造币材料CuAl5Zn5Sn1铸锭表面夹渣控制

Surface Inclusions Control of CuAl5Zn5Sn1 Ingot for Coin Material

铜合金CuAl5Zn5Sn1因其强度高,耐蚀性、色泽性、加工性能好而作为一种新型造币材料。铸锭研制时遇到的主要难题是表面夹渣控制。通过分析铸锭表面夹渣产生的原因,从铸造方式、除渣方法、铸造工艺技术等方面进行了改进,表面夹渣问题得到解决,取得了良好的效果。

CuAl5Zn5Sn1 copper alloy is used as a new kind of coin material because of its high strength, good corrosion resistance, color and processing behaviour. The main problem encountered in the manufacture of ingot was control of the ingot surface slag inclusions. Through analyzing the cause, it was well solved through the improvements of melt slag removal method, casting process and technology as well as pouring mode and so on.