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最广泛采用的硬度测定法是在静力负荷下用钢球,金钢钻圆锥体来测定金属的硬度,即一般工厂常用的布氏和洛氏硬度计。洛氏硬度值之测定是用测深来求得;布氏硬度计用钢球做试验时,材料的硬度用钢球压入试件来进行测定,而其硬度计算在标准的(将一定直径的球在规定负荷下在一定时间内压入试样中)试验条件下是负荷除以压痕表面积所得之商。钢球所造成的球冠面上每平方毫米所承受的平均压力,可按下
The most widely used hardness measurement method is to use the ball under the static load, the diamond cone to determine the hardness of the metal, that is, the general factory commonly used Brinell and Rockwell hardness tester. Rockwell hardness value is determined by sounding; Brinell hardness test ball, the hardness of the material pressed into the test sample with a steel ball, and its hardness calculated in the standard (will be a certain diameter Of the ball under the specified load in a certain period of time pressed into the specimen) under test conditions is the load divided by the indentation surface area derived business. Ball caused by the spherical surface per square millimeter to withstand the average pressure can be pressed