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Hot forming method and hot forming mould

A thermoforming and mold technology, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of no smooth transition, prone to fracture, large performance differences, etc., to save production costs, improve design space, and simple structure Effect

Active Publication Date: 2012-09-19
HANGZHOU BRANCH ZHEJIANG GEELY AUTOMOBILE RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the properties of the two sides of the weld of the parts obtained by this method are very different, there is no smooth transition, and fracture is easy to occur

Method used

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  • Hot forming method and hot forming mould
  • Hot forming method and hot forming mould

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Embodiment Construction

[0020] The content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] figure 1 It is a structural schematic diagram of an embodiment of the thermoforming mold according to the present invention. The cooling rate of the thermoforming mold is different through the arrangement of different cooling pipe densities in different regions. Such as figure 1 As shown, the thermoforming mold includes a mold base 1 , and a plurality of parallel longitudinal cooling ducts 2 are arranged inside the mold base 1 . In this figure, the cooling pipes in the three areas A, B, and C in the transverse direction of the thermoforming mold are arranged from dense to sparse, so that the three areas corresponding to the thermoforming mold A, B, and C can have different cooling rates. Wherein, the cooling rate in area A may be 75-90°C / s, the cooling rate in area B may be 35-55°C / s, and the cooling rate in area C ma...

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Abstract

The invention discloses a hot forming method and a hot forming mould. The hot forming method includes providing the hot forming mould which is provided at least with a first portion and a second portion long the horizontal direction; guiding a heated austenitized steel plate into the hot forming mould to be subjected to forming process; cooling the first portion of the hot forming mould at a first cooling rate and cooling the second portion of the hot forming mould at a second cooling rate, wherein the first cooling rate is different from the second cooling rate, accordingly, an integrally formed component with changed transverse strength is formed in the hot forming mould. The structure of the hot forming mould is simple, components with diversified originations and different strength distribution can be obtained through simple process, performances of different positions of the components can have great differences, so that requirements of different occasions can be satisfied. Due to the hot forming method, not only the design space of steel plate materials can be improved, but also parameter setting is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to a thermoforming technology, in particular to a thermoforming method and a thermoforming mold. Background technique [0002] Hot forming technology is a latest manufacturing process that combines traditional hot forging technology with cold stamping technology, and is specially used to form high-strength stamping parts, which can form auto parts with a strength of up to 1500MPa. At present, thermoforming technology has become the focus of attention of many automobile manufacturers in the world. The hot forming technology is different from the traditional cold stamping forming process. The cold stamping forming is mostly carried out at room temperature, while in the hot forming technology, the sheet is stamped and formed in a red hot state, that is, the blanked steel plate is sent into the Heating in the heating device to make it austenitized, and then sending it to the hot forming mold with a cooling system inside for stamping....

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/16
Inventor 马宁门永新马芳武赵福全
Owner HANGZHOU BRANCH ZHEJIANG GEELY AUTOMOBILE RES INST
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