薄壁白铜管坯电磁连铸

来源期刊：中国有色金属学报2008年第3期

论文作者：李新涛 郭照相 赵祥伟 李廷举

文章页码：439 - 439

关键词：白铜合金；管坯；连铸；旋转电磁场；

Key words：cupronickel alloy; tube billets; continuous casting; electromagnetic field

摘    要：

Abstract: A new method was proposed by imposing a rotating electromagnetic field during horizontal continuous casting of thin-walled cupronickel tube billets. The effects of electromagnetic field on the surface quality, solidification structure and mechanical properties were investigated experimentally by use of BFe10-1-1 alloy. The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

基金信息：国家自然科学基金资助项目
中国博士后科学基金资助项目
江苏省博士后科研基金资助项目