device 11 are driven by a spiral feeding device of the rod releasing device to extend out and press the upper end of the seamless steel pipe, and the three hands of the rod releasing device 11 are fixed on an equilateral triangle connecting rod of the spiral feeding lifter by the spiral feeding device of the rod releasing device. A plurality of stick binding devices 12 are arranged below the stick releasing device 11, each stick binding device 12 consists of three sticks with a distance of 120 radians, the sticks of each stick binding device 12 are fixed on an equilateral triangle connecting rod of the spiral feeding lifter through stick binding spiral feeding devices, a gear of each stick binding spiral feeding device is meshed with a stick binding counter gear, and an output gear of a stick binding motor is meshed with the stick binding gear. A robot and a metal belt conveyor are arranged beside the lower part of the support rods behind the last group of stick binding devices 12. A water pool 19 is arranged beside the cement base 3, and a water pump 20 is arranged above the water pool 19. Soft water from the water pump 20 is connected to the upper end of the hollow core stick 0 through the electromagnetic water valve 22, and a movable mechanical sealing ring is arranged between the upper end of the hollow core stick 0 and the outlet of the soft water pipe. The steel slag powder or glass powder thermal spraying device 9 is fixed on an equilateral triangle connecting rod between the equilateral triangle base plate 7 of the spiral feeding elevator and the annular sealing device, and the air plasma flame of the steel slag powder or glass powder thermal spraying device 9 heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder on the hollow core rod 0. The ceramic screw die casting machine 17 presses the semi-solid molten steel into the annular molten steel outlet 10 through the opened ceramic valve 18. An annular burner is sleeved outside the annular molten steel water outlet 10, and flue gas generated by the annular burner enters a gap between the refractory ceramic pipe and the heat preservation pipe.
FIG. 1 shows a control method of a high-temperature high-pressure seamless steel pipe production facility. The semi-solid die casting equipment consists of a chute 13, a cooling flat tube 14, a stirrer 16, a ceramic spiral die casting machine 17, a temperature sensor, a vibration meter and a computer controller. The cooling flat pipe 14 is arranged below the inclined groove 13, a hard water pipe connected from a water pump 20 is connected to a water spray nozzle at the inlet of the cooling flat pipe 14 through an electric adjusting water valve 21, a probe of a temperature sensor is buried in molten steel at the front section of the inclined groove 13, the auxiliary material feeding machine 15 is arranged above the front section of the inclined groove 13, a blade of the stirring machine 16 is buried in the molten steel at the rear section of the inclined groove 13, a probe of a vibration meter is buried in the molten steel at the rear section of the inclined groove 13, and the ceramic screw die casting machine 17 is arranged at the tail end of the inclined groove. The water pump 20 pumps water from the water tank 19, the water pressed out by the water pump 20 is sprayed from the inlet of the cooling flat pipe 14 through the electric water regulating valve 21, and the computer control instrument regulates the electric water regulating valve 21 according to the data of the temperature sensor and the vibrometer. The auxiliary material throwing machine 15 throws the rare earth and other materials into the molten steel at the front section of the chute 13 at a set speed and in a set proportion, the motor of the stirrer 16 rotates, the blades of the stirrer 16 stir the molten steel in the chute 13, so that the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out of crystal nuclei during the crystallization of the molten steel are cut off, the cut crystal branches form new crystal nuclei, and the ceramic spiral die casting machine 17 extrudes the semi-solid molten steel with the crystallinity of 60-80%. The computer control instrument makes the motor 5 of the screw feeding lifter rotate clockwise to drive the three screws 6 of the screw feeding lifter to rotate anticlockwise. The three screws 6 of the screw feeding elevator rotate counterclockwise in the nuts on the apex angles of the equilateral triangle lifting plate 7 of the screw feeding elevator, respectively, so that the equilateral triangle lifting plate 7 of the screw feeding elevator moves downward from the highest position. After the equilateral triangle lifting plate 7 of the spiral feeding elevator is lowered to a first set position, the air plasma flame of the steel slag powder or glass powder thermal spraying device 9 heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core rod 0, and a core rod motor 8 arranged on the equilateral triangle lifting plate 7 of the spiral feeding elevator rotates to drive the hollow core rod 0 to rotate, so that the molten steel slag or the molten glass is uniformly sprayed onto the hollow core rod 0. The computer controller enables the motor 5 of the spiral feeding elevator to rotate clockwise continuously to drive the three screws 6 of the spiral feeding elevator to rotate anticlockwise, the screw counter of the spiral feeding elevator gives data, after the equilateral triangle lifting plate 7 of the spiral feeding elevator descends to a second set position, the computer controller enables a ceramic valve 18 arranged on a refractory ceramic tube between a ceramic spiral die-casting machine 17 and an annular molten steel water outlet 10 to be opened, molten steel is extruded from the annular molten iron water outlet 10 to be die-cast onto a hollow core rod 0 with a steel slag film or a glass film in transit, and the computer controller enables the three electromagnets to be electrified to enable the three arc plates to rotate downwards by 60 degrees. Each group of the rod binding devices can adjust the position of a binding rod through the spiral feeding device of the rod binding device 12 according to data given by the rod binding counter, the rod binding motor rotates to drive the binding rod to rotate, and the binding rod of each group of the rod binding devices 12 can evenly bind the die-cast seamless steel pipe blank. After the equilateral triangle lifting plate 7 of the spiral feeding elevator is lowered to the third set position according to the data given by the screw counter of the spiral feeding elevator, the computer controller enables the air plasma flame of the steel slag powder or glass powder thermal sprayer 9 to extinguish, and the steel slag powder or glass powder thermal sprayer does not spray the steel slag powder or glass powder onto the hollow core rod 0 after heating and melting the steel slag powder or glass powder any more. The computer control instrument closes a ceramic valve 18 arranged on a refractory ceramic tube between a ceramic spiral die-casting machine 17 and the annular molten steel water outlet 10, and then the computer control instrument presses the annular sealer into the annular molten steel water outlet 10 through a spiral feeding device of the annular sealer. The gas sprayed from the nozzle of the annular burner is ignited, and the flue gas generated by the annular burner enters the gap between the refractory ceramic pipe and the heat preservation pipe, so that the annular molten iron inlet 10 and the molten iron subjected to heat preservation management are prevented from being solidified. The screw counter of the screw feeder elevator gives data that the equilateral triangular elevator plate 7 of the screw feeder elevator has been lowered to the lowest position, and the computer control unit stops the rotation of the motor 5 of the screw feeder elevator. Three hands of the rod releasing device 11 are driven by a spiral feeding device of the rod releasing device 11 to extend out and press the upper end of the seamless steel pipe. Water pressed out from the water pump 20 enters the hollow core rod 0 through the electromagnetic water valve 22 which is opened by electrifying, the hollow core rod 0 is cooled and contracted, a gap is generated between the hollow core rod 0 and the seamless steel pipe, and the steel slag melt film or the glass melt film between the hollow core rod 0 and the seamless steel pipe plays a role in lubrication. The computer control instrument enables a motor 5 of the elevating screw feeding elevator to rotate anticlockwise to drive three screw rods 6 of the elevating screw feeding elevator to rotate clockwise, the ends of the three screw rods of the elevating screw feeding elevator rotate clockwise in nuts on the top angles of an equilateral triangle lifting plate 7 of the elevating screw feeding elevator respectively, the equilateral triangle lifting plate 7 of the elevating screw feeding elevator moves upwards, the hollow core rod 0 is pulled out from the seamless steel pipe, the hollow core rod 0 flows into the water-cooled seamless steel pipe in the seamless steel pipe, and the seamless steel pipe is quenched. Data is given by a screw counter of the spiral feeding elevator, after an equilateral triangle lifting plate 7 of the spiral feeding elevator rises to the highest position, the hollow core rod is completely pulled out of the seamless steel pipe, a computer controller enables an electromagnetic water valve 22 to be turned off in a power-off mode, water pressed out of a water pump 20 does not enter the hollow core rod 0 any more, the computer controller enables a motor 5 of the spiral feeding elevator to stop rotating, three hands of a rod stripper 11 are driven by a spiral feeding device of the rod stripper to retract, the computer controller enables an annular sealer to be pulled out of an annular molten steel water outlet 10 through the spiral feeding device of the annular sealer, each set of rod binding devices 12 can adjust the position of the bound rod through the spiral feeding device of the rod binding devices 12 according to the data given by the rod binding counters and enable the bound rod to stop rotating, the computer controller enables three arc-shaped plates to return to the horizontal position under the action of a torsion spring, and the three arc-shaped plates are made to be accurate to the horizontal position under the action of the torsion spring, and the seamless steel And (4) preparing. The seamless steel pipe falls into the lower sections of the three support rods 4 of the spiral feeding elevator under the action of gravity and is taken onto the metal belt of the metal belt conveyor by the robot.
Claims (2)
1. The upper ends of three support rods of a spiral feeding elevator are fixed on the top angle of an equilateral triangle top plate of the spiral feeding elevator, the middle parts of the three support rods of the spiral feeding elevator are fixed on the top angle of an equilateral triangle bottom plate of the spiral feeding elevator, the lower ends of the three support rods of the spiral feeding elevator are fixed on a cement base, and a plurality of equilateral triangle connecting rods are arranged among the three support rods of the spiral feeding elevator; the upper ends of three screw rods of the spiral feeding lifter respectively penetrate through bearings on the vertex angles of an equilateral triangle top plate close to the spiral feeding lifter, then the upper ends of the three screw rods of the spiral feeding lifter are respectively provided with a screw rod driven gear, the lower ends of the three screw rods of the spiral feeding lifter respectively penetrate through bearings on the vertex angles of an equilateral triangle bottom plate close to the spiral feeding lifter, an equilateral triangle top plate of the spiral feeding lifter is provided with a spiral feeding lifter motor, an output gear of the spiral feeding lifter motor is meshed with the three screw rod driven gears, and one screw rod driven gear of the spiral feeding lifter is meshed with a screw rod counter gear; three screw rods of the spiral feeding elevator respectively penetrate through nuts on the top angles of an equilateral triangle lifting plate of the spiral feeding elevator, the upper section of a hollow core rod is fixed at the central position of the equilateral triangle lifting plate of the spiral feeding elevator through a pressure bearing, the lower section of the hollow core rod penetrates through a central hole of an equilateral triangle bottom plate of the spiral feeding elevator, a core rod gear is arranged at the upper end of the hollow core rod, a core rod motor is arranged on the equilateral triangle lifting plate of the spiral feeding elevator, an output gear of the core rod motor is meshed with the core rod gear, an annular molten steel water outlet is fixed on an equilateral triangle connecting rod of the spiral feeding elevator below a spiral feeding device of an annular sealer, the annular molten steel water outlet is sleeved on the hollow core rod, and the annular sealer seals the upper part of the annular molten steel water outlet, pressing the annular sealer into the annular molten steel water outlet or pulling the annular sealer out of the annular molten steel water outlet through a spiral feeding device of the annular sealer; a ceramic valve is arranged on the refractory ceramic pipe between the ceramic spiral die-casting machine and the annular molten steel water outlet, and a heat-insulating pipe is sleeved outside the refractory ceramic pipe between the annular molten steel water outlet and the ceramic valve; three arc-shaped plates are arranged below the annular molten steel water outlet to seal the lower surface of the annular molten steel water outlet, the three electromagnets are electrified to enable the three arc-shaped plates to rotate downwards by 60 degrees, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding lifter; a rod releasing device is arranged below the three arc plates, three hands of the rod releasing device are driven by a spiral feeding device of the rod releasing device to extend out and press the upper end of the seamless steel pipe, and the three hands of the rod releasing device are fixed on an equilateral triangle connecting rod of the spiral feeding lifter by the spiral feeding device of the rod releasing device; a plurality of groups of stick binding devices are arranged below the stick removing device, each group of stick binding devices consists of three sticks with a distance of 120 radians, the sticks of each group of stick binding devices are fixed on an equilateral triangle connecting rod of the spiral feeding lifter through a stick binding spiral feeding device, a gear of each stick binding spiral feeding device is meshed with a stick binding counter gear, and an output gear of a stick binding motor is meshed with the stick binding gear; a robot and a metal belt conveyor are arranged beside the lower part of the support rod behind the last group of stick binding devices; the method is characterized in that: a water tank (19) is arranged beside the cement base (3), a water pump (20) is arranged above the water tank (19), soft water connected from the water pump (20) is connected to the upper end of the hollow core rod (0) through an electromagnetic water valve (22), a movable mechanical sealing ring is arranged between the upper end of the hollow core rod (0) and the outlet of the soft water pipe, a steel slag powder or glass powder thermal spraying device (9) is fixed on an equilateral triangle connecting rod between an equilateral triangle bottom plate (7) of the spiral feeding lifter and an annular sealing device, air plasma flame of the steel slag powder or glass powder thermal spraying device (9) heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder on the hollow core rod (0), the ceramic spiral die casting machine (17) presses semi-solid molten steel into the annular molten steel water outlet (10) through the opened ceramic valve (18), and an annular burner is sleeved outside the annular molten steel water outlet (10), flue gas generated by the annular combustor enters a gap between the refractory ceramic pipe and the heat preservation pipe.
2. A control method of high-temperature high-pressure seamless steel tube production equipment is characterized in that semi-solid state die-casting equipment comprises a chute, a cooling flat tube, a stirrer, a ceramic spiral die-casting machine, a temperature sensor, a vibrometer and a computer controller, wherein the cooling flat tube is arranged below the chute, a hard water tube connected from a water pump is connected to a water spray nozzle at the inlet of the cooling flat tube through an electric adjusting water valve, a probe of the temperature sensor is buried in molten steel at the front section of the chute, an auxiliary material feeding machine is arranged above the front section of the chute, blades of the stirrer are buried in the molten steel at the chute, a probe of the vibrometer is buried in the molten steel at the rear section of the chute, and the ceramic; the method is characterized in that: the water pump (20) pumps water from the water pool (19), the water pressed out by the water pump (20) is sprayed from the inlet of the cooling flat pipe (14) through the electric water regulating valve (21), and the computer control instrument regulates the electric water regulating valve (21) according to the data of the temperature sensor and the vibrometer; the auxiliary material throwing machine (15) throws rare earth and other materials into the molten steel at the front section of the chute (13) at a set speed and in a set proportion, a motor of the stirrer (16) rotates, blades of the stirrer (16) stir the molten steel in the chute (13) to uniformly mix the rare earth and other materials melted in the molten steel with the molten steel, crystal branches extending out of crystal nuclei during the crystallization of the molten steel are cut off to form new crystal nuclei, and a ceramic spiral die casting machine (17) extrudes the semi-solid molten steel with the crystallinity of 60-80%; the computer control instrument enables a motor (5) of the elevating screw feeding elevator to rotate clockwise to drive three screw rods (6) of the elevating screw feeding elevator to rotate anticlockwise, the three screw rods (6) of the elevating screw feeding elevator rotate anticlockwise in nuts on the vertex angles of an equilateral triangle lifting plate (7) of the elevating screw feeding elevator respectively, the equilateral triangle lifting plate (7) of the elevating screw feeding elevator moves downwards from the highest position, a screw rod counter of the elevating screw feeding elevator gives data, after the equilateral triangle lifting plate (7) of the elevating screw feeding elevator is lowered to a first set position, air plasma flame of a steel slag powder or glass powder thermal spraying device (9) heats and melts steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder on a hollow core rod (0), a core rod motor (8) arranged on the equilateral triangle lifting plate (7) of the elevating screw feeding elevator rotates to drive the hollow core rod (0) to rotate, uniformly spraying the steel slag melt or the glass melt on the hollow core rod (0); the computer controller enables a motor (5) of the spiral feeding elevator to rotate clockwise continuously to drive three screws (6) of the spiral feeding elevator to rotate anticlockwise, a screw counter of the spiral feeding elevator gives data, an equilateral triangle lifting plate (7) of the spiral feeding elevator is lowered to a second set position, the computer controller opens a ceramic valve (18) arranged on a refractory ceramic pipe between a ceramic spiral die-casting machine (17) and an annular molten steel water outlet (10), molten steel is extruded from the annular molten iron water outlet (10) to be die-cast onto a hollow core rod (0) with a steel slag film or a glass film, and the computer controller enables three electromagnets to be electrified to enable the three arc plates to rotate downwards by 60 degrees; each group of the stick binding devices can adjust the position of a stick through a spiral feeding device of the stick binding device (12) according to data given by the stick binding counter, a stick binding motor rotates to drive the stick to rotate, and the sticks of each group of the stick binding devices (12) can uniformly bind the die-cast seamless steel pipe blank; after an equilateral triangle lifting plate (7) of the spiral feeding elevator is lowered to a third set position according to data given by a screw rod counter of the spiral feeding elevator, the computer controller enables air plasma flame of the steel slag powder or glass powder thermal spraying device (9) to extinguish, and the steel slag powder or glass powder thermal spraying device does not heat and melt the steel slag powder or glass powder any more and then sprays the molten steel slag powder or glass powder onto the hollow core rod (0); the computer control instrument closes a ceramic valve (18) arranged on a refractory ceramic pipe between a ceramic spiral die casting machine (17) and the annular molten steel water outlet (10), then the computer control instrument presses the annular sealer into the annular molten steel water outlet (10) through a spiral feeding device of the annular sealer, gas sprayed out from a nozzle of the annular burner is ignited, and flue gas generated by the annular burner enters a gap between the refractory ceramic pipe and a heat preservation pipe to prevent the annular molten iron water inlet (10) and molten iron managed by heat preservation from being solidified; after the screw counter of the spiral feeding elevator gives data that the equilateral triangle lifting plate (7) of the spiral feeding elevator has fallen to the lowest position, the computer control instrument makes the motor (5) of the spiral feeding elevator stop rotating; three hands of the rod removing device (11) extend out and press the upper end of the seamless steel pipe under the driving of a spiral feeding device of the rod removing device (11), water pressed out of a water pump (20) enters the hollow core rod (0) through an electromagnetic water valve (22) which is opened by electrifying, the hollow core rod (0) is cooled and contracted, a gap is generated between the hollow core rod (0) and the seamless steel pipe, and a steel slag melt film or a glass melt film between the hollow core rod (0) and the seamless steel pipe plays a role in lubrication; the computer control instrument enables a motor (5) of the elevating screw feeding elevator to rotate anticlockwise to drive three screw rods (6) of the elevating screw feeding elevator to rotate clockwise, the ends of the three screw rods of the elevating screw feeding elevator rotate clockwise in nuts on the vertex angle of an equilateral triangle lifting plate (7) of the elevating screw feeding elevator respectively, so that the equilateral triangle lifting plate (7) of the elevating screw feeding elevator moves upwards, and the hollow core rod (0) is pulled out of the seamless steel pipe; the water flowing into the seamless steel pipe from the hollow core rod (0) cools the seamless steel pipe and quenches the seamless steel pipe; after an equilateral triangle lifting plate (7) of the spiral feeding lifter rises to the highest position, the hollow core rod is completely pulled out of the seamless steel pipe, the electromagnetic water valve (22) is powered off and closed by the computer controller, water pressed out from the water pump (20) does not enter the hollow core rod (0), the motor (5) of the spiral feeding lifter stops rotating by the computer controller, three hands of the rod stripper (11) retract under the driving of the spiral feeding device of the rod stripper, the annular sealer is pulled out of the annular molten steel water outlet (10) by the computer controller through the spiral feeding device of the annular sealer, each group of rod binding devices (12) can adjust the position of the rod binding through the spiral feeding device of the rod binding devices (12) according to data given by the rod binding counters and stop rotating the rod binding motors to ensure that the rod is not bound with the seamless steel pipe, the computer controller enables the three electromagnets to lose power so that the three arc-shaped plates return to the horizontal position under the action of the torsion spring to prepare for manufacturing the next seamless steel pipe; the seamless steel pipe falls into the lower sections of the three support rods (4) of the spiral feeding elevator under the action of gravity and is taken onto a metal belt of the metal belt conveyor by a robot.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113695549A (en) * | 2021-08-24 | 2021-11-26 | 张英华 | Method for manufacturing pressure casting product with alloy lining or inner container |
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