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Method for producing pressure-hardened metal parts

A metal part and pressure technology, applied in the field of motor vehicles, can solve the problems of impossible realization of part of the structure, difficulty in precise shaping of parts, increase in manufacturing cost, etc., and achieve the effects of simple manufacturing, flexible setting and low cost.

Inactive Publication Date: 2016-02-24
THYSSENKRUPP STEEL EURO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly increases the manufacturing costs of such components
Through the grooves in the tool, deformations are caused in the part, so that precise shaping of the part is difficult and some structures are not even possible with this method

Method used

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  • Method for producing pressure-hardened metal parts
  • Method for producing pressure-hardened metal parts
  • Method for producing pressure-hardened metal parts

Examples

Experimental program
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Embodiment Construction

[0039] Figures 1a to 1c One embodiment of the method of the invention is shown. Figure 1a A sheet metal 2 is shown, the wall thickness of which is reduced in partial regions 4 . On the sheet metal 2 , the reduction of the wall thickness is achieved by stamping 6 on the top side 8 of the sheet metal 2 . The sheet metal 2 thus has a bead 10 on its top side 8 . The sheet metal 2 consists of steel or alloy steel, preferably manganese-boron steel, in particular 22MnB5 steel. In the sheet material 2, the punched part 6 is processed by using a punching roll machine, for example. Figure 1b A tool 12 for press hardening is shown with an upper tool 14 and a lower tool 16 . The inner surface 18 of the upper tool 14 and the inner surface 20 of the lower tool 16 are adapted to the contour of the part to be produced. To manufacture part 22, upper tool 14 and lower tool 16 are driven apart from each other. The sheet 2 is then positioned between the upper tool 14 and the lower tool 16...

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Abstract

The invention relates to a method for producing a press-hardened metal part, in which method a sheet (2) or a semi-finished product (30, 40, 50, 60) is press-hardened in a forming tool (12), wherein, The sheet ( 2 ) or semi-finished product ( 30 , 40 , 50 , 60 ) has partial regions ( 4 , 36 ) of reduced wall thickness, and the partial regions ( 4 , 36 ) of reduced wall thickness have not been press hardened. The invention also relates to a press-hardened metal part made of steel or alloy steel, in particular for motor vehicles, preferably produced by the method according to the invention, which metal part has not been press-hardened in at least one partial region (4, 36) , wherein at least one non-press-hardened partial region (4, 36) has a reduced wall thickness compared to the press-hardened partial region.

Description

technical field [0001] The invention relates to a method for producing a press-hardened metal part made of steel or steel alloy, in which method a sheet or semi-finished product is press-hardened in a forming tool. The invention also relates to a press-hardened metal part made of steel or alloy steel, in particular for a motor vehicle, which is not press-hardened in at least one partial region. Background technique [0002] In order to manufacture the body or shell of a motor vehicle, metal parts usually need to have a high degree of hardness. In metal parts made of steel or alloy steel, high strength and hardness can be achieved by pressure hardening. In such a method, the sheet or semi-finished product is heat deformed in a tool at a temperature above the austenitic temperature and then cooled suddenly in the same tool. The austenitic structure of the metal component formed during hot deformation is transformed into a high-strength and hard martensitic structure by a rap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D19/00B21D22/02C21D1/18C21D1/673
CPCB21D22/022C21D1/673C21D2221/00Y10T428/12389
Inventor 弗朗茨-约瑟夫·伦策萨沙·西科拉安德列亚斯·乌尔里希斯洛塔尔·帕特博格
Owner THYSSENKRUPP STEEL EURO AG
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