轴承套圈毛坯的退火我厂过去一直是使用煤炉进行,缺点很多,如不仅生产效率低,更主要的是毛坯的退火质量不好,经常发生上层与下层的硬度及金相组织不合格.因此,在厂领导的重视下车间内的老工人和技术人员一起共同研究,对退火工艺进行了大胆革新,将煤炉改成了油炉.经历了三个多月的时间终于试制成功,现在生产中的使 Annealing of Bearing Rings Billets In the past, our factory had been using coal furnaces for many shortcomings. For example, not only the production efficiency is low, but also the quality of the annealed billets is poor. The hardness and microstructure of the upper and lower layers often fail. Therefore, the factory leadership under the attention of the workshop of the old workers and technical staff together to study, the annealing process bold innovation, the coal stove into a fuel oil stove.Experienced more than three months finally trial success, and now Make in the production