减速机壳体消失模铸造的质量控制
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摘要
为降低减速机壳体重皮、渗铁和夹杂缺陷,根据消失模铸造原理和减速机壳体结构特点,对缺陷产生的原因进行分析。结果表明,通过选取合理的浇冒口形式、优化补涂抹砂方式和选取合理熟化时间及浇注温度等措施,可将减速机壳体综合废品率控制在7%以内。通过局部结构优化、优化保压工艺,可有效解决减速机壳体漏气问题。
In order to reduce the double skin, iron penetration and inclusion defects of reducer shell, according to the principle of lost foam casting and the structural characteristics of reducer shell, the causes of defects were analyzed. The results show that the comprehensive reject rate of reducer shell can be controlled within 7% by selecting reasonable pouring riser form, optimizing sand filling method, selecting reasonable ripening time and pouring temperature and other measures.The problem of air leakage in reducer shell can be effectively solved by optimizing local structure and pressure-maintaining process.
In order to reduce the double skin, iron penetration and inclusion defects of reducer shell, according to the principle of lost foam casting and the structural characteristics of reducer shell, the causes of defects were analyzed. The results show that the comprehensive reject rate of reducer shell can be controlled within 7% by selecting reasonable pouring riser form, optimizing sand filling method, selecting reasonable ripening time and pouring temperature and other measures.The problem of air leakage in reducer shell can be effectively solved by optimizing local structure and pressure-maintaining process.
引文
[1]刘俞铭.消失模铸造新技术与工艺设计、设备(模具)选型及缺陷分析防治[M].北京:中国知识出版社,2005.
[2]陈国桢.铸件缺陷与对策手册[M].北京:中国机械出版社,1996.
[3]中国机械工程学会铸造分会.铸造手册第一卷铸铁(第二版)[M].北京:机械工业出版社,2001.
[2]陈国桢.铸件缺陷与对策手册[M].北京:中国机械出版社,1996.
[3]中国机械工程学会铸造分会.铸造手册第一卷铸铁(第二版)[M].北京:机械工业出版社,2001.