Transactions of Materials and Heat Treatment

Title：Drawing limit property of sheet metal

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ClassificationCode：TG386.3

year,vol(issue):pagenumber：2020,45(1):73-79

Abstract：

The drawing limit property experiment of sheet metal was conducted on 6300 kN hydraulic press by a self-designed die structure. Then, the drawing limit height and initial cracking position with different materials, different thicknesses and different steel grades were obtained respectively, and the material limit properties and cracking positions under different processes were studied. The results show that different materials have influence on the drawing limit height and the initial cracking position of material, the drawing limit height decreases with the increasing of material strength, the drawing cracking position of DC01 steel occurs at the root of hemisphere, and the drawing cracking position of DP series high-strength steel occurs in the upper part of hemisphere. However, the drawing limit property of the same material produced by Baosteel and Tangsteel is similar, and the thickness only affects the drawing limit height of material and has little influence on the initial cracking position of material. Furthermore, the drawing limit property and cracking position of DC01 steel under different processes are quite different, but the influence on DP590 high-strength steel is relatively small.

Funds：

柳州柳东新区科学研究与技术开发计划项目（柳东科攻20170204）

作者简介：聂昕（1982-），男，博士，助理研究员 E-mail：niexinpiero@163.com

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