Analysis of the development level of induction melting furnace technology in 2019
In 2019, the induction melting furnace technology has the international advanced technology level, mainly reflected in:
(1) In terms of high-power solid-state variable frequency power supply:
The maximum induction melting furnace power is up to 60,000 KW, which is the largest induction melting furnace that has been successfully operated in the world.
(2) In terms of dual-supply and multi-supply induction melting furnaces:
Dual-supply and multi-supply induction melting furnace technology has been widely used because it can improve equipment utilization and save investment. The number of dual power supply systems accounts for more than 70%.
(3) High power density large steel shell coreless intermediate frequency furnace:
Due to the high power density, special requirements are imposed on the structural type and structural rigidity of the coreless induction melting furnace. The power density can be as high as 1000 KW/ton, and the largest steel shell induction melting furnace has a capacity of 80 tons.
(4) The induction melting furnace uses a circuit with voltage feedback series resonance. Since the 1960s, research and development of this form of frequency conversion circuit has begun. After more than half a century of development and improvement, we have accumulated rich experience in this unique frequency conversion circuit and mastered the leading technology.
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