镁合金用铸造型砂热物性参数测定与研究  

Determination and Study on Thermophysical Parameters of Molding Sand for Magnesium Alloy Casting

作　　者：汪敏 张旭亮 余国康[2] 刘越 WANG Min;ZHANG Xu-liang;YU Guo-kang;LIU Yue(School of Materials Science and Engineering,Northeastern University,Shengyang 110819,Liaoning,China;Shanghai Spaceflight Precision Machinery Institute,Shanghai 201600,China)

机构地区：[1]东北大学材料科学与工程学院,辽宁沈阳110819 [2]上海航天精密机械研究所,上海201600

出　　处：《铸造》2020年第11期1215-1220,共6页Foundry

摘　　要：通过浇注法得到型砂的温度场,利用反算法求出硅砂、宝珠砂、铬铁矿砂、陶粒砂、钢丸混砂和粘土砂的热导率和比热容,为镁合金铸造模拟提供了重要数据。利用测得的比热容和热导率得到了这些型砂的蓄热系数,通过对几种型砂蓄热系数的比较,得到了常用型砂对铸件激冷能力的大小,与实际生产相符合。The temperature field of molding sand was obtained using the pouring method, and the thermal conductivity and specific heat capacity of silica sand, ceramsite sand, chromite sand, Taoli sand, steel pellet mixed sand and clay sand were calculated by using inverse algorithm, which could provide important data for simulation of magnesium alloy casting. The heat storage coefficient of the molding sand was obtained by using the measured specific heat capacity and thermal conductivity, and by the comparison of the heat storage coefficients between several kinds of molding sand, the cooling capacity of the common molding sand to the castings was obtained, which was consistent with the actual production.

关 键 词：型砂 温度场 比热 热导率 蓄热系数 

分 类 号：TG221.1[金属学及工艺—铸造]