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一前言金属硬度试验方法以布、洛、维氏硬度试验方法为主。在布、洛两用硬度计或布、洛、维三用硬度计上(包括光学硬度计在内)测定布氏硬度时,多数人员没有利用硬度计原装的洛氏硬度测深表(C尺刻度)来对照得出HB值进行简捷应用,而大多采用压出印痕。再借助放大镜或测量显微镜测其印痕直径,然后经过换算再查硬度表得HB值。对较小直径的压头(D为2.5mm)负荷(P为62.5kgf)则压出的印痕不十分清晰,容易造成人为的测量误差和仪器等多方面的误差。本人根据HB值与印痕深度的关系,自63年以来,通过实测的方法反复对照试验,最终制得了“洛氏硬度测深表C尺刻度对照HB值简表”(本文下称“简表”)。
A preface Metal hardness test method to cloth, Los, Vickers hardness test method based. In the cloth, Los dual-use hardness tester or cloth, Los, dimensional three hardness tester (including optical hardness tester), including the determination of Brinell hardness, the majority of personnel did not use the hardness of the original Rockwell hardness sounding table (C ruler Scale) to control the value of HB to make simple and easy to use, but most of the use of pressure marks. And then with a magnifying glass or measuring microscope to measure the imprint diameter, and then after the conversion hardness check HB value. On the smaller diameter of the head (D is 2.5mm) load (P is 62.5kgf) is the imprint of the impression is not very clear, easily lead to human error and other measurement errors and other equipment. According to the relationship between the HB value and the imprint depth, I have repeatedly controlled the test by the measured method since 63 years and finally got the “Table 1 of the Rockwell hardness depth meter C scale scale HB value” (hereinafter referred to as “ Profile ”).