long bar induction quenching and tempering production line

The high-power long bar induction quenching and tempering production line is a key equipment for large-scale quenching and tempering treatment of Φ 20-150mm steel bars. Its configuration scheme directly determines the production capacity, energy consumption, and product quality. As a non-standard customized device, its core components usually include the following parts.

Power System

The commonly used power range for high-power quenched and tempered wires is 1600-5000kW, with a frequency of 2-6kHz. Series power supply is a common configuration with the advantages of high power factor and low harmonics, making it more energy-efficient for long-term operation.

Induction heater

The multi zone circular sensor is the core component, usually divided into 3-5 zones for independent power regulation. Through electromagnetic field simulation design, ensure the uniformity of heat transfer of steel bars. Combined with water cooling system and quick change structure, it can adapt to the production of steel bars with different diameters.

Roller conveyor system

Driven by an independent motor, the roller angle is maintained at 18-21 ° to ensure that the steel bars rotate and are heated during transportation, avoiding local overheating. The roller material is mostly stainless steel or wear-resistant steel, which improves its service life.

Spray cooling system

The annular spray device is arranged in sections, with a cooling pressure of 0.3-0.5MPa. By automatically controlling the valve through PLC, the flow rate and cooling speed can be precisely adjusted to obtain the desired depth of the quenching layer.

Tempering system

High power production lines often use induction tempering, with temperature control between 500-650 ℃, fast heating and high temperature control accuracy, suitable for continuous production.

Control and detection system

Equipped with PLC automation control, equipped with infrared temperature measurement, flow monitoring, and energy consumption recording modules. Some projects are also equipped with a process database, which allows for one click switching of processes based on steel grade.

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