高速钢低温淬火在牙轮钻头上的应用

Application of Low Temperature Quenching of High Speed Tool Steel on Blast Hole Rock Bits

高速钢制作矿用牙轮钻头轴承系统的衬套，普遍存在破裂现象，通过低温淬火和优化工艺参数，韧性大幅度提高，工业试验的破裂率由传统的９０％～９６％下降到７％～１３％，钻头穿孔米道提高了１７％。

The fracture phenomenon generally occurs in the bushing mall from high speed tool steel on the beating system of blast hole rock bits. There is a big increase in toughness through low temperature quenching and optimum seeking parameter, the industry test shows that the rate of fracture will be reduced from 90%-96% to 7%-13% and drilling meters increased by 17%.