热镀锌铁合金钢板冲压成形过程表面特性研究  

Surface Evolution of Zinc-coated Galvanized Steel in the Stamping Process

作　　者：鲍平[1] 蒋浩民[1] 陈新平[1] 

机构地区：[1]宝山钢铁股份有限公司技术中心,上海201900

出　　处：《锻压装备与制造技术》2007年第3期73-74,共2页China Metalforming Equipment & Manufacturing Technology

摘　　要：热镀锌铁合金钢板在冲压过程中经常出现锌层的粉化和剥落等质量缺陷,加大了质量控制的难度。本文分析了不同预变形条件下热镀锌铁合金镀层的表面形貌和断面金相的演化,同时研究了正压力对摩擦系数的影响。结果表明:锌铁合金层镀层裂纹的萌生和发展是导致锌层粉化的根本原因。随着正压力的增大,锌铁合金钢板的摩擦系数明显降低,但当压力较大时降幅明显放缓。The surface and microstructure evolution of zinc coating has been analyzed under the different prestrains with the effect of contact pressure on the frictional coefficient studied.It can be seen that the powdering of sheet steel is mainly caused by the occurrence and development of cracks in zinc-iron coating.With the increase of contact pressure, the frictional coefficient has been obviously decreased.When the contact pressure is relatively higher,the frictional coefficient will decrease slowly.

关 键 词：材料表面与界面 表面特性 热镀锌铁合金钢板 冲压成形 

分 类 号：TG386[金属学及工艺—金属压力加工]