摘要
对镁合金壳体零件设计了两种类型的浇注系统,运用有限元模拟软件对两种设计的充型和凝固过程进行模拟,通过观察流场和温度场的分布情况,预测充型时间、凝固时间以及铸件中可能存在的缩孔及气孔缺陷的分布与尺寸,提出优化的浇注系统设计。结果表明:在浇注温度655℃、模具初始温度200℃、冲头压射速度2.4m/s的条件下,阶梯分型面设计采用的浇注系统优于平直分型面设计的浇注系统。
Two pouring systems are designed for magnesium die casting, The filling and solidifying process is simulated with finite element software. According to fluid and temperature field of molten metal to forecast filling time, solidification time and the distribution and size of macro and gas porosity that may exist in the castings, the better pouting system is found. The result shows under the condition of ponring temperature 655℃, mold initial temperature 200℃, plunger injection speed 2.4 m/s, the design of ladder parting surface is better than the one of straight parting surface.
出处
《轻合金加工技术》
CAS
北大核心
2008年第7期14-18,共5页
Light Alloy Fabrication Technology
基金
黑龙江省自然科学基金项目(E2006018)
黑龙江省科学技术计划项目(GC07A202)
关键词
镁合金
优化浇注系统
数值模拟
压铸
magnesium alloy
optimize ponring system
numerical simulation
die casting
