The gear ring is inlaid on the outer edge of the flywheel after being heated, and fastened to the outer edge of the flywheel after cooling to mesh with the starter gear to drive the crankshaft to rotate and start the engine. It can be seen from this that the ring gear must be subjected to repeated friction during work, so the requirements for the gear ring are also relatively high. Generally, high hardness, wear resistance and service life are required. To meet these, only quenching heat treatment is carried out on the gear ring. At present, most gear ring manufacturers use high-frequency induction hardening power supply to quench and heat treat the gear ring, and the effect is very good.
People are more worried about the deformation of the workpiece when quenching the gear ring, and the high-frequency induction hardening power supply has a fast heating speed, which can make the workpiece reach the required temperature in a short period of time, and the heating speed is uniform. As a result, the surface oxidation and decarburization of the workpiece are lighter, the deformation of the workpiece is small, and most workpieces do not need gas protection. Moreover, the ring gear quenched by the high-frequency induction hardening power supply has a thicker tough area under the surface hard layer, which has better compressive internal stress, which makes the workpiece have higher fatigue resistance and breaking capacity, which are very consistent with the gear ring work performance requirements. More importantly, compared with the tube-type high-frequency induction hardening power supply of the same power level, the IGBT high-frequency volume is reduced by 1/2, and the weight is reduced by 2/3. Save water by 40%, save electricity by 30%--40%, occupy a small area, easy to operate, you can learn it in a few minutes, and will not generate noise and dust, which greatly improves the working environment of workers and saves the survival cost of enterprises .
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