布氏硬度试验法的精度是检定和使用单位共同关心的问题,本文拟对造成布氏硬度试验误差的主要原因作个初步分析。布氏硬度试验法是用一定直径的淬火钢球在一定的载荷下压入试件,保持一定的时间后卸除载荷,测量试件上的压痕直径,以压痕单位面积上所承受的载荷值表示试件的硬度。布氏硬度值按下式计算: The accuracy of Brinell hardness test method is a common concern of the test and use units. This paper intends to make a preliminary analysis of the main causes of Brinell hardness test error. Brinell hardness test method is to use a certain diameter of the quenched steel ball under a certain load into the specimen, to maintain a certain time after the unloading load, measuring the indentation diameter of the specimen to indentation per unit area to bear The load value indicates the hardness of the test piece. Brinell hardness value is calculated as follows: