Advanced Induction Heating Solutions for Modern Rolling Mills
Induction heating represents a highly efficient and sustainable alternative to conventional gas-fired furnaces in rolling mill applications. Designed for both full reheating and temperature boosting, induction systems provide immediate and precise heat directly within the material, eliminating warm-up times and significantly improving energy efficiency.
Saet Induction’s modular induction heating solutions, DYNAZONE LINES, are engineered to meet the demanding requirements of modern steel production.
Each system is composed of independent heating modules—each including a power generator and dedicated coils—allowing maximum flexibility, simplified maintenance, and reduced spare parts inventory.
With advanced control strategies and adaptive temperature management, our systems ensure consistent product quality while reducing operational costs and environmental impact.
Key Benefits
Fast: Instant heat generation directly in the workpiece—no furnace ramp-up required
Precise: Accurate, repeatable temperature control with multi-zone monitoring
Green: No combustion, no emissions, and significantly lower carbon footprint
Efficient: Reduced OPEX and high energy efficiency
Flexible: Modular architecture with independent module control
Uniform Heating: Axial temperature equalization and consistent head-to-tail temperature distribution
Advanced Control Features
Manual, Automatic, and Adaptive operation modes
Power-speed curve and slope control
Built-in material database
Real-time multi-zone temperature estimation
Adaptive temperature control for process optimization
Applications
Our induction technology is suitable for a wide range of long products, including:
Billets (from CCM or reheating furnaces)
Hot rolled bars
Cold rolled or drawn bars
Rebars, ingots, rails, and wires
Project Overview – Line 1
The first installation is a high-capacity induction bar heating line designed for stainless steel applications, providing reliable reheating performance in continuous operation.
System Characteristics
Equipment Type: Bar Heating Line
Material: Stainless Steel
Product Range:
Round bars: 130–160 mm
Square billets: 118–140 mm
Process: Continuous reheating
Technical Configuration
Power Supplies:
8 units
Inductors:
24 inductors (single type)
This modular configuration ensures high throughput and precise temperature consistency, making it ideal for demanding rolling mill environments.
Project Overview – Line 2
The second installation is designed as a temperature booster system for transfer bars feeding a continuous rolling mill, with a focus on process stability and controlled temperature equalization.
System Characteristics
Equipment Type: Bar Heating Line
Product Range:
Round bars: 65 mm
Square bars: 57 mm
Length: 15 m
Material: Austenitic stainless steels and nickel alloys
Process: Continuous reheating / temperature boosting
Process Description of Line 2
Bars, previously rough rolled, are fed into the induction furnace via a conveyor system. A driven multi-roll straightener and pinch roll (supplied by others) ensure proper alignment and smooth threading through the induction coils.
The system consists offour independent heating zones, where the bars are progressively heated to the required rolling temperature. Cylindrical funnels positioned between coils facilitate precise bar guidance along the line.
Temperature control is continuously monitored through optical pyrometers installed at both entry and exit points of each heating section, ensuring accurate surface temperature measurement and process visibility.
Once heated, the bars are directly transferred to the continuous rolling mill.
Technical Configuration
Power Supplies:
4 IGBT units
Inductors:
4 inductors (single type)
This solution provides optimal temperature uniformity and process integration, improving final product quality and rolling efficiency.
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Advanced Induction Heating Technologies for Industry
