Induction heating is adopted for gear high-frequency quenching equipment. The inductor is generally a hollow copper tube with medium frequency or high-frequency alternating current (1000-300000 Hz or higher). The principle of induction heating is that when the gear and other workpieces are placed in the inductor, the alternating magnetic field generated will generate induction current of the same frequency in the workpieces. This induced current is unevenly distributed in the workpieces, Using this skin effect, the surface of workpiece such as gear can be heated rapidly, and the surface temperature rises to 800-1000 ℃ in a few seconds, while the temperature rise in the heart is very small, so as to meet our requirements.
High frequency quenching refers to the heat treatment method of locally heating and cooling the workpiece surface with high-frequency current (30k-1000khz) to obtain the surface hardening layer. It is to strengthen the surface of gears and other workpieces at a certain depth, while the core remains basically unchanged. Therefore, it is a hot spot with high strength, high wear resistance and high toughness. Due to local heating, it can significantly reduce quenching deformation, Reduce energy consumption.
Purpose of gear high frequency quenching equipment:
1、 Heat treatment industry: high frequency quenching heat treatment of various electric tool gear shafts; High frequency quenching heat treatment of various gears, various pull forks, various spline shafts, transmission half shafts, various small shaft crank pins, various rocker arms and rocker shafts; High frequency quenching heat treatment of hardware tools, such as vice, hammer, vise and wrench.
2、 Forging industry: diathermy forming of standard parts and fasteners; Hardware tools, such as pliers and wrenches, are heated and formed; Steel pipe diathermy forming, such as elbow, etc; The steel plate is heated and bent.
3、 Brazing: application of brass and red copper; Welding of cemented carbide tools, such as turning tool, milling cutter and reamer; Welding of drill bits for prospecting, such as straight-line drill bits and sheep horn drill bits; Welding of diamond cutter head, such as diamond saw blade, abrasive tool and saw tooth welding.