CN106734465A - Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate - Google Patents
Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate Download PDFInfo
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- CN106734465A CN106734465A CN201611141432.XA CN201611141432A CN106734465A CN 106734465 A CN106734465 A CN 106734465A CN 201611141432 A CN201611141432 A CN 201611141432A CN 106734465 A CN106734465 A CN 106734465A
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Classifications
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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
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Abstract
Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, including clad metal sheet is obtained as material plate；Stamping mold is made, punch-pin uses round-corner transition with all corners of cavity plate；Material plate is cut into required contour shape through plate shearing machine；The plate after cutting is set to realize austenitizing structural transformation；Plate positioning after being cut with alignment pin；Blank holder first contacts plate than punch-pin, and after blank holder completes flanging to plate, punch-pin presses in cavity plate the plate in flanging region；Punch-pin and cavity plate matched moulds, Cooling Quenching and pressurize, obtain punching press quenching part；Ageing Treatment is carried out to punching press quenching part using heating and thermal insulation annealing process；Then deburring operation is carried out to punching press quenching part with shot-peening mode scale removal and using laser trimming equipment.The present invention has the advantages that anticorrosion, lightweight, impact resistance and the buffering energy-absorbing performance that can improve Automobile Plate.
Description
Technical field
The present invention relates to a kind of new automobile B-column structure and the hot press-formed technology of its plate, especially it is that by
Intensity greatly improves the multilayer common metal composite plate hot press-formed technology excellent with shock resistance security performance.
Background technology
With being continuously increased for China's automobile sales volume, auto industry has become the important power for promoting China's economic growth
Amount, the development trend of automotive light weight technology causes that high-strength material application is increasingly extensive.Rolling technique is the production of high-strength steel Automobile Plate
Important step, directly affect the quality and comprehensive mechanical property of product.Hot rolled galvanized sheet common intensity is high, hardness is good, plasticity
Good, cold working is relatively difficult, meanwhile, if taking no action to, mechanical property change is bigger than normal, brings corresponding tired to subsequent handling
It is difficult.In addition, when the corrosion-resistant galvanized sheet of automobile is smelted again, the zinc layers overwhelming majority of generation enters air, and the excessive of zinc resource is used
With the huge test faced as auto industry.Current high-strength steel Automobile Plate hot rolling technology be through raw material->Heating furnace->Controlled rolling
（Roughing, finish rolling）->After laminar flow cooling technology, the high strength steel that band has surplus heat is rolled into band volume by coiling machine, moves to punching press and quench
Fiery processing enterprise is processed.
Existing punching press quenching moulding process is to provide high-strength steel Automobile Plate by high-strength steel manufacturing enterprise, by heating->Protect
Temperature->The technical process such as punching press quenching are strong by the stamped quenching formed rear formation tension of the high-strength steel of green strength 440MPa or so
Degree reaches the super-high strength steel drip molding of 1600MPa or so, and various brands automobile production enterprise is arrived in the super-high strength steel part transport of shaping.
Prior art is reached by the steel plate for carrying out multiple processing to make green strength 440MPa or so to individual layer steel plate
1600MPa tensile strength, the preparation from raw material to finished product is needed to expend mass energy, and single-layer metal is formed after Overheating Treatment
The performance of outer hard interior soft structure, its shock resistance and snubber is not good.
The content of the invention
It is an object of the invention to design a kind of new B-pillar structure, there is provided a kind of impact resistance that can improve Automobile Plate
With buffering energy-absorbing performance based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate.
Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, comprise the following steps：
1st, obtain with 2-5 layers of clad metal sheet as material plate, there is good shock resistance in clad metal sheet
Ductile layers and the strength layer with good tensile strength be spaced apart；
2nd, stamping mold is made, stamping mold mainly includes punch-pin, cavity plate and blank holder, and punch-pin is located within blank holder, punch-pin
Coordinate with cavity plate；Cooling pipe is respectively provided with punch-pin and cavity plate；Punch-pin uses round-corner transition with all corners of cavity plate；
3rd, material plate is cut into required contour shape through plate shearing machine, forms the plate after cutting；
4th, the plate after cutting is transported in heating furnace, in heating furnace to cutting after plate carry out being uniformly heated to 450
DEG C -950 DEG C, the plate after cutting is set to realize that microstructure changes；
5th, the plate processed through step 4 is transferred on cavity plate from heating furnace, the plate positioning after being cut with alignment pin；
6th, blank holder first contacts plate than punch-pin, and after blank holder completes flanging to plate, punch-pin is by the plate in flanging region
Press in cavity plate；
7th, punch-pin and cavity plate matched moulds, the cooling pipe in punch-pin and cavity plate is while punch-pin and cavity plate matched moulds with less than 25 DEG C/s
Cooling velocity Cooling Quenching, pressurize 20s ± 5s, obtain punching press quenching part；The number of plies of plate is more, the number of plies of plate is more,
Cooling velocity is slower and the dwell time is more long, and the number of plies of plate is less, cooling velocity is faster and time of pressurize is shorter；
8th, Ageing Treatment is carried out to punching press quenching part using heating and thermal insulation annealing process；Then with shot-peening mode scale removal simultaneously
Deburring operation is carried out to punching press quenching part using laser trimming equipment.
Further, in step 2, radius of corner takes 2.5-4 times of material plate thickness, and the number of plies of material plate is more, round
Angular radius is bigger.There is combination interface in clad metal sheet, the bond strength of combination interface is weaker between layers in matched moulds,
It is possible that the phenomenon of Interface Cracking, therefore, when the number of plies of clad metal sheet is more, the fillet half of increase mould corner
Footpath is big so that clad metal sheet slows down in the deformation degree of mould corner, coordinates the stratified deformation of clad metal sheet, so that
The laminated Interface Cracking of clad metal sheet is avoided as far as possible.
Further, in step 7, cooling velocity is 20 DEG C -25 DEG C/s.The number of plies of clad metal sheet is more, and cooling velocity is leaned on
Nearly lower limit；The number of plies of clad metal sheet is fewer, and cooling velocity is near higher limit.When the number of plies of clad metal sheet is more, cooling
Temperature will be transmitted successively, and that causes clad metal sheet will appear from the temperature difference between layers, and low speed cooling makes clad metal sheet slow
Cooling, is that temperature drop is tried one's best uniformly between multiple layer metal so that the temperature difference between reducing adjacent layer, will not be due to temperature it is violent
Change causes the residual stress to cause interface damage and interfacial delamination.
The beneficial effects of the invention are as follows：
（1）Material plate is changed into multilayer composite metal plate from elemental metals plate, can carry out design of material according to Service Environment,
It is not required to rely on the effect that heat treatment reaches inside and outside different performance, such as outer layer is energy-absorbing material, and internal layer is load material；Outer layer
It is resistant material, internal layer is energy-absorbing load material.
（2）Clad metal sheet outer layer can bear larger deformation when being energy-absorbing material, failure mode is broken for interlayer slabbing
It is bad, and successively to destroy, it is to avoid conquassation destruction when being hit, shock resistance buffering energy-absorbing ability is strong, improves the peace of structure
Quan Xing；Can be made up in stamping parts performance high-strength steel heat-punch member intensity is high and deficiency that plasticity is low, improve stamping parts
Anticorrosive and shock resistance buffering energy-absorbing ability.
（3）The consumption of precious metal can be reduced, economize on resources resource；Required press tonnage is small, significantly reduces
Manufacturing cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of stamping mold of the invention.
Fig. 2 is the finished product punching press quenching part being made as raw material using Q235 steel, 45 steel, two layers of clad steel plate.
Specific embodiment
Embodiment 1
Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, comprise the following steps：
1st, obtain with 2-5 layers of clad metal sheet as material plate, there is good shock resistance in clad metal sheet
Ductile layers and the strength layer with good tensile strength be spaced apart；Clad metal sheet is steel-plastics composite plate；
2nd, stamping mold is made, as shown in figure 1, stamping mold mainly includes punch-pin 1, cavity plate 6 and blank holder 3, punch-pin 1 is located at pressure
Within flange 3, punch-pin 1 coordinates with cavity plate 6；Cooling pipe is respectively provided with punch-pin 1 and cavity plate 6, punch-pin as shown in Figure 2 is cold
But pipeline 2 and cavity plate cooling pipe 5；Punch-pin 1 uses round-corner transition with all corners of cavity plate 6；Other knots of stamping mold
Structure is identical with the mould of prior art.Radius of corner takes 2.5-4 times of laminated rear sheet material integral thickness, the number of plies of material plate 4
For 5 layers when, radius of corner take 4 times of the thickness of material plate 4, when the number of plies of material plate 4 is 2 layers, radius of corner take raw material plate
2.5 times of the thickness of material 4.There is combination interface between layers in matched moulds in clad metal sheet, the bond strength of combination interface compared with
It is weak, it is possible that the phenomenon of Interface Cracking, therefore, when the number of plies of clad metal sheet is more, the circle of increase mould corner
Angular radius is big so that clad metal sheet slows down in the deformation degree of mould corner, coordinates the stratified deformation of clad metal sheet,
So as to avoid the laminated Interface Cracking of clad metal sheet as far as possible.
3rd, material plate 4 is cut into required contour shape through plate shearing machine, forms the plate after cutting.
4th, the plate after cutting is transported in heating furnace, in heating furnace to cutting after plate be uniformly heated to
Austenitic temperature is interval 727 DEG C -950 DEG C, the plate after cutting is realized austenitizing structural transformation.
5th, the plate processed through step 4 is transferred on cavity plate 6 from heating furnace, the plate after being cut with alignment pin is determined
Position.
6th, blank holder 3 first contacts plate than punch-pin 1, and after blank holder 3 completes flanging to plate, punch-pin 1 is by flanging region
Interior plate is pressed in cavity plate 6, and blank holder 3 completes flanging with to plate.
7th, punch-pin 1 and the matched moulds of cavity plate 6, cooling pipe in punch-pin 1 and cavity plate 6 while punch-pin 1 and 6 matched moulds of cavity plate with
The cooling velocity of 20 DEG C/s -25 DEG C/s is cooled down, quench simultaneously pressurize 20s or so, acquisition punching press quenching part；The number of plies of plate is more,
The number of plies of plate is more, cooling velocity is slower and the dwell time is more long, the number of plies of plate less, cooling velocity it is faster and pressurize
Time is shorter.Cooling velocity is.When the number of plies of clad metal sheet is 5 layers, cooling velocity takes 20 DEG C/s；The number of plies of clad metal sheet
Fewer when being 2 layers, cooling velocity takes 25 DEG C/s.When the number of plies of clad metal sheet is more, chilling temperature will be transmitted successively, cause multiple
Close metallic plate and will appear from the temperature difference between layers, low speed cooling makes clad metal sheet slow cooling, thus reduce adjacent layer it
Between the temperature difference, be that temperature drop is tried one's best uniformly between multiple layer metal, will not cause because the acute variation of temperature causes residual stress
Interface damage and interfacial delamination.
8th, Ageing Treatment is carried out to punching press quenching part using heating and thermal insulation annealing process；Then oxidation is removed with shot-peening mode
Skin simultaneously carries out deburring operation using laser trimming equipment to punching press quenching part.
The beneficial effects of the invention are as follows：
（1）Material plate is changed into multilayer composite metal plate from elemental metals plate, can carry out design of material according to Service Environment,
Such as replace zinc coat using stainless steel, be not required to rely on the effect that heat treatment reaches inside and outside different performance, such as outer layer is energy-absorbing
Material, internal layer is load material；Outer layer is resistant material, and internal layer is energy-absorbing load material.
（2）Clad metal sheet outer layer can bear larger deformation when being energy-absorbing material, failure mode is broken for interlayer slabbing
It is bad, and successively to destroy, it is to avoid conquassation destruction when being hit, shock resistance buffering energy-absorbing ability is strong, improves the peace of structure
Quan Xing；Can be made up in stamping parts performance high-strength steel heat-punch member intensity is high and deficiency that plasticity is low, improve stamping parts
Anticorrosive and shock resistance buffering energy-absorbing ability.
（3）The consumption of precious metal can be reduced, economize on resources resource；Required press tonnage is small, significantly reduces
Manufacturing cost.
Embodiment 2
(1) raw material plate is obtained：Using Q235 steel, 6061 aluminium alloy, two layers of clad steel plate as raw material plate.
(2) blanking：Drip molding is cut out in the plate profile needed for punching press using plate shearing machine.
（3）Plate is heated：Plate is heated to 450 DEG C -550 DEG C in heating furnace and is converted with realizing plate initial structure, increases
Splice material plasticity, heats coarse grains after reaching 450 DEG C -550 DEG C, and deep drawability improves.
（4）Plate is shifted：Manipulator by red heat plate fast transfer to cavity plate 6, by positioners pair such as alignment pins
Plate is accurately positioned.
（5）Flanging process：Blank holder 3 is connected with punch-pin 1 by flanging spring, the flanging under the drive of press ram
Circle 3 contact with plate first and it is descending and contacted with the limited post being fixed on cavity plate 6 complete flanging process.
（6）Punching press and quenching：Punch-pin 1 continues to complete punching course and pressurize 3s-15s or so so that the speed of 15m/s is descending
Time, while being connected with the cooling pipe of cooling water in being arranged in punch-pin 1 and cavity plate 6（2、5）Plate after to cutting is with more than horse
The critical cooling rate of family name's body structural transformation（20℃-25℃/s）Cooldown rate carry out hardening step and pressurize 10s or so with
Realize the Accurate Shaping of plate structural transformation and workpiece.
（7）Subsequent treatment：Using heating and thermal insulation annealing process carries out Ageing Treatment to eliminate residual stress；Use shot-peening mode
Scale removal simultaneously carries out deburring operation using laser trimming equipment to workpiece.
（8）Final stamping parts shaping, as shown in Figure 2.
In this common steel composite board, Q235 steel used, 6061 aluminum alloy materials are cheap, precious metal usage amount
Small, production technology is ripe, combines the good advantage of the high intensity and ductility of each single-layer metal, and experienced in preparation process
Refined crystalline strengthening process, intensity and plasticity are greatly improved, and improve the resistance to corrosion of stamping parts.
Content described in this specification embodiment is only enumerating to the way of realization of present inventive concept, guarantor of the invention
Shield scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in this area skill
Art personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (5)
1., based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, comprise the following steps：
1）, obtain there is 2-5 layer of clad metal sheet as material plate, with good shock resistance in clad metal sheet
Ductile layers and the strength layer with good tensile strength be spaced apart；
2）, make stamping mold, stamping mold mainly include punch-pin, cavity plate and blank holder, punch-pin be located at blank holder within, punch-pin
Coordinate with cavity plate；Cooling pipe is respectively provided with punch-pin and cavity plate；Punch-pin uses round-corner transition with all corners of cavity plate；
3）, material plate is cut into required contour shape through plate shearing machine, formation cut after plate；
4）, will cut after plate be transported in heating furnace, in heating furnace to cutting after plate carry out being uniformly heated to 425
DEG C -950 DEG C, the plate after cutting is set to realize austenitizing structural transformation；
5）, the plate processed through step 4 is transferred on cavity plate from heating furnace, the plate positioning after being cut with alignment pin；
6）, blank holder first contact plate than punch-pin, after blank holder completes flanging to plate, punch-pin is by the plate in flanging region
Press in cavity plate；
7）, punch-pin and cavity plate matched moulds, cooling pipe in punch-pin and cavity plate while punch-pin and cavity plate matched moulds with less than 25 DEG C/
The cooling velocity Cooling Quenching of s, pressurize 20s ± 5s, acquisition punching press quenching part；The number of plies of plate is more, the number of plies of plate is more,
Cooling velocity is slower and the dwell time is more long, and the number of plies of plate is less, cooling velocity is faster and time of pressurize is shorter；
8）, Ageing Treatment carried out to punching press quenching part using heating and thermal insulation annealing process；Then shot-peening mode scale removal is used
And deburring operation is carried out to punching press quenching part using laser trimming equipment.
2. as claimed in claim 1 based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, it is special
Levy and be：Step 2）In, radius of corner takes 2.5-4 times of material plate thickness, the number of plies of material plate is more, radius of corner more
Greatly.
3. as claimed in claim 2 based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, it is special
Levy and be：Step 7）In, cooling velocity is 20 DEG C -25 DEG C/s.
4. as claimed in claim 1 based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, it is special
Levy and be：Step 4）In, when composite metal plate is steel-steel composite board material, the heating-up temperature of heating furnace is 727 DEG C -950 DEG C.
5. as claimed in claim 1 based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate, it is special
Levy and be：Step 4）In, when composite metal plate is steel-aluminum composite plate material, the heating-up temperature of heating furnace is 450 DEG C -550 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141432.XA CN106734465B (en) | 2016-12-12 | 2016-12-12 | Method based on the hot press-formed production automobile B-column of multilayer common metal composite plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141432.XA CN106734465B (en) | 2016-12-12 | 2016-12-12 | Method based on the hot press-formed production automobile B-column of multilayer common metal composite plate |
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| CN106734465A true CN106734465A (en) | 2017-05-31 |
| CN106734465B CN106734465B (en) | 2018-12-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363142A (en) * | 2016-05-13 | 2017-11-21 | 株式会社日立制作所 | The heat stamping and shaping control method of clad metal sheet |
| CN108994135A (en) * | 2018-07-11 | 2018-12-14 | 北京航星机器制造有限公司 | A kind of quenching integrated manufacturing process of hot forming |
| WO2019033711A1 (en) * | 2017-08-15 | 2019-02-21 | 上海交通大学 | Integrated process of hot stamping and die trimming |
| CN111496050A (en) * | 2020-04-09 | 2020-08-07 | 武汉理工大学 | Cold-hot composite stamping forming device and stamping method for aluminum alloy plate |
| CN113996711A (en) * | 2021-11-05 | 2022-02-01 | 北京星航机电装备有限公司 | High-temperature titanium alloy skin hot-drawing deep-inflation composite forming method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363142A (en) * | 2016-05-13 | 2017-11-21 | 株式会社日立制作所 | The heat stamping and shaping control method of clad metal sheet |
| CN107363142B (en) * | 2016-05-13 | 2020-11-03 | 株式会社日立制作所 | Hot stamping forming control method of composite metal plate |
| WO2019033711A1 (en) * | 2017-08-15 | 2019-02-21 | 上海交通大学 | Integrated process of hot stamping and die trimming |
| CN108994135A (en) * | 2018-07-11 | 2018-12-14 | 北京航星机器制造有限公司 | A kind of quenching integrated manufacturing process of hot forming |
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| CN111496050A (en) * | 2020-04-09 | 2020-08-07 | 武汉理工大学 | Cold-hot composite stamping forming device and stamping method for aluminum alloy plate |
| CN111496050B (en) * | 2020-04-09 | 2022-03-25 | 武汉理工大学 | Cold-hot composite stamping forming device and stamping method for aluminum alloy plate |
| CN113996711A (en) * | 2021-11-05 | 2022-02-01 | 北京星航机电装备有限公司 | High-temperature titanium alloy skin hot-drawing deep-inflation composite forming method |
| CN113996711B (en) * | 2021-11-05 | 2024-02-06 | 北京星航机电装备有限公司 | High-temperature titanium alloy skin hot drawing and flatulence composite forming method |
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