WE54镁合金铸件冒口有效补缩距离的模拟  

Simulation Research of Riser Effective Feeding Distance of WE54 Magnesium Alloy Castings

作　　者：李吉林[1] 马壮 冯俊宁 

机构地区：[1]北方民族大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2018年第2期135-139,共5页Special Casting & Nonferrous Alloys

基　　金：宁夏高等学校科学研究基金资助项目(NGY2015154);北方民族大学重点科学研究基金资助项目(2015KJ14;2017KJ02)

摘　　要：通过试验与数值模拟相结合,验证了数值模拟预测WE54镁合金铸件中缩松缺陷的准确性,并对铸件冒口的有效补缩距离进行了模拟。结果表明,采用模拟软件能够对WE54合金铸件中的缩松分布进行准确预测。在壁厚相同的情况下,铸件冒口的有效补缩距离随铸件宽厚比的增大而增大。而在宽厚比一定的条件下,铸件壁厚越薄,有效补缩距离越短。实现了对WE54镁合金铸件冒口数量的计算,完善了WE54合金铸件的冒口设计方法。Casting simulation method to predicting shrinkage porosities in WE54 magnesium alloy castings was evaluated through comparison between casting experiment and simulation,and the riser effective feeding distance was calculated by simulation software.The results reveal that the distribution of shrinkage porosities in WE54 magnesium alloy castings can be predicted reliably with casting simulation method.At the same thickness,the riser effective feeding distance of WE54 alloy is increased with increasing in width-to-thickness ratio.And with constant width-to-thickness ratio,the feeding distance is decreased with the casting thickness decrease.The results can realize calculation of riser quantity needed to feed a WE54 alloy casting,and the riser designing method for WE54 alloy castings is optimized.

关 键 词：镁合金 砂型铸造 有效补缩距离 冒口设计 

分 类 号：TG292[金属学及工艺—铸造] TG146.22[一般工业技术—材料科学与工程]