CN201553762U - Heat treatment splicing device used before ultra-high strength steel plate pressing - Google Patents
Heat treatment splicing device used before ultra-high strength steel plate pressing Download PDFInfo
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- CN201553762U CN201553762U CN2009202977754U CN200920297775U CN201553762U CN 201553762 U CN201553762 U CN 201553762U CN 2009202977754 U CN2009202977754 U CN 2009202977754U CN 200920297775 U CN200920297775 U CN 200920297775U CN 201553762 U CN201553762 U CN 201553762U
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Abstract
The utility model provides a heat treatment splicing device used before ultra-high strength steel plate pressing, which comprises an upper portion and a lower portion with corresponding structures, each portion at least comprises one of a water spray cooling module, a cooling water copper module, a cooling water steel module, a copper module, a steel module, a gas cooling module, an air cooling module and a heat insulating annealing module, and all the modules are arranged tightly. A splicing plate with different properties at different positions can be generated by utilizing different areas of the same forming plate with different mechanical properties and then is in part forming by aid of pressing dies, thereby overcoming the shortage that hot pressed parts are high in strength but weak in energy absorption, producing plates without welding seams but having uniform transiting performance, realizing simple equipment and low input, not only reducing scrap rate of components but reducing peripheral reinforcement parts, simplifying assembling steps and processes and increasing press forming rate.
Description
Technical field
The utility model relates to the thermal treatment units of high strength pressed sheet material before punching press such as high-strength steel, AHSS, ultrahigh-strength steel, belongs to thermal treatment and sheet forming technical field.
Background technology
Raising along with steel strength, the unit elongation of material and forming property also reduce greatly, be easy to generate in the forming process break, wrinkling, size is difficult to problems such as control and shape defect, traditional cold punching forming process can not satisfy the needs of technology and production development.For this reason, various countries scholar and each big motor corporation turn to focus the application of new material new process when optimizing automobile frame and structure.At present, forming technology for ultrahigh-strength steel plates has two kinds, the one, quenching technology in hot stamping and the mould, this technology is that hardenable boron steel plate is heated to austenitizing temperature (900～950 ℃) in process furnace, and keeps 5 minutes in the austenitic area, then plate is transferred to pressing machine, in press tool, carry out drawing and quenching simultaneously, make formation of parts obtain 100% martensitic stucture, this technology can make plate bring into play its best performance, for automobile provides high-quality component; Another kind is the laser assembly solder plate technique, this technology is for the shaping of satisfying high-strength plate and service requirements, characteristics according to drip molding, cut blank down from the steel plate of different intensity and thickness, utilize laser welding technology then, these blanks are welded together, form with cold punching die, this technology makes manufacturers can reduce the weight of automobile structure when improving collision performance and fatigue strength.
For quenching technology in hot stamping and the mould, need many specific equipments: high speed machine hand and clamper that (1) can clamping formation of parts (about 200 ℃ of temperature); (2) possess the pressing machine of matched moulds punching press and pressure holding function, pressing machine must be taken into account the advantage that passes logical hydropress and mechanical press; (3) side cut of formation of parts and cut hole technology, because part strength is very high, the main at present method that adopts a line to be equipped with many laser cutting machines.This technology infusion of financial resources is very big, and in addition, the hot stamping part only has high strength, but does not have the energy absorption capacity of car safety part requirement.
The defective that also has it to overcome for the laser assembly solder plate technique.The one, there is weld seam in the welding plate, and weld seam can influence part forming performance in the performance of material and the stamping process; The 2nd, the transition of splice plate material property is violent, owing to be that material with varying strength or different thickness welds together, causes material property to be undergone mutation in splicing place; The 3rd, need special-purpose welding laser and the Optical devices supporting with it, welding equipment costs an arm and a leg.
Also have from the component of material itself and change the bending machining of superstrength and weathering resistance, as CN1297681C disclosed " the weathering resistance high tensile steel plate and the manufacture method thereof of has excellent bending properties ", provide and guarantee that yield strength is 700MPa or above superstrength, bending machining that waits behind the while ability shot-peening and steel plate and the manufacture method thereof that possesses weathering resistance, this steel plate contains C:0.05～0.15% in quality %, Si:0.5% or following, Mn:0.5～2.0%, P:0.02 or following, S:0.005% or following, Ni:0.2～2.0%, Cu:0.2～0.5%, Cr:0.2～1.0%, and contain Ti:0.03～0.2%, Nb:0.01～0.07%, V:0.01～0.07%, among B:0.0005～0.0050% a kind, 2 kinds or more than, surplus is Fe and unavoidable impurities.But this has increased the manufacture difficulty of material itself again.
Summary of the invention
(specific equipment that quenching technology exists in hot stamping and the mould is valuable for the deficiency that the utility model exists at the forming technique that has ultrahigh-strength steel plates now, investment is big, formation of parts has only high strength not have defectives such as energy absorption capacity, and the weld seam of the welding plate of laser assembly solder technology existence influences the performance and the forming property of material, the transition of splice plate material property is violent, need special-purpose welding laser and the Optical devices supporting with it, defectives such as welding equipment costs an arm and a leg), provide a kind of different zones of same shaping plate that can make to have different mechanical propertys, obtain the thermal treatment splicing device before the ultrahigh-strength steel plates punching press of the thermal treatment amalgamation plate that performance everywhere there are differences.
Thermal treatment splicing device before the ultrahigh-strength steel plates punching press of the present utility model is by the following technical solutions:
This device comprises forms the corresponding two portions of structure up and down, each part comprises a kind of module in water smoke refrigerating module, water coolant copper mold piece, water coolant steel moald-cavity, copper mold piece, steel moald-cavity, air cooling module, air cooling module and the insulation annealing module at least, and each module closely is arranged in together.
The water smoke refrigerating module comprises Sheet Steel Form and shower nozzle, is provided with cooling-water duct on Sheet Steel Form, and the entrance of cooling water joint is installed on the passage, and waterfog head is installed on Sheet Steel Form, the equal and channel connection of each shower nozzle.A water-in and a plurality of waterfog head are set in the water smoke refrigerating module, and the water-in joint connects water equipment, waterfog head to hardenable ultrahigh-strength steel plates (as boron plate) thus atomized water spray cools off fast to plate, reach the purpose of partial heat treatment.
The air cooling module is the same with the structure of water smoke refrigerating module, comprises Sheet Steel Form and shower nozzle, is provided with the passage of high pressure gas on Sheet Steel Form, and the high pressure gas inlet union is installed on the passage, and the high pressure gas shower nozzle is installed on Sheet Steel Form, the equal and channel connection of each shower nozzle.Be used for refrigerative gas and can be high pressure rare gas elementes such as high-pressure air or nitrogen, argon gas, helium, air inlet connections and high-pressure air source link together, by the high pressure gas shower nozzle high pressure gas are sprayed to hardenable superstrength punching press plate (as boron plate) thus the surface hardenable plate is cooled off, reach the purpose of partial heat treatment.
The water coolant steel moald-cavity comprises Sheet Steel Form, is provided with cooling water channel in the Sheet Steel Form, and cooling water channel is provided with water-in and water outlet.
Water coolant copper mold piece is the same with the structure of water coolant steel moald-cavity, comprises the copper mold plate, is provided with cooling water channel in the copper mold plate, and cooling water channel is provided with water-in and water outlet.
The insulation annealing module is that framework is provided with lagging material.Make the part of superstrength punching press plate reach insulation slow annealed thermal treatment purpose down by this module.
The copper mold piece is exactly a rectangular parallelepiped copper billet, selects suitable dimension according to the size in zone to be processed.
Steel moald-cavity is exactly a rectangular parallelepiped bloom, selects suitable dimension according to the size in zone to be processed.
The air cooling module makes the sheet material part carry out air cooling exactly, according to the size and the position setting in handle zone, is the module of a void.If the air cooling module connects two entity module by web member, keep the suitable spacing of 30mm ~ 50mm between the plate that web member and needs are handled between other two entity module.
Above-mentioned each module is followed successively by the water smoke refrigerating module from fast to slow to the speed of cooling that is heated to the sheet material after proper temperature also is incubated, water coolant copper mold piece, the water coolant steel moald-cavity, the copper mold piece, steel moald-cavity, air cooling module and insulation annealing module, the air cooling module is along with the ventilation source category, pressure, the difference of temperature, resulting material property is also inequality, the pressure in the source of ventilating is big more, temperature is low more, make the speed of cooling of sheet material fast more, the intensity of resulting material and hardness are high more, speed of cooling by these module controls sheet material different zones reaches the purpose that the sheet material different zones has different mechanical propertys.
For different ultrahigh-strength steel panel materials, to carry out cooling heat by above-mentioned different module and handle, performances such as the plate tensile strength that obtains, hardness can draw by experiment.
The utility model makes the different zones of same shaping plate have different mechanical propertys, obtain the amalgamation plate that performance everywhere there are differences, and then utilize cold punching die to carry out part forming, having overcome the hot stamping part has only high strength not have the shortcoming of energy absorption capacity, there is not weld seam in plate, the performance transition of material is even, and equipment is simple, less investment.Not only can reduce the parts scrap rate, and can reduce periphery reinforced part quantity, simplify installation step and technology, the impact briquetting rate improves; Because formation of parts has high strength and energy absorption capacity, the vehicle collision ability of application is strengthened simultaneously.
Description of drawings
Fig. 1 is the water smoke refrigerating module in the utility model or the structural representation of air cooling module.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the water coolant copper mold piece in the utility model and the structural representation of water coolant steel moald-cavity.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of the insulation annealing module in the utility model.
Fig. 6 is the synoptic diagram of the air cooling module in the utility model.
Fig. 7 is a kind of synoptic diagram of U-shaped bool.
Fig. 8 carries out the partial heat treatment schematic representation of apparatus to U-shaped bool shaping plate shown in Figure 7.
Fig. 9 is a kind of synoptic diagram of hat bool.
Figure 10 carries out the partial heat treatment schematic representation of apparatus to hat bool shaping plate shown in Figure 9.
Wherein: 1, Sheet Steel Form, 2, passage, 3, plug, 4, shower nozzle, 5, joint, 6, water-in, 7, water outlet, 8, copper mold plate or Sheet Steel Form, 9, cooling water channel, 10, connect water pipe, 11, lagging material, 12, framework, 13, sheet material, 14, contiguous block, 15, straight wall zone, 16, radius area, 17, the bottom, 18, water coolant copper mold piece, 19, insulation annealing module, 20, flange, 21, the air cooling module.
Embodiment
The water smoke refrigerating module in the utility model or the structure of air cooling module comprise Sheet Steel Form 1 and shower nozzle 4 as depicted in figs. 1 and 2, are provided with the passage 2 of water coolant or high pressure gas on Sheet Steel Form 1, and the two ends of passage 2 block by plug 3.The shower nozzle 4 of some water smokes or high pressure gas is installed on Sheet Steel Form 1, and each shower nozzle 4 all is communicated with passage 2, and shower nozzle 4 is provided with many spray orifices.Joint 5 by entrance of cooling water or high pressure gas import feeds water coolant or high pressure gas in the passage 2 of cooling water channel or high pressure gas, spray to superstrength punching press plate by waterfog head or high pressure gas shower nozzle 4 again.
Used cooling gas can be high pressure rare gas elementes such as high-pressure air or nitrogen, argon gas, helium during the air cooling module was provided with, inlet mouth and high-pressure air source link together, thereby by the high pressure gas shower nozzle high pressure gas are sprayed to hardenable boron plate surface hardenable boron plate are cooled off.
The structure of water coolant copper mold piece and water coolant steel moald-cavity comprises in copper mold plate or the Sheet Steel Form 8 being provided with cooling water channel 9 that cooling water channel 9 connects by connecting water pipe 10 as shown in Figure 3 and Figure 4.Water coolant enters cooling water channel 9 by water-in 6, discharges cooling water channel 9 by water outlet 7.For the temperature that guarantees the module surface is even as far as possible, a plurality of water-ins and a plurality of water outlet are set in each module, water-in and water equipment link together, and water outlet and water coolant recovery system link together.
The structure of insulation annealing module is that framework 12 is provided with lagging material 11 as shown in Figure 5.
Copper mold piece or steel moald-cavity are exactly a rectangular parallelepiped copper billet or bloom, select suitable dimension according to the size in zone to be processed.
Fig. 6 has provided the synoptic diagram of air cooling module.The air cooling module makes the sheet material part carry out air cooling exactly, according to the size and the position setting in handle zone, is the module of a void.To link together by contiguous block 14 in the water smoke refrigerating module and the insulation annealing module of carrying out both sides, air cooling zone, the neutral between water smoke refrigerating module and the insulation annealing module is the air cooling module.The suitable spacing that keeps 30mm ~ 50mm between contiguous block 14 and the sheet material 13 is to reach the purpose of sheet material being carried out air cooling.
Above-mentioned water smoke refrigerating module, air cooling module, water coolant copper mold piece, water coolant steel moald-cavity, insulation annealing module, copper mold piece, steel moald-cavity and air cooling module can link together by the contiguous block arbitrary combination according to concrete technology, become thermal treatment unit.
Hardenable boron plate is heated to 900 ℃, and be incubated to complete austenitizing, utilize above-mentioned different module to carry out cooling heat and handle, the plate performance that obtains is as follows: water fog cooling module is heat-treated the tensile strength 1550～1750MPa of back material, Rockwell hardness 43～48HRC; Heat-treat the tensile strength 1400～1500MPa of material afterwards, Rockwell hardness 41～45HRC with water coolant copper mold piece; Heat-treat the tensile strength 1350～1400MPa of material afterwards, Rockwell hardness 39～41HRC with the water coolant steel moald-cavity; Heat-treat the tensile strength 1200～1350MPa of material afterwards, Rockwell hardness 33～38HRC with the copper mold piece; Heat-treat the tensile strength 900～1250MPa of material afterwards, Rockwell hardness 30～35HRC with steel moald-cavity; Heat-treat the tensile strength 600～1350MPa of material afterwards, Rockwell hardness 25～40HRC with the air cooling module; Heat-treat the tensile strength 400～600MPa of back material with the air cooling module; Heat-treat the tensile strength 250～400MPa of back material with the insulation annealing module.
For the ultrahigh-strength steel plates of other material, performances such as the plate tensile strength of being undertaken obtaining after cooling heat is handled by different modules, hardness can draw by experiment, can carry out combined modules according to the data that obtain.
For U-shaped bool shown in Figure 7, according to its shaping characteristic, the sheet material blank can be divided into five zones: two straight wall zones 15, bottom 17 and two radius area 16, because part is in forming process, just fillet part divides the generation viscous deformation, and other parts do not produce viscous deformation, for high strength and the plasticity that guarantees part, by its shaping blank of partial heat treatment technology amalgamation the time, use water coolant copper mold piece to cool off to two straight wall zones 15 and bottom 17, for two radius area 16, adopt the insulation annealing module.
The device that U-shaped bool shaping plate shown in Figure 7 is carried out partial heat treatment as shown in Figure 8.This device is made up of two portions up and down, the two-part structure composition is identical up and down, two portions all are made up of three water coolant copper mold pieces 18 and two insulation annealing modules 19 up and down, the ultrahigh-strength steel sheet material 13 after heating and the complete austenitizing are clipped in upper and lower two portions of partial heat treatment device shown in Figure 8.After with device shown in Figure 8 steel plate being carried out partial heat treatment, sheet material blank part intensity height, the plasticity of two straight wall zones 15 and bottom 17 are poor, and these regional materials do not produce distortion when being shaped.The intensity of two radius area 16 place's materials is low, plasticity good, can utilize U-shaped bool bending forming mould to form easily.U-shaped bool shaping blank by partial heat treatment amalgamation art breading has shaping easily, mould and former there are not advantages such as particular requirement, and the U-shaped bool intensity after being shaped is high, and the tensile strength of straight wall and bottom can reach 1400 ~ 1600MPa.
For hat bool shown in Figure 9, according to its shaping characteristic, blank can be divided into nine zones: two straight wall zones 15, bottom 17, four radius area 16 and two flanges 20, because part is in forming process, just viscous deformation takes place in four radius area 16, and other parts do not produce viscous deformation, in order to guarantee the high strength of part, plasticity and collision energy-absorbing, by its shaped sheet blank of partial heat treatment technology of the present utility model amalgamation the time, use water coolant copper mold piece to cool off to two flanges 20 and bottom 17, adopt the insulation annealing module for four radius area 16, adopting with 3～4MPa room temperature pressurized air for two straight wall zones 15 is the air cooling module of heat-eliminating medium.
Figure 10 has provided the device of the partial heat treatment of hat bool shaping blank shown in Figure 9.This device is made up of two portions up and down, two-part up and down composition structure is identical, two portions all are made up of three water coolant copper mold pieces 18, four insulation annealing modules 19 and two air cooling modules 21 up and down, and the ultrahigh-strength steel plates 13 after sheet material blank heating and the complete austenitizing is clipped in up and down between two portions.After with device shown in Figure 10 steel plate being carried out the partial heat treatment amalgamation, green strength height, the plasticity of two flanges 20 and bottom 17 are poor, and these regional materials do not produce distortion when being shaped.The intensity of four radius area 16 place's materials is low, plasticity good, can utilize cap bending forming mould to form easily.Two straight wall zones 15 have moderate intensity, and better plasticity can deform when running into more energetically, produce energy-absorbing effect.Cap shaping blank by partial heat treatment amalgamation art breading has shaping easily, mould and former there are not advantages such as particular requirement, and intensity is high, energy absorption capacity good after being shaped, the tensile strength of flange and bottom can reach 1400 ~ 1500MPa, the tensile strength of straight wall can reach 600 ~ 700MPa, and yield strength can reach 500～550MPa.
Claims (8)
1. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press, it is characterized in that: this device comprises forms the corresponding two portions of structure up and down, each part comprises a kind of module in water smoke refrigerating module, water coolant copper mold piece, water coolant steel moald-cavity, copper mold piece, steel moald-cavity, air cooling module, air cooling module and the insulation annealing module at least, and each module closely is arranged in together.
2. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described water smoke refrigerating module comprises Sheet Steel Form and shower nozzle, on Sheet Steel Form, be provided with cooling-water duct, the entrance of cooling water joint is installed on the passage, waterfog head is installed, the equal and channel connection of each shower nozzle on Sheet Steel Form.
3. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described air cooling module comprises Sheet Steel Form and shower nozzle, on Sheet Steel Form, be provided with the passage of high pressure gas, the high pressure gas inlet union is installed on the passage, the high pressure gas shower nozzle is installed, the equal and channel connection of each shower nozzle on Sheet Steel Form.
4. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described water coolant steel moald-cavity comprises Sheet Steel Form, is provided with cooling water channel in the Sheet Steel Form, and cooling water channel is provided with water-in and water outlet.
5. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described water coolant copper mold piece comprises the copper mold plate, is provided with cooling water channel in the copper mold plate, and cooling water channel is provided with water-in and water outlet.
6. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described insulation annealing module is that framework is provided with lagging material.
7. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described copper mold piece is a rectangular parallelepiped copper billet.
8. the thermal treatment splicing device before the ultrahigh-strength steel plates punching press according to claim 1, it is characterized in that: described steel moald-cavity is a rectangular parallelepiped bloom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202977754U CN201553762U (en) | 2009-12-14 | 2009-12-14 | Heat treatment splicing device used before ultra-high strength steel plate pressing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202977754U CN201553762U (en) | 2009-12-14 | 2009-12-14 | Heat treatment splicing device used before ultra-high strength steel plate pressing |
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| CN201553762U true CN201553762U (en) | 2010-08-18 |
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| CN2009202977754U Expired - Fee Related CN201553762U (en) | 2009-12-14 | 2009-12-14 | Heat treatment splicing device used before ultra-high strength steel plate pressing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928455A (en) * | 2015-06-19 | 2015-09-23 | 华中科技大学 | Differential distribution method and device of strength and plasticity for hot-stamped parts |
-
2009
- 2009-12-14 CN CN2009202977754U patent/CN201553762U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928455A (en) * | 2015-06-19 | 2015-09-23 | 华中科技大学 | Differential distribution method and device of strength and plasticity for hot-stamped parts |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Taihong Machinery & Electronics Co., Ltd. Assignor: Shandong University Contract record no.: 2011330000789 Denomination of utility model: Heat treatment splicing device used before ultra-high strength steel plate pressing Granted publication date: 20100818 License type: Exclusive License Record date: 20110622 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20151214 |
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| EXPY | Termination of patent right or utility model |