Introduction to Electromagnetic Heating Technology
1. Heating principle
Electromagnetic induction heating is a heating method that utilizes the principle of electromagnetic induction to convert electrical energy into thermal energy. Electromagnetic induction heating is the process of50/60HZ AC power is rectified into DC power, which is then converted into a high-frequency current with a frequency of 20-40KHZ. The rapidly changing high-frequency high-voltage current flowing through the coil generates a rapidly changing alternating magnetic field. When the magnetic field lines in the magnetic field pass through the conductive metal material, countless small eddy currents are generated inside the metal, causing the metal material to generate high-speed heat on its own.
Electromagnetic heating is a heating method that converts electrical energy into magnetic energy, causing the heated steel body to sense magnetic energy and generate heat. This method fundamentally solves the problem of low efficiency of resistance heating through thermal conduction, such as electric heating plates and electric coils.
1. The difference between electromagnetic heating technology and resistance (electric heating tube) heating method:
1.1. Compared with traditional resistance (electric heating tube) heating methods, this technology has the following advantages:
①. The actual energy-saving effect has reached 20%, reducing production costs;
②. Under the same conditions, the preheating time is shorter, which is 2/3 shorter than that of resistance (electric heating tube) heating, saving production time
③. Using direct radiation heat, with low heat loss, fast temperature rise, and a power saving rate of over 25%.
④. The surface temperature of the heating part has been reduced to about 60 ℃ -80 ℃, which is touchable to the human body and provides a comfortable working environment temperature. Compared with the resistance heating method, it has been significantly improved and can save a lot of ventilation and cooling costs for enterprises
3. Advantages of electromagnetic induction heating equipment:
3.1. Electromagnetic induction heating equipment: It is a special equipment that converts electrical energy into thermal energy. It uses direct thermal radiation heating to induce magnetic energy in the heated steel body and generate heat, making the heating speed faster, more uniform, and the heating temperature higher, reaching over 500 ℃.
3.2. Electromagnetic induction heating equipment has the following advantages:
①. Effective energy saving: The thermal efficiency can reach over 98%, and under the same conditions, the heating method of resistance (electric heating tube) can save more than 30% electricity.
②. High power saving rate: using direct radiation heat, with small heat loss and fast temperature rise. The transformer has increased its flexibility, allowing for the addition of more production equipment without increasing the number of transformers.
③. Isolation heating, only heating the simplified form, safely isolated from the heat transfer oil. avoidresistance(Electric heating tube)Electric leakage causes a fire.
④. Reduce maintenance costs, ensure no damage to heating cables, avoid frequent replacement of resistors (electric heating tubes), and overcome the problem of carbon deposition caused by high temperatures in resistors (electric heating tubes).
⑤. The temperature control is effective, with a temperature difference of ≤± 1 C, which can achieve high temperature heating. It can be heated to 400 ℃ to 600 ℃ when the heat transfer oil allows.High stability:Adapt to user requirements24-hour continuous operation capability.
⑥. The circuit adopts digital fast and effective control, using domestic 1G8T modules, and the circuit is stable.
⑦. Improve the working environment, reduce heat dissipation, and keep the outer surface of the heating cylinder almost at room temperature.
