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.
出处
《铸造技术》
CAS
北大核心
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)
关键词
3D打印用覆膜砂
铸造用覆膜砂
强度
角形系数
3D printing coated sand
casting coated sand
strength
angular coefficient
