CN112873059A - Method and equipment for treating oxide layer on surface of hot rolled plate - Google Patents
Method and equipment for treating oxide layer on surface of hot rolled plate Download PDFInfo
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- CN112873059A CN112873059A CN202110201796.7A CN202110201796A CN112873059A CN 112873059 A CN112873059 A CN 112873059A CN 202110201796 A CN202110201796 A CN 202110201796A CN 112873059 A CN112873059 A CN 112873059A
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- sand blasting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
- B24C3/085—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces the travelling workpieces being moved into different working positions during travelling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
- B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
- B24C3/14—Apparatus using impellers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/06—Impeller wheels; Rotor blades therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
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Abstract
The invention relates to a method and equipment for treating an oxide layer on the surface of a hot rolling plate, belonging to the technical field of treatment of the oxide layer on the surface of the hot rolling plate. The technical scheme is as follows: the sandblast unit can carry out horizontal angle modulation and vertical angle modulation, horizontal angle modulation is adjusted for the width direction along the hot rolling board and is adjusted the horizontal spray angle alpha of sandblast unit, and vertical angle modulation is adjusted for the length direction along the hot rolling board and is adjusted the vertical spray angle beta of sandblast unit, and the distance between sandblast unit and the hot rolling board is adjustable. The invention has the following positive effects: when the rust removing device is used for carrying out rust removing treatment on the surface of the hot rolled plate, the transverse and longitudinal spraying angles of the sand blasting unit can be respectively adjusted, and the distance between the sand blasting unit and the hot rolled plate is changed, so that the effects of high efficiency, treatment requirements of different metal materials and uniform surface treatment quality standards can be obtained by matching with hot rolled plate plates with different thicknesses.
Description
Technical Field
The invention relates to a method and equipment for treating an oxide layer on the surface of a hot rolling plate, belonging to the technical field of treatment of the oxide layer on the surface of the hot rolling plate.
Background
One way of surface treatment of rolled sheets is the conventional sand blasting or pickling treatment. The common sand blasting treatment is to form a high-speed spray beam by using compressed air as power to spray materials (ceramic sand, glass beads, nylon sand, quartz sand, carborundum and iron sand) to the surface of a workpiece treated by a hot rolled plate at a high speed, so that the appearance or the shape of the outer surface of the hot rolled plate is changed, and the surface of the workpiece obtains certain cleanliness and different roughness due to the impact and the cutting action of an abrasive on the surface of the workpiece, so that the mechanical property of the surface of the workpiece is improved.
The process of using compressed air as power source has limited material spraying speed.
Acid pickling process
The pickling process is widely applied to surface treatment before cold-rolled sheet blank (namely hot-rolled sheet), phosphorization or plating of hot-rolled section steel and surface pretreatment before processing of plating on the surface of a pipe; surface treatment before cold drawing processing of pipes, profiles, wires and the like; the steel workpiece is subjected to the rust removal treatment before the electroplating and the brush plating and the similar treatment in the production process of stainless steel and special steel. The pickling process is an indispensable technological process for steel production and steel product processing. In production practice, the pickling process also entails some problems as follows:
(1) large consumption of iron and steel materials and acid
In the pickling process, the iron scale is removed mainly by dissolving the metal oxide through the chemical reaction of the acid and the iron oxide. When pickling materials with sulfuric acid, scale is also removed by stripping with hydrogen bubbles generated by the chemical reaction of the acid with iron. Acid is consumed in large quantities during the pickling process. At the same time, a considerable amount of corrosion loss of metallic iron is caused.
(2) May reduce the physical properties of the steel
During the pickling process, a chemical reaction occurs between the metallic iron and the acid and hydrogen gas is generated. Since the chemical potential of hydrogen in the pickling solution is higher than that of hydrogen in the steel to be pickled, the generated hydrogen permeates into the steel and accumulates to cause hydrogen embrittlement, thereby affecting the mechanical properties of the steel or the subsequent processing.
(3) Can bring about a series of environmental pollution problems
The surface treatment of steel or parts by pickling process is different in the variety of steel, the specification of products and the scale of production, so that the production equipment and the production environment are greatly different. Such as the sealing of pickling tanks, the corrosion of production equipment and plants, the ventilation and exhaust of pickling plants, the discharge and treatment of acid mist, and the treatment and discharge of sewage, the treatment methods and the treatment levels are very different. Thus, many problems in environmental protection are caused, and the problems need to be treated and solved one by one.
(4) Treatment of spent acid and iron salts
The acid washing of steel consumes a large amount of metallic iron and simultaneously produces a large amount of spent acid solution and corresponding acid and ferric oxide or generated ferric salt solution. In order to recover and utilize these spent acid solutions and iron salts, a large investment is required to build corresponding recovery and treatment facilities. When some small-sized and small-batch steel pieces are subjected to pickling treatment, the pickling waste liquid is difficult to intensively treat, and once the pickling waste liquid is directly discharged, the environment is seriously polluted.
Second, shot blasting and sand blasting process
The shot blasting process is a cold treatment process. According to the process, a batch of small round steel shots are continuously beaten on the surface of the steel product, each steel shot impacts a hot rolled plate to beat small indentations or depressions, and therefore the surface hardening effect can be achieved. The metal surface layer of the hot rolled plate is stretched in the process, which is beneficial to eliminating the residual stress of the cast and pressed parts.
The principle of the shot blasting and sand blasting process is similar, the equipment configuration and the process flow are different, the recovery, dust collection and material spraying strength need to be considered in the general impeller sand blasting, the unqualified steel balls subjected to screening, separation, deformation and crushing need to be considered in the shot blasting process for flow control, the sizes of the steel balls need to be strictly graded, and the function difference is more obvious. The main function of sand blasting is cleaning, surface roughness is improved, and subsequent processing procedures such as electroplating and paint baking are facilitated. The shot blasting improves the fatigue resistance, stress corrosion resistance and the hardness of the surface of the workpiece, and achieves the effect of prolonging the service life.
In contrast to grit blasting, the equipment used for blasting is also susceptible to damage during operation, including equipment for accelerating the blasting particles and the walls of the surface treatment area of the hot rolled sheet.
In the existing shot blasting or sand blasting process for processing hot rolled metal plates, the longitudinal and transverse spraying angles are usually difficult to adjust or depend on manual processing of operators, so that the surface processing quality of the same batch of hot rolled plates cannot reach the consistent standard.
In the existing shot blasting or sand blasting process for processing hot rolled metal plates, the longitudinal and transverse angles and distances are usually difficult to adjust or depend on manual processing of operators, so that the surface processing quality of the same batch of hot rolled plates cannot reach the consistent standard.
Disclosure of Invention
The invention aims to provide a method and equipment for treating an oxide layer on the surface of a hot rolled plate, and provides a sand blasting chamber, wherein an upper sand blasting device and a lower sand blasting device are arranged in the sand blasting chamber from top to bottom, the upper sand blasting device and the lower sand blasting device are respectively composed of a plurality of sand blasting units, and the sand blasting units can adjust the longitudinal sand blasting angles, the transverse sand blasting angles and the distances between the sand blasting units and the hot rolled plate, so that the hot rolled plate with different thicknesses can be better treated for the oxide layer on the surface, and the problems in the background art can be solved.
The technical scheme of the invention is as follows:
a method for treating an oxide layer on the surface of a hot rolled plate is characterized in that sand blasting equipment with adjustable angle and distance is arranged in a sand blasting chamber, the sand blasting equipment is divided into upper sand blasting equipment and lower sand blasting equipment which are symmetrically arranged, each of the upper sand blasting equipment and the lower sand blasting equipment consists of a plurality of sand blasting units, each sand blasting unit can be used for carrying out transverse angle adjustment and longitudinal angle adjustment, the transverse angle adjustment is used for adjusting the transverse spraying angle alpha of each sand blasting unit along the width direction of the hot rolled plate, the longitudinal angle adjustment is used for adjusting the longitudinal spraying angle beta of each sand blasting unit along the length direction of the hot rolled plate, and the distance between each sand blasting unit and the hot rolled plate is adjustable; the hot rolled plate enters the sand blasting chamber from the inlet of the sand blasting chamber, passes through the upper sand blasting device and the lower sand blasting device, starts the upper sand blasting device and the lower sand blasting device, simultaneously performs sand blasting on the upper surface and the lower surface of the hot rolled plate, and performs all-dimensional rust removal on the hot rolled plate by adjusting the transverse spraying angle alpha, the longitudinal spraying angle beta and/or the distance between the sand blasting unit and the hot rolled plate.
The sand blasting units in the upper sand blasting equipment and the lower sand blasting equipment are the same in number and are arranged in a rectangular array, at least three rows of sand blasting units are arranged in the width direction, and at least three rows of sand blasting units are arranged in the length direction.
Set gradually three rows of sand blasting units from a left side to the right side on width direction, in the sand blasting room was entered into from the sand blasting room entry to the hot rolling board, be located left sand blasting unit and sand blast the hot rolling board towards the right side, the sand blasting unit that is located the centre sand blasting unit sand blast the hot rolling board perpendicularly, the sand blasting unit that is located the right side sand blast the hot rolling board towards the left side.
Set gradually four lines of sandblast units after to in the past on length direction, in the sandblast room was entered into from the sandblast room entry to the hot rolling board, first line sandblast unit and the second line sandblast unit all sandblast to the hot rolling board towards the place ahead, the third line sandblast unit sandblasts to the hot rolling board perpendicularly, and the fourth line sandblast unit sandblasts to the hot rolling board towards the back.
The transverse jetting angles alpha of three rows of sand blasting units arranged in the width direction are sequentially decreased progressively.
The longitudinal spraying angles beta of four rows of sand blasting units arranged in the length direction are sequentially increased.
An apparatus for treating an oxide layer on the surface of a hot rolled plate, comprising an upper sand blasting apparatus and a lower sand blasting apparatus which are arranged up and down in a sand blasting chamber and are arranged symmetrically with each other, and a hot rolled plate is arranged between the upper sand blasting apparatus and the lower sand blasting apparatus, characterized in that: upper portion sand blasting equipment and lower part sand blasting equipment constitute by a plurality of sand blasting units, and the sand blasting unit can carry out horizontal angle modulation and vertical angle modulation through angle adjusting device, horizontal angle modulation is adjusted the horizontal jet angle alpha of sand blasting unit for the width direction along hot rolling board, and vertical angle modulation is adjusted the longitudinal jet angle beta of sand blasting unit for the length direction along hot rolling board, and the distance accessible between sand blasting unit and the hot rolling board is adjusted apart from adjusting device.
The angle adjustment means and the distance adjustment means are common adjustment means known in the art, such as: the angle adjusting device can drive the rotating shaft to rotate the sand blasting unit by the motor, and can also be of the following structure: a bottom plate and a base which are arranged up and down are arranged below the shell of the impeller sand blasting equipment, and a left adjusting inclined block and a right adjusting inclined block which are symmetrically arranged left and right are arranged between the shell of the impeller sand blasting equipment and the bottom plate; two front adjusting inclined blocks and two rear adjusting inclined blocks which are symmetrically arranged in front and back are arranged between the bottom plate and the base, and a first jet orifice and a second jet orifice which are matched with the sand blasting outlet are respectively arranged on the bottom plate and the base; the sloping block is adjusted to a left side, preceding sloping block, right side are adjusted to the sloping block and are the wedge with the back to adjust the sloping block, and the left side is adjusted the sloping block from a left side to the right side towards sandblast export slope, and the right side is adjusted the sloping block from a right side to a left side towards sandblast export slope, and preceding sloping block is adjusted to the preceding slope towards sandblast export slope after to in the past, and the back is adjusted the sloping block from the back to preceding towards sandblast export slope, and the cross-section of left side adjustment sloping block, preceding adjustment sloping block, right side adjustment sloping block and back adjustment sloping block is right angled. The sand blasting unit moves left and right and/or back and forth, and the transverse spraying angle alpha and the longitudinal spraying angle beta are adjusted by changing the inclination angle between the sand blasting outlet of the sand blasting unit and the hot rolled plate through corresponding adjusting inclined blocks. The distance adjusting device can be a screw mechanism, and the distance between the sand blasting unit and the hot rolled plate is adjusted through the screw mechanism. Racks, powered stepper motors or the like may also be employed to lift the blasting unit in a vertical direction to adjust the distance between the blasting outlet and the hot rolled plate.
The sand blasting unit comprises an impeller sand blasting equipment shell, a sand blasting impeller, an impeller sand blasting equipment driving motor, a sand blasting outlet and a sand blasting inlet; the sandblast impeller sets up in impeller sandblast equipment shell, and impeller sandblast equipment driving motor's motor shaft is connected with sandblast impeller's pivot, is equipped with the sandblast entry on the impeller sandblast equipment shell, and one side that impeller sandblast equipment shell and hot rolling board are adjacent is equipped with the sandblast export, and the material running surface that spouts of sandblast entry and the jet plane mutually perpendicular who spouts the export of sandblast.
The front side and the rear side of the shell of the impeller sand blasting equipment are respectively provided with a front baffle plate of the impeller sand blasting equipment and a rear baffle plate of the impeller sand blasting equipment, and the top end of the shell of the impeller sand blasting equipment is provided with an upper sealing plate of the impeller sand blasting equipment.
The sand blasting inlet and the sand blasting outlet are both provided with vertical curtains, and the vertical curtains are made of rubber belts.
The invention combines the advantages of sand blasting and shot blasting, the sand blasting unit can spray sand grains at high speed, the grain diameter of the sand blasting grains can be between the sand material of the sand blasting and the steel shot of the shot blasting, thereby not only providing the function of clearing the oxide layer on the surface of the hot rolled plate and improving the surface roughness, but also improving the fatigue resistance of the hot rolled plate and the hardness of the surface of the hot rolled plate and prolonging the service life. The invention can form a complete closed working negative pressure area to prevent dust from leaking. The upper sand blasting equipment and the lower sand blasting equipment are symmetrically distributed up and down to keep the stress on the hot rolled plate balanced up and down without deformation. The invention processes different oxide layer curves (thickness density) on the surface of the hot rolled plate according to different hot rolled plates with different thicknesses and different surface oxide layers by presetting the transverse spray angle alpha and the longitudinal spray angle beta of each sand spraying unit and the distance between the sand spraying unit and the hot rolled plate. When the surface of the hot rolled plate is subjected to sand blasting treatment, the transverse spraying angle alpha and the longitudinal spraying angle beta of a single sand blasting unit and the distance between the single sand blasting unit and the hot rolled plate are automatically adjusted according to an originally set treatment curve, reasonable surface oxide layer removing treatment is carried out, the oxide layer on the surface of the hot rolled plate is thoroughly removed, and the treatment quality can reach high quality.
The sand blasting chamber is provided with an inlet and an outlet, a sand blasting working surface is arranged between the inlet and the outlet, and the hot rolled plate is arranged on the sand blasting working surface. The sand blasting device comprises an upper sand blasting device and a lower sand blasting device, wherein the upper sand blasting device and the lower sand blasting device are arranged in a matrix shape, the upper sand blasting device and the lower sand blasting device are symmetrically arranged on the upper surface and the lower surface of a sand blasting chamber, each sand blasting unit is provided with an impeller sand blasting device shell, an impeller sand blasting device driving motor, a pair of turntables and a plurality of blades, sand blasting of each blade is in a parabolic shape and is installed between the pair of turntables to form a sand blasting impeller, and the. The front side and the rear side of the shell of the impeller sand blasting equipment are respectively provided with a rear baffle of the impeller sand blasting equipment and a front baffle of the impeller sand blasting equipment. The impeller sand blasting equipment is provided with a sand blasting outlet which is communicated with the interior of the sand blasting chamber. The angle adjusting device corresponds to the corresponding sand blasting unit and is used for adjusting the sand blasting outlet to correspond to the longitudinal and transverse spraying angles (the transverse spraying angle alpha and the longitudinal spraying angle beta) of the hot rolled plate, so that the sand blasting outlet of the sand blasting unit and the hot rolled plate are configured to be different in longitudinal and transverse angles. The distance adjusting device corresponds to the corresponding sand blasting unit and is used for adjusting the distance between the sand blasting outlets corresponding to the hot rolled plates on the sand blasting working line.
A plurality of longitudinal and transverse included angles are formed between a sand blasting outlet of the sand blasting unit and the upper surface and the lower surface of a hot rolled plate of the sand blasting chamber, the longitudinal included angles are a plurality of front and back inclined angles (longitudinal spraying angles beta) formed between the sand blasting outlet and the upper surface and the lower surface of the hot rolled plate, and the transverse included angles are a plurality of left and right inclined angles (transverse spraying angles alpha) formed between the sand blasting outlet and the upper surface and the lower surface of the hot rolled plate. The transverse jetting angle alpha is decreased from left to right in sequence, and the longitudinal jetting angle beta is increased from front to back in sequence; wherein the transverse spray angle alpha and the longitudinal spray angle beta of the blasting unit close to the central position of the blasting chamber are both 90 degrees.
The invention has the following positive effects: when the rust removing device is used for carrying out rust removing treatment on the surface of the hot rolled plate, the transverse and longitudinal spraying angles of the sand blasting unit can be respectively adjusted, and the distance between the sand blasting unit and the hot rolled plate can be changed, so that the device can be matched with hot rolled plate plates with different thicknesses, and the effects of higher efficiency, different metal material treatment requirements and unified surface treatment quality standard can be achieved.
Drawings
FIG. 1 is a schematic structural diagram of a blasting unit according to an embodiment of the invention;
FIG. 2 is a schematic side view of a blasting unit according to an embodiment of the invention;
FIG. 3 is a schematic view of a lateral arrangement of the sand blasting equipment according to the embodiment of the invention;
FIG. 4 is a schematic view of the longitudinal arrangement of the sand blasting equipment according to the embodiment of the invention;
FIG. 5 is a schematic top view of an exemplary upper sand blasting apparatus according to the present invention;
FIG. 6 is a schematic bottom view of a lower sand blasting apparatus according to an embodiment of the invention;
FIG. 7 is a front view of an angle adjustment apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic side view of an angle adjustment device according to an embodiment of the present invention;
in the figure: the device comprises an impeller sand blasting equipment shell 101, a sand blasting impeller 102, an impeller sand blasting equipment rear baffle 103, an impeller sand blasting equipment front baffle 104, an impeller sand blasting equipment driving motor 105, an impeller sand blasting equipment upper sealing plate 106, a sand blasting outlet 107, a sand blasting inlet 108, a bottom plate 109, a left adjusting inclined block 110, a front adjusting inclined block 111, a base 112, a right adjusting inclined block 113, a rear adjusting inclined block 114 and a hot rolling plate 207;
a first upper blasting unit a100, a second upper blasting unit a110, a third upper blasting unit a111, a fourth upper blasting unit a200, a fifth upper blasting unit a210, a sixth upper blasting unit a211, a seventh upper blasting unit a300, an eighth upper blasting unit a310, a ninth upper blasting unit a311, a tenth upper blasting unit a400, an eleventh upper blasting unit a410, and a twelfth upper blasting unit a 411;
a first lower sand blasting unit B100, a second lower sand blasting unit B110, a third lower sand blasting unit B111, a fourth lower sand blasting unit B200, a fifth lower sand blasting unit B210, a sixth lower sand blasting unit B211, a seventh lower sand blasting unit B300, an eighth lower sand blasting unit B310, a ninth lower sand blasting unit B311, a tenth lower sand blasting unit B400, an eleventh lower sand blasting unit B410 and a twelfth lower sand blasting unit B411;
an upper transverse spray angle alpha 1, an upper transverse spray angle II alpha 2, an upper transverse spray angle III alpha 3, a lower transverse spray angle IV alpha 4, a lower transverse spray angle V alpha 5 and a lower transverse spray angle VI alpha 6;
an upper longitudinal spray angle I beta 1, an upper longitudinal spray angle II beta 2, an upper longitudinal spray angle III beta 3, an upper longitudinal spray angle IV beta 4, a lower longitudinal spray angle V beta 5, a lower longitudinal spray angle VI beta 6, a lower longitudinal spray angle VII beta 7 and a lower longitudinal spray angle VIII beta 8;
Detailed Description
The invention is further described with reference to the following figures and examples:
a method for treating an oxide layer on the surface of a hot rolled plate is characterized in that sand blasting equipment with adjustable angle and distance is arranged in a sand blasting chamber, the sand blasting equipment is divided into upper sand blasting equipment and lower sand blasting equipment which are symmetrically arranged, each of the upper sand blasting equipment and the lower sand blasting equipment consists of a plurality of sand blasting units, each sand blasting unit can be used for carrying out transverse angle adjustment and longitudinal angle adjustment, the transverse angle adjustment is used for adjusting the transverse spraying angle alpha of each sand blasting unit along the width direction of the hot rolled plate, the longitudinal angle adjustment is used for adjusting the longitudinal spraying angle beta of each sand blasting unit along the length direction of the hot rolled plate, and the distance between each sand blasting unit and the hot rolled plate is adjustable; the hot rolled plate enters the sand blasting chamber from the inlet of the sand blasting chamber, passes through the upper sand blasting device and the lower sand blasting device, starts the upper sand blasting device and the lower sand blasting device, simultaneously performs sand blasting on the upper surface and the lower surface of the hot rolled plate, and performs all-dimensional rust removal on the hot rolled plate by adjusting the transverse spraying angle alpha, the longitudinal spraying angle beta and/or the distance between the sand blasting unit and the hot rolled plate.
The sand blasting units in the upper sand blasting equipment and the lower sand blasting equipment are the same in number and are arranged in a rectangular array, at least three rows of sand blasting units are arranged in the width direction, and at least three rows of sand blasting units are arranged in the length direction.
Set gradually three rows of sand blasting units from a left side to the right side on width direction, in the sand blasting room was entered into from the sand blasting room entry to the hot rolling board, be located left sand blasting unit and sand blast the hot rolling board towards the right side, the sand blasting unit that is located the centre sand blasting unit sand blast the hot rolling board perpendicularly, the sand blasting unit that is located the right side sand blast the hot rolling board towards the left side.
Set gradually four lines of sandblast units after to in the past on length direction, in the sandblast room was entered into from the sandblast room entry to the hot rolling board, first line sandblast unit and the second line sandblast unit all sandblast to the hot rolling board towards the place ahead, the third line sandblast unit sandblasts to the hot rolling board perpendicularly, and the fourth line sandblast unit sandblasts to the hot rolling board towards the back.
The transverse jetting angles alpha of three rows of sand blasting units arranged in the width direction are sequentially decreased progressively.
The longitudinal spraying angles beta of four rows of sand blasting units arranged in the length direction are sequentially increased.
An apparatus for treating an oxide layer on the surface of a hot rolled plate, comprising an upper sand blasting apparatus and a lower sand blasting apparatus which are arranged up and down in a sand blasting chamber and are arranged symmetrically with each other, and a hot rolled plate is arranged between the upper sand blasting apparatus and the lower sand blasting apparatus, characterized in that: upper portion sand blasting equipment and lower part sand blasting equipment constitute by a plurality of sand blasting units, and the sand blasting unit can carry out horizontal angle modulation and vertical angle modulation through angle adjusting device, horizontal angle modulation is adjusted the horizontal jet angle alpha of sand blasting unit for the width direction along hot rolling board, and vertical angle modulation is adjusted the longitudinal jet angle beta of sand blasting unit for the length direction along hot rolling board, and the distance accessible between sand blasting unit and the hot rolling board is adjusted apart from adjusting device.
The blasting unit comprises an impeller blasting equipment housing 101, a blasting impeller 102, an impeller blasting equipment driving motor 105, a blasting outlet 107 and a blasting inlet 108; the sand blasting impeller 102 is arranged in the impeller sand blasting equipment shell 101, a motor shaft of the impeller sand blasting equipment driving motor 105 is connected with a rotating shaft of the sand blasting impeller 102, a sand blasting inlet 108 is formed in the impeller sand blasting equipment shell 101, a sand blasting outlet 107 is formed in one side, adjacent to a hot rolled plate, of the impeller sand blasting equipment shell 101, and the center line of the sand blasting inlet 108 is perpendicular to the center line of the sand blasting outlet 107.
The front side and the rear side of the impeller sand blasting equipment shell 101 are respectively provided with an impeller sand blasting equipment front baffle 104 and an impeller sand blasting equipment rear baffle 103, and the top end of the impeller sand blasting equipment shell 101 is provided with an impeller sand blasting equipment upper sealing plate 106.
The specific using process of the invention is as follows: the carborundum enters the sand blasting impeller 102 from the sand blasting inlet 108, the impeller sand blasting equipment driving motor 105 drives the sand blasting impeller 102 to rotate at a high speed (the rotating speed is adjustable), the sand blasting impeller 102 rotating at the high speed drives the carborundum to rotate, and the carborundum particles are ejected from the sand blasting outlet at a high speed due to centrifugal force and are ejected onto a hot rolled plate in a sand blasting chamber. The blasting particles in this embodiment may be ceramic sand, glass beads, nylon sand, quartz sand, silicon carbide, iron sand, or metal fine balls. The blasting particles sprayed from the blasting outlet 107 are blasted against the surface of the hot rolled plate at various angles, thereby achieving the purpose of rust removal. The impeller blasting equipment front baffle 104 and the rear impeller blasting equipment rear baffle 103 are used for protecting the impeller blasting equipment shell 101, and the service life of the blasting unit is prolonged. In addition, the sand blasting unit can also be provided with a programmable control motor to adjust the rotating speed.
As shown in fig. 5 and 6, the sandblasting booth has an inlet and an outlet, and an upper sandblasting apparatus and a lower sandblasting apparatus are disposed between the inlet and the outlet and are symmetrically disposed up and down so that the forces of the up-and-down blasting can be offset to maintain the flatness of the metal plate. The upper portion sand blasting equipment and the lower part sand blasting equipment all have the sandblast unit to constitute, and the sandblast unit that is located the upper portion is four rows three rows and arranges, and wherein the sandblast unit that is located the first line is: the first upper sand blasting unit A100, the second upper sand blasting unit A110 and the third upper sand blasting unit A111; the blasting units in the second row are respectively: an upper blasting unit four a200, an upper blasting unit five a210, an upper blasting unit six a 211; the blasting units in the third row are: an upper blasting unit seven a300, an upper blasting unit eight a310, an upper blasting unit nine a 311; the blasting units in the fourth row are respectively: an upper blasting unit deca 400, an upper blasting unit eleven a410, and an upper blasting unit twelve a 411. The sandblast unit that is located the lower part also is four rows three rows and arranges, and wherein the sandblast unit that is located first line is: a first lower sand blasting unit B100, a second lower sand blasting unit B110 and a third lower sand blasting unit B111; wherein the blasting units in the second row are respectively: a lower blasting unit four B200, a lower blasting unit five B210, and a lower blasting unit six B211; wherein the blasting units in the third row are respectively: a lower blasting unit seven B300, a lower blasting unit eight B310, a lower blasting unit nine B311; wherein the blasting units in the fourth row are respectively: a lower sand blasting unit deca 400, a lower sand blasting unit eleven B410, and a lower sand blasting unit twelve B411.
The transverse spray angles between the first upper sand blasting unit a100, the second upper sand blasting unit a110 and the third upper sand blasting unit a111 positioned in the first upper row and the upper surface of the hot-rolled sheet are an upper transverse spray angle A1, an upper transverse spray angle b2 and an upper transverse spray angle tri a3, respectively; the lateral spray angles between the first lower blasting unit B100, the second lower blasting unit B110, and the third lower blasting unit B111 in the first lower row and the lower surface of the hot-rolled sheet are a lower lateral spray angle four α 4, a lower lateral spray angle five α 5, and a lower lateral spray angle six α 6, respectively.
Longitudinal spray angles between the first upper sand blasting unit A100, the fourth upper sand blasting unit A200, the seventh upper sand blasting unit A300 and the tenth upper sand blasting unit A400 in the first upper row and the upper surface of the hot rolled plate are an upper longitudinal spray angle beta 1, an upper longitudinal spray angle beta 2, an upper longitudinal spray angle tri beta 3 and an upper longitudinal spray angle tetra beta 4 respectively; the longitudinal spray angles between the first lower sand blasting unit B100, the fourth lower sand blasting unit B200, the seventh lower sand blasting unit B300, the tenth lower sand blasting unit B400 and the lower surface of the hot rolled sheet in the first lower row are a lower longitudinal spray angle penta β 5, a lower longitudinal spray angle hexa β 6, a lower longitudinal spray angle hepta β 7 and a lower longitudinal spray angle octa β 8, respectively. A longitudinal upper blasting working line is arranged between the first A100 blasting outlet of the first upper blasting unit and the upper surface of the hot rolled plate 207, a longitudinal lower blasting working line is formed between the first B100 blasting outlet of the second lower blasting unit and the lower surface of the hot rolled plate 207, the upper blasting working line and the lower blasting working line are symmetrical, and blasting forces can be offset with each other to maintain the flatness of the metal plate.
In the case of the upper sand blasting apparatus, the upper longitudinal blasting angle β 1 is about 85 degrees, the upper longitudinal blasting angle two β 2 is about 87 degrees, the upper longitudinal blasting angle three β 3 is about 90 degrees, and the upper longitudinal blasting angle four β 4 is about 95 degrees. The hot rolled plate entering the inlet of the sand blasting chamber can be blasted at a small angle at the beginning, the oxide layer on the surface of the hot rolled plate is removed in a relatively oblique impacting mode at a small inclination angle, and the cleaning function is relatively strong. After the hot rolled plate is blasted by the sand blasting units in the first row, the hot rolled plate is sent to the sand blasting units in the second row, the upper longitudinal spraying angle II beta 2 of the sand blasting units in the second row is slightly increased, the upper longitudinal spraying angle III beta 3 of the sand blasting units in the third row is increased again, and the upper longitudinal spraying angle IV beta 4 of the sand blasting units in the fourth row is increased again, so that the blasting force is more in a positive impact mode to treat the fatigue resistance or the hardness of the workpiece. The lower blasting apparatus operates on the same principle as the upper blasting apparatus.
The angle adjusting device of the embodiment has the following structure: a bottom plate 109 and a base 112 which are arranged up and down are arranged below the shell of the impeller sand blasting equipment, and a left adjusting inclined block 110 and a right adjusting inclined block 113 which are symmetrically arranged left and right are arranged between the shell of the impeller sand blasting equipment and the bottom plate 109; two front adjusting inclined blocks 111 and two rear adjusting inclined blocks 114 which are symmetrically arranged in front and rear are arranged between the bottom plate 109 and the base 112, and a first jet orifice and a second jet orifice which are matched with the sand blasting outlet 107 are respectively arranged on the bottom plate 109 and the base 112; the left adjusting inclined block 110, the front adjusting inclined block 111, the right adjusting inclined block 113 and the rear adjusting inclined block 114 are wedge-shaped blocks, the left adjusting inclined block 110 inclines towards the sand blasting outlet 107 from left to right, the right adjusting inclined block 113 inclines towards the sand blasting outlet 107 from right to left, the front adjusting inclined block 111 inclines towards the sand blasting outlet 107 from front to back, and the rear adjusting inclined block 114 inclines towards the sand blasting outlet 107 from back to front. The cross sections of the left adjusting inclined block 110, the front adjusting inclined block 111, the right adjusting inclined block 113 and the rear adjusting inclined block 114 are all right-angled triangles.
The distance adjusting device of the embodiment adopts a rack or a powered stepping motor and the like to lift the sand blasting unit along the vertical direction to adjust the distance between the sand blasting outlet and the hot rolled plate.
The sandblast unit is including sealed wear-resisting rubber pad, after the angle or the height adjustment of sandblast unit, can produce the space between the flange of sandblast unit bottom and the sandblast unit, and the sealed pad of this embodiment can prevent that the fine particle of sandblast rust cleaning process from overflowing. The sprayed particles can be recycled by matching with related filtering and recycling equipment, and the development trend of environmental protection at present is met.
The invention can also be matched with hot rolled plates with different thicknesses in advance, the plurality of sand blasting units can preset the blasting angles and heights of the individual sand blasting units according to the hot rolled plates with different thicknesses to form corresponding blasting treatment curves, and one thickness corresponds to one group of treatment curves. The angle and distance adjustment means may be associated with a computer or associated recordable means for recording the associated angle and height and with appropriate drive means such as stepper motors or gears, etc., whereby the plurality of blasting units may be automatically moved to the associated predetermined blasting angle or height. When surface treatment is required, the corresponding spraying angle and height of the sand blasting unit are automatically driven according to the originally set treatment curve, so that the flexible surface treatment is provided, the flexible surface treatment is suitable for hot rolled plates with different thicknesses, and good surface rust removal treatment quality can be achieved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method for treating an oxide layer on the surface of a hot-rolled plate is characterized by comprising the following steps: the sand blasting chamber is internally provided with sand blasting equipment with adjustable angle and distance, the sand blasting equipment is divided into upper sand blasting equipment and lower sand blasting equipment which are symmetrically arranged, each of the upper sand blasting equipment and the lower sand blasting equipment consists of a plurality of sand blasting units, each sand blasting unit can be used for carrying out transverse angle adjustment and longitudinal angle adjustment, the transverse angle adjustment is to adjust the transverse jetting angle alpha of each sand blasting unit along the width direction of a hot rolled plate, the longitudinal angle adjustment is to adjust the longitudinal jetting angle beta of each sand blasting unit along the length direction of the hot rolled plate, and the distance between each sand blasting unit and the hot rolled plate is adjustable; the hot rolled plate enters the sand blasting chamber from the inlet of the sand blasting chamber, passes through the upper sand blasting device and the lower sand blasting device, starts the upper sand blasting device and the lower sand blasting device, simultaneously performs sand blasting on the upper surface and the lower surface of the hot rolled plate, and performs all-dimensional rust removal on the hot rolled plate by adjusting the transverse spraying angle alpha, the longitudinal spraying angle beta and/or the distance between the sand blasting unit and the hot rolled plate.
2. A method for hot rolled sheet surface oxidation treatment according to claim 1, characterized in that: the sand blasting units in the upper sand blasting equipment and the lower sand blasting equipment are the same in number and are arranged in a rectangular array, at least three rows of sand blasting units are arranged in the width direction, and at least three rows of sand blasting units are arranged in the length direction.
3. A method for hot rolled sheet surface oxidation treatment according to claim 2, characterized in that: set gradually three rows of sand blasting units from a left side to the right side on width direction, in the sand blasting room was entered into from the sand blasting room entry to the hot rolling board, be located left sand blasting unit and sand blast the hot rolling board towards the right side, the sand blasting unit that is located the centre sand blasting unit sand blast the hot rolling board perpendicularly, the sand blasting unit that is located the right side sand blast the hot rolling board towards the left side.
4. A method for hot rolled sheet surface oxidation treatment according to claim 2, characterized in that: set gradually four lines of sandblast units after to in the past on length direction, in the sandblast room was entered into from the sandblast room entry to the hot rolling board, first line sandblast unit and the second line sandblast unit all sandblast to the hot rolling board towards the place ahead, the third line sandblast unit sandblasts to the hot rolling board perpendicularly, and the fourth line sandblast unit sandblasts to the hot rolling board towards the back.
5. A method for hot rolled sheet surface oxidation treatment according to claim 3, characterized in that: the transverse jetting angles alpha of three rows of sand blasting units arranged in the width direction are sequentially decreased progressively.
6. The method of claim 4, wherein the step of applying the oxide layer to the surface of the hot rolled plate comprises: the longitudinal spraying angles beta of four rows of sand blasting units arranged in the length direction are sequentially increased.
7. The utility model provides an equipment for hot rolling board surface oxidation layer is handled, contains upper portion sand blasting equipment and the lower part sand blasting equipment of arranging in the sandblast room from top to bottom, and both mutual symmetrical arrangement is equipped with hot rolled plate between upper portion sand blasting equipment and the lower part sand blasting equipment, its characterized in that: upper portion sand blasting equipment and lower part sand blasting equipment constitute by a plurality of sand blasting units, and the sand blasting unit can carry out horizontal angle modulation and vertical angle modulation through angle adjusting device, horizontal angle modulation is adjusted the horizontal jet angle alpha of sand blasting unit for the width direction along hot rolling board, and vertical angle modulation is adjusted the longitudinal jet angle beta of sand blasting unit for the length direction along hot rolling board, and the distance accessible between sand blasting unit and the hot rolling board is adjusted apart from adjusting device.
8. The apparatus according to claim 7, wherein: the sand blasting unit comprises an impeller sand blasting equipment shell (101), a sand blasting impeller (102), an impeller sand blasting equipment driving motor (105), a sand blasting outlet (107) and a sand blasting inlet (108); sandblast impeller (102) set up in impeller sand blasting equipment shell (101), and the motor shaft of impeller sand blasting equipment driving motor (105) is connected with sandblast impeller's (102) pivot, is equipped with sandblast entry (108) on impeller sand blasting equipment shell (101), and one side that impeller sand blasting equipment shell (101) and hot rolled plate are adjacent is equipped with sandblast export (107), and the central line of sandblast entry (108) and the central line mutually perpendicular of sandblast export (107).
9. The apparatus according to claim 8, wherein: the front side and the rear side of the impeller sand blasting equipment shell (101) are respectively provided with an impeller sand blasting equipment front baffle (104) and an impeller sand blasting equipment rear baffle (103), and the top end of the impeller sand blasting equipment shell (101) is provided with an impeller sand blasting equipment upper sealing plate (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110201796.7A CN112873059A (en) | 2021-02-23 | 2021-02-23 | Method and equipment for treating oxide layer on surface of hot rolled plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110201796.7A CN112873059A (en) | 2021-02-23 | 2021-02-23 | Method and equipment for treating oxide layer on surface of hot rolled plate |
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| CN202110201796.7A Withdrawn CN112873059A (en) | 2021-02-23 | 2021-02-23 | Method and equipment for treating oxide layer on surface of hot rolled plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205218853U (en) * | 2015-12-10 | 2016-05-11 | 重庆明治百通机械制造有限公司 | Pipe inner wall sand jet micromatic setting |
| CN108044516A (en) * | 2018-01-09 | 2018-05-18 | 江阴振宏重型锻造有限公司 | Grid type blasting craft |
| CN109968207A (en) * | 2018-12-16 | 2019-07-05 | 凯美德工程公司 | Surface processing device for grid manufacturing device |
| CN110815057A (en) * | 2019-11-05 | 2020-02-21 | 昆山亚比斯环保包装材料有限公司 | Treatment method of acid-free phosphatized metal plate |
| CN111451945A (en) * | 2020-04-08 | 2020-07-28 | 昆山亚比斯环保包装材料有限公司 | Adjustable impeller spraying bin |
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2021
- 2021-02-23 CN CN202110201796.7A patent/CN112873059A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205218853U (en) * | 2015-12-10 | 2016-05-11 | 重庆明治百通机械制造有限公司 | Pipe inner wall sand jet micromatic setting |
| CN108044516A (en) * | 2018-01-09 | 2018-05-18 | 江阴振宏重型锻造有限公司 | Grid type blasting craft |
| CN109968207A (en) * | 2018-12-16 | 2019-07-05 | 凯美德工程公司 | Surface processing device for grid manufacturing device |
| CN110815057A (en) * | 2019-11-05 | 2020-02-21 | 昆山亚比斯环保包装材料有限公司 | Treatment method of acid-free phosphatized metal plate |
| CN111451945A (en) * | 2020-04-08 | 2020-07-28 | 昆山亚比斯环保包装材料有限公司 | Adjustable impeller spraying bin |
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