挤压用大规格4032铝合金圆铸锭热顶铸造工艺  

Hot top casting technology of large size 4032 aluminum alloy round ingot for extrusion

作　　者：祁海东 杨建 刘民章 Qi Haidong;Yang Jian;Liu Minzhang(Qinghai Baihe Aluminum Co.,Ltd.,Xining 811600,China;Qinghai Qiaotou Aluminum & Power Co.,Ltd.,Xining 810100,China)

机构地区：[1]青海百河铝业有限责任公司,广西西宁811600 [2]青海桥头铝电股份有限公司,广西西宁810100

出　　处：《轻金属》2019年第9期49-53,共5页Light Metals

摘　　要：对4032铝合金进行了成分优化,提出了大规格4032铝合金圆铸锭的熔铸难点。研究了4032铝合金熔炼的加料顺序和加料方式、熔炼温度控制、炉内精炼、变质工艺以及其大规格圆铸锭的热顶铸造工艺,生产出了符合挤压要求的Ф605mm圆铸锭。提出了其熔铸过程中应注意的问题。The composition of 4032 aluminum alloy was optimized, and the difficulties of melting and casting large size 4032 aluminum alloy round ingot were pointed out. The paper analyzed the feeding sequence and charging mode, control of melting temperature, melt refining inside the furnace and modi fication process for the melting of 4032 aluminum alloy, as well as the hot top casting process for large size round ingot, then the round ingot with a diame ter of 605 mm which meet extrusion requirements was produced. At last, problems that should be noticed during its melting and casting process were put forward.

关 键 词：4032铝合金 大规格 挤压用圆铸锭 热顶铸造 

分 类 号：TF806.1[冶金工程—有色金属冶金]