Al-Mn-Mg系铝合金铸轧表面夹渣缺陷的研究  

Study on the surface defects of Al-Mn-Mg aluminum alloy

作　　者：池国明 文敏敏 朱灵斐 杜新伟 胡展奎 Chi Guoming;Wen Minmin;Zhu Lingfei;Duxinwei;Hu Zhankui(Ruyuan Dongyangguang UACJ Fine Aluminum Foil.,Co.,Ltd.,Shaoguan 512721,China)

机构地区：[1]乳源东阳光优艾希杰精箔有限公司,韶关512721

出　　处：《铝加工》2022年第6期40-44,共5页Aluminium Fabrication

基　　金：2021年广东省科技专项资金项目(210909164531614)。

摘　　要：针对Al-Mn-Mg系铝合金铸轧板表面夹渣缺陷进行了SEM形貌观察、EDS能谱成分分析和铸轧工艺的试验研究,确定该缺陷是因氧化膜破裂而导致的。进一步的实验证明,在其它条件一致的情况下,通过合理控制前箱液面高度(11~14mm)、采用较小的嘴辊间隙(0.6~0.8 mm)、合理设计铸嘴内部结构,可以基本消除此类铸轧板表面夹渣缺陷。The inclusion defects on the surface of Al-Mn-Mg aluminum alloy cast-rolled sheet were observed by SEM, analyzed by EDS and experimentally studied by casting and rolling process. It was determined that the defects were caused by the breaking of oxide film. Further experiments show that, under the condition of the same other conditions, by reasonably controlling the liquid level of the front tank(11 ~ 14 mm), adopting a small nozzle-roll clearance(0.6 ~ 0.8 mm), ensuring a high melt quality and reasonable internal structure of the cast nozzle, the surface inclusion defects of the cast-rolled plate can be basically eliminated.

关 键 词：夹渣 氧化膜 前箱液面高度 嘴辊间隙 熔体质量 嘴腔冷凝铝 

分 类 号：TG339[金属学及工艺—金属压力加工]