CN103160657A - Plant and method for hot forming blanks - Google Patents
Plant and method for hot forming blanks Download PDFInfo
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- CN103160657A CN103160657A CN2012105990390A CN201210599039A CN103160657A CN 103160657 A CN103160657 A CN 103160657A CN 2012105990390 A CN2012105990390 A CN 2012105990390A CN 201210599039 A CN201210599039 A CN 201210599039A CN 103160657 A CN103160657 A CN 103160657A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a heating device, in particular an austenitization device (2), for a plant (10) for hot forming blanks (P), wherein the heating device is embodied for locally heating, in particular austenitization, of regions of the blanks (P) and encompasses at least one burner. According to the invention, provision is made for means for moving the burner and/or the flame of the burner to the regions, which are provided for the local heating.
Description
Technical field
The present invention relates to a kind of heating unit for thermoforming blank equipment, particularly austenitizing device, wherein said heating unit is used for local heating, particularly austenitizing are carried out in the zone of blank, and comprises at least one burner.The invention still further relates to the corresponding equipment for the thermoforming blank, also relate to the corresponding method for the thermoforming blank, wherein at least one zone of blank is locally heated, austenitizing particularly, and by compression moulding.
Background technology
The thermoforming of sheet metal is present parts manufacturing, particularly the relatively new developing direction of car body component manufacturing.In this application, follow the term of determining of field shaping technique, sheet metal is called as " blank " accordingly.In principle, blank is the sheet metal that makes by cutting, die-cut, connection and/or premolding.Yet, can not only for the sheet metal of corresponding preparation, also can be used in the body material of various different purposes according to method of the present invention.Therefore the present invention extends to all workpiece or work in-process, and described workpiece or work in-process can make by corresponding moulding process, for example compacting and/or deep-draw.
Thermoforming makes the element that makes have high stability and complex geometric shapes, and can resilience, and can be in the body of a motor car manufacturing loss of weight and improve security significantly, for example increase the security of the passenger on car.
Along with for structure unit, particularly the demand for the stability of structure unit in vehicle and rigidity is more and more higher, and high-strength steel and ultrahigh-strength steel are more and more used.The increase of stability can reduce the weight of automobile, and this can further reduce the discharging of pollutent and the consumption of fuel again.With regard to present vehicle, use thermoforming parts can the highest weight that reduces 25kg.
In fact, thermoforming process combines moulding and modified technology.By using corresponding steel, manganese-boron steel for example, stability can reach over 1500MPa.Pressure (press-hardening) method of quenching comprises, for example, the heating blank for example higher than 850 ℃, then makes blank cooling fast to the temperature higher than the complete austenitizing temperature in instrument.Form thus the martensitic stucture with desirable stability.Moulding and quench in instrument be combined with the time quench or moulding quench (form-hardening) also referred to as pressure.In principle, so-called roller hearth furnace is used to preheated charge, uses the thermoforming of ultrastrength material to carry out body of a motor car.The heating of this stove relies on steel pipe to carry out usually, and described steel pipe heats by electrically heated or by gas burner.In order to obtain the short process-cycle of trying one's best, need to have " supply " of certain preheating parts in equipment.The temperature controlled heat treatment time that is used for steel is an important parameter, and it has defined the clock period of corresponding press.Yet due to the poor efficiency during lower than 600 ℃ when temperature, the efficient of roller hearth furnace is lower.The length of roller hearth furnace is up to 50 meters, and this just needs corresponding structural condition, comprises the efficiently radiates heat of waste heat.The drum-type melting furnace is used for substituting roller hearth furnace preheating component, has equally corresponding defective.They are also to heat by steel pipe, and can not be satisfactory aspect efficient.
The pressure parts of quenching have high stability and high rigidity.As mentioned above, the thickness of metal sheet can reduce thus, thereby can reduce weight.Yet it is problematic pressing the low ultimate strain of the parts of quenching, and this can cause for example forming slight crack in the welding of subsequent parts in subsequently production operation.Therefore, need to specifically process for some zone of vehicle body, for example press and quench, and process other zone is concrete, make them have high ductility, and therefore can absorb more energy by viscous deformation.
at present for generation of this local different qualities, namely the method for so-called " customization performance " comprises the alloying element of the corresponding semifinished part of specific effect, the production of so-called " customization welding blank ", the production of the blank that is therefore connected by differing materials, carry out part (part) heating by induction heating or conduction heating technology, by local heating, pressure the quench specific region of instrument is carried out portion temperature and controlled, the pressure parts of quenching are carried out the part tempering, and to some component area shielding, thereby be suppressed at the heating (and so austenitizing) in corresponding roller hearth furnace.Yet these methods are large-scale, and its result often can't be satisfactory and be caused too high cost.
Therefore need Innovative method to provide to have the blank of local different performance.
Summary of the invention
Due to above-mentioned situation, the invention provides a kind of heating unit for thermoforming blank equipment, austenitizing device particularly, and corresponding equipment, wherein said heating unit is used for local heating is carried out in the particularly austenitizing zone of blank, and comprise at least one burner, and it is characterized in that, be provided for the flame of mobile burner and/or burner to the device in the zone that needs local heating.
The present invention also provides a kind of method for the thermoforming blank, at least one zone of wherein said blank is locally heated, austenitizing particularly, and by compression moulding, it is characterized in that, biscuit area to be heated heats by at least one burner, and wherein the flame of the burner in blank zone to be heated and/or burner is moved.
Preferred embodiment is the theme of dependent claims and following content.
The measure that proposes according to the present invention comprises, heating unit at the equipment that is used for the thermoforming blank, mobile burner and/or the burner flame device to the zone that needs local heating particularly is provided in the austenitizing device, wherein, described heating unit is used for local heating is carried out in some zones of blank, austenitizing particularly, and comprise at least one burner.
As mentioned above, term " blank " should be understood in the mode of broad sense in the application's context.This term comprises sheet metal, work in-process, connection and/or preformed element, and they carry out thermoforming at corresponding equipment, particularly press and quench.
An important aspect of the present invention is to use the device that is used for mobile burner and/or burner flame.Only in this way could only carry out laser heating and not heat whole blank the specific region of blank.The device of mobile burner or burner flame makes it possible to blank is had the accurate local heating of high spatial resolution.Compare with fixing burner, movably burner has advantages of that handiness increases.In addition, burner can accurately be moved to zone to be heated.
According to the present invention, one or more burners with relative flammule and/or narrow flame core can be moved through zone to be heated, make zone to be heated be heated uniformly in all positions.Due to the high centrality of burner flame, the present invention another aspect makes and can heat the zonule.Yet in the situation that fixing burner, laser heating need to use the flame in the whole zone to be heated of larger covering, but weak point is and can not accurately heats the zonule.This is because if use a plurality of little burners, the degree of heat in the zone between each burner flame is weaker than the zone that affected by flame.
According to heating unit of the present invention, particularly austenitizing device, be used for carrying out part heating, particularly austenitizing, therefore be used for the specific region of blank or regional area heats or austenitizing.Therefore at least one burner flame of burner can be aimed at needs part heating, the particularly zone of austenitizing.Therefore the local austenitizing that can set the zone of corresponding burner arrangement, for example quench by pressure subsequently, can reach high local stability.Yet, after pressure is quenched, guarantee to have lower hardness and higher swelling property at austenite region not.
The device of mobile burner preferably includes automatic gear.Term " automatic gear " is interpreted as a kind of machine or a kind of industrial automatic gear especially, it can be given an order and/or be controlled, and burner can be moved to the position of expectation, perhaps tilts, perhaps rotary burner, make burner flame have influence on zone to be heated.The instruction sequence that offers automatic gear that moves through of burner occurs, and perhaps is connected with the automatic gear assembly sensor or with sensor, and described sensor provides mobile burner information needed.Automatic gear can have mechanical arm, fixture or other fixing device for burner, and controller.
The automatic gear and the general device that are used for mobile burner make burner to move, to rotate and/or to tilt on three directions.Yet, generally have one or two linear guides or linear entrance to make burner move on a direction (linearity) or both direction (two dimension) just enough.
In a preferred embodiment of the invention, use the hydrogen-oxygen burner; Fuel-oxygen burner, particularly fuel gas-oxygen burner or acetylene burner.These burner types are known in principle, for example pass through DE10345411A1.The term acetylene burner comprises acetylene-oxygen burner and acetylene-air burner.
Particularly advantageous is to use premix burner.For example, also use pre-mixed fuel gas-oxygen burner, be used for so-called glass component, the flame polish of the parts of particularly being made by plumbous crystal glass or soda-lime glass.By the flame of burner, the surface of at least a portion glass component is heated and melts.Corresponding burner is also referred to as the hydropox burner, its defending party to the application sell with this trade name.
Being characterized as of pre-mixed fuel gas-oxygen burner, particularly hydrogen-oxygen burner has extra high heat transfer efficiency.Opposite with so-called external mix burner, the gaseous mixture of fuel gas and oxygen has been fed into the combustion head of pre-mixed fuel gas-oxygen burner, rather than first generates in corresponding combustion head.Premix burner produces hard flame, and described hard flame is applicable to melt large surface area, comprises pit or other is irregularly shaped.According to design of the present invention, this is the advantage very large with respect to the external mix burner.The external mix burner can only produce the soft fire of corner, hole or the pit on the surface of can not permeating.Therefore use premix burner can carry out local heating to the zone in the zone of respective blanks, particularly different moulding especially.Although the external mix burner also can reach a high temperature by long-time heating, the risk that exists blank integral body to be heated rather than only to be heated in desired regions.The burner that uses according to the present invention can be arranged in equipment or be arranged on device downstream, between equipment and downstream operated pressing tool.
For the local heating blank, advantageously burner comprises a plurality of nozzles, and fuel-oxygen or hydrogen-oxygen mixing or acetylene-air or acetylene-oxygen mixture spray from described nozzle.In a preferred embodiment, burner has 100-1000 nozzle.Realize by this way the height laser heating is carried out in zone to be heated.
Nozzle is distributed on the burner head zone that width is 50-400mm.The burner that is covered by nozzle or the area of burner head are preferably selected according to the size in zone to be heated.
Advantageously, burner has a plurality of nozzles, and described nozzle is close-packed arrays each other, has less diameter.Can realize by this way blank to be heated or biscuit area are carried out the height laser heating.Advantageously, the diameter of nozzle is less than 2mm, or less than 1.5mm.For example, the diameter of nozzle is 0.5mm-1.3mm.The preferred close-packed arrays of nozzle is to guarantee the height laser heating.According to the size of nozzle, the distance between two adjacent nozzles is 1mm-4mm.
In a preferred embodiment of the invention, the output rating that comprises the heating unit of one or more burners is 50-500kW.Usually, the output rating of a burner is 30-150kW.According to needing, one or more burners are installed.The output rating of one or more burners is distributed to a plurality of nozzles, makes the burner output rating for each nozzle keep relatively low, thereby avoids the blank local heating too high.
According to a particularly preferred embodiment according to the invention, heating unit is specially the austenitizing device.By using pre-mixing hydrogen-oxygen burner or pre-mixed fuel-oxygen burner, efficient manner is carried out local austenitizing especially.The complete austenitizing of blank also can be especially fast and the mode of high energy efficiency realize.
It should be appreciated that, in context, also can realize by the heating unit with removable burner the part dipping (maceration) in the zone of blank.For this purpose, should guarantee, for example, heating unit only is heated to temperature lower than austenitic temperature with the respective regions of blank.
Preferred heating unit, particularly austenitizing device are used for particularly the local heating blank to 750-1050 ℃, and particularly 800-1000 ℃, the temperature of 850-950 ℃ for example.Corresponding temperature depends on different materials, and higher than austenitizing temperature.For manganese-boron steel, for example, described austenitizing temperature is approximately 850 ℃.In the situation that corresponding blank only is preheating to temperature lower than austenitizing temperature, can particularly meet or exceed fast austenitizing temperature in predetermined biscuit area by corresponding burner.
Equipment according to thermoforming blank of the present invention has above-mentioned heating unit for the local heating blank and is used for the pressing unit that blank is heated in moulding.
Advantageously, this equipment also comprises at least one filling device and/or at least one transport unit, and described filling device is used for to equipment filling blank, and described transporter is used for transmitting blank at least one pressing unit of equipment.By corresponding device, can operate corresponding equipment, owing to carrying out efficient preheating according to the present invention by burner movably, described operation can have the faster clock period (clock cycle), and this is significantly reduced in time because of the heating that limited step in correlation method is blank.
By the primary heater unit of heating unit upstream, can reduce the clock period especially.At first blank by primary heater unit, is heated at this fully.The specific region of blank is heated again by heating unit of the present invention subsequently, or further is heated.
Advantageously, described at least one primary heater unit comprises at least one chain-bucket stove.Be known that in principle, upright chain-bucket stove can be used as the chain-bucket stove, the energy efficiency that described upright chain-bucket stove and accessory is improved, and especially have advantages of and to substitute common roller hearth furnace, as mentioned above, described common roller hearth furnace is a large-scale design and therefore needs corresponding structural condition.For example, the chain-bucket stove can be by electrically heated, or heats by fuel, and can move in corresponding temperature range, has therefore guaranteed the heating of high efficient and reliable.
Advantageously, corresponding equipment comprises primary heater unit, and described primary heater unit is used for blank is preheating to 450-850 ℃, and particularly 600-800 ℃ is for example the temperature of 650-750 ℃.In another embodiment, primary heater unit is used for blank is preheating to the temperature of 450-550 ℃.Advantageously, corresponding preheating temperature is only lower than the austenitizing temperature lower limit of respective material, or lower than corresponding austenitizing temperature lower limit certain distance, makes by preheated charge also not reach complete austenitizing to material.The temperature of using depends on the material of blank.As mentioned above, for example, the complete austenitizing temperature of manganese-boron steel is 850 ℃.Those skilled in the art can derive corresponding temperature by the key graphic (key figures) of current material.Because the distance austenitizing temperature only has relatively little distance, corresponding preheating make can Energy Efficient mode particularly carry out at short notice subsequently partial austenitizing in (restriction) zone of predetermined blank.As mentioned above, by being heated to the temperature lower than austenitizing temperature, can also obtain the part dipping of respective blanks material.
Above-mentioned primary heater unit has at least one pre-mixing hydrogen-oxygen burner or fuel gas-oxygen burner is favourable.Can realize thus blank is carried out the high efficiency preheating that a zone connects a zone.
Advantageously, heating unit, particularly austenitizing device, and primary heater unit is united becomes structural unit.This can obtain compact device, and it has miniaturization Design, and moves in the mode of Energy Efficient, for example, only needs heat insulation.
Advantageously described heating unit has shell.Thermosteresis when reducing by this way the blank local heating, and therefore raise the efficiency.
The present invention is used for making in an advantageous manner the car body component of automobile, for example the B post of automobile framework.This car body component has particular requirement for performances such as hardness, stability of material and swelling property.Blank especially for this purpose can not be too crisp, otherwise in moulding process and weldprocedure, may produce the crack in material, and described moulding process and weldprocedure are indispensable in the car body component manufacturing processed.
Be used for heating according to the present invention, particularly one or more burners of austenitizing produce the waste gas of moisture or water vapour.When these water-containing waste gas arrive primary heater unit, produce dew point in primary heater unit, this can cause the content of diffusible hydrogen in the metal construction of blank to increase.Therefore blank becomes more crisp, and material above-mentioned crack (" delayed fracture ") may occur.
Therefore preferably provide and stop waste gas to enter device primary heater unit from one or more burners of heating unit.In a preferred embodiment, be provided for for this reason with waste gas from shell extract out air extractor.For this reason, shell comprises one or more ventilation holes, and described ventilation hole is connected with draw-out device.Waste gas not only flows out from ventilation hole, but also is removed energetically.In ventilation hole and shell, blank feed mouth or discharge port are different.
Preferably, being arranged so that of ventilation hole keeps waste gas to produce in the enclosure away from the air-flow of opening for feed, enters to prevent waste gas the primary heater unit that is connected to the upstream by opening for feed.In addition, can be opening for feed gas hood is provided, particularly the nitrogen cover.Gas, for example nitrogen blows into the feed hole area in shell, forms the airbond of waste gas.Substitute gas hood or except gas hood, also available slide block, air door or other mechanism are closed opening for feed, thus prevention waste gas.
If in the step that the downstream of shell is further processed, described step is responsive to the moisture of waste gas or other composition or feature, corresponding sfgd. also can be set enter the discharge port of shell to prevent waste gas.
Be characterised in that according to the method for the blank thermoforming of the present invention, by at least one burner, the zone of blank is heated, wherein the flame of burner and/or burner moves towards biscuit area to be heated, and this blank is by compression moulding subsequently.
In one embodiment, according to the present invention, blank is loaded in equipment, be preheating to preheating temperature in the primary heater unit of equipment, in heating unit, particularly be locally heated at least or austenitizing in the austenitizing device, and in pressing unit by compression moulding.Need to prove, drawing method can be to press the method for quenching.
According to the equipment of thermoforming blank of the present invention, according to the heating unit of the partial austenitizing of the blank for described equipment of the present invention, and have advantages of above-mentioned similar according to the method for corresponding thermoforming of the present invention and partial austenitizing.
Do not departing from the scope of the present invention in situation, the feature that the preamble that the below introduces is not mentioned not only can be used for combination separately, and can be used for other combination or use separately.
In the accompanying drawings the present invention is illustrated by exemplary, and describe the present invention below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 has shown the equipment according to the thermoforming blank of the preferred embodiments of the invention.
Fig. 2 has shown burner head that prior art is used and that use according to one embodiment of the invention.
Fig. 3 has shown the schema according to the thermoforming blank method of one embodiment of the invention.
Embodiment
In the accompanying drawings, identical element or the element with same effect have identical Reference numeral, no longer describe for reason clearly.
Fig. 1 has shown the equipment that is used for the thermoforming blank according to a preferred embodiment of the present invention.Whole Equipment is with 10 expressions.It has filling device 3, respective blanks P in filling device 3, and for example stamped sheet metal, be packed in relevant device along the direction of arrow (lower horizontal arrow).Primary heater unit 4 is provided, is illustrated as the chain-bucket stove herein.Blank P is added into the lower region of primary heater unit 4 along the direction of arrow, then rise (representing with vertical arrows), and in uphill process by laser heating.About the temperature of using in primary heater unit 4, reference is content above.
At the upper area of primary heater unit 4, blank P leaves again along the direction of arrow (upper level arrow).By comprising the austenitizing device 2 of burner 1, described burner 1 is expressed as three flame burners 1 here subsequently for they.Burner 1 can comprise the burner flame of any amount.Burner 1 also moves, and can affect continuously the different zones of blank P.For this purpose, can provide corresponding running gear, this running gear also can be for example by using corresponding controller to carry out full automatic control.Blank P by austenitizing device 2, and is heated to above the temperature of the austenitizing temperature of material here along the direction of arrow at least at predetermined regional area.
Blank P arrives transport unit 5 subsequently, and is sent to for example operated pressing tool, and described operated pressing tool does not have shown in Figure 1.
According to a preferred embodiment of the spendable burner head of the present invention shown in Fig. 2 (right side).In order to further illustrate, the burner head that uses according to prior art is shown in Fig. 2 (left side)
The so-called external mix burner head that uses according to prior art is labeled as 21, and the premix burner head mark of using according to the present invention is 22.
For example, external mix burner head 21 has the pipeline 211 that is arranged on outside pipeline 212 and is arranged on inside, and described pipeline 212 is used for supply oxygen, and described pipeline 211 is used for providing fuel gas, particularly hydrogen.At first the gas that provides by two passages mix in the zone of burner nozzle 213.It has been determined that corresponding so-called external mix burner produces relatively soft flame, it can only be applicable to purpose of the present invention conditionally.Minor increment between two burner nozzles 213 is further limited by the size of fuel gas supply line 211 and oxygen feed line 212.This means that fuel oil atomizer 213 distance each other can not less than certain minor increment, limit the quantity of the fuel oil atomizer 213 in each length thus.
Guarantee that improved energy shifts much hard that combustion flame can generate with the pre-mixing hydrogen-oxygen burner that the present invention uses, this pre-mixing hydrogen-oxygen burner has common passage 221, by this passage, the hydrogen-oxygen mixture is fed to burner head 22.For example particularly have pit or more the zone of complex configuration can more reliable mode be heated.Corresponding gaseous mixture flows out and is lighted from nozzle 223.In addition, burner nozzle 223 can be than externally arranging closelyr in mixing burner.The close-packed arrays of burner nozzle 223 can be so that blank be heated more uniformly.
Fig. 3 has shown the schema of the method for a particularly preferred embodiment of the present invention.In the first method steps 101, go out respective blanks P by metallic plate punching.In method steps 102, blank for example is loaded into according in thermal forming device of the present invention by filling device.This step can be carried out continuously.In step 103, blank P is preheated in equipment, can use said apparatus for this reason.In step 104, carry out local austenitizing as above.After austenitizing, blank P is sent in operated pressing tool by transport unit in step 105, and is pressed in step 106, for example presses and quenches.After quenching, can obtain to comprise the blank in the zone with different connection performances in operated pressing tool.
Reference numerals list
1 burner
2 heating units (austenitizing device)
3 filling devices
4 primary heater units
5 transport units
10 thermal forming devices
21 burner heads
22 burner heads
100 thermoforming process
101 punching presses
102 fillings
103 preheatings
104 austenitizings
105 transmit
106 compactings
211 hydrogen supply pipelines
212 oxygen supply lines
214 fuel oil atomizers
221 mixture supply lines
223 fuel oil atomizers
The P blank
Claims (18)
1. heating unit that is used for the equipment (10) of thermoforming blank (P), austenitizing device (2) particularly, wherein said heating unit is used for local heating is carried out in the zone of blank (P), austenitizing particularly, and described heating unit comprises at least one burner, it is characterized in that, be provided for burner and/or burner flame are moved to the device in the zone of carrying out local heating.
2. according to the heating unit of claim 1, it is characterized in that, described device for mobile burner and/or burner flame comprises automatic gear.
3. according to the described heating unit of claim 1 or 2, it is characterized in that, described burner is hydrogen-oxygen burner, fuel-oxygen burner or acetylene burner.
4. according to one of aforementioned claim described heating unit, it is characterized in that, described burner is premix burner.
5. according to one of aforementioned claim described heating unit (2), described heating unit is to be used in particular for the blank local heating to 750-1050 ℃, and particularly 800-1000 ℃ is for example the temperature of 850-950 ℃.
6. according to one of aforementioned claim described heating unit, it is characterized in that, described burner comprises 100-1000 nozzle.
7. according to one of aforementioned claim described heating unit, it is characterized in that, described burner comprises a plurality of nozzles, the diameter of wherein said nozzle is less than 2mm, preferably less than 1.5mm, be particularly preferably 0.5-1.3mm, and/or the distance between adjacent two nozzles is 1-4mm.
8. according to one of aforementioned claim described heating unit, it is characterized in that, the output rating of described heating unit is 50-500kW.
9. according to one of aforementioned claim described heating unit, it is characterized in that, described heating unit has shell.
10. according to heating unit claimed in claim 9, it is characterized in that, described shell has for extract the suction unit of waste gas out from shell.
11. be used for the equipment (10) of thermoforming blank (P), it comprises for the heating unit of local heating blank and is used for the pressing unit of the blank that moulding heated, it is characterized in that, described heating unit (2) is according to one of aforementioned claim described heating unit.
12. according to the described equipment of claim 11, it is characterized in that, the filling device (3) that provides at least one to be used for blank is loaded into equipment (10), and/or at least one is used for blank (P) is sent to the transport unit (5) of the pressing unit of equipment (10).
13. according to the described equipment of claim 11 or 12, it is characterized in that, at least one primary heater unit (4) be arranged on the upstream of described heating unit (2).
14. according to the described equipment of claim 13, wherein said at least one primary heater unit (4) comprises at least one chain-bucket stove.
15. according to the described equipment of claim 13 or 14, wherein said at least one primary heater unit (4) is used for blank is preheating to 450-850 ℃, particularly 600-800 ℃ is for example the temperature of 650-750 ℃.
16. according to the described equipment of one of claim 13-15, it is characterized in that, described primary heater unit comprises at least one pre-mixing hydrogen-oxygen burner or pre-mixed fuel-oxygen burner.
17. method (100) that is used for thermoforming blank (P), wherein at least one zone of blank (P) is locally heated, austenitizing particularly, and by compression moulding, it is characterized in that, biscuit area to be heated heats by at least one burner, and the flame of wherein said burner and/or burner is moved to biscuit area to be heated.
18. according to the described method of claim 17, it is characterized in that, the blank of coating is thermoformed, particularly the blank of coated with aluminum silicon or zinc is thermoformed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011120679.9 | 2011-12-08 | ||
| DE102011120679A DE102011120679A1 (en) | 2011-12-08 | 2011-12-08 | Plant and method for hot forming of blanks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103160657A true CN103160657A (en) | 2013-06-19 |
Family
ID=46045665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105990390A Pending CN103160657A (en) | 2011-12-08 | 2012-12-07 | Plant and method for hot forming blanks |
Country Status (7)
| Country | Link |
|---|---|
| KR (1) | KR20130064712A (en) |
| CN (1) | CN103160657A (en) |
| BR (1) | BR102012031262A2 (en) |
| CA (1) | CA2798258A1 (en) |
| DE (1) | DE102011120679A1 (en) |
| MY (1) | MY164125A (en) |
| TW (1) | TWI547564B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365604A (en) * | 2018-11-16 | 2019-02-22 | 苏州普热斯勒先进成型技术有限公司 | A kind of hot stamping method and the drop stamping production line using heating in vacuum |
| CN113166825A (en) * | 2018-11-29 | 2021-07-23 | 株式会社Posco | Local heat treatment system and cold forming method using the same |
| CN118455394A (en) * | 2024-07-15 | 2024-08-09 | 中机真空科技(济南)有限公司 | Multi-specification metal plate heating forming equipment and heating forming method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9181123B2 (en) | 2012-12-07 | 2015-11-10 | Linde Aktiengesellschaft | Thermal imaging to optimize flame polishing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325421A (en) * | 1998-05-08 | 1999-11-26 | Mitsubishi Heavy Ind Ltd | Premixing burner |
| JP2008105050A (en) * | 2006-10-25 | 2008-05-08 | Toshiba Corp | Method and apparatus for reducing residual stress |
| US20100132854A1 (en) * | 2006-10-03 | 2010-06-03 | Cola Jr Gary M | Microtreatment of Iron-Based Alloy, Apparatus and Method Therefor, and Articles Resulting Therefrom |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435162A (en) * | 1993-08-05 | 1995-07-25 | Caterpillar Inc. | Zone heating apparatus |
| DE102009042026A1 (en) * | 2009-09-17 | 2011-03-24 | Volkswagen Ag | Process for pretreating and providing a sheet metal part |
-
2011
- 2011-12-08 DE DE102011120679A patent/DE102011120679A1/en not_active Withdrawn
-
2012
- 2012-12-06 CA CA2798258A patent/CA2798258A1/en not_active Abandoned
- 2012-12-07 TW TW101146274A patent/TWI547564B/en not_active IP Right Cessation
- 2012-12-07 MY MYPI2012701103A patent/MY164125A/en unknown
- 2012-12-07 BR BR102012031262-0A patent/BR102012031262A2/en not_active IP Right Cessation
- 2012-12-07 CN CN2012105990390A patent/CN103160657A/en active Pending
- 2012-12-10 KR KR1020120142888A patent/KR20130064712A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325421A (en) * | 1998-05-08 | 1999-11-26 | Mitsubishi Heavy Ind Ltd | Premixing burner |
| US20100132854A1 (en) * | 2006-10-03 | 2010-06-03 | Cola Jr Gary M | Microtreatment of Iron-Based Alloy, Apparatus and Method Therefor, and Articles Resulting Therefrom |
| JP2008105050A (en) * | 2006-10-25 | 2008-05-08 | Toshiba Corp | Method and apparatus for reducing residual stress |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365604A (en) * | 2018-11-16 | 2019-02-22 | 苏州普热斯勒先进成型技术有限公司 | A kind of hot stamping method and the drop stamping production line using heating in vacuum |
| CN113166825A (en) * | 2018-11-29 | 2021-07-23 | 株式会社Posco | Local heat treatment system and cold forming method using the same |
| CN118455394A (en) * | 2024-07-15 | 2024-08-09 | 中机真空科技(济南)有限公司 | Multi-specification metal plate heating forming equipment and heating forming method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201335379A (en) | 2013-09-01 |
| KR20130064712A (en) | 2013-06-18 |
| BR102012031262A2 (en) | 2015-01-13 |
| MY164125A (en) | 2017-11-30 |
| DE102011120679A1 (en) | 2013-06-13 |
| CA2798258A1 (en) | 2013-06-08 |
| TWI547564B (en) | 2016-09-01 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130619 |
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| RJ01 | Rejection of invention patent application after publication |