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Influence of power and frequency on induction furnace heating


The power of intermediate frequency furnace determines the heating speed and efficiency.

The principle of induction heating equipment and the working principle of medium frequency induction furnace is similar, both belong to the principle of electromagnetic induction.

Therefore, the heating effect produced by induction heating equipment with different frequencies is also different, which determines the heating quality.

The following is a small edition of Red Teng for you to introduce the induction heating equipment power and frequency selection method.

Frequency selection method for induction heating equipment

Induction heating equipment can be roughly divided into ultra-high frequency, high frequency, ultra-audio, intermediate frequency, etc., according to different output frequencies.

Different heating process requirements need different frequencies, if the frequency selection error can not meet the heating requirements, such as slow heating time, low efficiency, uneven heating, temperature can not meet the requirements, easy to cause damage to the workpiece.

If you want to choose the frequency correctly, first of all, you should understand the heating process requirements of the product. Roughly speaking, there are several situations:

Job diathermy

Diameter below 4mm, suitable for high frequency, ultra-high frequency (100-500KHz). The diameter of 4-16mm is suitable for high frequency (50-100KHz), the diameter of 16-40mm is suitable for super audio frequency (10-50KHz), and the diameter of 40mm is suitable for medium frequency (0.5-10KHz).

For example: fasteners, standard parts, auto parts, hardware tools, rigging, hot heading hot rolling of twist drill, the larger the diameter of the workpiece, the lower the frequency should be.

Heat treatment

Shaft, gear, quenching and stainless steel products annealing, such as quenching, for example, the workpiece requirements quenching layer is shallower, the higher the frequency should be, quenching layer is deeper, the frequency should be lower.

Quenching layer of 02.-0.8mm for 100-250KHz ultra-high frequency, high frequency. 1.0-1.5mm is suitable for 40-50KHz high frequency and super audio. 1.5-2.0mm is suitable for 20-25KHz super audio.

2.0-3.0mm is suitable for 8-20KHz super-audio and intermediate frequency, 3.0-5.0mm for 4-8KHz intermediate frequency, 5.0-8.0mm for 2.5-4KHz intermediate frequency.

Smelt precious metal

Gold, silver, copper, lead and other precious metals according to the furnace and production efficiency specific, small capacity can choose high frequency, mostly choose super audio, medium frequency.

Ultra Audio can meet the general application of die casting industry, can melt 200KG aluminum ingot per hour general application.

This is what we share today. I hope it can be helpful to you. Welcome to Luoyang Judian for more information about induction furnace.

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