3104铝合金低液位铸造过程多场耦合模型的开发及工艺优化  

Study of Development and Parameter Optimization of Multi-Field Coupling Model for Low Head Casting of 3104 Aluminum Alloy

作　　者：薛冠霞[1] 长海博文 郭世杰[1] 刘金炎[1] 

机构地区：[1]苏州有色金属研究院有限公司,江苏苏州215026

出　　处：《有色金属加工》2016年第3期20-26,共7页Nonferrous Metals Processing

摘　　要：应用专业铸造过程模拟软件Procast,建立了铸锭规格为440mm×1320mm的3104铝合金低液位铸造过程多场耦合模拟模型,获得了铸锭内部温度分布和流动情况以及应力应变的累计过程。利用该模型对3104铝合金低液位铸造过程进行工艺优化,结果表明,通过调整铸造速度和冷却水流量工艺参数,能够确定适合的凝壳初始位置h,减小铸造开始阶段铸锭第一主应力,采用此工艺,铸锭表面质量光滑,裂纹缺陷消除。A multi-field coupling model was built for Low Head Casting（ LHC） of 3104 aluminum alloy in the size of 440 mm ×1320 mm by using professional casting simulation soft PROCAST, achieving temperature distribution and fluid flow and accumulated stress inside the ingot during the casting. Simulated results were consistent with actual measurements inside the ingot,which demonstrated that the thermal field model was reliable. Casting parameters were optimized using the model. The results showed that appropriate initial position for shell（ h） was determined and the first principal stress inside the ingot was decreased by adjusting casting speed and cooling water flow; the smooth-surfaced ingots without cracking could be available with the said casting process.

关 键 词：低液位 数值模拟 裂纹 工艺优化 

分 类 号：TG292[金属学及工艺—铸造]