CN203356396U - Hot stamping die for mechanical performance testing - Google Patents

Hot stamping die for mechanical performance testing Download PDF

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Publication number
CN203356396U
CN203356396U CN 201320397843 CN201320397843U CN203356396U CN 203356396 U CN203356396 U CN 203356396U CN 201320397843 CN201320397843 CN 201320397843 CN 201320397843 U CN201320397843 U CN 201320397843U CN 203356396 U CN203356396 U CN 203356396U
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CN
China
Prior art keywords
die
punch
cooling
hot stamping
male die
Prior art date
Application number
CN 201320397843
Other languages
Chinese (zh)
Inventor
王武荣
韦习成
张磊
赵玉璋
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上海大学
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Application filed by 上海大学 filed Critical 上海大学
Priority to CN 201320397843 priority Critical patent/CN203356396U/en
Application granted granted Critical
Publication of CN203356396U publication Critical patent/CN203356396U/en

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Abstract

The utility model relates to a hot stamping die for mechanical performance testing. The hot stamping die comprises a male die, a male die fixing device, a male die base, a female die, a female die fixing device, a female die base, straight-line cooling pipelines and temperature thermocouples. The male die is arranged on the male die fixing device and fixed to the male die base, the male die is provided with male die water inlets and male die water outlets and in threaded connection with cooling water ways through plastic pipes to form unblocked cooling loops, and cooling water flows through the cooling pipelines through the male die water inlets and flows out of the male die through the male die water outlets to complete a cooling cycle. The installation principle of the female die is the same as that of the male die; the temperature thermocouples are arranged below a flange and a molded surface of the male die and a flange and a molded surface of the female die in parallel. The hot stamping die can record changes of temperature around a plate in the hot stamping process, optimize hot stamping technological parameters, reduce influences of high-temperature atmosphere on the service life of the dies and the service life of a press in the hot stamping process and bring convenience to study on mechanical performance of different portions of a part after hot stamping.

Description

A kind of hot stamping die for Mechanics Performance Testing

Technical field

The utility model relates to a kind of hot stamping die for Mechanics Performance Testing, belongs to technical field of hot stamping and forming, the experimental study of part mechanical property and microstructure after especially can realizing ultra-high strength steel hot stamping is shaped.

Background technology

Along with the raising of global energy, environmental crisis and people's environmental consciousness, the weight that the automaker seeks to alleviate body in white (BIW) reduces the consumption of the energy.Recently adopt high-strength steel sheet particularly the hot forming technology of manganese boron steel become the technology of a key of a large amount of raising body in white strength of parts ratios, apply this technology and can produce the high strength parts up to 1600MPa, become the focus that numerous car manufactures are paid close attention in the world at present.The principle of this technology is that the ultrahigh-strength steel plates plate is heated to more than austenitizing temperature and is incubated 3 ~ 5min, then by the plate fast transfer in the mould with cooling system, start the press punching press, with certain cooldown rate, quench, make the plate tissue by austenite to martensite transfor mation, and pressurize a period of time make accessory size stable, the final part with high strength martensitic tissue that obtains.

For guarantee in the drop stamping process quenching cooling rate 30 ℃/more than s, and guarantee that each position of plate is cooling evenly, obtain the hot forming part of even tissue, stable mechanical property, need to be at the rational cooling system of hot stamping die indoor design.

In hot stamping die, the design of cooling system is mainly taked to be used as cooling pipe in the boring of punch and matrix ad-hoc location at present, and then external water circulation system forms cooling-water duct.But the heat-punch member shape matching complexity due to general, for cooling abundant cooling-water duct is set to the mixing formula more, will cause cooling inhomogeneities like this, makes the unstable properties of heat-punch member.In addition, the hot stamping die of some former scholar's designs is seldom considered the impact of high temperature atmosphere on press and die life, makes the reduction in service life of mould and press.And the hot stamping die of the utility model Patent design, adopt the straight-line cooling-water duct, purpose is in order to solve inhomogeneous cooling even property problem that in the drop stamping process, mixing formula cooling-water duct brings and high temperature atmosphere to the impact in mould and press service life, to have considered emphatically in addition the factors such as research to part mechanical property after drop stamping.

The utility model content

The defect existed for prior art, the purpose of this utility model is to provide a kind of hot stamping die for Mechanics Performance Testing, by cooling duct and temperature acquisition system at punch and matrix privileged site design straight-line, studies the impact of cooling uniformity on plate tissue and mechanical property.

For achieving the above object, the utility model adopts following technical scheme:

A kind of hot stamping die for Mechanics Performance Testing, comprise punch, punch fixture and punch base, die, die fixture and die base, straight-line cooling pipe and temperature thermocouple, described punch is installed on the punch fixture and with the punch base and fixes, punch is provided with punch water inlet and punch delivery port, the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out punch by cooling pipe from the punch delivery port via the punch water inlet, completes a cool cycles; Described die is installed on the die fixture and with the die base and fixes, die is provided with die water inlet and die delivery port, the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out die by cooling pipe from the die delivery port via the die water inlet, completes a cool cycles; Described temperature thermocouple is parallel to be placed under punch and die flange and profile.

Described temperature thermocouple is used K type thermocouple, and apart from profile 5mm place, described temperature thermocouple diameter range is 1 ~ 3mm, by external temperature acquisition and tape deck, completes the temperature monitoring to collection point.

Described straight-line cooling pipe is layed in punch base inside, reduces the heat fatigue of mould and press.

Compared with prior art, hot stamping die described in the utility model has following beneficial effect:

The utility model has adopted the cooling system of special structure, and convenient research cooling-water duct is on the inhomogeneity impact of sheet forming.On mould, diverse location is provided with the temperature acquisition point, is convenient to monitor the situation of change of plate environment temperature in the drop stamping process by external temperature collection and tape deck, and then optimizes hot stamping process parameters.Die size design is more reasonable, the different parts of part after drop stamping can be processed into to the A50 tensile sample of three standards, is convenient to study tissue and the mechanical property of part different parts after drop stamping.The punch base position has the thermal insulation board of subsidiary cooling duct, can improve the service life of hot stamping die and press, guarantees the stable of accessory size and performance.

The accompanying drawing explanation

The punch and matrix structural perspective that Fig. 1 is the related mould of the utility model.

Fig. 2 is the schematic diagram of the related punch of the utility model with cooling pipe.

The schematic diagram that Fig. 3 is the related die of the utility model and cooling pipe.

The schematic diagram that Fig. 4 is the related trapezoidal part of the utility model.

The specific embodiment

With reference to the accompanying drawings 1 ~ 4, in conjunction with specific embodiments the utility model is further described:

As shown in Figure 1 to Figure 3, a kind of hot stamping die for Mechanics Performance Testing, comprise punch 1, punch fixture 7 and punch base 4, die 2, die fixture 8 and die base 6, straight-line cooling pipe 3 and temperature thermocouple 5, described punch 1 is installed on punch fixture 7 and with punch base 4 and fixes, punch 1 is provided with punch water inlet 9 and punch delivery port 10, the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out punch 1 by cooling pipe 3 from punch delivery port 10 via punch water inlet 9, complete a cool cycles, described die 2 is installed on die fixture 8 and with die base 6 and fixes, die 2 is provided with die water inlet 11 and die delivery port 12, the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out die 2 by cooling pipe 3 from die delivery port 12 via die water inlet 11, completes a cool cycles, described temperature thermocouple 5 is parallel to be placed under punch 1 and die 2 flanges and profile.

Described temperature thermocouple 5 is used K type thermocouple, apart from profile 5mm place, described temperature thermocouple 5 diameter ranges are 1 ~ 3mm, by external temperature acquisition and tape deck, complete the temperature monitoring to collection point, and the temperature acquisition frequency of test point is in 1s, can gather 3500 times.

The built-in cooling system of described mould is according to the requirement of workpiece shape and cooling uniformity, with through type pipeline symmetrical laying arranged side by side at punch 1 and die 2 inside and punch base 4 places, and about 5 minutes, cooling water is passed into to cooling system inside before drop stamping starts, guarantee the stability of cooling water in the cooling system internal flow.During mold work, punch 1 is descending as for the steel plate contact fast, and now temperature thermocouple 5 starts thermometric, and the complete period is recorded the variation of steel plate environment temperature.

In order to study cooling pipe 3 to the inhomogeneity impact of sheet forming, can be corresponding close the one or more cooling ducts in punch 1 and die 2.

Described punch base 4 places are equipped with cooling duct 3, purpose is in order to reduce the heat fatigue of mould and press, make the temperature of mould and press keep constant, extend on the one hand the service life of mould and press, guarantee on the other hand the stable of accessory size and performance after drop stamping.

Part schematic diagram after described drop stamping as shown in Figure 4, can be by mach method respectively from part top 14, part end 13 lines cut into the A50 tensile sample of three standards, be convenient to measure the mechanical property after 14 drop stampings of 13He top, part end by quasi-tensile test.

Claims (3)

1. the hot stamping die for Mechanics Performance Testing, it is characterized in that, comprise punch (1), punch fixture (7) and punch base (4), die (2), die fixture (8) and die base (6), straight-line cooling pipe (3) and temperature thermocouple (5), described punch (1) is installed on punch fixture (7) above and fixes with punch base (4), punch (1) is provided with punch water inlet (9) and punch delivery port (10), the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out punch (1) by cooling pipe (3) from punch delivery port (10) via punch water inlet (9), complete a cool cycles, described die (2) is installed on die fixture (8) above and fixes with die base (6), die (2) is provided with die water inlet (11) and die delivery port (12), the mode be threaded connection is connected by plastic pipe with cooling water channel, form unobstructed cooling circuit, cooling water flows out die (2) by cooling pipe (3) from die delivery port (12) via die water inlet (11), completes a cool cycles, described temperature thermocouple (5) is parallel to be placed under punch (1) and die (2) flange and profile.
2. a kind of hot stamping die for Mechanics Performance Testing according to claim 1, it is characterized in that, described temperature thermocouple (5) is used K type thermocouple, apart from profile 5mm place, described temperature thermocouple (5) diameter range is 1 ~ 3mm, by external temperature acquisition and tape deck, completes the temperature monitoring to collection point.
3. a kind of hot stamping die for Mechanics Performance Testing according to claim 1, is characterized in that, described straight-line cooling pipe (3) is layed in punch base (4) inside, reduces the heat fatigue of mould and press.
CN 201320397843 2013-07-05 2013-07-05 Hot stamping die for mechanical performance testing CN203356396U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320397843 CN203356396U (en) 2013-07-05 2013-07-05 Hot stamping die for mechanical performance testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320397843 CN203356396U (en) 2013-07-05 2013-07-05 Hot stamping die for mechanical performance testing

Publications (1)

Publication Number Publication Date
CN203356396U true CN203356396U (en) 2013-12-25

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CN 201320397843 CN203356396U (en) 2013-07-05 2013-07-05 Hot stamping die for mechanical performance testing

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001811A (en) * 2014-06-13 2014-08-27 沈阳飞机工业(集团)有限公司 Thermal forming die for TC4 titanium alloy angular thin-walled part and forming method
CN105598282A (en) * 2015-12-30 2016-05-25 吉林大学 Hot forming punching device of automobile energy absorbing structure and punching method
CN109985968A (en) * 2017-12-29 2019-07-09 明信汽车科技株式会社 Thermoprinting die device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001811A (en) * 2014-06-13 2014-08-27 沈阳飞机工业(集团)有限公司 Thermal forming die for TC4 titanium alloy angular thin-walled part and forming method
CN104001811B (en) * 2014-06-13 2016-01-20 沈阳飞机工业(集团)有限公司 A kind of TC4 titanium alloy dihedral thin-walled parts hot forming tool and forming method
CN105598282A (en) * 2015-12-30 2016-05-25 吉林大学 Hot forming punching device of automobile energy absorbing structure and punching method
CN109985968A (en) * 2017-12-29 2019-07-09 明信汽车科技株式会社 Thermoprinting die device

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131225

Termination date: 20140705