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我厂于1979年10月开始采用离子氮化新工艺,对前导向手用铰刀(图1)进行处理,几年来共生产40多件,先后在生产中进行了试用,效果很好。 前导向手用铰刀是我厂行自设计、制造的,刀具材料刃部为W_(18)CY_4V、柄部为40Cr,经对焊而成。刃部热处理技术要求Rc63～66。铰刀总长为200毫米,直径为16.05毫米,应用尺寸最大直径16.063毫米,最小为16.055毫米,切削刃对前导向的径向跳动量不应超过
I plant in October 1979 began using the new ion nitriding process, the former hand-reamer (Figure 1) for processing, a total of over 40 production pieces over the years, has been in the trial production, the effect is very good. The front hand reamers are self-designed and manufactured by our factory. The blade of tool material is W_ (18) CY_4V and the shank is 40Cr, which is made by butt welding. Blade heat treatment technology requirements Rc63 ~ 66. The reamer has a total length of 200 mm and a diameter of 16.05 mm. The maximum size of the reamer is 16.063 mm and the minimum is 16.055 mm. The radial runout of the cutting edge to the front guide should not exceed