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Steel forming method and forming component

A technology for forming components and steel materials, which is applied to vehicle parts, transportation and packaging, and can solve problems such as high energy consumption, high cost, and low production efficiency

Active Publication Date: 2016-06-15
EASYFORMING STEEL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heating step at 500-700°C in this document causes recovery or recrystallization of the deformed TWIP steel. Although it can completely eliminate the residual stress in the component and solve the problem of delayed cracking, this method consumes a lot of energy and is Two sets of molds are required to complete the forming and correction work respectively, with high cost and low production efficiency

Method used

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Embodiment Construction

[0021] The inventors have found through research that deformation twins can be formed in the deformation process of TWIP steels, and some TWIP steels also have austenite transformation into martensite, and the formation of twins or the formation of martensite provides a guarantee for delayed cracking. Convenience channels, so TWIP steel has such a large risk of delayed cracking. Therefore, reducing the number or even orders of magnitude of twins in TWIP steel during forming and simultaneously inhibiting the formation of martensite provides a way to solve the problem of delayed cracking.

[0022] The performance and plastic deformation mechanism of steel materials based on austenite such as TWIP steel mainly depend on their stacking fault energy (SFE: Stacking Fault Energy). At room temperature, the stacking fault energy of high-manganese TWIP steel is low, and twins will be formed during plastic deformation. The stacking fault energy is closely related to temperature. At a hi...

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Abstract

The invention relates to a steel forming method and forming component. The steel forming method comprises steps as follows: (A) steel for forming is provided; (B) the steel is heated to the temperature of 150-500 DEG C; (C) heated steel is conveyed to steel forming equipment; (D) the steel is formed in the temperature range of 100-450 DEG C in the steel forming equipment. The steel forming method and forming component can reduce the number and even the order of magnitude of twin crystals formed during formation of the steel, particularly TWIP (twinning induced plasticity) steel and can inhibit formation of martensite, so that the technical scheme for solving the delayed cracking problem at the lower cost and under the lower energy consumption is provided.

Description

technical field [0001] The invention relates to a steel forming method and a forming component thereof. Background technique [0002] Lightweight and safety are the focus of research and development in the automotive industry in recent years. The use of high-strength steel plates can reduce the thickness of the steel plate without sacrificing the safety of the collision, so as to achieve the purpose of reducing the weight of the car. At the same time, the elongation of the steel plate, on the one hand, determines whether the steel plate can be formed into a more complex, beautiful and optimally engineered part shape, and on the other hand, determines the How much energy absorption capacity it has. Therefore, high strength and high elongation are important indicators for the development of automotive steel sheets. [0003] TWIP (Twinning Induced Plasticity, twin induced plasticity) steel is a high manganese full austenitic steel with twinning induced plasticity as the main...

Claims

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Application Information

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IPC IPC(8): B21D53/88C22C38/02C22C38/04C22C38/06C22C38/12
CPCB21D53/88C22C38/02C22C38/04C22C38/06C22C38/12B21D35/00
Inventor 熊小川
Owner EASYFORMING STEEL TECH CO LTD
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