Transactions of Materials and Heat Treatment

Title：Experimental research on the effect of die hardness on the galling in sheet metal forming

Authors： CHEN Xin-ping1 HOU ying-ke2 JIANG Hao-min1 SUN Fang-zhong1 BAO Ping1 (1.Institute Baoshan Iron & Steel Co. Ltd. Shanghai 201900 2.School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200240)

Unit：

KeyWords： high strength steel galling die hardness

ClassificationCode：TG386.32

year,vol(issue):pagenumber：2008,33(2):31-33

Abstract：

A cup part with draw-beads was designed to simulate the galling in the forming of high strength steel.The average roughness(Ra) and the largest depth of scoring h were used to evaluate the galling.The experimental results show that Ra value and h value become larger with the increase of drawing times,and increase very fast in the initial and final stage of forming process.Meanwhile,with the decrease of surface hardness of die,Ra and h values increase.The lower the surface hardness, the more the galling defects.

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Reference：

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