+86 133 0307 8975
+86 133 0307 8975
May. 05, 2026
The traditional steel billet induction preheating machines in forging workshops generally adopt old thyristor power supply and open-loop fixed-power heating mode. Long-term continuous operation brings many problems: low power factor, large reactive power loss, serious electromagnetic leakage, and high comprehensive power consumption. The original heating coil has unreasonable structural design, serious surface heat dissipation, poor billet core penetration effect, obvious temperature difference between head, tail, surface and core. It often causes surface overheating, core underheating, increased oxidation burning loss, reduced forging qualification rate. In addition, the old cooling system has low heat exchange efficiency, the main unit frequently alarms for over temperature and over current, high failure rate, long shutdown maintenance time, which seriously restricts the stable output of the forging production line. Forever Electromechanical launches targeted energy-saving renovation for old billet preheating equipment to solve high energy consumption and unstable operation in one stop.
steel billet induction preheating machine
First, remove the old thyristor cabinet and fully upgrade to Forever digital IGBT medium-frequency energy-saving power supply. The power factor is stably increased to above 0.95, reactive power consumption is greatly reduced, and no additional reactive compensation equipment is needed. Second, redesign magnetic field simulation, replace customized high-efficiency water-cooled integrated induction coils, optimize turn spacing and magnetic circuit matching, cut electromagnetic leakage loss, and realize uniform deep penetration heating of steel billets. Third, add infrared online temperature closed-loop system, automatically adjust power and frequency according to billet size and feeding speed, avoid invalid no-load power consumption. Fourth, renovate closed constant-temperature circulating water cooling system to improve heat dissipation efficiency and extend the service life of power supply and coils. Finally, calibrate the synchronous linkage of the feeding roller table to match the optimal heating rhythm.
After Forever energy-saving renovation, the comprehensive power-saving rate reaches 20%–30%, the monthly electricity cost is effectively controlled. The billet overall temperature difference is controlled within ±10℃, oxidation burning loss is reduced, and forging yield is significantly improved. The equipment runs smoothly with low failure rate, no frequent over-temperature and over-current faults. The whole transformation does not dismantle the furnace body, short construction period, no long-term production shutdown. Forever Electromechanical provides one-stop service including on-site survey, scheme design, installation, commissioning and long-term after-sales warranty, helping enterprises reduce costs, increase efficiency, and meet green low-carbon production standards with rapid investment return.
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Tel.:+86 133 0307 8975
E-mail: tom@foreverfurnace.com
WhatsApp: +86 133 0307 8975
Add.: Wuqiao Economic Development Zone, Hebei Province, China, Cangzhou, Hebei, China
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