铸造铝合金气孔产生的原因与预防措施  

Causes of Pore in Cast Aluminum Alloy and Preventive Measures

作　　者：戴威然 胥福顺[2,3] 李恒 岳有成 孙彦华[2,3] DAI Weiran1, XU Fushun2,3, LI Heng2,3, YUE Youcheng2,3, SUN Yanhua2,3(1. Yurman Yunlv Zexin Aluminum Co., Ltd., Qujing 655500, China; 2. Kunming Metallurgy Research Institute, Kunming 650031, China; 3. State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources, Kunming 650503, China)

机构地区：[1]云南云铝泽鑫铝业有限公司,云南曲靖655500 [2]昆明冶金研究院,云南昆明650031 [3]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650503

出　　处：《铸造技术》2018年第10期2273-2274,共2页Foundry Technology

基　　金：云南省科技计划项目(2016BA011);云南省应用基础研究重大项目(2013FC010)

摘　　要：通过对铸造铝合金气孔内部特征进行分析,研究铸造铝合金内部Al-Fe-Si相对气孔形成的影响机理,探讨了铸造铝合金的气孔缺陷产生的原因,并提出相应的预防措施。结果表明,铸造铝合金气孔形成的主要原因是合金组织内Al-Fe-Si相的富集。通过预备工作、控制熔炼速度、防潮、精炼除气等措施,可以预防气孔的产生。Through the analysis of the internal characteristics of the pores of casting aluminum alloy, the influence mechanism of the formation of the relative pores of Al-Fe-Si phase in cast aluminum alloy was studied. Meanwhile, the causes of the defects of the pores of cast aluminum alloy were discussed, and the corresponding preventive measures were put forward. The results show that the main reason for forming pores of cast aluminum alloy is the enrichment of Al-Fe-Si phase in the alloy mierostructure. Through preparation work, control smelting speed, moisture-proof, refining and other measures, the generation of pores can be prevented.

关 键 词：铝合金 铸造 气孔 预防措施 

分 类 号：TG245[金属学及工艺—铸造]