Research on Improvement Method of Brinell Hardness Measurement
According to calculates formula of the brinell hardness,the new method of directly measuring the indentation depth using home-made dial indicator with the probe of modification measures brinell hardness of test samples.Through comparison tests of 45 steel furnace cool and the air cool,T12 furnace cool and the air cool,take the LINTAB5 microscope-based measurements as criterion,the measure error of hardness are 1.64%,2.95 %,1.87 % and 1.54 %.Error of the indentation diameter reading microscope measurement are 2.98%,3.27%,2.69 % and 3.17%.