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文章简述了型砂性能对铸件质量的重要性及部分型砂性能检测仪。着重介绍了型砂剪切变形测试仪的结构及测试原理,膨润土合量、紧实率、α淀粉对剪切强度和变形极限的影响。
The article briefly describes the importance of sand properties on the quality of castings and part of sand performance tester. The structure and test principle of sand shear deformation tester, the amount of bentonite, the compaction rate and the effect of α-starch on the shear strength and deformation limit are mainly introduced.