The induction heat treatment process is very important, so we should pay more attention to the inspection heat treatment process to ensure the process is perfect, reduce the occurrence of errors.
1. The processing quality before the quenching of parts, including parts quenching site and the size of the positioning, preparatory heat treatment quality, steel quality and main components such as carbon content.
2. Equipment, whether the equipment is consistent with the process card, including quenching machine, quenching transformer model, transformer ratio, positioning size, sensor number, sensor number, and cleaning of water spray holes, etc.
3. The parameters of the specification when the actual quenching is consistent with the data specified in the process card, including: (1) The voltage, power, high-frequency generator of the intermediate frequency frequency, the high-frequency generator, the positive voltage, channel current, or the circuit voltage; 2) Heating, pre-cooling, water spray time; (3) the concentration, temperature, flow or pressure of the quenching; (4) Scan the bracket moving speed, a limit switch or hit block when scanning quenching.
4. The quenching quality of the part includes surface hardness, hardening area, exterior quenching quality and crack, etc., if necessary, the hardening layer depth and microstructure inspection.