基于Dynaform模拟冲压工艺对17%Cr超纯铁素体不锈钢表面<br/>起皱的影响<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.08.031

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Abstract The influence of equivalent strain and reduction ratio of stamping process on surface ridging of 17%Cr ultra-pure ferrite stainless steel were studied by combination of Dynaform software and experiment vertification. The results showed that stamping ridging of 17% Cr ultra-pure ferrite stainless steel was not generated at the initial stage, it was generated until a certain degree of deep drawing. The improvement ridging effect of 17%Cr ultra-pure ferrite stainless steel was not obvious, under the model of constant speed and acceleration speed for stamping process from 10-40 mm/min. Based on Dynaform finite element analysis, the improvement blank-holder force could enhance reduction ratio of deep drawing, which has no obvious effect on the equivalent strain. The reduction ratio and equivalent strain on cross section area was slightly different, and the value of reduction ratio was ranked in decreasing order: 45°＜0°＜90°, while the rule is opposite for equivalent strain. In addition, the intermediate annealing process can obviously improve the inside ridging of deep drawing parts when first drawing depth below the critical ridging in deep drawing depth, while the effect was limited for outside ridging.

Key words： 17%Cr Dynaform ridging constant speed mode equivalent strain

Published: 02 May 2018

CLC number:

TG142

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	Articles by authors
	ZHANG Yuan
	LI Jingyuan
	FANG Zhi
	CHEN Yulai

Cite this article:

ZHANG Yuan,LI Jingyuan,FANG Zhi, et al. Influence of Stamping Process by Dynaform Simulation on the Surface Ridging of 17%Cr Ultra-pure Ferritic Stainless Steel[J]. Materials Reports, 2017, 31(8): 156-161.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.08.031 OR http://www.mater-rep.com/EN/Y2017/V31/I8/156

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