Limitations of induction hardening

The induction hardening process has its special application limitations, which is related to the objective law of magnetic field distribution, and is specifically analyzed for specific parts.

1. Complicated section parts

For example, the gear shaft of a gearbox contains multiple gears, multiple steps and bearing positions. There are many induction hardening processes, which are difficult, and cost considerations are inappropriate. There are also parts with sharp corners in the hardened area, induction hardening is very difficult, carburizing or other chemical heat treatment should be used.

2. Thin-walled parts

Carburizing and quenching can be a very thin hardened layer, and the core hardness is low to ensure toughness. Induction hardening may be brittle due to hardening.

3. Small parts

Each part of induction hardening requires the steps of loading and unloading, heating, cooling, etc., which is not economical for very small parts. Carburizing and quenching can be installed in batches, with high output and low cost.

4. Single piece production

Induction hardening requires the production of different inductors for different parts, which does not have economic advantages for small batch production.

Some suggestions for induction hardening instead of carburizing