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With over 40 years experience, Fives Celes is involved in most induction heating technologies in continuous heat treatment for steel strip and semi finished products
Innovative technologies have been developed to facilitate the successful integration of the inductor in the process. |
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These technologies include:
A wide range of solid state inverter
IGBT inverter
Working frequency from 0,5 to 50 kHz
MOS FET inverter
Working frequency 40 to 400 KHz
The exclusive use of MOSFET or IGBT power transistors and Fives Celes digital control system offer a working versatility and remarkable operation easiness
Remote control network is possible as per PLC selected MODBUS,PROFIBUS or ETHERNET link. The IGBT Inverter design allows Celes to guarantee a constant network power factor approx 0,95 for any power and type of strip to be processed except during the line stop and start transients.
Patented inductors specially designed for strip heating
Designed to achieve the highest performance in terms of transversal homogeneity , efficiency, and compactness
Power density up to 1Mw/m²
All inductors are designed with copper shield and short circuit rings to contain the magnetic field near the inductor, in accordance with the CE norms EN 12198
Applications
Our scope in the induction strip heating sector covers the following applications areas:
Coil coating
PMT from 90 at 300 °C
Applications drying of :
Anti finger products
Coating with and without solvents
Silicon steel Varnish
Maximum line speed over 180 M/min
Galvanizing
Temperature 450 - 500 °C
Heating under protective atmosphere
Applications:
Galvanizing Line Reheating before Zinc Pot
Heat-to-Coat
Booster heating
Temperature from 20 to 600°C
Heating with conventional inductors or under protective atmosphere
Application:
increasing power of traditional oven
Space availability
Induction strip weld annealing
Temperature
from 20 to 700 °C
Application:
HSS Steel very high strength
Silicon steel
Laser welding
Benefits of strip induction heating
The benefits of induction heating have already been proven and can be summarized as follows:
Compact heating equipment due to very high flux density
Enhanced productivity ,since thermal transient stages are significantly reduced
High flexibility ready to go operation
Low maintenance costs and extended service life
Higher product quality, heating accuracy and reproducibility
High thermal efficiency
In many cases benefits can be obtained even if induction is only a part of the overall heating capacity
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