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	快速充型对镁合金压铸件质量的影响
	熊守美 ; 袁建路 ; 刘艳改 ; 刘文辉 ; 柳百成 ; XIONG Shou-mei ; YUAN Jian-lu ; LIU Yan-gai ; LIU Wen-hui ; LIU Bai-cheng
	2010-06-08 ; 2010-06-08
关键词	快速充型速度 起速位置 镁合金压铸 外观质量 性能 velocity of high-speed injection stage start position of high-speed injection stage magnesium alloy die casting surface quality property TG249.2
其他题名	Influence of the velocity and start position of high-speed injection stage on the quality of magnesium alloy die casting
中文摘要	针对汽车发动机缸盖罩盖零件,采用压力传感器,通过对铸件的表观质量进行评定及铸件密度和抗拉强度的测定,系统研究了镁合金压铸过程中快速充型速度和起速位置对型腔内压力变化和铸件质量的影响.结果表明:随着充型速度增加,镁合金铸件的表观质量显著改善,达到一定值后,这种趋势变化不明显;铸件的表面缺陷随着起速位置的增大先增多后减少;铸件的强度与密度均随着充型速度和起速位置的增大先增大后减小,这与充型速度与起速位置对铸件型腔内压力的影响规律一致;当充型速度为70 m/s,起速位置为210 mm时,镁合金压铸件的质量与性能最佳.; A magnesium cylinder head cover die casting was produced to study systemically the influence of the velocity and start position of high-speed injection stage on the pressures in the mold and the quality of magnesium alloy die casting using pressure sensor.The surface quality,relative density and tensile strength of the component were investigated.The results show that the surface quality of magnesium alloy die casting improved greatly with the increase of the velocity of high-speed injection stage in a certain range.With the increase of start position of high-speed injection stage,the surface defects first increased and then decreased.The same law is for the tensile strength and the density of the casting with the increase of the velocity and start position of high-speed injection stage.This corresponds with the influence of the velocity and start position of high-speed injection stage on the pressures in the mold of the castings.Magnesium alloy die casting prepared in the experiment has the best quality and property when the velocity and start position of high-speed injection stage are 70 m/s and 210 mm respectively.; “清华-东洋镁铝合金成形技术研究开发中心”资助项目(0202J02); 国家自然科学基金资助项目(50275081)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/48029]
专题	清华大学
推荐引用方式 GB/T 7714	熊守美,袁建路,刘艳改,等. 快速充型对镁合金压铸件质量的影响[J],2010, 2010.
APA	熊守美.,袁建路.,刘艳改.,刘文辉.,柳百成.,...&LIU Bai-cheng.(2010).快速充型对镁合金压铸件质量的影响..
MLA	熊守美,et al."快速充型对镁合金压铸件质量的影响".(2010).

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