7A06铝合金空心圆铸锭裂纹产生的原因及其控制措施  

Causes and control measures of crack defects for 7A06 aluminum alloy hollow round ingot

作　　者：裴长世 雷延霞 Pei Changshi;Lei Yanxia(Qinghai Jinxing Mining Co.,Ltd.,Xining 810000,China;Qinghai Province Industrial School,Xining 810000,China)

机构地区：[1]青海省金星矿业有限公司,青海西宁810000 [2]青海省工业学校,青海西宁810000

出　　处：《轻金属》2022年第5期47-52,共6页Light Metals

摘　　要：针对7A60铝合金空心圆铸锭的裂纹缺陷,从合金特性、化学成分、熔铸工艺、熔体质量和工艺装备等方面分析了影响7A60铝合金空心圆铸锭裂纹缺陷的因素,并根据分析结果制定了7A60铝合金空心铸锭裂纹缺陷的预防措施。通过上述措施的实施,7A60铝合金空心圆铸锭的裂纹废品率由2017年的80%下降到2018年的46.7%。As for crack defects of 7 A06 aluminum alloy hollow round ingots, the factors affecting crack defects of 7 A06 aluminum alloy hollow round ingots were analyzed from perspectives of alloy characteristics, chemical composition, melting-casting technology, melt quality and technical equipments, etc. The preventive measures against crack defects of 7 A06 aluminum alloy hollow round ingots were prepared according to the above analysis results. The crack scrap rate of 7 A06 aluminum alloy hollow round ingots was reduced from 80% in 2017 to 46.7% in 2018, thanks to the implementation of the above measures.

关 键 词：7A60铝合金 空心圆铸锭 热顶铸造 裂纹缺陷 控制措施 

分 类 号：TG146.21[一般工业技术—材料科学与工程]