Convex half-circle milling cutters use high-frequency induction heating equipment for heat treatment. What is the process like?

The shape of the convex semicircular milling cutter is relatively simple, the thickness of the milling cutter is twice that of R, and it requires higher hardness and wear resistance. We usually use high-frequency induction heating equipment to heat treat convex semicircle milling cutters, and the effect is very good. Today, Zhengzhou Gou's technical staff will tell you about the high-frequency heat treatment process of convex semicircular milling cutters.

Technical requirements for convex semicircular milling cutters: hardness 64-66.5HRC, quenching grain size 9.5-10.5, allowed overheating level 1. Special quenching fixtures are used for heating heat treatment. 500℃ air oven drying, high frequency induction heating equipment is used for preheating heat treatment at 840-860℃, the preheating time is twice the heating time, the M2 steel heating temperature is 1220-1230℃, and the cooling medium is neutral salt. Tempering at 550℃xlhx3 times. See the table below for heating times.

The convex semicircle milling cutter is a form milling cutter, mainly used to process a concave arc or rounded surface. Therefore, we have very high quality requirements for it. After many manufacturers adopt the above process, the convex semicircle milling cutters produced are of good quality and meet their working requirements.