高硅铝合金A390铸棒的生产工艺研究  

Study on Production Process of High Silicon Aluminum Alloy A390 Casting Ingot

作　　者：孟保平[1] 张英[1] 关武红[2] 

机构地区：[1]河南科技大学,河南洛阳471039 [2]中国铝业股份有限公司郑州研究院,河南郑州450041

出　　处：《有色金属加工》2004年第3期5-7,39,共4页Nonferrous Metals Processing

摘　　要：高硅铝合金 A390是制造发动机活塞的理想材料。目前我国这种用途的 A390合金铸锭通常都是采用金属型铸造的,不仅铸造缺陷多,而且生产效率低。针对这种情况,我们在热顶半连续铸造的基础上开发出了生产这种合金锭的新工艺,并对合金的变质、热处理工艺进行了一些有益的探索。采用这一新工艺可有效地除气、排渣,提高表面质量及劳动效率,同时,也大大提高了合金的综合机械性能,这对于适应现代发动机朝高速、高增压、大功率方向发展有重要意义。High silicon aluminum alloy A390 is an idea material for making engine piston.Up to now,the A390 casting ingots for this purpose are usually cast by metal mould,so,there are not only many casting defects in the ingots,but the production efficiency is lower,too.In view of this situation,we have developed a new process for producing the A390 ingot based on the hot-top DC casting, and searched into the inoculation treatment and homogenization treatment of the alloy.The new process can effectively degas,remove slag,improve surface quality and increase production efficiency,and furthermore,greatly improve overall mechanical behavior of the alloy,which is very important for meeting the needs of modem engines developing towards high speed,high pressurizing and large power.

关 键 词：高硅铝合金 热顶半连续铸造 稀土 变质处理 热处理 

分 类 号：TG292[金属学及工艺—铸造]