我厂生产的803轮船变速箱中,有三根长约500毫米、直径约70毫米的40钢轴需要进行调质处理。起初,我们是用电炉加热的,生产效率很低,不能满足生产需要。后来,我们就改用火焰反射炉加热。但是,在反射炉中加热遇到的第一个大问题就是零件氧化厉害。最初几次实验,加热后的零件氧化皮厚达30～40丝。针对这种情况,我们采取了炉前措施,即用钢丝刷把出炉零件的氧化皮刷掉,然后进行淬火。但是这样往 803 ship gearbox I plant, there are three about 500 mm long, about 70 mm diameter steel shaft 40 need to be quenched and tempered. At first, we were heated with an electric furnace, which was inefficient and unable to meet production needs. Later on, we switched to a flame reverb furnace. However, the first major problem with heating in a reverberatory furnace is the oxidation of the part. The first few experiments, the heated parts of the oxide skin up to 30 ~ 40 wire. In view of this situation, we have taken the furnace before the measure, that is, the wire brush to brush off the oxide parts of the baked parts, and then quenched. But like this