ZL205A支架铸造工艺研究
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摘要
ZL205A合金具有良好的综合力学性能,已逐渐广泛应用在航天、航空、核工业等重要领域。但ZL205A合金铸造性能较差,易产生偏析、缩松和裂纹等铸造缺陷。支架属薄壁框架结构,金属液充型时易产生气孔、夹杂等缺陷,铸件内在质量要求高,铸造难度大。通过选择合适的铸造方法,设计合理的浇注系统、过滤系统和浇注温度,采取合理的熔炼和热处理工艺,使铸造生产的铸件完全满足设计要求,合格率100%.
ZL205A alloy has been widely used in aerospace, aviation, nuclear industry and other fields for its good comprehensive mechanical properties. However, its casting performance is poor, which is easy to produce segregation, porosity and crack and other casting defects. Casting frame, with thin wall frame structure, is easy to generate pores, inclusions and other defects in the metal filling process. By choosing suitable casting methods, reasonable design of gating system, filtering system and pouring temperature and taking reasonable melting and heat treatment process, the foundry casting production fully meets the design requirements. The qualified rate reaches 100%.
ZL205A alloy has been widely used in aerospace, aviation, nuclear industry and other fields for its good comprehensive mechanical properties. However, its casting performance is poor, which is easy to produce segregation, porosity and crack and other casting defects. Casting frame, with thin wall frame structure, is easy to generate pores, inclusions and other defects in the metal filling process. By choosing suitable casting methods, reasonable design of gating system, filtering system and pouring temperature and taking reasonable melting and heat treatment process, the foundry casting production fully meets the design requirements. The qualified rate reaches 100%.
引文
[1]中国机械工程学会铸造专业学会.铸造手册:第四卷:造型材料[M].第二版.北京:机械工业出版社,2003:164.
[2]王继昌.ZL205A合金大型整体舱段低压铸造及典型缺陷研究[D].哈尔滨:哈尔滨工业大学,2009.
[3]中国机械工程学会铸造专业学会.铸造手册:第三卷:铸造非铁合金[M].第二版.北京:机械工业出版社,2003:249.
[4]李晨希.铸造工艺及工装设计[M].北京:化学工业出版社,2014:132.
[2]王继昌.ZL205A合金大型整体舱段低压铸造及典型缺陷研究[D].哈尔滨:哈尔滨工业大学,2009.
[3]中国机械工程学会铸造专业学会.铸造手册:第三卷:铸造非铁合金[M].第二版.北京:机械工业出版社,2003:249.
[4]李晨希.铸造工艺及工装设计[M].北京:化学工业出版社,2014:132.