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在PK—1型旋转摆锤试验机上,研究了淬火和低温回火后的45、y7,y8、y10y12钢在冲击条件下的磨损。试验时冲击能量A_y分别为0.5kg·M/cm~2、1.14kg·M/cm~2、2.4kg·M/cm~2。 含碳量小于0.7～0.8％时,随碳量增加钢的耐磨性提高。含碳量再高,则耐磨性降低(见图),这是由于高碳钢的脆性增加所致。 不同含碳量的钢,其表面层的破坏情况具
On the PK-1 rotary pendulum test machine, the wear of 45, y7, y8 and y10y12 steel under impact condition after quenching and low temperature tempering was studied. The impact energy A_y at the test was 0.5 kg · M / cm 2, 1 · 14 kg · M / cm -2 · 2 · 4 kg · M / cm -2, respectively. When the carbon content is less than 0.7 to 0.8%, the wear resistance of the steel increases as the carbon content increases. The higher carbon content, the lower wear resistance (see photo), which is due to the increased brittleness of high carbon steel. Different carbon steel, the surface layer of the destruction of a situation