渗流铸造工艺对泡沫铝合金孔结构的影响  

Study on the Influence factors of Foam Aluminium Alloy Pore Structure in Infiltration Casting

作　　者：任建富[1] 王录才[1] 王芳[1] 

机构地区：[1]太原重型机械学院材料工程分院,太原030024

出　　处：《铸造设备研究》2002年第6期23-26,54,共5页Research Studies On Foundry Equipment

摘　　要：在实验的基础上,绘制出一条填料粒子成型时的体积与泡沫铝合金的孔隙率相对应的变化曲线,应用力学的基本原理对泡沫铝合金孔结构的成形机理进行了研究。在此基础上,对渗流铸造法中影响泡沫铝合金孔结构的其他工艺因素也进行了研究。确定了填料粒子成型时的体积变化应在一定范围内,其他工艺因素也应控制在一定范围内,这样才能稳定填料粒子尺寸,从而更好的控制泡沫铝合金的孔径尺寸,提高成形质量,稳定泡沫铝合金的使用性能。This experimentbased paper describes the curve of the volume changes of shaped filler particles in relation to foam aluminum porosity.The article applies the basic principle of mechanics to make a study of the shaping mechanism of foam aluminum pore structure.Based on these,the technique factors that influence the foam aluminum pore structure in the infiltration casting were studied.The result shows that the volume changes of shaped filler particles be in a certain range,and other technique factors be controlled in a certain range,the size of the particle can be stabilized so as to better control the aperture of the foam aluminum and stabilize its applying performance.

关 键 词：渗流铸造 泡沫铝合金 孔结构 散粒介质 裂纹成核 裂纹扩展 

分 类 号：TG292[金属学及工艺—铸造] TG249.