Φ32系列强韧钎具－钎杆的渗碳工艺研究

CARBURIZATION TECHNIQUES FOR DRILL STEMS-Φ32 DRILL TOOL SERIES

研究渗碳工艺、渗礁时间和渗层深度，获得了一条较为理想的钎杆三段气体渗碳工艺曲线。采用该工艺曲线比常规工艺方法缩短１／４的时间，平均渗碳速度提高１．２～１．５倍，节省煤油１／３，提高了渗碳质量，增强了耐磨性，延长了使用寿命。

As a kind of drilling devices, the drill tool is widely used in fields such as mining, transportation, geology and energy. The thermal treatment is one of the most important processes at quarantees quality. In the devolepment of this kind of drill stems, factors such as carburization techniques, time and depth, have been selected for study and an ideal curve has been obtained for gas carburization at three sections. The application of this curve to the carburization of drill stems could shorten one quarter of the time needed by ordinary techniques. Moreover, the carburization speed could increase 1. 2～1. 5 times and one third of kerosene could be saved. This technique effectively controls the oildropping amount and carburization time. As this guarantees the carburization quality. the wear and life drill stems are greatly improved.