Neturen has developed two types multi-frequency heating technology: the hot-switching (HSW®) method and the overlap (OLP®) method that uses electric power with two frequencies (high and low) for use in its multi-frequency induction heating systems.
Multi-frequency induction heating technology is applied to induction heat treatment and makes it possible to tackle a diverse range of heating issues previously regarded as being difficult to resolve with a single-frequency power supply.
The HSW system in particular is capable of output while freely switching between two frequencies in micro-seconds (1,000th of a second). It is a new heating system that makes high-precision, induction heating possible through a wide span of heating effects.(Patent pending)
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- Low and high frequencies output alternately on the time axis
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- Low and high frequencies output simultaneously on the time axis (superimposition)
- The HSW system in particular is capable of freely switching between frequencies in micro-seconds (1,000th/sec.) during heating.
- Adjusting the ratio of the alternatively output low and high frequencies and the output times makes it possible to adjust the quenching hardness layer and heating pattern.
- Quenching at two locations is possible with no interference between coils mounted close together.
- The OLP system, capable of overlapping high and low frequencies, produces the effect of continuous multi-frequency.
- Adjusting the heating power of low and high frequencies makes it possible to adjust the quenching hardness layer depth and heating pattern.
- Neturen’s original circuit configuration has enabled us to create a simple system.
- Contour hardening of deformed parts (gears, ring gears)
- Quenching of layers with different hardness (hollow drive shafts, rack bars)
- Dual-coil quenching (Simultaneous quenching at 2 locations)
Connecting the HSW system, multi-frequency power supply, capable of realizing a effects of wide range frequency through high-speed switching of two different frequencies via a switch to multiple quenching machines, makes it possible for quenching using optimal frequencies.(Patent pending)
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- Example of a manufacturing cycle