### How to calculate the heating time of the forging induction heating furnace?

How to calculate the heating time of the forging induction heating furnace?

How to calculate the heating time of a 1000kw intermediate frequency furnace for forging diameter 100 length 250 bars

A certain factory knows that the existing forging blanks are φ100×250mm, the heating time is 10 seconds/piece (including auxiliary time), and the initial forging temperature is 900°C. Calculate the configured power. Calculate the mass of φ100×250mm as 9.4Kg.

P=(0.168×1000×9.4)/(0.24×0.6×10)=1000KW

Where:

0.168—The average specific heat of ferrous metals;

9.4—The quality of the workpiece (Kg);

1000—Temperature rise of workpiece heating;

0.24—Work heat equivalent;

0.6—average efficiency (in this example, 0.6, generally 0.5～0.65, and special-shaped inductors are lower, 0.4);

10—heating time (seconds)

Based on the above calculation, a 1KHz forging induction heating furnace with a rated power of 1000KW can be configured.