Method for predicting edge forming limit of high-strength steel plate stamping part

A technology for stamping parts and high-strength steel plates, which is applied in the directions of measuring devices, strength characteristics, and testing material strength by applying a stable bending force. edge cracking effect

Pending Publication Date: 2021-10-26
SHOUGANG CORPORATION
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] This application provides a method for predicting the edge forming limit of high-strength steel stamping parts, which solves the technical problem that high-strength steel stamping parts are prone to edge cracking in the prior art

Method used

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  • Method for predicting edge forming limit of high-strength steel plate stamping part
  • Method for predicting edge forming limit of high-strength steel plate stamping part
  • Method for predicting edge forming limit of high-strength steel plate stamping part

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Embodiment Construction

[0036] The embodiment of the present application solves the technical problem that the high-strength steel stamping part is prone to edge cracking in the prior art by providing a method for predicting the forming limit of the edge part of the high-strength steel stamping part.

[0037] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0038] Such as figure 1 As shown in -8, the present application provides a method for predicting the edge forming limit of a high-strength steel stamping part, the method comprising the following steps:

[0039] Step 1. The deformation process of the part edge is divided into three deformation primitives: tensile deformation, bending deformation and stretch-bending compound deformation. Combined with the part forming process, the deformation primitives of the part are judged;

[0040] Step 2, the ultimate strain test of the deformation ele...

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Abstract

The invention discloses a method for predicting the edge forming limit of a high-strength steel plate stamping part, and the method comprises the following steps: judging a part deformation element in combination with a part forming process; carrying out deformation element limit strain testing; and obtaining the actual part edge deformation limit according to the actual part stamping deformation condition. According to the method for predicting the edge forming limit of the high-strength steel plate stamping part, the deformation element of the part is judged and tested, and then the deformation limit is obtained according to the actual stamping deformation condition of the part, so that the machining of the part does not exceed the deformation limit, the high-strength steel plate stamping part is prevented from being prone to edge cracking, and the yield of the part is improved.

Description

technical field [0001] The invention relates to the technical field of metal plastic processing, in particular to a method for predicting the edge forming limit of a high-strength steel plate stamping part. Background technique [0002] With the continuous improvement of automobile lightweight demand, the application of ultra-high-strength steel in auto parts is increasing. At present, Japan's advanced automobile OEMs have begun to use 1000MPa-level and above dual-phase cold-rolled automobile sheets to stamp B-pillars and other complex components. For parts, the increase in strength leads to a decrease in plasticity, and the quality problems after stamping, especially the problem of stamping edge cracks, are becoming more and more prominent. Since there are many factors affecting edge cracking and the fracture mechanism is complex, there is still no accurate and convenient method for predicting edge cracking in stamping, which leads to insufficient prediction in the early de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N3/08G01N3/02
CPCG01N3/20G01N3/08G01N3/02G01N2203/0023G01N2203/0682
Inventor 韩龙帅郑学斌韩赟邱木生阳锋徐海卫于孟王宝川孙鹏张郢胡开广张士杰王晓雄尼兴
Owner SHOUGANG CORPORATION
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