铝合金变速箱壳体低压铸造工艺优化  

Optimization of Low-Pressure Casting Process for Aluminum Alloy Gearbox Case

作　　者：王亮 刘中令 WANG Liang;LIU Zhong-ling(Luoyang Rail Transit Group Co.,Ltd.,Luoyang 471023,Henan,China;ZRIME Gearing Technology Co.,Zhengzhou 450000,Henan,China)

机构地区：[1]洛阳市轨道交通集团有限责任公司,河南洛阳471023 [2]郑机所(郑州)传动科技有限公司,河南郑州450000

出　　处：《铸造》2025年第2期203-210,共8页Foundry

摘　　要：对铸件某型号变速箱壳体原低压铸造工艺的充型、凝固过程进行数值模拟,观察铸件易产生卷气、缩松等缺陷部位,并分析原因。根据模拟分析结果提出提高浇注温度与浇注速度、增大顶部冒口尺寸、增加冷铁数量的优化措施。通过对优化后的铸造工艺进行数值模拟、生产试制和检验,验证了优化措施的可行性,有效避免缺陷的产生,实现质量提升目标。The filling and solidification process of a certain type of gearbox housing in the original low pressure casting process was numerically simulated,and the defects such as gas trapping and dispersed shrinkage were observed and the reasons were analyzed.According to the results of simulation analysis,the optimization measures of increasing pouring temperature and pouring speed,increasing the size of top riser and increasing the number of chill are put forward.Through the numerical simulation,trial production and inspection of the optimized casting process,the feasibility of the optimization measures was verified,the defects were effectively avoided,and the quality improvement goal was achieved.

关 键 词：变速箱壳体 低压铸造 数值模拟 工艺优化 

分 类 号：TG146.21[一般工业技术—材料科学与工程]