论文部分内容阅读
目前,我国轴承行业对轴承外圈采用盐浴炉淬火加热的较多,它存在着变形大、费用高、劳动强度大等弊病。我厂生产的小型、微型轴承,外圈最大直径为φ35mm、壁厚为2mm,外径磨量0.12-0.15mm。过去,我们一直用盐炉加热淬火,操作时虽严格要求,采用专用淬火夹具,但淬火后工件变形仍然很大,椭圆度不合格率高达40％(要求≤0.08mm),且清洗去盐也很麻烦。
At present, the bearing industry in China uses salt bath furnace to quench and heat the bearing outer ring more, which has the disadvantages of large deformation, high cost and labor intensity. I plant the production of small, miniature bearings, the maximum diameter of the outer ring φ35mm, wall thickness of 2mm, diameter grinding 0.12-0.15mm. In the past, we have been using salt furnace heating quenching, although the operation is strictly required, the use of special quenching jig, but after quenching the workpiece deformation is still large, ovality failure rate as high as 40% (≤ 0.08mm), and to clean the salt Very troublesome.