CN103785760B - Pressure process for cooling and the press hydraulic mandril device of hot forming steel pipe segmentation strengthening class part - Google Patents
Pressure process for cooling and the press hydraulic mandril device of hot forming steel pipe segmentation strengthening class part Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 20
- 230000011218 segmentation Effects 0.000 title claims abstract description 15
- 238000005728 strengthening Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000013461 design Methods 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims description 19
- 229910000712 Boron steel Inorganic materials 0.000 claims description 15
- 238000010791 quenching Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 13
- 238000003856 thermoforming Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000004069 differentiation Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005284 basis set Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
Pressure process for cooling and the press hydraulic mandril device of the hot forming steel pipe segmentation strengthening class part in a kind of hot forming stamping technology field, by the independently open and close of press hydraulic mandril group device separately, adjust the size of the suffered average loading force of workpiece, control the each subregional cooling velocity of workpiece, thereby obtain the each subregional different materials mechanical performance of workpiece. The present invention can need to realize needed material behavior in arbitrary region according to what design, does not need extra arrange mold heater, has significantly reduced production cost and complex procedures degree.
Description
Technical field
What the present invention relates to is a kind of method of high-strength steel stamping technical field, and specifically a kind of intensity reaches 1500MP left and rightPressure process for cooling and the press hydraulic mandril device of hot forming steel pipe segmentation strengthening class part.
Background technology
Automobile boron steel steel pipe is as the emerging superhigh intensity hot forming of one steel pipe, for segmentation reinforcement technique provides possible-samePart, can, according to the needs of Automobile Design, adopt different Technologies for Heating Processing in the zones of different of this part, thereby obtains differentIntensity and plasticity. The production technology of hot forming boron steel material Ruan district technology is divided into 4 stages:
1) heating: boron steel steel pipe is heated to the needed temperature of heat treatment;
2) transmission: boron steel steel pipe is sent in mould to be punched;
3) be shaped: be at high temperature shaped by mould punching;
4) quench cooled: in the different cooling velocity of zones of different control, can occur:
A) hard area cooling (> 25 DEG C fast/s). Transformation from from austenite microstructure to martensite microstructure, obtains intensityWith extreme hardness, part that plasticity is lower. Its intensity can reach 1500-2000MPa, and plasticity is greater than 5%;
B) soft district at a slow speed cooling (< 25 DEG C/s). By controlling different cooling velocities, in the process transforming at austenite structure,Can Slow cooling, to the transformation of ferrite and pearlite microstructure, obtain the part that intensity and hardness are higher, plasticity is good;Also can be comparatively fast cooling, to the transformation of bainite microstructure, obtain the part that intensity and hardness are very high, plasticity is moderate.
Its corresponding CCT phasor as shown in Figure 1.
The boron steel material typical case that can obtain varying strength and plasticity is divided into:
| Sequence number | Material specification | Yield strength (Mpa) | Tensile strength (Mpa) | Percentage elongation (A50) | Hardness (HV2) |
| 1 | HS400 | 400±50 | 600±50 | 15％ | 170-220 |
| 2 | HS550 | 550±50 | 750±50 | 7％ | 220-255 |
| 3 | HS700 | 700±50 | 900±50 | 6％ | 270-300 |
| 4 | HS1150 | 1150±50 | 1500±50 | 5％ | 400-520 |
The chemical composition that the most common one of such boron steel can reach 1500MPa intensity (HS1150) is:
| C | Si | Mn | P | S | Cr | B | |
| min | 0.20 | 0.20 | 1.00 | - | - | 0.15 | 0.0015 |
| max | 0.25 | 0.35 | 1.30 | 0.025 | 0.015 | 0.25 | 0.0050 |
The processing technology in the soft district of the above thermoforming series of at present common acquisition is mold heated method, first by mould and die preheating extremelyThe technological temperature of 370-700 DEG C, then workpiece is heated, transmits, is shaped, is incubated, the time that is shaped and is incubated by control,And then reach the control to cooling velocity, obtain different Ruan district tissue. This process mould and relevant device more complicated, energy consumptionHigher, high expensive; In mould, be high-temperature heating state to part high-pressure forming, fillet serious wear, die life is short.
Through the retrieval of prior art is found, Chinese patent literature CN102162574, open day 2011-08-24, public affairsOpened a kind of super-high strength steel laser tailor welded and forming technology thereof, by super-high strength steel and high-strength steel according to required form laser assembly solder, soAfter the welding plate of gained is sent in the stove of protective gas and is heated to 920-940 DEG C, at least continue 5 minutes, fully austenitizing,The welding plate after austenitizing is transferred to the quick matched moulds of forcing press, shaping, then pressurize quench cooled is to 100-150 DEG C, with chamber againThe warm cooling required part that makes. But this technology is to control part machinery performance by difference being expected to thick material welds together to realize,Increased laser weld operation, technology chain is longer, and cost is also higher.
Chinese patent literature CN201180036260, open day 2013-03-27, discloses a kind of for steel plate is madeWorkpiece thermoforming and shaping jig and the method for local pressure quench, this invention relates to a kind of for the workpiece of being made up of steel plate is enteredThe shaping jig of row thermoforming and local pressure quench and method, wherein workpiece heats and then has die before mouldingWith thermoforming in the shaping jig of punch, shaping jig also has cooling device. Its method is characterised in that, in the pass of shaping jigClose under state contacting partly by movable die part and work between workpiece and the die of shaping jig and the contact-making surface of punchMoving punch part moves and disconnects separating from closed position to open position. Die is by a first die part and at least oneThe second die part that can move with respect to the first die part forms, and punch is by a first punch part and at least one phaseThe second punch part that can move for the first punch part forms, wherein at least one second die part that can move and extremelyLack a second punch part that can move and open equipment acting in conjunction, this is opened equipment and causes at least one second die partThe shut-in time contacting with workpiece with at least one second punch part is shorter than the first die part and the first punch part. But this technologyDefect be:
Say from object, the method be conventional way to existing soft district technology-by mold heated to 370-700 DEG C-improvement,Object is the wearing and tearing that reduce after mold heated aborning, or reduces firing equipment, but still need to heat mould, belongs toIn the temperature control technology of cooling medium.
Say from mould structure, the punch of this technical requirement activity and die inside arrange heater, thereby complex structure.
Summary of the invention
The present invention is directed to prior art above shortcomings, the pressure that proposes a kind of hot forming steel pipe segmentation strengthening class part is coolingTechnique and press hydraulic mandril device, by the hydraulic control system of forcing press pin-lift arrangement, the suffered cooling pressurize of dynamic adjustments workpieceThe open and close time of pressure, and then control the cooling velocity in each region, thus be met the different materials in each region that product design needsThe workpiece of material mechanical performance.
The present invention is achieved by the following technical solutions:
The pressure process for cooling that the present invention relates to a kind of hot forming steel pipe segmentation strengthening class part, its step comprises:
Step 1, press, mould are prepared: on press lower table and/or press top shoe, arrange the hydraulic top working aloneBar;
Described hydraulic mandril is fixedly installed on press, according to the difference of workpiece size, shape, thickness etc., at hydraulic mandrilIn minimax pressure limit, set in advance a steady state value, and in cooling pressure maintaining period, can be in real time according to the journey setting in advanceOrder, the open and close state of dynamic adjustments push rod pressure, thereby regulate packing stage push rod packing pressure with/without curve, time-Packing pressure parameter curve, to realize the plastic force of real-time change push rod.
Described time-packing pressure parameter curve specifically refers to: arrive bottom dead centre at press and start, start to move upward to pressTill, the pressure that in the time of this section of press closes pressurize, the hydraulic mandril system of press lower table and/or press top shoe providesTime dependent curve.
Step 2, preheating: boron steel tubing is heated to more than 850 DEG C, makes the even austenitizing of tubing;
Be preferably described preheating time: 4-1200s, and with mode of heating and tubing coating Change of types and difference.
Step 3, transmission: the boron steel tubing heating is sent in thermoforming press by heater, realizes the biography to workpieceDefeated and Process Character cooling processing;
Described Process Character cooling processing, refers to transfer to the process of thermoforming press from heater, and workpiece is placed in to temperature control ringIn border, temperature when workpiece arrives thermoforming press is all lower than the temperature in heater, and cooling velocity is preferably 5-25 DEG C of 5s;
The time of described transmission is controlled, and by the distance design between heater and press, and the speed of transmitting device is adjustedJoint is realized. Transmission time between heater and press is 0.1-20s, and its total transmission range is preferably 0.5-8m. Transmission dressBe set to conveyer belt and/or manipulator, speed regulates and is preferably 0-5m/s.
Step 4, is shaped: hot-forming die is driven by press under 450～850 DEG C of environment, is moved downward to completely by top dead-centreClosure is appointed product shape by component shaping.
Step 5, cooling pressurize: hot-forming die keeps the lower dead point position that mould is completely closed constant under the driving of press,The packing pressure that press provides also remains unchanged, and segmentation is strengthened each areal pressure by press push rod hydraulic system dynamic adjustments, realizes notWith the quench cooling rate differentiation control in region.
Described quench cooling rate differentiation control refers to: the mechanical property of materials that mould need to obtain according to the each region of workpieceDifference, is divided into some regions, i.e. segmentation strengthening, and hydraulic mandril corresponding to each serial Ruan district and/or hard area, respectively does for oneself solelyThe region of vertical motion.
Described quench cooling rate differentiation control refers to: the mechanical property of materials that need to be reached by each region of workpiece determines,Change and realize by the hydraulic mandril pressure of workbench inside, generally at 5-100 DEG C/s;
Described upper die and lower die are that the pressure of the cooling packing stage in hard area is by press slide and/or press at the difference in each regionServo push rod provides, but does not change, and upper die and lower die do not have the action of relative motion yet; Each soft district die insert is by pressTop rod driving, can self contained function and the having or not of controlled pressure.
The material of described mould, the material that hard area mold materials is quick conductive is as high-quality mould steel, as H13, SKD61,8407 etc., soft district mold materials is selected with the identical quick conductive in hard area according to the difference of the required quenching velocity of work-piece coolsMaterial is as high-quality mould steel, or the low material of use pyroconductivity, as pottery, surperficial heat insulating coating etc.;
The present invention relates to a kind of press hydraulic mandril device of realizing above-mentioned technique, comprising: upper die and lower die, press top shoe,Press lower table, be placed in hydraulic mandril and hydraulic control system and mould in press top shoe and/or press lower tablePlug.
Described hydraulic mandril and hydraulic control system thereof comprise: organize press top shoe hydraulic mandril and/or press lower table moreHydraulic mandril.
Described die mandrel is specifically arranged at the inside workpiece between upper and lower material pressing core.
Described upper die and lower die inside is equipped with the not equipment for cooling die higher than room temperature in each region, upper die and lower die inside does not haveThere is heater.
The arrangement interval distance of described push rod is preferably 50mm～300mm, and stroke is 0-300mm, the single pressure of push rodPower is 0-30t.
Described press pressure scope is preferably 50-1500t, and the speed adjustable range of forcing press is 10-900mm/s.
In described patrix and/or counterdie, be respectively equipped with material pressing core.
In described upper die and lower die, patrix material pressing core and counterdie material pressing core at least one adopt high-quality mould steel as Dievar,SKD61, H13 etc. make.
Technique effect
Compared with the control of cooling velocity being realized by the temperature of mould with prior art, the present invention is by forcing press hydraulic mandrilSystem, will control the heat conduction problem of work-piece cools speed, is converted into the problem of controlling the pressure between workpiece and press hydraulic mandril,By controlled pressure, regulate the heat transfer efficiency of mould to workpiece, thereby control cooling velocity.
The present invention is as a kind of novel process of realizing hot forming steel pipe segmentation reinforcement technique, for arbitrary boron steel tube product, and canWith in its arbitrary region, between the tensile strength of 600-1500MPa and the even higher percentage elongation of 5-15%, freely define itThe product requirement of intensity and percentage elongation, thus the free degree of product design significantly expanded. Taking automobile as example, can be according to collisionSecurity needs, when can improving product strength or percentage elongation, controls the pattern that this region collision of car body was lost efficacy, thereby effectivelyProtection people's safety.
With respect to conventional softer high-strength steel segmentation strengthening processing technology, the present invention do not need additionally to arrange heater at mould inside,Thereby simple in structure, processing technology is unified; Beyond mould, do not need additional required power and the control system of mold heated yet, simplifyThe demand of firing equipment;
Hydraulic mandril system of the present invention, belongs to the one-time investment being fixedly installed on press apparatus. Once coming into operation,On mould, need only be equipped with the push rod of correspondence position, need to hydraulic mandril system be additionally installed at mould inside, thereby save mouldCost;
Ejector rod system of the present invention, realizes by hydraulic system, is the common configuration of forcing press, thereby investment is less, applied widely.Although ejecting force, once immutable size is set, can be controlled cooling velocity by the time that loading-unloading is set, for softDistrict's more single part of distribution is particularly suitable for this technology.
Brief description of the drawings
Fig. 1 is the cooling CCT phasor of boron steel in prior art.
Fig. 2 is original state schematic diagram of the present invention;
Fig. 3 is that schematic diagram is processed in thermoforming of the present invention;
Fig. 4 is that schematic diagram is processed in pressurize of the present invention;
In figure: molding compound on 1 patrix, 2 counterdies, 3 press top shoe hydraulic mandrils, 4 press lower table hydraulic mandrils, 5Core, 6 counterdie material pressing cores, 7 press top shoes, 8 press lower tables, 9 die mandrels, f1～f8Be respectively this method implement deviceThe pressure signal of diverse location;
Fig. 5 is the forcing press hydraulic mandril pressure-time curve of embodiment 1;
Fig. 6 is the forcing press hydraulic mandril pressure-time curve of embodiment 2;
Fig. 7 is the typical HS400 material crystalline phase tissue that the present invention obtains;
Fig. 8 is the typical HS1150 material crystalline phase tissue that the present invention obtains;
Fig. 9 is the typical HS700 material crystalline phase tissue that the present invention obtains.
Detailed description of the invention
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite,Provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Fig. 2-Fig. 4, workpiece is 2.0mm thickness, and 150mm is wide, 1000mm length thermoforming boron steel workpiece disconnectedFace is shaped, quenching schematic diagram. Workpiece product requirement is f6Corresponding product region is the soft district of HS400, and all the other are hard area HS1150.The concrete preparation process schematic diagram of this method, wherein:
Fig. 2 is reset condition, visible according to Fig. 2, and this method implement device comprises: patrix 1, counterdie 2, press top shoeUnder hydraulic mandril 3, press lower table hydraulic mandril 4, patrix material pressing core 5, counterdie material pressing core 6, press top shoe 7, pressWorkbench 8, die mandrel 9.
Described patrix 1 covers product hard area HS1150 scope, and material is high-quality mould steel SKD61;
Described patrix material pressing core 5 covers product soft district HS400 scope, and material is high-quality mould steel SKD61;
Described counterdie material pressing core 6 covers the most of product that comprises part hard area HS1150 Ji Ruan district HS400, and material isHigh-quality mould steel SKD61;
Described counterdie 2 covers all hard area HS1150s of product except counterdie material pressing core 6, and material is high-quality mould steelSKD61；
Described press top shoe hydraulic mandril 3, press lower table hydraulic mandril 4 are shaft-like steel, and each row, every up and downArrange 5 push rods, every row is unified to be driven by a hydraulic jack, and stroke 0-300mm is adjustable, pressure 0-150t is adjustable (single topThe pressure limit of bar is therefore at 0-30t), the dwell time is adjustable.
Fig. 2,3,4 is the present embodiment process schematic representation, and the present embodiment concrete steps comprise:
Step 1, press, mould are prepared: in press top shoe and/or press lower table, arrange that operating pressure has or not, workMake time, hydraulic mandril that operating rate is adjustable;
Step 2, preheating: boron steel tubing is heated to 930 DEG C, makes the even austenitizing of tubing;
Step 3, transmission: as shown in Figure 2, in the air of 25 DEG C of room temperatures, in 3s, workpiece is put into hot forming tool;
Step 4, is shaped: as shown in Figure 3, in 0.5s, complete forming process by 300T press, wherein liquid on forcing pressThe bar 3 that bears down on one arranges 1t pressure, and under forcing press, hydraulic mandril 4 arranges 30t pressure, and press forming power is set to 200t;
Step 5, cooling pressurize: hot-forming die keeps the lower dead point position that mould is completely closed constant under the driving of press,The packing pressure that press provides also remains unchanged, and the bear down on one bar dynamic adjustments of each areal pressure by press correspondence position strengthened in segmentation, realizesTo the quench cooling rate differentiation control of zones of different; As shown in Figure 4: on forcing press, hydraulic mandril 3 packing pressure are zero, and carryRise 0.7mm, hydraulic mandril 4 packing pressure 150t under forcing press, press top shoe hydraulic mandril 3, press lower table hydraulic mandril4 pressurize curves are constant as Fig. 5, forcing press packing pressure 200t, and after mold integral pressurize 30s, part is taken out in the demoulding.
Compared with prior art, the product performance index parameter that the present embodiment prepares is: f6Corresponding region workpiece material performanceFor HS400, crystalline phase is organized as ferrite+pearlite, as Fig. 7; All the other are hard area HS1150 material property, and crystalline phase is organized asMartensite, as Fig. 8.
Embodiment 2
As shown in Fig. 2-Fig. 4, workpiece is 2.0mm thickness, and 150mm is wide, 1000mm length thermoforming boron steel workpiece disconnectedFace is shaped, quenching schematic diagram. Workpiece product requirement is f6Corresponding product region is the soft district of HS400, f8Wei Ruan district, region HS700,All the other regions of product are hard area HS1150.
This method implement device as shown in Figure 2, wherein:
Described patrix 1 covers the soft district HS700 of product, hard area HS1150 All Ranges, and material is high-quality mould steel SKD61;
Described patrix material pressing core 3 covers product soft district HS700 All Ranges, and material is high-quality mould steel SKD61;
Described counterdie material pressing core 6 covers the All Ranges of the soft district HS700 of product, and material is high-quality mould steel SKD61;
Described counterdie 2 covers the All Ranges of product hard area HS1150, and material is high-quality mould steel SKD61;
The upper and lower hydraulic mandril 3,4 of described forcing press is shaft-like steel, each row up and down, 5 push rods of every row, every row's systemOne is driven by a hydraulic jack, and stroke 0-300mm is adjustable, and pressure 0-150t is adjustable, and (therefore the pressure limit of single push rod exists0-30t), the dwell time is adjustable.
Fig. 2,3,4 is the present embodiment process schematic representation, and compared with embodiment 1, the present embodiment concrete steps comprise:
Fig. 3 is shaped: in 0.5s, complete forming process by 300T forcing press, wherein on forcing press, hydraulic mandril 3 arranges1t pressure, under forcing press, hydraulic mandril 4 arranges 5-10t pressure, and plastic force is set to 200t;
Fig. 4 pressurize: as shown in Figure 6, wherein on forcing press, hydraulic mandril 3 packing pressure are zero to pressurize curve, and promote 0.7mm,Pressurize curve is that numerical value is zero horizontal line; Under forcing press, before hydraulic mandril 4 packing pressure, 2.5s packing pressure 200t is constant, 2.5-7.5sUnloading is without pressure, and 7.5-10s reloads to packing pressure 200t, and 10-15s unloads without pressure, and 15-30s reloads to packing pressureAfter 200t, press is opened, and the part demoulding is taken out.
Compared with prior art, the product performance index parameter that the present embodiment prepares is: f6Corresponding region workpiece material performanceFor HS400, crystalline phase is organized as ferrite+pearlite, as Fig. 7; f8Wei Ruan district, region HS700, crystalline phase is organized as ferrite+horseFamily name's body, as Fig. 9; All the other are hard area HS1150 material property, and crystalline phase is organized as martensite, as Fig. 8.
Claims (2)
1. a pressure process for cooling for hot forming steel pipe segmentation strengthening class part, is characterized in that, comprises the following steps:
Step 1, mould is prepared: in press lower table and/or press top shoe, arrange that operating pressure has or not, working time lengthHydraulic mandril and hydraulic control system thereof;
Step 2, preheating: boron steel tubing is heated to more than 850 DEG C, makes the even austenitizing of tubing;
Step 3, transmission: the boron steel tubing heating is sent in thermoforming press by heater, realizes the transmission to workpieceWith Process Character cooling processing;
Step 4, is shaped: workpiece is placed in hot forming tool and is driven by press at 450～850 DEG C of temperature, is transported downwards by top dead-centreMoving to complete closure, is appointed product shape by component shaping;
Step 5, pressurize is cooling: hot-forming die keeps the lower dead point position that mould is completely closed constant under the driving of press, pressesThe packing pressure that machine provides also remains unchanged, and the hydraulic mandril dynamic adjustments of each areal pressure by correspondence position in press strengthened in segmentation, realThe now quench cooling rate differentiation control to zones of different;
Described hydraulic mandril is fixedly installed on press, according to the difference of workpiece size, shape, thickness, in hydraulic mandril maximumWithin the scope of minimum pressure, set in advance a steady state value, and in cooling pressure maintaining period, the program that basis sets in advance in real time,The open and close state of dynamic adjustments push rod pressure, thus regulate packing stage push rod packing pressure with/without curve, i.e. time-pressurizeForce parameter curve, to realize the plastic force of real-time change push rod;
Process Character cooling processing described in step 3, refers to transfer to the process of thermoforming press from heater, and workpiece is placed inIn temperature controlled environment, temperature when workpiece arrives thermoforming press is all lower than the temperature in heater, and cooling velocity is 5-25 DEG C/s；
The time of the transmission described in step 3 is controlled, by the distance design between heater and press and the speed of transmitting deviceDegree regulates and realizes, and wherein: the transmission time between heater and press is 0.1-20s, its total transmission range is 0.5-8m;Transmitting device is conveyer belt and/or manipulator, and speed is adjusted to 0-5m/s;
Described quench cooling rate differentiation control refers to: described hydraulic mandril and hydraulic control system thereof are according to the each region of workpiece needThe difference of the mechanical property of materials obtaining, is divided into some regions, i.e. segmentation strengthening, each serial Ruan district and/or hard area pairThe hydraulic mandril of answering, the region of the self-movement of respectively doing for oneself;
Described quench cooling rate is 5-100 DEG C/s;
Described time-packing pressure parameter curve refers to: the loading of press hydraulic mandril, the curve that unloading changed with the dwell time.
2. a press hydraulic mandril device of realizing technique claimed in claim 1, is characterized in that, comprising: patrix, underMould, press top shoe, press lower table, be placed in hydraulic mandril and hydraulic pressure thereof in press top shoe and/or press lower tableControl system and die mandrel;
Described hydraulic mandril and hydraulic control system thereof comprise: organize press top shoe hydraulic mandril and/or press lower table liquid moreBar bears down on one;
Described upper die and lower die inside is equipped with the not equipment for cooling die higher than room temperature in each region, upper die and lower die inside does not haveHeater;
Described die mandrel is arranged at the inside workpiece between upper and lower material pressing core;
The arrangement interval distance of described hydraulic mandril is 50mm～300mm, and stroke is 0-300mm, the single pressure of push rodFor 0-30t.
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| CN108448366B (en) * | 2018-02-08 | 2020-03-20 | 烟台孚信达双金属股份有限公司 | Production process of copper-aluminum transition wiring terminal with limiting constraint condition |
| CN111154960A (en) * | 2019-12-31 | 2020-05-15 | 东风天汽模（武汉）金属材料成型有限公司 | Hot-forming soft and hard area part and production process thereof |
| CN113210864B (en) * | 2021-05-28 | 2023-04-18 | 东风柳州汽车有限公司 | Laser tailor-welding blank for reinforcing frame of automobile skylight and manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104318A (en) * | 2006-07-12 | 2008-01-16 | 小松产机株式会社 | Press forming apparatus and method thereof |
| JP4065069B2 (en) * | 1998-12-25 | 2008-03-19 | 北川精機株式会社 | Method and apparatus for thermoforming press working |
| JP4760578B2 (en) * | 2006-07-10 | 2011-08-31 | カシオ計算機株式会社 | Imaging apparatus, moving image shooting method, and moving image shooting control program |
| CN103042070A (en) * | 2012-12-31 | 2013-04-17 | 哈尔滨工业大学 | Method for controlling strength distribution during high-strength steel pipe hot forming |
| CN103209780A (en) * | 2010-12-27 | 2013-07-17 | Posco公司 | Method of manufacturing multi physical properties part |
| DE102012110649B3 (en) * | 2012-11-07 | 2013-11-14 | Benteler Automobiltechnik Gmbh | Thermoforming line and method for producing a hot-formed and press-hardened motor vehicle component |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3863874B2 (en) * | 2003-10-02 | 2006-12-27 | 新日本製鐵株式会社 | Hot press forming apparatus and hot press forming method for metal plate material |
| KR20100096832A (en) * | 2009-02-25 | 2010-09-02 | 현대제철 주식회사 | Cooling system for press mold and method for producing automobile parts using the same |
| KR101494113B1 (en) * | 2010-09-30 | 2015-02-16 | 가부시키가이샤 고베 세이코쇼 | Press-molded article and method for producing same |
-
2014
- 2014-01-28 CN CN201410042164.0A patent/CN103785760B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4065069B2 (en) * | 1998-12-25 | 2008-03-19 | 北川精機株式会社 | Method and apparatus for thermoforming press working |
| JP4760578B2 (en) * | 2006-07-10 | 2011-08-31 | カシオ計算機株式会社 | Imaging apparatus, moving image shooting method, and moving image shooting control program |
| CN101104318A (en) * | 2006-07-12 | 2008-01-16 | 小松产机株式会社 | Press forming apparatus and method thereof |
| CN103209780A (en) * | 2010-12-27 | 2013-07-17 | Posco公司 | Method of manufacturing multi physical properties part |
| DE102012110649B3 (en) * | 2012-11-07 | 2013-11-14 | Benteler Automobiltechnik Gmbh | Thermoforming line and method for producing a hot-formed and press-hardened motor vehicle component |
| CN103042070A (en) * | 2012-12-31 | 2013-04-17 | 哈尔滨工业大学 | Method for controlling strength distribution during high-strength steel pipe hot forming |
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