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常用洛氏硬度有哪三种
更新时间: 2020-09-19 00:00:00  

常用洛氏硬度有以下三种:

1、HRA,采用60Kg载荷和钻石锥压入器求的硬度,用于硬度极高的材料;

2、HRB,采用100Kg载荷和直径1点58mm淬硬的钢球的硬度,用于硬度较低的材料;

3、HRC,采用150Kg载荷和钻石锥压入器的硬度,用于硬度高的材料。

关键词: 常用 硬度

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