CN201353623Y - Ultra high strength steel hot stamping forming die - Google Patents
Ultra high strength steel hot stamping forming die Download PDFInfo
- Publication number
- CN201353623Y CN201353623Y CNU200820233331XU CN200820233331U CN201353623Y CN 201353623 Y CN201353623 Y CN 201353623Y CN U200820233331X U CNU200820233331X U CN U200820233331XU CN 200820233331 U CN200820233331 U CN 200820233331U CN 201353623 Y CN201353623 Y CN 201353623Y
- Authority
- CN
- China
- Prior art keywords
- cooling
- die
- water
- water duct
- punch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides an ultra high strength steel hot stamping forming die, comprising a convex die, a concave die and a control unit. An electric heating element and a cooling water channel are respectively arranged in the convex die and the concave die. Temperature sensors are arranged in the convex die and the concave die. A reset switch and a platen are respectively arranged on the lateral sides of the convex die and the concave die. The control unit comprises a water pump, a three-way valve, a two-way valve, a one-way valve and a programmable controller. The water intake end of the water pump is connected with the cooling water source, and the water output end is connected with the inlet of the cooling water channel through the three-way valve. One outlet of the three-way valve is directly connected with the cooling water source. One end of the two-way valve is connected with the compressed air source, and the other end is connected with the inlet of the cooling water channel. The outlet of the cooling water channel is connected with the one-way valve. The reset switch, the electric heating element and the temperature sensor are connected with the programmable controller. The ultra high strength steel hot stamping forming die can avoid the producing of the crack on the surface and the inside of the shaped part, eliminates the resilience of the forming of the parts and ensures the precision and the quality of the product.
Description
Technical field
The utility model relates to a kind of unimach hot stamping forming die, belongs to unimach plate punch forming technical field.
Background technology
The automobile lightweight can reduce fuel consume, reduce the toxic emission of engine.Still can satisfy the collision safety performance after making the automobile lightweight, each big motor corporation has turned to focus the application of new material new process when optimizing automobile frame and structure.Especially aspect body structure,, improved the collision performance of automobile, also realized light-weighted requirement simultaneously by research and use to AHSS and unimach.But raising along with steel strength, the percentage 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.
In recent years, the foreign scholar develops a kind of new high strength, ultra-high strength steel hot stamping forming technology, this technology makes high strength steel and unimach plate be heated to austenitizing temperature (900～950 ℃) in heating furnace, and austenitic area maintenance 5 minutes, then plate is transferred to forcing press, in diel, carry out drawing and quenching simultaneously, make formation of parts obtain 100% martensitic structure.This technology can reduce the weight of automobile structure when improving collision performance and fatigue strength.
Chinese patent application CN101288889 discloses a kind of " ultra-high strength steel hot stamping forming die ", this mould comprises upper bolster and is fixed on punch, the die shoe on the upper bolster and is fixed on die on the die shoe, be provided with cooling-water duct in the die, cooling-water duct is connected with a cooling water recirculation system.In this invention, only be provided with and be used to the cooling-water duct that reduces mold temperature and part is cooled off.
Chinese patent application CN1829813 disclosure of the Invention a kind of " method for hot forming and hot formed member ", for the steel plate of special component be heated to austenite point temperature (Ac3) above and keep after, carry out the shaping of end article shape, in the cooling of the forming temperature in shaping or after be shaped, the cooling velocity of the Ma Shi point temperature (Ms point) of arrival formed parts is more than critical cooling rate, and, be that Quenching Treatment is carried out in 25 ~ 150 ℃/s cooling with average cooling rate from Ms o'clock to 200 ℃.
In the drop stamping process, must guarantee before martensite transfor mation takes place, to finish drawing, otherwise, problem such as martensitic high strength and low ductility can cause part to crack in forming process, hot press-formed resilience is serious.Above-mentioned two patents have all only been considered the cooling procedure of hot stamping die, but do not consider the heating of hot stamping die.In the drop stamping process and since the temperature of mould that is used for drop stamping, reaches the steel plate of austenitic temperature with the temperature of cooling water quite (20 ~ 30 ℃) be positioned on the mould after, steel plate and mould contact portion will be with generation heat transmission between the mould.Because the thickness of plate generally is positioned between 1.0 ~ 3.0mm, (200 ~ 400mm), thickness is much smaller with respect to mold thickness.This will cause plate and mould contact site to be reduced to before the drop stamping moulding is carried out under the Ma Shi point temperature (Ms point), and produced martensitic structure, thereby influenced the processability of plate, springback capacity is big after causing the drop stamping forming parts, even cause surface of shaped parts and inside to crack, influence the formed precision and the Forming Quality of drop stamping part.
Summary of the invention
The utility model provides a kind of and can avoid surface of shaped parts and the inner unimach hot stamping forming die that cracks, eliminates the forming parts resilience, guarantees product precision and quality at the problem that existing superhigh intensity steel hot forming technique exists.
Unimach hot stamping forming die of the present utility model is by the following technical solutions:
This unimach hot stamping forming die comprises punch, die and control module, the inside of punch and die is provided with heating and cooling-water duct, in punch and die, be provided with temperature sensor, be respectively arranged with reset switch and pressing plate in the side of die and punch, control module comprises water pump, triple valve, two-way valve, check valve and Programmable Logic Controller, the water inlet end of water pump is connected with cooling water source, the water side is connected with the inlet of cooling-water duct by triple valve, an outlet of triple valve directly is connected with cooling water source, one end of two-way valve is connected with compressed air source, the other end is connected with the inlet of cooling-water duct, the outlet of cooling-water duct is connected with check valve, this check valve links to each other with cooling water source, reset switch, heating, temperature sensor all is connected with Programmable Logic Controller, and Programmable Logic Controller is connected with a touch-screen.
A kind of arrangement mode of heating and cooling-water duct is that its axis equidistantly is spaced in same plane, and promptly heating equates with the distance of cooling-water duct apart from punch or die surface apart from the distance on punch or die surface.
The another kind of arrangement mode of heating and cooling-water duct is that the branch two rows are arranged, and heating is parallel with the axis of cooling-water duct.
The third arrangement mode of heating and cooling-water duct is that the axis of heating and cooling-water duct is distributed in two planes; its axis is spatial vertical to be arranged, and heating is unequal apart from the distance on punch or die surface with cooling-water duct apart from the distance on punch or die surface.
The workflow of above-mentioned unimach hot stamping forming die is:
Uninterruptedly running behind the starting mode of pump is up to stopping press work.Utilize pressure-air that the cooling water in the cooling-water duct in the hot stamping die is discharged, allow only have air in the cooling-water duct of mould; Provide alternating current or direct current to heating, utilize heating that the temperature on mould parts surface is reached more than the martensite point of corresponding unimach steel plate; Unimach plate after the complete austenitizing is positioned in the mould, carries out hot press-formed; (behind the drop stamping forming parts) feeds cooling water after the hot stamping die closure in the cooling-water duct of mould, and mould is cooled off, and utilizes with the contacted mould parts of drop stamping part superhigh intensity steel hot part is quenched; After the drop stamping part had cooled off, the drop stamping part was taken out in die sinking.Carry out next working cycles then.
In whole workflow, the temperature of the corresponding part of hot stamping die is controlled by control module.For fear of cooling water at the heat of heating process hyperabsorption and delay the programming rate of mould; and prevent because the HTHP that the cooling water vaporization causes works the mischief to mould, pipeline, temperature control equipment, operating personnel etc.; before heating heats mould; utilize pressure-air that the cooling water in the cooling-water duct of punch or die is discharged, allow only have air in the cooling water channel.In order to save the production time, in die sinking, utilize pressure-air that the cooling water in the cooling-water duct of punch or die is discharged, allow only have air in the cooling-water duct.Cooling-water duct is the highway of cooling water and pressure-air.
The heating that the utility model utilization is embedded in hot stamping die inside heats punch and die, utilize the cooling water that feeds in the cooling-water duct that mould is cooled off, understand the variations in temperature of die surface by temperature sensor, determine the heating of drop stamping process, cooling, the time of beats such as die sinking, the ultrahigh-strength steel plates of having avoided reaching austenitic temperature is positioned on the mould and produces too much heat transmission between the back and mould, make moulding unimach plate and mould contact site before not produce martensite, keep its good processability, avoided surface of shaped parts and inside to crack, eliminate the resilience behind the drop stamping forming parts, improved the yield rate and the Forming Quality of drop stamping forming part.
Description of drawings
Fig. 1 is the structural representation of unimach hot stamping die temperature control unit of the present utility model.
Fig. 2 is the structural representation of punch or die in the unimach hot stamping die of the present utility model.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is along the cutaway view of A-A line among Fig. 3.
Fig. 5 is heating and first kind of arrangement schematic diagram of cooling-water duct in the utility model.
Fig. 6 is heating and second kind of arrangement schematic diagram of cooling-water duct in the utility model.
Fig. 7 is heating and the third arrangement schematic diagram of cooling-water duct in the utility model.
Fig. 8 is the structural representation that adopts the crooked hot stamping die of U-shaped spare of the utility model structure.
Fig. 9 is the structural representation that adopts the crooked hot stamping die of cap of the utility model structure.
Wherein: 1; filter, 2; water pump, 3; Pneumatic three-way valve; 4; check valve, 5; the pressure regulation filter, 6; pneumatic two-way valve; 7; Programmable Logic Controller (PLC), 8; distributor, 9; relay; 10; reset switch, 11; heating, 12; AC power; 13; temperature sensor, 14; touch-screen, 15; forcing press; 16; compressed air source, 17; the cooling-water duct inlet, 18; the cooling-water duct outlet; 19; the cooling pond, 20; cooling-water duct, 21; punch or die; 22; crooked punch, 23; crooked die, 24; pressing plate; 25; the unimach plate, 26; punch, 27; die; 28; holding pad, 29; pressing plate.
The specific embodiment
Unimach hot stamping forming die of the present utility model comprises punch, die and control module.As Fig. 2, Fig. 3 and shown in Figure 4, the internal condition of punch or die 21 need be provided with heating 11, cooling-water duct 20, and cooling-water duct 20 is respectively equipped with cooling-water duct inlet 17 and cooling-water duct outlet 18.In punch or die 21, be provided with temperature sensor 13 (referring to Fig. 5, Fig. 6, Fig. 7) as required.In addition, on punch and die, be respectively equipped with reset switch 10 and pressing plate (not marking among Fig. 2), be used to judge whether punch and die are in closure state referring to Fig. 8 and Fig. 9.The set-up mode of heating 11 and cooling-water duct 20 can have various ways, form shown in Figure 5 is that the axis of each heating 11 and cooling-water duct 20 equidistantly is spaced in same plane, and heating 11 equates with the distance of cooling-water duct 20 apart from punch or die 21 surfaces apart from the distance on punch or die 21 surfaces; Form shown in Figure 6 is that 20 fens two rows of heating 11 and cooling-water duct are arranged, heating 11 is parallel with the axis of cooling-water duct 20, and heating 11 is unequal apart from the distance on punch or die 21 surfaces with cooling-water duct 20 apart from the distance on punch or die 21 surfaces; Form shown in Figure 7 is that the axis of the axis of heating 11 and cooling-water duct 20 is distributed in two planes and is three-dimensional arranged vertical, and heating 11 is unequal apart from the distance on punch or die 21 surfaces with cooling-water duct 20 apart from the distance on punch or die 21 surfaces.
In order accurately to control the temperature of hot stamping die in the production process, also comprise control module as shown in Figure 1 in the mould of the present invention.This control module comprises water pump 2, pneumatic two-way valve 6, check valve 4 and Programmable Logic Controller (PLC) 7.The water inlet end of water pump 2 is connected with cooling pond 19 by filter 1, the water side is connected with cooling-water duct inlet 17 by Pneumatic three-way valve 3, in cooling-water duct, to add cooling water, an outlet of Pneumatic three-way valve 3 directly is connected with cooling pond 19, so that when in cooling-water duct, not needing cooling water, directly get back to cooling pond 19 by the water that water pump 2 pumps, by the flow direction of Pneumatic three-way valve 3 control cooling waters by Pneumatic three-way valve 3.One end of pneumatic two-way valve 6 is connected with compressed air source 16 by pressure regulation filter 5, and an end is connected with cooling-water duct inlet 17, so that bubbling air all blows out cooling water in cooling-water duct.Cooling-water duct outlet 18 links to each other with cooling pond 19 by check valve 4.When mold heated, check valve 4 avoids cooling water to blow back into mould inside.Reset switch 10, heating 11, temperature sensor 13, touch-screen 14 all are connected with Programmable Logic Controller (PLC) 7, heating 11 is connected with distributor 8 by relay 9, distributor 8 is connected with AC power 12, and Programmable Logic Controller (PLC) 7 connects, work by Programmable Logic Controller (PLC) 7 control heatings 11, the control assembly of forcing press 15 also is connected with Programmable Logic Controller (PLC) 7, by Programmable Logic Controller (PLC) 7 according to the closure of punch-die on the signal automatic pressure control machine 15 of reset switch 10 with open.Touch-screen 14 is used for displays temperature, input control parameter etc.
In hot press-formed process; import the control parameters such as temperature range of punch or die 21 earlier by touch-screen 14; measure the temperature of punch or die 21 by the temperature sensor 13 that is embedded in mould inside; if temperature is not positioned within the high temperature range of setting (more than the martensite point of ultrahigh-strength steel plates; be generally 270 ~ 420 ℃); and reset switch 10 is in the state of opening; then Programmable Logic Controller (PLC) 7 control distributors 8 give heating 11 power supplies by relay 9; utilize 11 pairs of punch of heating; die or holding pad quickly heat up within the high temperature range; at punch; after the temperature of die or holding pad is raised to the maximum temperature of setting, the unimach plate that is heated to austenitic state is put on the die.Then, operating personnel utilize touch-screen 14 to send ready signal to Programmable Logic Controller (PLC) 7, Programmable Logic Controller (PLC) 7 to forcing press 15 send can moulding signal, punch and die closure are finished forming process; After the mould closure, reset switch 10 on punch and the die is also closed simultaneously, after Programmable Logic Controller (PLC) 7 receives the closure signal of reset switch 10, the on off state of control Pneumatic three-way valve 3, allow cooling water enter the cooling-water duct inlet 17 of punch and die, utilize cooling water that punch and die are cooled off fast, when the temperature of punch and die is cooled within the range of set temperature, Programmable Logic Controller (PLC) 7 sends the signal that can open mould to forcing press 15, takes out forming part.When mould was opened, reset switch 10 was in open mode, and Programmable Logic Controller (PLC) 7 receives the on off state of control Pneumatic three-way valve 3 behind the signal that reset switch 10 sends, and allows cooling water directly get back to cooling pond 19.Controlling pneumatic two-way valve 6 simultaneously opens; compressed air enters cooling-water duct 20 through pressure regulation filter 5 and pneumatic two-way valve 6 by the cooling-water duct inlet 17 of punch or die 21, and the remaining cooling water in punch or the die 21 is blown and gets back to cooling pond 19 by cooling-water duct outlet 18, check valve 4.Enter in punch or the die 21 after 2 ~ 3 seconds at compressed air, control module gives heating 11 power supplies, enters the next circulation that is shaped then.
Fig. 8 has provided a kind of schematic diagram that adopts the crooked hot stamping die of U-shaped spare of structure of the present invention.The crooked hot stamping die of this U-shaped spare comprises crooked punch 22 and crooked die 23.Be provided with cooling-water duct 20 in the crooked punch 22, rigidly fix the pressing plate 24 of contact reset switch 10 on it, and along with crooked punch 23 moves together.Be provided with cooling-water duct 20, temperature sensor 13 and the heating 11 that distributes along its die cavity in the crooked die 23, reset switch 10 is equipped with on the top, side of crooked die 23.Crooked punch 22 and crooked die 23 are connected with control module shown in Figure 1, and the unimach plate 25 that is heated to austenitic state is placed on the crooked die 23, can finish the moulding of U-shaped spare by the control of control module.Certainly, this bending mould also needs other punch components commonly used such as cope match-plate pattern, lower bolster, guide pillar, guide pin bushing, die shank.
When adopting the Usibor1500P ultrahigh-strength steel plates, according to the isothermal transformation curve of Usibor1500P, in the crooked mold heated stage of hot stamping die before moulding of above-mentioned U-shaped spare, the heating-up temperature scope of mould is 400 ~ 420 ℃; In the mold cools down stage after moulding, the temperature range of mould is controlled between 80 ~ 100 ℃; The diameter of temperature sensor is 2mm, the temperature sensor installation site apart from the surperficial 2mm of die about; The diameter of cooling-water duct and heating is 10mm, and cooling-water duct and heating are about 10mm apart from the surface of punch or die, and the arrangement interval of cooling-water duct and heating distance is 15 ~ 20mm.
Fig. 9 has provided a kind of schematic diagram that adopts the crooked hot stamping die of cap of structure of the present invention.This cap bending mould comprises punch 26 and die 27.Have the holding pad 28 that plays the binder effect in hot press-formed process on the punch 26, be equipped with cooling-water duct 20 in punch 26 and the holding pad 28, rigidly fix the pressing plate 29 of contact reset switch 10 on it, pressing plate 29 is along with punch 26 moves together.Be provided with the cooling-water duct 20, temperature sensor 13 and the heating 11 that distribute around its die cavity in the die 27, reset switch 10 is equipped with on the top, side of die 27.Punch 26 and die 27 are connected with control module shown in Figure 1, and the unimach plate 25 that is heated to austenitic state is placed on the die 27, can finish the moulding of cap by the control of control module.Equally, this bending mould also needs other punch components commonly used such as cope match-plate pattern, lower bolster, guide pillar, guide pin bushing, die shank.
When adopting the Usibor1500P ultrahigh-strength steel plates, according to the isothermal transformation curve of Usibor1500P, in the crooked mold heated stage of hot stamping die before moulding of above-mentioned cap, the heating-up temperature scope of mould is 400 ~ 420 ℃; In the mold cools down stage after moulding, the temperature range of mould is controlled between 80 ~ 100 ℃; The diameter of temperature sensor is 2mm, the temperature sensor installation site apart from the surperficial 2mm of die about; The diameter of cooling-water duct and heating is 10mm, and cooling-water duct and heating are about 10mm apart from the surface of punch or die, and the arrangement interval of cooling-water duct and heating distance is 15 ~ 20mm; Cooling-water duct is about 15mm apart from the distance on the surface of holding pad, and heating is about 10mm apart from the distance on the surface of holding pad, and the arrangement interval of cooling-water duct or heating distance is about 30mm.
Claims (4)
1. unimach hot stamping forming die, comprise punch, die and control module, it is characterized in that: the inside of punch and die is provided with heating and cooling-water duct, in punch and die, be provided with temperature sensor, be respectively arranged with reset switch and pressing plate in the side of die and punch, control module comprises water pump, triple valve, two-way valve, check valve and Programmable Logic Controller, the water inlet end of water pump is connected with cooling water source, the water side is connected with the inlet of cooling-water duct by triple valve, an outlet of triple valve directly is connected with cooling water source, one end of two-way valve is connected with compressed air source, the other end is connected with the inlet of cooling-water duct, the outlet of cooling-water duct is connected with check valve, this check valve links to each other with cooling water source, reset switch, heating, temperature sensor all is connected with Programmable Logic Controller, and Programmable Logic Controller is connected with a touch-screen.
2. unimach hot stamping forming die according to claim 1 is characterized in that: the arrangement mode of described heating and cooling-water duct is that its axis equidistantly is spaced in same plane.
3. unimach hot stamping forming die according to claim 1 is characterized in that: the arrangement mode of described heating and cooling-water duct is that the branch two rows are arranged, and heating is parallel with the axis of cooling-water duct.
4. unimach hot stamping forming die according to claim 1 is characterized in that: the arrangement mode of described heating and cooling-water duct is that the axis of heating and cooling-water duct is distributed in two planes, and its axis is spatial vertical and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820233331XU CN201353623Y (en) | 2008-12-30 | 2008-12-30 | Ultra high strength steel hot stamping forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820233331XU CN201353623Y (en) | 2008-12-30 | 2008-12-30 | Ultra high strength steel hot stamping forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353623Y true CN201353623Y (en) | 2009-12-02 |
Family
ID=41409964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820233331XU Expired - Lifetime CN201353623Y (en) | 2008-12-30 | 2008-12-30 | Ultra high strength steel hot stamping forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353623Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172719A (en) * | 2011-02-12 | 2011-09-07 | 机械科学研究总院先进制造技术研究中心 | Hot stamping mould with temperature measuring system |
| CN104874679A (en) * | 2014-02-28 | 2015-09-02 | 福特汽车公司 | System and process for producing a metallic article |
| CN103302191B (en) * | 2013-06-19 | 2015-09-30 | 上海本特勒汇众汽车零部件有限公司 | A kind of diel cooling water recirculation system |
| CN108237181A (en) * | 2016-12-23 | 2018-07-03 | 财团法人金属工业研究发展中心 | Building mortion |
| CN109195723A (en) * | 2016-04-25 | 2019-01-11 | 爱信艾达工业株式会社 | The cooling means of mold, die device and workpiece |
| CN110216201A (en) * | 2019-07-18 | 2019-09-10 | 上海凌云汽车模具有限公司 | A kind of automatic sprinkler suitable for spraying water in mould |
-
2008
- 2008-12-30 CN CNU200820233331XU patent/CN201353623Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172719A (en) * | 2011-02-12 | 2011-09-07 | 机械科学研究总院先进制造技术研究中心 | Hot stamping mould with temperature measuring system |
| CN103302191B (en) * | 2013-06-19 | 2015-09-30 | 上海本特勒汇众汽车零部件有限公司 | A kind of diel cooling water recirculation system |
| CN104874679A (en) * | 2014-02-28 | 2015-09-02 | 福特汽车公司 | System and process for producing a metallic article |
| CN109195723A (en) * | 2016-04-25 | 2019-01-11 | 爱信艾达工业株式会社 | The cooling means of mold, die device and workpiece |
| CN108237181A (en) * | 2016-12-23 | 2018-07-03 | 财团法人金属工业研究发展中心 | Building mortion |
| CN110216201A (en) * | 2019-07-18 | 2019-09-10 | 上海凌云汽车模具有限公司 | A kind of automatic sprinkler suitable for spraying water in mould |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101439382B (en) | Thermal punch forming mold for super-strength steel | |
| CN102304612B (en) | High-temperature splicing and quenching forming process and device of ultrahigh-strength steel | |
| CN201353623Y (en) | Ultra high strength steel hot stamping forming die | |
| CN107297407A (en) | Aluminum alloy plate materials die quenching composite forming method and its integrated apparatus | |
| CN102039349A (en) | Method and thermal recasting assembly for producing a hardened, thermally recast workpiece | |
| CN103233109B (en) | Control method and device for hot-forming plasticity distribution of high-strength steel | |
| CN101717850B (en) | Thermal treatment splicing process for ultra-high strength steel plate before stamping and device thereof | |
| CN103934360A (en) | Hot stamping and warm blanking composite forming technology and mould for ultrahigh-strength steel | |
| CN106391850A (en) | High-strength steel plate hot-stamping and in-mold quenching process | |
| CN102162574A (en) | Ultrahigh-strength steel laser tailor welded blank and forming process thereof | |
| CN204711008U (en) | A kind of 22MnB5 boron steel U-shaped heat stamping and shaping cooling experiment mould | |
| CN102228936B (en) | Hot stamping die and process for high-strength martensite steel plate | |
| CN105598282B (en) | A kind of automobile energy-absorbing structure hot forming stamping device and process for stamping | |
| CN204338656U (en) | The hot forming of uiform section boron steel steel pipe and water-cooling process production equipment | |
| CN204545086U (en) | The gases at high pressure bulging hot forming segmentation strengthening mould of boron steel steel pipe | |
| CN103949552B (en) | Optimum temperature control device for thermoforming of high-strength steel | |
| CN101264489B (en) | Automobile out star wheel isothermal extrusion preliminary shaping device | |
| CN103394557B (en) | U-shaped bent piece die device for Q&P one-step hot stamping forming | |
| CN205236805U (en) | Car energy -absorbing structure hot formed stamping device | |
| CN104191174B (en) | Hot bending-quenching compound forming technology for lower front arc deck | |
| CN205289486U (en) | A mould that is used for segmentation of hot formed boron steel material to reinforce | |
| CN204276693U (en) | The gases at high pressure bulging hot-forming die of boron steel steel pipe | |
| CN202297712U (en) | High-temperature splicing quenching forming device for ultrahigh strength steel | |
| CN201543672U (en) | Extrusion molding device for outer star wheel of automobile | |
| CN205763414U (en) | Laser assisted punching press high intensity and the device of lightweight parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tai'an Shengtai Automobile Parts Co., Ltd. Assignor: Shandong University Contract fulfillment period: 2009.12.26 to 2014.12.25 Contract record no.: 2010370000011 Denomination of utility model: Ultra high strength steel hot stamping forming die Granted publication date: 20091202 License type: Exclusive license Record date: 20100106 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.26 TO 2014.12.25; CHANGE OF CONTRACT Name of requester: TAIAN SHENGTAI AUTOMOBILE CO., LTD. Effective date: 20100106 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091202 Effective date of abandoning: 20081230 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091202 Effective date of abandoning: 20081230 |