真空浇注和水冷锭模成形Mg-Li合金铸锭的工艺实践  

Process Practice of Forming Mg-Li Alloy Ingot by Vacuum Casting and Water-Cooled Ingot Die

作　　者：张琳[1] 张国生 ZHANG Lin;ZHANG Guo-sheng(Xi′an Aeronautical Polytechnic Institute,Xi′an 710089,Shaanxi,China)

机构地区：[1]西安航空职业技术学院,陕西西安710089

出　　处：《铸造》2022年第11期1397-1402,共6页Foundry

摘　　要：对某牌号Mg-Li合金铸锭的生产工艺进行了实践,主要包括铸锭技术指标及几何形状设计、铸锭熔炼浇注及凝固冷却条件的确定、铸锭工装设计与准备、铸锭浇注和冷却工艺参数选择,铸锭的试制与生产等。结果表明,采用真空感应炉,氩气、熔剂保护精炼合金,浇注、凝固冷却均在真空状态下进行,确定合理的锭模冷却水路结构和水冷部位,选择合理的浇注和冷却工艺参数可以有效防止铸锭内部纵深缩孔及缩松的形成,从而获得满足质量要求的铸锭。The production process of a certain grade of Mg-Li alloy ingot was practiced, mainly including ingot technical index and geometric shape design, ingot smelting and pouring and determination of solidification and cooling conditions, ingot tooling design and preparation, ingot pouring and cooling selection of process parameters,trial production and production of ingots, etc. The results showed that the uses of vacuum induction furnace,argon, flux protection refining alloy, pouring, solidification and cooling were all carried out in a vacuum state, the decision of the reasonable ingot mold cooling water channel structure and water cooling parts, the selection of reasonable pouring and cooling process parameters can effectively prevent the formation of deep shrinkage cavity and shrinkage porosity inside the ingot, thereby obtains the ingot that meets the quality requirements.

关 键 词：MG-LI合金 铸锭 真空 水冷锭模 工艺参数 

分 类 号：TG292[金属学及工艺—铸造]