去年,我厂采用低温镀铁工艺,为攀枝花钢铁公司初轧厂修复了1600吨大剪机二轴,经一年来生产使用,工作正常,尚在继续使用。二轴是大剪机减速箱的一根主要轴,是由32铬锰钼钢制成,重13.5吨。该轴轴颈磨损0.05毫米,使轴承松动外窜。初轧厂要求我厂帮助修复。我们认为此轴采用低温镀铁工艺修复比较合适,但对于这种材质且这样大的轴,我们还未镀过。镀后镀层结合强度是否可靠,能否采用尺寸镀的方法来解决镀后机械加工的困难,对此没有经验。为此,我们事先反复地作了 Last year, our factory adopted low-temperature iron plating process, repaired 1,600 tons of large shears for the first rolling mill of Panzhihua Iron and Steel Co., Ltd., and after a year’s production and use, it is working normally and is still being used continuously. The two shafts are a main shaft of the heavy-duty machine gearbox and are made of 32 Cr-Mn-Mo steel weighing 13.5 tons. The shaft journal wear 0.05 mm, the bearing loose channeling. Initial mill asked my factory to help repair. We think this shaft is more suitable for low-temperature iron plating, but we have not yet plated this shaft with such a material. After coating the bonding strength is reliable, can use the size of the plating method to solve the difficulties of plating after machining, there is no experience. For this reason, we made it in advance