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Hot stamping die with cooling water channels and manufacturing technology thereof

A technology of hot stamping dies and cooling water channels, applied in the field of hot stamping dies, can solve the problems of inaccurate positioning of parts, and achieve the effects of simple processing, low cost and improved cooling efficiency

Active Publication Date: 2016-05-04
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems of inaccurate parts positioning in the prior art, and provide a hot stamping die with cooling channels and its manufacturing process with accurate parts positioning

Method used

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  • Hot stamping die with cooling water channels and manufacturing technology thereof
  • Hot stamping die with cooling water channels and manufacturing technology thereof
  • Hot stamping die with cooling water channels and manufacturing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see Figure 1 to Figure 3 , a hot stamping die with a cooling water channel, including a hot stamping die body 1 and a cooling water channel disposed inside thereof, the cooling water channels include No. 1 cooling water channel 11, No. 2 cooling water channel 12, and No. 3 cooling water channel 13 parallel to each other , the middle part of the hot stamping die body 1 is provided with a pin hole insert 2, the transverse center line 23 of the pin hole insert 2 coincides with the center line 14 of the No. The No. 1 cooling water channel 11 intersects, and the other side of the pin hole insert 2 intersects with the No. 3 cooling water channel 13 .

[0047] According to the above scheme, a manufacturing process of a hot stamping die with a cooling water channel, the manufacturing process includes the following steps in sequence: welding process: first apply the brazing material evenly on the surface of the pin hole insert 2, and then put the pin hole insert 2 Install it i...

Embodiment 2

[0049] Basic content is the same as embodiment 1, the difference is:

[0050] see Figure 1 to Figure 3 , the No. 1 cooling water channel 11, the No. 2 cooling water channel 12, and the No. 3 cooling water channel 13 are arranged inside the hot stamping die body 1, and one end of the No. 1 cooling water channel 11, the No. 2 cooling water channel 12, and the No. 3 cooling water channel 13 They are all located on the No. 1 end face 15 of the hot stamping die body 1, and the other ends of the No. 1 cooling channel 11, the No. 2 cooling channel 12, and the No. 3 cooling channel 13 are all located on the No. 2 end face 16 of the hot stamping die body 1. The No. 1 end face 16 and the No. 1 end face 15 are parallel to each other, and the No. 1 cooling water channel 11, No. 2 cooling water channel 12, and No. 3 cooling water channel 13 are all perpendicular to the No. 1 end face 15; the pin hole insert 2 is a cylindrical structure , the pin hole insert 2 includes an insert 21 and a ...

Embodiment 3

[0052] Basic content is the same as embodiment 1, the difference is:

[0053] see Figure 1 to Figure 3 , the No. 1 cooling water channel 11, the No. 2 cooling water channel 12, and the No. 3 cooling water channel 13 are arranged inside the hot stamping die body 1, and one end of the No. 1 cooling water channel 11, the No. 2 cooling water channel 12, and the No. 3 cooling water channel 13 They are all located on the No. 1 end face 15 of the hot stamping die body 1, and the other ends of the No. 1 cooling channel 11, the No. 2 cooling channel 12, and the No. 3 cooling channel 13 are all located on the No. 2 end face 16 of the hot stamping die body 1. The No. 1 end face 16 and the No. 1 end face 15 are parallel to each other, and the No. 1 cooling water channel 11, No. 2 cooling water channel 12, and No. 3 cooling water channel 13 are all perpendicular to the No. 1 end face 15; the pin hole insert 2 is a cylindrical structure , the pin hole insert 2 includes an insert 21 and a ...

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Abstract

The invention provides a hot stamping die with cooling water channels. The hot stamping die comprises a hot stamping die body and the cooling water channels arranged inside the hot stamping die body. The cooling water channels comprise the first cooling water channel, the second cooling water channel and the third cooling water channel which are parallel to one another. A pin hole insert is arranged in the middle of the hot stamping die body. The transverse center line of the pin hole insert coincides with the center line of the second cooling water channel. One side of the pin hole insert intersects with the first cooling water channel, and the other side of the pin hole insert intersects with the third cooling water channel. In the manufacturing process, the surface of the pin hole insert is evenly coated with brazing filler metal at first, then the pin hole insert is installed in the hot stamping die body, then the hot stamping die body with the pin hole insert is placed into a vacuum brazing furnace, heated to reach 1180 DEG C and then cooled along with the furnace, and the hot stamping die is quenched and tempered in sequence. According to the hot stamping die, part positioning is accurate, and the cooling speed is high.

Description

technical field [0001] The invention relates to a hot stamping die, in particular to a hot stamping die with a cooling water channel and its manufacturing process, which is mainly suitable for improving the positioning accuracy of parts. Background technique [0002] Hot stamping forming technology is a very popular technology at present. The strength of stamping parts manufactured by this technology can reach 1500MPa. Due to its light weight and high strength, it has become an important way to reduce weight and enhance crash safety performance of automobiles. One of the keys to hot stamping is to ensure the transformation of the plate from austenite to martensite and the uniformity of structure distribution. Therefore, it is necessary to ensure that the cooling capacity of the hot stamping die is strong and the uniformity is good, that is, to ensure that the hot stamping die contains uniform Distributed cooling channels. Usually the diameter of the positioning pin hole is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/16B21D37/20
CPCB21D37/10B21D37/16B21D37/20
Inventor 张春宾李少兵柳桂林王祖勇戴勇
Owner DONGFENG COMML VEHICLE CO LTD