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我厂有一种m=5,71齿的齿圈(见图1),材料为4GCr,齿部硬度要求HRC30～40。我们用箱式炉整体加热,使齿面激冷来达到要求。为使淬火均匀,采用了手摇淬火机(见图2)进行淬火。简易淬火机由转动部分、喷水咀和排水槽、机架三部分组成。喷水咀是由一个直径3/4英寸的管弯成环形,在它上面焊8个1/2英寸的竖管,其竖管顶端焊死,在管壁向里方向上开宽1毫米的缝,使水喷向齿面。环形管的一端接进水管。水槽下端设有排水管,排水管直径应比进水管直径大些。水槽用6毫米厚的钢板焊
I plant a m = 5,71 teeth ring (see Figure 1), the material is 4GCr, tooth hardness HRC30 ~ 40. We use the whole box-type heating furnace, the tooth surface chilling to meet the requirements. In order to quench even, using a hand quenching machine (see Figure 2) for quenching. Simple quenching machine consists of rotating parts, water nozzles and drainage trough, the rack consists of three parts. The nozzle was made in the shape of a ring of 3/4 “diameter tubing, welded to it with 8 1/2” risers, the top of which was welded to death and opened 1 mm wide in the tube wall Sew the water to the tooth surface. One end of the loop pipe is connected to the water pipe. The lower end of the sink is provided with a drain pipe. The diameter of the drain pipe should be larger than the diameter of the inlet pipe. Sink with 6 mm thick steel welding