论文部分内容阅读
一、前言作为表面硬化处理方法之一的高频感应加热淬火法,由于能够增加各种机械零件表面层的耐磨性和提高其疲劳强度而得到广泛应用。高频感应加热淬火法存在的问题之一是淬裂。但根据零件形状、钢种,选择适当的频率和加热温度,在冷却时掌握好水的喷射时机和制作能够均匀冷却的冷却环,或者为了防止局部过热设计合适的施感导体等,均可防止淬火裂纹的产生。然而,近来由于钢种、形状的多样化以及要求高硬度、深硬化层等原因,可以任意
I. Introduction As one of the surface hardening method of high-frequency induction heating quenching method, due to the ability to increase the wear resistance of various mechanical parts surface layer and improve its fatigue strength and is widely used. One of the problems with high-frequency induction heating quenching is quench cracking. However, depending on the shape of the part, the type of steel, the selection of the proper frequency and the heating temperature, it is possible to prevent the water from being sprayed on the occasion of cooling and to make a cooling ring that can be uniformly cooled, or to design a suitable induction conductor to prevent local overheating Quenching cracks generated. However, recently, due to the variety of steel types and shapes, and the requirements of high hardness, deep-hardened layers and the like, any