3D打印和铸造用覆膜砂的性能及应用  

Performance of 3D Printing and Casting Coated Sands and Their Application

作　　者：潘锐[1] 刘见向 张炳荣[1,2] 李明[1] 

机构地区：[1]齐鲁工业大学机械与汽车工程学院,山东济南250353 [2]山东泰来铸铝科技有限公司,山东莱芜271100

出　　处：《铸造技术》2016年第12期2773-2775,共3页Foundry Technology

基　　金：山东省科技重大专项(编号:2015ZDZX03004);大学生创新创业训练计划项目(编号:201610432052)

摘　　要：对3D打印用覆膜砂和铸造覆膜砂分别进行了热抗拉强度、热抗弯强度、发气量和灼减量等性能测试,通过测试结果并结合两种覆膜砂的微观形貌、成分、用途以及工艺等,分析了二者的性能差异。结果表明:3D打印用覆膜砂的强度优于铸造用覆膜砂,但3D打印用覆膜砂的发气量和灼减量明显较高。原砂的角形系数对强度有很大影响,角形系数越小强度越高。相同粒度分布的原砂,其中细砂的含量越多其强度也越高。The 3D printing coated sand and the casting coated sand were studied by testing a series of performance such as hot tensile strength, bending strength, gas evolution and cauterant decrease test, and the performance difference was analyzed combining the microstructure, composition, application and process of two kinds of coated sand. The results show that the strength of the resin coated sand for 3D printing is better than that for casting, but accompanied by a higher gas evolution and cauterant decrease of 3D printing coated sand. The angular coefficient of raw sand has a great influence on the strength, the smaller the angular coefficient, the higher the strength is. For the same granularity distribution of the sand, the more content of fine sand, the strength is also higher.

关 键 词：3D打印用覆膜砂 铸造用覆膜砂 强度 角形系数 

分 类 号：TG221[金属学及工艺—铸造]