1970年4月,我厂搞成了一个小型气体炉,对粉末冶金制品进行渗炭淬火,提高其耐磨性。事实上,气体炉亦是轴承生产中的重要设备。随着套圈毛坯精度和生产率的提高,要求热处理生产率亦相应提高,而工件的脱炭层、贫炭层则要求减少到最低限度。因此目前轴承热处理发展的趋势是液体介质向气体介质发展;间歇生产向连续生产发展。 在发展过程中,热处理工艺指标的可控程度和自动化程度将大大提高,最后反映在轴承使用寿命的提高,一个轴承顶两个使用,这比单纯增产更有重大意义。 我厂的小型气体炉主要供粉末冶金制品渗炭淬火用,又可对小尺寸的精密轴承和航空轴承套圈进行光亮淬火。在脱炭情况下可 April 1970, I plant into a small gas furnace, the powder metallurgy products carburizing quenching, improve its wear resistance. In fact, the gas furnace is also an important equipment in the production of bearings. With the improvement of the accuracy and productivity of the ferrule blank, the productivity of the heat treatment is also required to be increased accordingly. However, the de-charcoal and carbon-poor layers of the workpiece are required to be reduced to a minimum. Therefore, the current trend of development of bearing heat treatment is the development of liquid medium to gaseous medium; intermittent production to continuous production development. In the process of development, heat treatment process indicators will be greatly enhanced the degree of control and automation, and finally reflected in the increase in bearing life, a top two bearings to use, which is more significant than the simple increase in production. The small gas furnace in our factory is mainly used for carburizing and quenching of powder metallurgy products, but also for the light quenching of small size precision bearings and aviation bearing rings. In the case of carbon off