G80 lifting chain surface hardening technology

　　Some chains in the workpiece under the alternating load such as twisting and bending, the impact load, its surface layer to withstand a higher stress than the heart. In the case of friction, the surface layer is also constantly worn, so some of the chain surface layer of high strength, high hardness, high wear resistance and high fatigue limit and other requirements, only the surface hardening to meet the above requirements. G80 lifting chain surface deformation as a result of small, high productivity advantages, it is widely used in production.

　　Xiaobian today to give you that under the G80 lifting chain surface quenching technology to help you better understand the advantages of G80 lifting chain.

　　Manufacturing G80 lifting chain, the workpiece into the inductor (coil), when the inductor through a certain frequency of alternating current, the surrounding magnetic field is generated. The electromagnetic induction of the alternating magnetic field causes a closed induced current in the workpiece ─ ─ eddy current. The distribution of induced current in the workpiece cross-section is very uneven, the current density of the workpiece surface is high, gradually reduced inward, a phenomenon called skin effect. The surface of the workpiece high-density current electric energy into heat, so that the surface temperature, that is, to achieve surface heating. The higher the current frequency, the greater the current density difference between the surface of the workpiece and the internal, the thinner the heating layer. In the heating layer temperature exceeds the critical temperature of steel after rapid cooling, surface hardening can be achieved.