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A357合金低压铸造过程及性能研究 被引量:12

Study on Process and Property of A357 Alloy Produced by Low Pressure Casting
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摘要 采用低压铸造方法对A357合金的充型过程以及铸件微观组织和力学性能进行了研究。结果表明:当充型压力低于30kPa时,随着充型压力增大可以得到表面质量较优的铸件;达到30kPa以上时,就出现粘砂、夹杂、气孔等缺陷。低压铸造有利于优化组织,提高铸件的力学性能。 The filling process, microstructure and mechanical properties of A357 alloy was studied by low pressure casting. The results indicate that, when the filling pressure is below 30kPa, casting surface quality can be better with the filling pressure increasing;when the filling pressure reaches over 30kPa, the sand fusion, inclusion, porosity, ere appears in the casting. Low pressure casting helps to optimize the microstructure and to improve the mechanical properties of the casting.
出处 《热加工工艺》 CSCD 北大核心 2007年第13期59-60,63,共3页 Hot Working Technology
基金 国家重大基础研究项目资助(5131902)
关键词 A357合金 低压铸造 微观组织 力学性能 充型压力 A357 alloy low pressure casting microstructure mechanical property filling pressure
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