Whether it is side bow chains or other uses of the chain, after the production is basically heat treatment, in order to further strengthen its performance. There are many commonly used heat treatment chains, including annealing, normalizing, quenching, tempering, carburizing, nitriding, carbonitriding, boriding, aging treatment, etc.

It is important to mention that side bow chains aging treatment and surface quenching, aging treatment can be divided into natural aging treatment and artificial aging treatment, the former is the aging phenomenon of side bow chains placed at room temperature or natural conditions for a long time storage; The latter is the aging process of heating the side bow chains to a higher temperature and aging treatment for a shorter time.

When some side bow chains are used, under the action of alternating loads such as torsion and bending and impact loads, its surface layer is subjected to higher stress than the heart, so it will be constantly worn, so some side bow chains surface layer proposed high strength, high hardness, high wear resistance and high fatigue limit requirements. Only surface strengthening can meet the above requirements.

It is precisely because the surface quenching treatment has the advantages of small deformation and high productivity, it has an extremely important role in improving the surface performance of side bow chains, and is widely used in the production process of side bow chains. According to different heating methods, surface quenching can be divided into induction heating surface quenching, flame heating surface quenching, electric contact heating surface quenching and other different ways.

In terms of side bow chains induction heating surface quenching, only side bow chains need to be put into the inductor, when the inductor passes a certain frequency of alternating current, it will produce alternating magnetic fields around it. Due to the electromagnetic induction of the alternating magnetic field, the enclosed induced current can be generated in the side bow chains.

When the electrical energy of the high-density current on the surface of the side bow chains is converted into heat energy, the temperature of the surface layer can be promoted to increase and surface heating can be achieved. The higher the current frequency, the greater the difference in current density between the surface and the inside of the workpiece, the thinner the heating layer, and the quenching is completed by rapid cooling after exceeding the critical point temperature of the steel.

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