Multi-frequency Heating Technology
Neturen has developed two types of multi-frequency heating technology that uses electric power with two frequencies (High and low) for use in its multi-frequency heating systems: The hot-switching (HSW®) method and the overlap (OLP®) method.
Multi-frequency heating technology is applied to high-frequency heat treatment and makes it possible to tackle diverse 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 (1000th of a second) and is a new multi-frequency heating system that makes high-precision, high-frequency heating possible through a wide diversity of heating effects (patented)
Hot-switching (HSW) system
- The HSW system in particular is capable of freely switching between frequencies in micro-seconds (1000th of a second) 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 in close proximity.
Overlap (OLP) system
- Capable of overlapping of high and low frequencies, the OLP system is realizes continuous multi-frequency effects.
- Adjusting the heating power of the low and high frequencies makes it possible to adjust the quenching hardness layer and heating pattern.
- Neturen’s original circuit configuration has enabled the realization of a simple system.
Examples of Application
・Contour quenching 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)
Multi-frequency Multi-machine Quenching System
Connection of the HSW system multi-frequency power supply capable of realizing a wide range of frequency effects through high-speed switching of 2 different frequencies via a switch to multiple quenching machines enables the realization of quenching by each machine at ideal frequencies. (Patent pending)
Example of manufacturing cycle