LED用镁合金散热器压铸工艺的研究  

Research on Die Casting Process of Magnesium Alloy Radiator for LED

作　　者：宋东福[1] 戚文军[1] 王海艳[1] 黄正华[1] 

机构地区：[1]广州有色金属研究院金属加工与成型技术研究所,广东广州510650

出　　处：《铸造》2015年第5期403-408,共6页Foundry

基　　金：863计划项目(2013AA031001);广东省产学研结合项目(2012B090600051);广东省科技计划项目(2013B010102024)

摘　　要：采用正交试验方法优化镁合金散热器的压铸工艺,利用排水法、拉伸试验测试铸件的致密度和力学性能。结果表明:当快压射速度4 m/s、慢压射速度0.2 m/s、慢压射行程0.12 m、压射比压为84 MPa时,铸件性能最佳。快压射速度对铸件的外观评分、致密度和力学性能影响程度最大,其次是慢压射行程;慢压射速度对散热器底板的力学性能影响较大,而压射比压几乎无影响。快压射速度和慢压射速度的因素水平处于中间,慢压射行程为较低水平时,铸件的外观评分、力学性能均为最佳。The die-casting processes of magnesium alloy radiator were optimized by orthogonal test method.The density and mechanical properties of casting were measured through drainage method and tensile testing.The results show that the best casting performance is acquired when the fast injection speed is 4 m/s, slow injection speed is 0.2 m/s, slow injection stroke is 0.12 m, and injection pressure is 84 MPa. The fast injection speed has the most influence degree on casting appearance score, density and mechanical properties, and influence degree of the slow injection stroke is followed. The slow injection speed has greater influence on the mechanical properties of the base plate compared with radiating fins, and injection pressure almost has no impact on casting performance and properties. The density and mechanical properties of castings are the best when the fast injection speed and slow injection speed is middle level and slow injection stroke is low level.

关 键 词：镁合金散热器 压铸 工艺优化 

分 类 号：TG249.2[金属学及工艺—铸造]