高镁铝合金扁铸锭铸造收尾区裂纹产生原因分析及应对措施  

Causes of cracks and countermeasures at LTF of high magnesium aluminum alloy slabs

作　　者：吴圆丽[1] 林潇丽[1] 颜文煅 Wu Yuanli;lin Xiaoli;Yan Wenduan

机构地区：[1]福建船政交通职业学院,福建福州350007 [2]闽南理工学院,福建泉州362700

出　　处：《木工机床》2021年第3期29-30,35,共3页Woodworking Machinery

摘　　要：在铸造镁含量大于4%高镁铝合金扁锭时,铸锭尾部浇口出现裂纹,裂纹深度200-300mm,造成铸锭切废量增加50-100mm,影响成品率。通过延长扁锭停铸后的自然冷却时间,有效的减少了尾部裂纹的产生。Some cracks normally appear in the last to freeze zone of high magnesium aluminum alloy slabs with the Mg content greater than 4%,and the depth of cracks is between 200 mm and 300 mm.An increase scrap removal in ingot by 50 mm to 100 mm is adopted as a result.The yield of products is also affected.The cracks in the LTF can be effectively reduced by prolonging the natu⁃ral cooling time of flat ingot after casting.

关 键 词：高镁铝合金 铸锭 尾部裂纹 自然冷却 

分 类 号：TG292[金属学及工艺—铸造]