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Advantages of Steel Pipe Induction Heating Equipment

Views: 0     Author: Site Editor     Publish Time: 2023-08-09      Origin: Site

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Compared with direct heating of traditional resistance furnace and flame furnace, induction heating has obvious advantages such as energy saving, environmental protection and safety. Specifically, these advantages are mainly manifested as follows.

1. High efficiency

The efficiency of induction heating is 30%-50% higher than that of flame furnace, and 20%-30% higher than that of resistance furnace, which has obvious energy-saving effect. More energy is transferred to the steel pipe, which reduces the heating time and improves the efficiency. With flexible induction coils and fast installation coils, better and faster installation and implementation process can adjust the frequency to better meet special design process requirements such as pre-weld preheating and post-weld heat treatment, stress removal, etc.

2. High heating temperature and short time

High heating temperature and short time mean fast heating.

(1) It shows that induction heating has higher working efficiency than resistance furnace and flame furnace, and the output per unit time is higher;

(2) The heating speed is fast, and the burn rate of the oxide skin on the surface of the heated metal workpiece is low, saving materials and costs, especially for precious metal heating.

3. Easy to realize automatic control

Induction heating can perform timely and precise automatic control according to the current state of the workpiece being heated, such as adjusting the power or frequency through analog or digital circuit processing, so that the heating temperature or depth of the workpiece can be automatically adjusted to meet the process requirements. The adjustment of induction heating is relatively fine. Usually, the heating power is adjusted by adjusting parameters such as phase shift and pulse duty cycle. Once the heating temperature is determined according to the process requirements, it will be kept constant at this temperature due to its own negative feedback. Realize constant power constant temperature control.

4. Improve and protect the environment

Induction heating does not produce waste gas and smoke such as carbon monoxide, carbon dioxide, sulfur oxide, etc., the external radiation heat is small, the noise is low, the working environment is purified, the air environment is protected, the working conditions of the operators are improved, and the health level is guaranteed.

5. Safe and reliable

Induction heating does not produce open flames, which eliminates the possibility of fire, explosion and other dangerous events, and greatly improves safety.

6. Easy to operate and use

The main body of the modern induction heating device is an inverter induction heating power supply with power semiconductor devices as the core structure. It can be started and shut down at any time without preheating. Due to this feature, it is not only easy to operate and use, but also saves trouble and energy.

7. The installation site occupies a small area

The modern induction heating power supply has a compact structure, and its composition is almost a modular and standardized component composition method. Compared with resistance furnaces and flame furnaces, the mass and volume are smaller, the equipment installation occupies a small area and space, and the utilization rate per unit area is high. Save space and infrastructure costs.

8. Partial heating of the workpiece can be carried out

For workpieces that are simple in shape and require local heating, induction heating has higher efficiency than resistance furnaces and flame furnaces, and local heating inductors can be made according to heating process requirements to save energy and increase production. In summary, the induction heating process parameters are highly controllable, the output product quality is good and the pass rate is high, energy saving, environmental protection, safety and reliability, it is a heating method with advanced technology and broad application prospects.

In addition to the above advantages, the off-line API steel pipe heat treatment production line annealing equipment of Hangao Tech (SEKO Machinery) has advantages that other similar equipment cannot match.

(1) Air-cooled power supply design: avoids the inconvenience caused by the low ambient temperature of the workshop and the inability to achieve water cooling.

(2) Improve the working environment: reduce the occurrence of safety accidents of steel heating equipment. Workers in the workshop do not need to be exposed to the open flame environment generated by resistance heating, no high temperature will be generated, no other gases or other substances will be generated, and the working environment will be improved.

(3) Multi-channel monitoring: It can control the maximum temperature during heating, ensure product quality, and realize perfect system monitoring and real-time protection.

(4) Using special high-temperature-resistant materials, the maximum temperature can reach 1200 degrees Celsius. The infrared temperature measuring device displays the current temperature of the steel pipe in real time, and the heating uniformity is high.

(5) Human-machine interface PLC automatic intelligent control system coordinates the speed synchronization of the whole line. The intelligent control system is connected with a temperature recorder to record the temperature record of the steel pipe during the entire heating process and automatically generate a heating curve.

If you have any questions or needs about steel pipe heat treatment, please feel free to contact us!

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