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轴颈滚刀在各车辆段、车轮厂、工矿单位,主要用于车轮轴颈的精加工和轴身轮座部位的压光。原生产的轴颈滚刀质量较差,硬度不稳定,并经常淬裂。我们在实践中,研究出一套热处理工艺,获得了较好的效果。一、产品规格与技术要求 (一)产品规格有直径165毫米、140毫米(长尾)、140毫米(短尾)和192毫米四种。 (二)材料滚刀材料为GCr15,其化学成份如表1。 (三)技术要求 1.热处理后硬度:HRC62～64。 2.光洁度:精磨抛光▽11。二、试验过程和结果 (一)生产条件 1.设备 SRTX—4—9型箱式电炉一台; 702型恒温干燥箱一台。 2.材料质量为退火状态。 3.产品形状和尺寸见图1～图4。
Roller in the various sections of the vehicle, the wheel plant, mining units, mainly for the machining of the wheel journals and shaft camshaft seat calendering. The original production of the roller hob poor quality, hardness instability, and often quench cracking. In practice, we have developed a set of heat treatment process, obtained good results. First, the product specifications and technical requirements (A) product specifications are diameter 165 mm, 140 mm (long tail), 140 mm (short tail) and 192 mm four. (B) Material Hob material GCr15, its chemical composition shown in Table 1. (C) Technical Requirements 1. After heat treatment hardness: HRC62 ~ 64. 2. Finish: finish polishing ▽ 11. Second, the test process and results (A) the production conditions 1. Equipment SRTX-4-9-type box-type electric furnace; 702-type oven one. 2. Material quality is annealed. 3. Product shape and size shown in Figure 1 ~ Figure 4.