Скачать или смотреть INDUCTION BILLET RE-HEATER FOR ROLLING MILLS

The billet hot rolling induction heating and heating production line is an efficient and precise heating technology, which is mainly used for partial or overall heating of the billet before hot rolling to ensure the temperature uniformity of the rolling process and improve product quality and production efficiency. Its main advantages are as follows:

1. High efficiency and energy saving, reducing energy consumption
Fast heating: Induction heating can make the billet reach the target temperature in a short time (several seconds to several minutes), reducing the waiting time for traditional furnace heating.

High energy efficiency: Electromagnetic induction directly acts on the billet, and the thermal efficiency can reach 60%~80%, which is much higher than gas furnace (30%~50%) or resistance furnace (40%~60%).

Precise temperature control: Only the area that needs to be heated is heated to avoid energy waste.

2. Uniform temperature to improve rolling quality
Reduce the temperature difference between the head and the tail: During the hot rolling process, the head and tail of the billet are easy to cool, and the induction heating can be accurately adjusted to ensure the temperature of the whole billet is consistent and reduce rolling defects (such as cracks and dimensional deviations).

Avoid oxidation and decarburization: Compared with gas furnaces, induction heating time is short, reducing the oxide scale and decarburization layer on the surface of the billet and improving the yield rate.

3. Flexible adaptation to different process requirements
Local heating: Selective heating can be performed on specific areas of the billet (such as the head, tail or edge) to optimize the rolling process.

Multi-specification compatibility: By adjusting the sensor parameters, it can adapt to the heating needs of billets of different sizes (square billets, slabs, etc.) and materials.

4. High degree of automation, improving production efficiency
Online heating: It can be seamlessly connected with the rolling mill production line to achieve continuous production and reduce the downtime of traditional furnace temperature regulation.

Intelligent control: Combined with PLC or AI algorithms, real-time monitoring of billet temperature and automatic adjustment of power to ensure process stability.

5. Environmentally friendly and safe, improving the working environment
No combustion exhaust gas: Compared with gas furnaces, there is no emission of harmful gases such as CO₂ and NOₓ, which meets environmental protection requirements.

Low noise and less radiation: Modern induction heating equipment has controllable noise, good electromagnetic shielding, and a safer operating environment.

6. Reduce overall costs
Reduce burnout: The oxidation burnout rate of traditional heating furnaces is about 1%~3%, while induction heating can be reduced to less than 0.5%.

Easy maintenance: The induction coil has a long life, the equipment has a compact structure, the failure rate is low, and the maintenance cost is lower than that of a gas furnace.

Typical application scenarios
Hot rolling production line: used for head and tail heating of slabs and billets to prevent rolling force fluctuations.

High alloy steel rolling: avoid internal stress cracks caused by uneven temperature.

Short process rolling: replace part of the soaking furnace and shorten the process flow.

Summary
The billet hot rolling induction heating and heating production line has the core advantages of high efficiency and energy saving, precise temperature control, flexible adaptation, and environmental protection and intelligence. It is particularly suitable for advanced steel companies with strict requirements on rolling temperature. It can significantly improve the yield rate and reduce energy consumption. It is one of the key technologies for upgrading modern hot rolling production lines.