Forever Electromechanical Launches Technical Upgrade for Continuous Heating and Pre‑heating of Square Billets

Forever Electromechanical, a leading original manufacturer of induction heating equipment, has officially launched the upgraded solution for

continuous heating and preheating of square billets. This new iteration targets long‑standing industry pain points including inconsistent pre‑heating effect, large cross‑section temperature deviation, high energy loss and frequent manual intervention. By optimizing IGBT power unit, segmented pre‑heating structure and digital closed‑loop control system, the upgraded production line delivers stable pre‑heating & through‑heating performance for square billets, bringing higher‑efficiency, low‑carbon processing options for hot forging and hot‑rolling enterprises worldwide.

1. Core Technical Iteration: Segmented Pre‑heating & Continuous Through‑heating Structure

Traditional square billet heating equipment usually adopts single‑zone heating mode. Cold billets directly enter high‑temperature heating section, resulting in internal‑external thermal stress, uneven temperature and heavy oxide scale. Forever Electromechanical re‑designed the whole heating furnace layout, adopting multi‑stage segmented pre‑heating plus continuous reheating combined structure.

In the pre‑heating zone, low‑power gradual temperature rise reduces thermal shock for incoming cold square billets. The subsequent continuous heating section completes rapid through‑heating. Billet feeding speed, pre‑heating power and reheating output are dynamically matched. The whole line realizes seamless transition from room‑temperature pre‑heating to target forging temperature. It can connect with upstream continuous casting equipment and downstream forging or rolling mill, supporting fully‑uninterrupted mass production without frequent start‑stop operation.

The upgraded induction coil applies finite‑element simulation optimization, high‑conductivity oxygen‑free copper material plus multi‑layer magnetic shielding structure. Magnetic flux leakage is greatly suppressed, improving electromagnetic utilization ratio and lowering surface heat loss of furnace bodyforeverfur....

2. Key Performance Parameters of Upgraded Square Billet Heating & Pre‑heating Line

• Applicable billet specification: square billet cross‑section 40 mm‑350 mm; billet length 0.5‑12 m

• Production capacity range: 1‑45 tons per hour, supporting 24‑hour continuous running

• Outlet target temperature: 900℃‑1250℃ adjustable; stable forging temperature 1100‑1150℃

• Cross‑section temperature deviation: ≤ ±8℃ after pre‑heating & reheating

• Power supply type: full‑digital ; power factor ≥0.97 IGBT medium frequency induction heating power supply

• Heating material: carbon steel, alloy structural steel, bearing steel and other square billet blanks

• Control mode: PLC + infrared real‑time temperature measurement, closed‑loop automatic power adjustment

  
  

3. Outstanding Competitive Advantages Brought by Upgrade

First of all, obvious energy‑saving benefit. Thanks to IGBT power cabinet and segmented pre‑heating layout, no‑load power consumption is eliminated. Comprehensive power consumption decreases by 18‑28 % compared with old‑generation single‑zone heating furnaces, cutting long‑term production cost for steel processing plants.

Secondly, lower oxidation loss. Gentle segmented pre‑heating avoids sharp temperature jump. Oxide scale loss is effectively reduced, improving finished‑billet yield and decreasing raw material waste.

Thirdly, intelligent unmanned operation. Real‑time infrared temperature feedback feeds back to control system. Equipment automatically adjusts pre‑heating power, reheating output and line speed according to billet size, steel grade and incoming temperature. Functions including fault early warning, operation data recording and remote monitoring are integrated, lowering skill requirement for on‑site operators.

Fourthly, strong compatibility. The production line can adapt multiple square billet sizes without large‑scale mechanical modification. Quick parameter switching supports mixed‑material and mixed‑specification production for forging workshops.

4. Market Application Prospect

At present, the upgraded steel billet electric induction heating machine has passed full‑load factory acceptance test. It will be delivered to overseas metallurgy and forging projects in batches. Facing global trend of green manufacturing, induction heating equipment replaces traditional gas furnaces step‑by‑step. Forever Electromechanical will keep optimizing induction heating solutions for square billets, round billets and special‑shaped blanks, providing reliable customized thermal‑processing equipment for global customers in forging, rolling and metal heat‑treatment sectors.