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石油钻机传动链条在工作时,滚子与链轮齿啮合,产生摩擦磨损,因此要求滚子有一定的耐磨性,原工艺是采用20CrMo渗碳淬火;同时在啮合瞬间还与链轮齿面直接发生冲击,如果在钻进过程中进行接钻杆、换钻头、调整钻进速度时,滚子所承受的冲击能量比正常所承受的冲击能量要大得多,原工艺为了追求高韧性提高了回火温度,在400～480℃回火,回火后的硬度为HRC 47～53,这样既发挥不了渗碳淬火的高耐磨性的特点,也因韧性不足在使用中滚子经常发生碎裂现象。石油钻机传动链条的工作条件较农机链条、矿山链条恶
Oil rig drive chain at work, the roller meshing with the sprocket teeth, resulting in friction and wear, and therefore require a certain degree of wear-resistant roller, the original process is the use of 20CrMo carburizing and quenching; the same moment in the mesh with the sprocket tooth surface Direct impact, if the drill in the drilling process, change bit, adjust the drilling speed, the roller withstand impact energy than the normal impact energy to be much greater, the original process in pursuit of high toughness to improve The tempering temperature, at 400 ~ 480 ℃ tempering, hardness after tempering HRC 47 ~ 53, so that can not play the role of high wear resistance of carburizing and quenching, but also due to lack of toughness in the use of roller often occur Fragmentation phenomenon. Oil rig drive chain working conditions than agricultural chain, mine chain evil