摘要
分析转向器阀壳体的结构,根据低压铸造的工艺要求设计了两种浇注系统并对其进行了数值模拟,分析缺陷产生情况后选择较优方案并进行结构改进。采用Taguchi正交DOE方法和信噪比分析,研究充型速度、浇注温度、上模具预热温度和下模具预热温度对铸件缩松缩孔的影响。试验结果表明,当充型速度35 mm/s,浇注温度690℃,上模具预热温度370℃,下模具预热温度340℃时,转向器阀壳体内部缩松缩孔铸造缺陷基本消除。
The structure of the valve shell of the steering gear was analyzed.According to the technological requirements of low pressure casting,two kinds of gating systems were designed,and their numerical simulation was carried out.After analyzing the defects,the better scheme was selected and the structure was improved.The effects of flling speed,pouring temperature,preheating temperature of upper die and preheating temperature of lower die on shrinkage porosity and porosity of casting were studied by using Taguchi orthogonal DOE method and SNR analysis.The results show that when the illing speed is 35 mm/s,the casting temperature is 690℃,the preheating temperature of the upper die is 370℃C,and the prcheating temperature of the lower die is 340℃,the casting defects of shrinkage cavity and porosity in the valve shell of the steering gear are basically eliminated.
作者
陶健
苏小平
康正阳
周大双
TAO Jian;SU Xiaoping;KANG Zhengyang;ZHOU Dashuang(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《铸造技术》
CAS
2021年第5期379-380,381,382,共4页
Foundry Technology
基金
江苏省高校自然科学研究课题(19KJB460005)。
关键词
数值模拟
浇注系统
DOE
信噪比分析
numerical simulation
gating system
DOE
signal to noise ratio analysis
