Al-6.6Si铝合金MSMT法流变压铸成型研究  

Experimental Studies on Processing of Al-6.6Si Alloy prepared by MSMT Rheocasting

作　　者：梁博[1] 王亚宝[1] 刘建朝[1] 张志峰[1] 徐骏[1] 

机构地区：[1]北京有色金属研究总院国家有色金属复合材料工程技术研究中心,北京100088

出　　处：《铸造技术》2013年第9期1174-1176,共3页Foundry Technology

摘　　要：将自行设计的分散混合法流变制浆技术与压铸技术相结合，对Al-6．6Si铝合金进行流变压铸成型试验。结果表明：半固态流变压铸工艺与传统液态斥铸工艺有很大不同，在压射压力40MPa，压射速度2．0m／s，压射室和模具预热温度200℃，半固态浆料温度控制在610～615℃时，可以得到充型完好、组织均匀的水泵盖压铸件，压铸件的抗托强度和断后伸长率分别比液态压铸提高15％和50％。Combining the MSMT method with die-casting, the rhecasting forming process for A1-6.6Si aluminum alloy was investigated. The results show that there is a great difference between semisolid rhecasting and traditional die-casting, the pump lid parts with well filled shape and uniform microstructures can be achieved with injection pressure of 40 MPa, injection speed of 2.0 m/s, injection chamber and mould temperature of 200 ℃, semisolid slurry temperature of 610-615 ℃, and the tensile strength and elongation of the pump lid parts is increased by 15% and 50%, respectively compared with the liquid casing ones.

关 键 词：分散混合法流变制浆技术（MSMT法） 压射压力 压射速度 

分 类 号：TG249.2[金属学及工艺—铸造]