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在狠批“四人帮”抓纲治国的大好形势下,我厂190柴油机曲轴半自动淬火机床试制成功,经过调试,已投入生产使用,这是自力更生精神的又一胜利。 190柴油机曲轴使用QT 60—2稀土球铁为原料。过去只经正火、回火的曲轴在运转过程中连杆轴颈以及油封位置处容易产生早期磨耗,增加中频淬火、回火工序后大大地增强其耐磨能力。根据试验,柴油机经2000小时试验后,连杆位置磨损仅0.02～0.03毫米,过去中频淬火
Under the great situation of grasping the “Gang of Four” to tackle the rule of the state and govern the country, the trial manufacture of the semi-automatic crankshaft crankshaft 190 for our factory was successfully completed. After commissioning, it has been put into production for use. This is another victory of self-reliance. 190 diesel engine crankshaft using QT 60-2 rare earth ductile iron as raw material. In the past only normalizing, tempering crankshaft in the process of running the connecting rod journal and oil seal prone to early wear, increase IF quenching, tempering process greatly enhance its wear resistance. According to the test, diesel engine after 2000 hours test, the connecting rod wear only 0.02 ~ 0.03 mm, the past IF quenching