罐体用3104铝合金铸造通裂问题研究  

Study on Casting Tear of 3104 Aluminium Alloys Ingot

作　　者：赵业青 姜魁光 丁清伟 王齐伟 王家淳 

机构地区：[1]山东南山铝业股份有限公司国家铝合金压力加工工程技术研究中心,山东龙口265713 [2]北京南山航空材料研究院,北京100048

出　　处：《铸造技术》2015年第7期1884-1887,共4页Foundry Technology

摘　　要：采用金相及扫描电镜分析国内某企业生产3104铝合金时产生的通裂裂纹。结果表明:该裂纹宏观呈黄褐色,微观上为沿晶断裂,断口呈韧窝状,属于热裂裂纹。根据生产工艺及设备操作的分析,提出了相应解决措施:集中摆放锭位,减小温降,以便降低启铸温度及填充速度;加强启铸阶段的冷却水流量,稳定冷却水水质;加强工装的维护及操作的规范性。The crack microstructures in 3014 aluminim ingot was observed by metallographic microscopy and SEM. The results show that the crack show itshelf tan color, and expand along the grain boundary, the fracture is dimple, the crack belong to hot crack. Through the analysis to the technology and the equipments, some solutions were presented： concentrating the positions of ingots, reducing the temperature drop, using lower pouringing temperature and filling velocity; enhancing the flow of cooling water at pouring stage; maintenancing the equipments.

关 键 词：3104铝合金 通裂 热裂纹 

分 类 号：TG292[金属学及工艺—铸造]