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分析了阀门灰铸铁件以其表面硬度作为铸件力学性能验收标准的可行性和检验方法。介绍了灰铸铁件壁厚与其抗拉强度及表面硬度的对应关系。给出了阀门铸件表面硬度的检测部位及具体操作方法。
The feasibility and test method of valve gray cast iron with its surface hardness as acceptance standard of castings mechanical properties were analyzed. The corresponding relation between gray cast iron wall thickness and its tensile strength and surface hardness is introduced. Given the valve casting surface hardness of the test site and the specific method of operation.