Zn-5Al-0.5Ti-0.2Cr锌合金机械壳体的铸造工艺优化研究  

Study on Casting Process Optimization of Zn-5Al-0.5Ti-0.2Cr Zinc Alloy Mechanical Shell

作　　者：王波[1] 许晓东[2] 张崎静[1] 赵东宏[1] WANG Bo;XU Xiaodong;ZHANG Qijing;ZHAO Donghong(Yangzhou Polytechnic Institute,Yangzhou 225127,China;College of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州工业职业技术学院,江苏扬州225127 [2]扬州大学机械工程学院,江苏扬州225127

出　　处：《热加工工艺》2020年第11期67-69,73,共4页Hot Working Technology

基　　金：江苏省教育科学“十二五”规划2015年度职成教重点资助课题(B-a/2015/03/008);机械设计与制造行业骨干专业项目(XM-01);扬州市校合作资金项目(YZ2016271);扬州工业职业技术学院重点科研课题(2016xjzk004)。

摘　　要：采用不同的浇注温度和充型压力对Zn-5Al-0.5Ti-0.2Cr锌合金机械壳体进行了铸造,并进行了力学性能的测试、比较和分析。结果表明:随浇注温度、充型压力的增加,抗拉强度先增大后减小,断后伸长率的变化幅度较小,变化趋势为先减小后增大。当浇注温度为480℃和充型压力40 kPa时,试样的抗拉强度最大,断后伸长率最小。机械壳体的铸造工艺参数优选为:浇注温度480℃,充型压力40 kPa。The mechanical shell of Zn-5Al-0.5Ti-0.2Cr zinc alloy was cast by using different pouring temperature and filling pressure, and the mechanical properties were tested, compared and analyzed. The results show that with the increase of pouring temperature and filling pressure, the tensile strength first increases and then decreases, and the change range of the elongation is small. The trend of change is first decreases and then increases. When the pouring temperature is 480 ℃ and the filling pressure is 40 kPa, the tensile strength of the sample is the highest and the elongation after break is the smallest. The optimum casting process parameters of the mechanical shell are pouring temperature of 480 ℃ and filling pressure of 40 kPa.

关 键 词：机械壳体 锌合金 力学性能 铸造 浇注温度 充型压力 

分 类 号：TG292[金属学及工艺—铸造] TG146.2[一般工业技术—材料科学与工程]