CN208019292U - A kind of high strength steel hot forming gradient-heated device - Google Patents
A kind of high strength steel hot forming gradient-heated device Download PDFInfo
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- CN208019292U CN208019292U CN201820386533.1U CN201820386533U CN208019292U CN 208019292 U CN208019292 U CN 208019292U CN 201820386533 U CN201820386533 U CN 201820386533U CN 208019292 U CN208019292 U CN 208019292U
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Abstract
The utility model discloses a kind of high strength steel hot forming gradient-heated devices, including：Upper die holder；Pedestal is arranged in lower die holder thereon, and cooling block is arranged in portion on the base；Heat plate；Multiple traveling electrodes are fixed on the upper die holder lower part by pneumatic shuttle；Multiple fixed electrodes are fixed on the cooling block both sides；Heating device, setting are arranged in the upper die holder lower part between adjacent traveling electrode；Cooling water channel is arranged inside the cooling block；Wherein, by the energy transmitted after being powered to the traveling electrode and the fixed electrode the different zones of the heating plate are carried out with the heating of different temperatures；It can be cooled down to the heating plate by being passed through cooling water in the cooling water channel.
Description
Technical field
The utility model is related to high strength steel heating arts, and in particular to a kind of high strength steel hot forming gradient-heated dress
It sets.
Background technology
Auto industry is the pillar of Chinese national economy, and safety, low-carbon, environmental protection are that world today's development of automobile industry closes
The important topic of note, lightweight have been promoted to one of the target of numerous Automobile Enterprises, and how light-weighted simultaneously in realization
The safety for ensureing automobile is a weight difficult point.Research shows that the intensity of steel reaches 780MPa ranks, then it can be with homogenous quantities high price
Almag of position etc. has identical characteristic, and steel economically has apparent advantage at this time.Therefore, exploitation 780MPa is with higher level
Not, the excellent high-strength steel sheet of properties will be as the important channel of this target of realization lightweight.Existing high-strength steel heat
Forming technique can obtain the product of very high intensity, but plasticity is relatively low, relatively low, modeling which results in the elongations of high-strength steel
The poor disadvantage of property, and one of performance requirement of car body component seeks to enough energy absorption abilities, to ensure colliding
When ensure personnel safety in crew module to greatest extent.So rational structural strength distribution can improve the deformation tendency of part
And energy absorption characteristics, meet the performance requirement of car body component.In conclusion product of the research and development with gradient-structure performance is particularly heavy
It wants, such as：Design automobile body B column reinforcement plate should make that the first half strength of materials is high, plasticity is low, and deformation should be compared with when by side collision
It is small, protect member's significant points not to be hit safely；The lower half strength of materials is low, plasticity is high, first becomes when being collided
Impact force is quickly transmitted to connected sill strip, and then largely absorbs collision energy by shape.
In order to produce the component for having such performance, traditional method has welding plate technique, by different structure performance
Steel plate welds together, but the formability of this technology is limited by weld seam, when especially the steel plate of different-thickness welds, difficulty
Greatly, the complexity of product is also significantly limited, and in order to weld the coating for needing to remove steel surface so that steel
When heating oxidizable problem can occur for material；Also a kind of rolling plate technique, by controlling roll ruler in System on Rolling Steel
It is very little to achieve the purpose that control panel thickness, but mold design difficulty is very big, and since stock layout constrains, utilization rate is relatively low；In addition
It is the product of formation of martensite to be subjected to part post-processing tempering, but undoubtedly increase in this way one is post-processing tempering process
Working hour, and the corresponding increase of operation difficulty are added.Emerging method has Local cooling method, i.e., is carried out not in product austenitizing
With the cooling of cooling rate, the part of different phase compositions is obtained, as shown in Figure 1, needing to accurately control different parts in cooling procedure
It is required that cooling rate, it is while relatively low in the higher position cooling rate of plasticity requirements so that the production cycle is long, this and modern industry
The efficient principle emphasized is inconsistent.
As shown in Fig. 2, the process of austenitizing when high-strength steel heating is indicated, if control product different parts are not respectively with
Same heating condition is heated to different temperatures, it is desirable that the high position of the soft plasticity of matter is heated to the temperature of ferrite and pearlite mixing
Degree, it is desirable that the low position of intensity high-ductility is heated to the temperature of austenite, is then carried out at the same time cooling again, then can be in different portions
Position obtains different mechanical performances.Therefore, realizing that the above needs to design a set of can accurately control the high-strength of heating temperature
Steel ladder degree heating device.
Utility model content
The utility model has designed and developed a kind of high strength steel hot forming gradient-heated device, and the practicality of the utility model is new
The purpose of type be make heating plate region can arbitrary heat stepwise, electrified regulation, resistance heating and cooling water cooling pair can be passed through
Heating plate is processed molding.
Technical solution provided by the utility model is：
A kind of high strength steel hot forming gradient-heated device, including：
Upper die holder；
Pedestal is arranged in lower die holder thereon, and cooling block is arranged in portion on the base；
Heat plate；
Multiple traveling electrodes are fixed on the upper die holder lower part by pneumatic shuttle；
Multiple fixed electrodes are fixed on the cooling block both sides；
Heating device, setting are arranged in the upper die holder lower part between adjacent traveling electrode；
Cooling water channel is arranged inside the cooling block；
Wherein, by the energy to being transmitted after the traveling electrode and the fixed electrode energization to the heating plate
Different zones carry out the heating of different temperatures；By be passed through in the cooling water channel cooling water can to the heating plate into
Row cooling.
Preferably, further include：Guide sleeve is arranged in the upper die holder lower part；And
Portion on the lower die holder is arranged in guide post, is coaxially disposed with the guide sleeve；
Wherein, the guide post can move up and down in the guide sleeve relative to the guide sleeve.
Preferably, the heating device further includes：
Heated base is arranged in the lower face of the upper die holder；
Heat-insulating shield cover is fixed on the heated base, and the uncovered structure that the heat-insulating shield cover is inner hollow；
Induction coil is arranged inside the uncovered structure；
Upper heat-conducting plate is arranged in the inside of the heat-insulating shield cover, and the lower part of the induction coil can receive and transmit
The heat that the induction coil transmits after being powered, heats the heating plate；
Lower heat-conducting plate is arranged on the cooling block top.
Preferably, the traveling electrode is set as 4, including：First movement electrode, the second traveling electrode, third are moved
Moving electrode and the 4th traveling electrode, and the heating device is arranged in second traveling electrode and the third traveling electrode
Between；And
The heating region of the heating plate is divided into first area, second area and third region；
Wherein, by can add to the first area to the first movement electrode and second traveling electrode energization
Heat；
By can be heated to the third region to the third traveling electrode and the 4th traveling electrode energization；
And/or
The second area is heated by the heating device.
Preferably, the fixed electrode is set as 2, including：First, which fixes electrode and second, fixes electrode；
It wherein, can be to the heating plate by fixing electrode energization to the first fixation electrode and described second
Whole region heats.
Preferably, further include：
Electrode supporting plate, setting is on the lower die holder；
Insulation board is screwed onto the top of the electrode supporting plate, and described first, which fixes electrode and described second, fixes electricity
Pole is fixed on the insulation board.
Preferably, further include：Positioning pin is arranged on the pedestal, for the positioning to the heating plate.
Preferably, the upper heat-conducting plate and the lower heat-conducting plate are all made of red copper material.
Preferably, the pneumatic shuttle includes cylinder barrel and piston rod.
Preferably, the guide sleeve is welded on the upper die holder；And
The guide post welding is on the lower die holder.
The utility model compared with prior art possessed by advantageous effect：
1, high strength steel hot forming gradient-heated device described in the utility model realizes same plate in different machineries
Good linking between each position of performance；The utility model combines different heating mode, and heating temperature is arbitrarily adjustable, makes different positions
It sets and generates different heats, the conversion that phase is connected between high-temperature region and low-temperature space is more smooth, is not in conventional soldering techniques
The discontinuous problem caused by the reasons such as weld seam or plate thickness；
2, high strength steel hot forming gradient-heated device productivity described in the utility model is high；The utility model is broken
The limitation for having technology is handled in the heat steel stage, and the position of different performance requirement is made to be heated separately to different temperatures, behaviour
Make simply, not needing additional device, the cost put on manpower financial capacity is reduced compared to traditional technology, shortens production week
Phase improves production efficiency；
3, high strength steel hot forming gradient-heated unit temp control described in the utility model is accurate, and energy consumption is relatively low；Such as
Shown in Fig. 4, the utility model heats combined mode of heating using resistance heating and heat transfer, and each heating part temperature is all
Controllable precise, it can be achieved that three kinds of different plates phase constituent distribution situation, and also decrease compared to traditional technology energy consumption,
Avoid the waste of the energy, more low-carbon environment-friendly；
4, high strength steel hot forming gradient-heated device described in the utility model can flexibly realize plate heating temperature
A variety of distribution modes, it is applied widely；The utility model breaks traditional resistor piecemeal heating (as shown in Figure 3) and only considers individually electricity
The limitation in source overcomes the drawback that middle section cannot heat and both ends heating temperature must be consistent, uses dual power supply completion pair
The water conservancy diversion of electric current, so realize respectively to different piece heat, as shown in figure 4, again by and heat transfer mode of heating combination,
Various temperature distributed combination can be realized by controlling the voltage of resistance heating and heat transfer heating respectively, flexible and changeable, can be met each
The test specimen of kind performance requirement, has wide range of applications；
5, high strength steel hot forming gradient-heated device described in the utility model can realize mass production, and product matter
Amount is higher；The utility model devises three independent heating modules, all has the very high efficiency of heating surface, can control heating heat
The accurate utilization of amount, so product quality is higher, and present apparatus application procedures are simple, can be applicable to many aspects, can be competent at
Produce in enormous quantities；
6, high-strength hot forming steel gradient-heated device volume described in the utility model is small, and floor space is small；This practicality
The device of new design does not need prodigious installation dimension, and device area adapts to area of sheet metal, compared with traditional roller bottom stove
Equal heating devices floor space is much smaller and small, applied widely；
7, it is hot formed most to consider high strength steel for high-strength hot forming steel gradient-heated device described in the utility model
Good forming temperature；Heating device described in the utility model is in carrying out heating process, when the part plate for needing high-intensity performance
After material is heated to austenitizing temperature, voltage is constantly controlled, so that it is kept heated at constant temperature by thermocouple temperature measurement, when this part plate
After expecting complete austenitizing, electric current is cut off, cooling water stream is passed through in bottom coohng water channel and is quickly cooled down, allowed to cool to
650 DEG C or so, the hardenability value value highest of material at this time, and in this temperature range plate formability it is best；For not needing
The part plate of high-intensity performance makes it be heated to 720 DEG C of following temperature, by thermocouple temperature measurement and controls voltage and makes its holding
Heated at constant temperature keeps the mixed phase of ferrite and pearlite, and plate not only suitable for forming but also meets intensity requirement at this time, later
Plate is placed on hot-forming die, forming process is completed and can be obtained required hot forming product.
Description of the drawings
Fig. 1 is material continuous cooling transformation curve graph.
Fig. 2 is material laser heating transformation curve figure.
Fig. 3 is traditional single supply resistance heating schematic diagram.
Fig. 4 is the principle of heating figure of utility model device.
Fig. 5 is the sectional view of utility model device heat transfer heating part.
Fig. 6 is the superstructure figure in high strength steel hot forming gradient-heated device described in the utility model.
Fig. 7 is the lower junction composition in high strength steel hot forming gradient-heated device described in the utility model.
Fig. 8 is that the thermocouple in high strength steel hot forming gradient-heated device described in the utility model divides on heat-conducting plate
The schematic diagram of cloth position.
Fig. 9 can be placed for separation above and below high strength steel hot forming gradient-heated device described in the utility model and withdrawing plate
Structure chart when material.
Figure 10 is structure chart when high strength steel hot forming gradient-heated device described in the utility model molds up and down.
Figure 11 is the plate figure of high strength steel hot forming gradient-heated device described in the utility model.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art with reference to explanation
Book word can be implemented according to this.
High strength steel hot forming gradient-heated device described in the utility model include external control device, upper module,
Lower module, resistive heating device, heat transfer heating device, dynamical system.
As shown in Figure 5, Figure 6, upper mechanism includes upper die holder 100, upper mold seat supports guide sleeve 110, first movement electrode
310, the second traveling electrode 320, third traveling electrode 330, the 4th traveling electrode 340, piston rod 120, cylinder barrel 121, heat biography
Lead heated base 130, heat transfer heat-insulating shield cover 131, heating coil 132, upper heat-conducting plate 133.
By first movement electrode 310, the second traveling electrode 320, third traveling electrode 330, the 4th traveling electrode 340 will
The heating region of heating plate 500 is divided into first area, second area and third region；Wherein, by first movement electrode
310 and second the energization of traveling electrode 320 first area can heat, by electric to the movement of third traveling electrode 330 and the 4th
Pole 340 is powered and can be heated to third region, can be heated to second area by heat transfer heating device.
As shown in Figure 7, Figure 8, lower mechanisms include 200 lower die holders, lower die holder supporting cell guide 210, electrode supporting plate
220, insulation board 221, second fixes electrode 420, positioning pin 240, heating plate 500, cooling lower heat-conducting plate 233, cooling block
231, cooling water channel 232, lower base 230, first fix electrode 410, fixing bolt 250, temperature thermocouple 234.
500 whole region of plate can be carried out whole add by fixing the fixation of electrode 410 and second electrode 420 by first
Heat.
Such as Fig. 6, upper die holder 100 is rectangular hollow box structure, hydraulic pressure of the inside equipped with control traveling electrode
Dynamical system is connected using welding manner between quadrangle and guide sleeve 110, and is connected with external control system, and whole system is controlled
Upper and lower disengaging movement.100 bottom surface of upper die holder is provided with the hole to match with cylinder barrel shape, is fixed in 4 cylinder barrel upper end load holes
Connection, 4 piston rods are fitted into cylinder barrel as the coordination electrode up and down motion that is slidably connected；Heat transfer heated base 130 and upper die holder
100 and heat-insulating shield cover 131 be respectively fixedly connected with.
As shown in fig. 7,200 4 jiaos of lower die holder is connected between guide post 210 using welding manner, electrode supporting plate 220, bottom
It is fixedly connected between seat 230 and lower die holder 200, insulation board 221 is fastened on both sides electrode supporting plate 220 using bolt 250
On, the second fixation electrode 420 and first is fixed electrode 410 and is embedded in respectively on both sides insulation board 221, lower heat-conducting plate 233, cooling
Block 231 is fixedly connected with pedestal 230, and cooling water channel 232 is located in 231 cooling blocks, and cooling water flows through supercooling water channel 232 can be with
Circulation, positioning pin 240 are small cylinder formula structural member, are inserted into the dowel hole of cooling lower heat-conducting plate 233, upper surface is high
Go out to heat 500 surface 3-5mm of plate, for the positioning to high strength steel plate 500.
As shown in figure 5, it is the box part of thickness 5mm that heat-insulating shield cover 131, which uses heat-barrier material, structure,；Upper heat-conducting plate 133 uses
It is easy to the red copper material of direct conduction heating, structure is the plate structure part of 10mm thickness, is used with inner wall before and after heat-insulating shield cover 131
Interference fit, width are bigger 3-5mm than plate so that upper heat-conducting plate 133 can cover heating plate；Heat-insulating shield cover 131 and heating plate
Between load coil 132 is installed, heat is finally directly transferred to plate by heat source of the load coil 132 as heating plate
On material 500；Wherein heat-insulating shield cover 131 is fixedly connected with heated base 130.
It, can be to the of heating plate 500 as shown in figure 8, multiple temperature thermocouples 234 are arranged on lower heat-conducting plate 233
One region, second area and third region carry out test temperature, and temperature is arranged on the water outlet of the cooling water channel 232
Sensor.
As shown in Figure 9, Figure 10, it controls upper module by external control system to detach with lower module such as Fig. 9, plate is put
Module is returned to molding state such as Figure 10 up and down after setting, at this time four cylinder barrels by piston rod by electrode 310,320,330,
340 are pressed on plate 500, and then make plate and electrode reliable contacts, ensure electric current conduction, the upper heat conduction of heat transfer heating device
Plate 133 and lower heat-conducting plate 233 are also in close contact with plate.
Embodiment 1
The course of work of high strength steel hot forming area heating installation described in the utility model：
Refering to fig. 11, use dimensions for high-strength steel sheet that the material of 2000mm × 800mm × 1.5mm is 22MnB5
Material is used as operation object, and three regions are blocked into length direction.
Steps are as follows：
1. being 22MnB5's using the material that one block specifications size of cutting machine well cutting is 2000mm × 800mm × 1.5mm
High strength steel plate 500；
2. control system controls upper module by guide sleeve guide post and is moved to dominant bit upwards with the speed of 0.2m/s together
Set stopping；
3. the high strength steel plate of well cutting is placed on the surface of lower heat-conducting plate 233 using mechanical device, and utilize
Positioning pin 240 positions high strength steel plate 500；
4. control system control upper module is moved down into heat-insulating shield cover 131 and is in contact with heating plate 500, and subsequent four
A cylinder barrel makes four electrodes be moved downward to compress plate, make plate 500 and four electrode reliable contacts by piston rod；
5. by control system to heat transfer heated mould induction coil 132 in the block and the electrode of resistance heating module
It is separately energized, three sections of plates can be precisely controlled in same a period of time by the method for controlling power-on voltage and cooling flow rate of water flow
It carves the heating temperature for reaching different and is in best shaped state；As shown in figure 11, in the present embodiment, plate 500 is heated
First area A, second area B, third region C performance requirements are different, it is desirable that high intensity inductile region can be heated to austenite
After changing temperature (900 DEG C), the real time temperature monitoring and voltage of plate are adjusted by thermocouple 234 and keep constant temperature, keeps its complete
Then full austenite controls cooling block 231, the cooling water channel 232 of this corresponding region plate lower part is opened, to being heated to 900
DEG C region be quickly cooled down, by the cooling water flow velocity in the corresponding cooling water channel of adjusting 232, its temperature is made to be reduced to 650
℃；It is below to austenitizing temperature to requiring low-intensity high-ductility region electrified regulation while opening cooling water channel 232
Temperature simultaneously makes it maintain original ferrite and pearlite mixed phase in the process can be by temperature thermocouple to the reality of temperature
When monitor and adjusting voltage makes it reach 650 DEG C of temperature simultaneously with high intensity inductile region.In this, the temperature of entire plate is all
Reach 650 ± 10 DEG C；
6. control system control upper module is moved upwards with the speed of 0.2m/s, it is moved into maximum position；
7. being taken out the good plate of heated piecemeal using mechanical device, it is transferred to the next step, then uses tradition
Hot-forming die forming cooling, you can obtain the different hot forming part of three sections of required intensity；
8. home position is returned by all mechanisms of device, cut off the power.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (10)
1. a kind of high strength steel hot forming gradient-heated device, which is characterized in that including：
Upper die holder；
Pedestal is arranged in lower die holder thereon, and cooling block is arranged in portion on the base；
Heat plate；
Multiple traveling electrodes are fixed on the upper die holder lower part by pneumatic shuttle；
Multiple fixed electrodes are fixed on the cooling block both sides；
Heating device, setting are arranged in the upper die holder lower part between adjacent traveling electrode；
Cooling water channel is arranged inside the cooling block；
Wherein, by the energy to being transmitted after the traveling electrode and the fixed electrode energization to the difference of the heating plate
Region carries out the heating of different temperatures；The heating plate can be dropped by being passed through cooling water in the cooling water channel
Temperature.
2. high strength steel hot forming gradient-heated device as described in claim 1, which is characterized in that further include：Guide sleeve is set
It sets in the upper die holder lower part；And
Portion on the lower die holder is arranged in guide post, is coaxially disposed with the guide sleeve；
Wherein, the guide post can move up and down in the guide sleeve relative to the guide sleeve.
3. high strength steel hot forming gradient-heated device as claimed in claim 1 or 2, which is characterized in that the heating device
Further include：
Heated base is arranged in the lower face of the upper die holder；
Heat-insulating shield cover is fixed on the heated base, and the uncovered structure that the heat-insulating shield cover is inner hollow；
Induction coil is arranged inside the uncovered structure；
Upper heat-conducting plate is arranged in the inside of the heat-insulating shield cover, the lower part of the induction coil, can receive and transmit described
The heat that induction coil transmits after being powered, heats the heating plate；
Lower heat-conducting plate is arranged on the cooling block top.
4. high strength steel hot forming gradient-heated device as claimed in claim 3, which is characterized in that the traveling electrode setting
It is 4, including：First movement electrode, the second traveling electrode, third traveling electrode and the 4th traveling electrode, and the heating
Device is arranged between second traveling electrode and the third traveling electrode；And
The heating region of the heating plate is divided into first area, second area and third region；
Wherein, by can be heated to the first area to the first movement electrode and second traveling electrode energization；
By can be heated to the third region to the third traveling electrode and the 4th traveling electrode energization；And/or
The second area is heated by the heating device.
5. high strength steel hot forming gradient-heated device as claimed in claim 4, which is characterized in that the fixed electrode setting
It is 2, including：First, which fixes electrode and second, fixes electrode；
Wherein, the entire of plate can be heated to described by fixing electrode and the second fixation electrode energization to described first
It heats in region.
6. high strength steel hot forming gradient-heated device as claimed in claim 5, which is characterized in that further include：
Electrode supporting plate, setting is on the lower die holder；
Insulation board is screwed onto the top of the electrode supporting plate, and it is solid that the first fixation electrode and described second fix electrode
It is scheduled on the insulation board.
7. high strength steel hot forming gradient-heated device as claimed in claim 6, which is characterized in that further include：Positioning pin,
It is arranged on the pedestal, for the positioning to the heating plate.
8. high strength steel hot forming gradient-heated device as claimed in claim 7, which is characterized in that the upper heat-conducting plate and institute
It states lower heat-conducting plate and is all made of red copper material.
9. the high strength steel hot forming gradient-heated device as described in any one of claim 1,2,4-8, which is characterized in that institute
It includes cylinder barrel and piston rod to state pneumatic shuttle.
10. high strength steel hot forming gradient-heated device as claimed in claim 2, which is characterized in that the guide sleeve is welded on
On the upper die holder；And
The guide post welding is on the lower die holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386533.1U CN208019292U (en) | 2018-03-21 | 2018-03-21 | A kind of high strength steel hot forming gradient-heated device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386533.1U CN208019292U (en) | 2018-03-21 | 2018-03-21 | A kind of high strength steel hot forming gradient-heated device |
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| Publication Number | Publication Date |
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| CN208019292U true CN208019292U (en) | 2018-10-30 |
Family
ID=63907020
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| CN201820386533.1U Expired - Fee Related CN208019292U (en) | 2018-03-21 | 2018-03-21 | A kind of high strength steel hot forming gradient-heated device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246896A (en) * | 2018-03-21 | 2018-07-06 | 吉林大学 | A kind of high strength steel hot forming gradient-heated device and its heating means |
| CN113290150A (en) * | 2021-04-30 | 2021-08-24 | 合肥合锻智能制造股份有限公司 | Detachable temperature-controllable hot-pressing combined die |
-
2018
- 2018-03-21 CN CN201820386533.1U patent/CN208019292U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246896A (en) * | 2018-03-21 | 2018-07-06 | 吉林大学 | A kind of high strength steel hot forming gradient-heated device and its heating means |
| CN113290150A (en) * | 2021-04-30 | 2021-08-24 | 合肥合锻智能制造股份有限公司 | Detachable temperature-controllable hot-pressing combined die |
| CN113290150B (en) * | 2021-04-30 | 2024-03-15 | 合肥合锻智能制造股份有限公司 | Detachable temperature-controllable hot-pressing combined die |
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