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我厂生产的694Q发动机凸轮轴是用45号钢制造的。毛坯粗加工后调质HB=207～241;精加工后表面淬火,硬度HRC=52～63,淬火层深度为2～5毫米,尖部允许达到7毫米。我厂采用60KW高频机进行处理。由于感应器设计不当,处理后硬度均匀性、硬化层分布都不理想,无法达到技术要求。而凸轮尖部常因温度过高而引起开裂。为了提高零件质量,我们组织了攻关小组,经过分析研究认为,由于凸轮形状复杂,采用通常的感应器要得到良好的结果是比较困难的。但是改变感应器的设计和制作,使凸轮在加热
The 694Q engine camshaft produced by our factory is made of 45 steel. After rough roughing HB = 207-241; after finishing surface hardening, hardness HRC = 52 ~ 63, the depth of the quenching layer is 2 ~ 5 mm, the tip allows up to 7 mm. I plant 60KW high frequency machine for processing. Due to improper sensor design, hardness uniformity after treatment, hardened layer distribution are not ideal, can not meet the technical requirements. The cam tip often caused by temperature cracking. In order to improve the quality of parts, we organized a research team, after analysis and research that, due to the complexity of the cam shape, using the usual sensor to get good results is more difficult. But change the design and manufacture of the sensor so that the cam is heating