Induction hardening apparatus, induction hardening method, induction heating coil, heat treatment apparatus, and heat treatment method

摘要

According to an embodiment, an induction heating coil includes a heating conductor portion which is formed of a conductor member and has a zigzag shape in which a bent portion opened to one side in a first direction and a bent portion opened to the other side in the first direction are alternately continuously arranged in opposite directions along a second direction crossing the first direction.