### How to determine the number of turns of the induction coil and the diameter of the copper tube of the induction heating furnace?

How to determine the number of turns of the induction coil and the diameter of the copper tube of the induction heating furnace?

1. The diameter of the sensor

The shape of the inductor is determined according to the surface profile of the heating part

Certainly, there must be a certain gap between the induction coil and the parts,

And it should be uniform everywhere.

2. When heating the outer circle, the inner diameter of the sensor D inner = D 0 +2a;

3. When heating the inner hole, the outer diameter of the inductor D outside = D 0 －2a. Among them, D 0

Is the outer diameter or inner hole diameter of the workpiece, a is the gap between the two

(For shaft parts, take 1.5 ～ 3. 5mm, for gear parts take 1.5 ～

1. 5mm, the inner hole part is 1~2mm.
2. For medium frequency induction heating and quenching, the gap is slightly different. Generally, the shaft parts are 2.5 ～3mm, and the inner hole is 2 ～3mm)