Thin Plate Online Induction Heating Production Line

1. Equipped with a tension servo control system, the tension fluctuation is controlled within 5% to prevent thin plates from stretching, wrinkling and deviation.

2. The roller table is made of wear-resistant and high-temperature resistant materials with variable frequency speed regulation. The conveying speed ranges from 0.5 to 35m/min, which can realize synchronous linkage with downstream rolling and stamping equipment.

3. Deviation correction devices and plate position detection sensors are installed to correct the lateral deviation of thin plates in real time.

1. Self-developed full-digital IGBT variable frequency power supply with an adaptive frequency range of 0.2kHz to 100kHz. It can automatically match the resonant frequency for cold and hot loads without manual opening and debugging.

2. Stepless power regulation is supported, and three closed-loop control modes including constant power, constant temperature and constant current can be switched freely.

3. The power factor is higher than 0.95 under full load conditions, requiring no additional reactive power compensation devices and reducing grid loss.

4. It is equipped with five-layer hardware protection functions including water shortage, over-temperature, over-current, phase loss and load short circuit, achieving a quick start within 0.2 seconds and 100% start-up success rate.

1. Two optional coil structures of transverse magnetic and longitudinal magnetic are available. The longitudinal magnetic structure is suitable for carbon steel and silicon steel thin plates below 750℃, while the transverse magnetic structure can reach a heating temperature of 1300℃, compatible with stainless steel, alloy steel and non-ferrous metal thin plates.

2. The coil is integrally formed with red copper tubes and equipped with an internal circulating water cooling system, ensuring no deformation during long-term continuous operation.

3. Two heating modes of full-plate uniform heating and unilateral/bilateral edge local heating are available to solve the problems of rolling edge cracking and excessive temperature difference.

4. The furnace frame adopts modular splicing structure, and the heating station length can be increased or decreased to meet different production capacity requirements.

1. Infrared thermometers collect the inlet and outlet temperature of thin plates in real time and transmit signals to the PLC system. The power is automatically adjusted according to the temperature difference, controlling the plate surface temperature difference within ±20℃.

2. The touch screen human-machine interface stores more than 100 sets of process parameter formulas, enabling one-click switching of parameters such as material, temperature and speed.

3. Signal interconnection is realized for the whole line, and the action sequence of feeding, heating, cooling and discharging is automatically matched. It supports remote data viewing and export of fault alarm records.

1. Three cooling structures including air cooling, spray water cooling and closed slow cooling are optionally configured to accurately control the cooling rate.

2. The discharging roller table undertakes the heat-treated thin plates, and is matched with recoiling machines and leveling machines to directly connect with downstream processes such as rolling, stamping and shearing.

3. An independent closed circulating cooling water system integrates filtration and heat dissipation to realize recycled water utilization.