Zhengzhou Gou's decomposition of losses in various parts of medium frequency induction heating equipment

① Medium frequency induction heating equipment manufacturers generally use S7 and S9 energy-saving power transformers, but their low voltage is not suitable for energy saving of medium frequency induction electric furnaces and cannot achieve good results.

② The steel manufacturer chooses an inappropriate capacity, frequency and matching rated power of the medium frequency induction heating equipment, resulting in unnecessary losses.

③In the current market, on the one hand, the output of electrolytic copper cannot meet the needs of consumers; on the other hand, in order to reduce costs, most medium frequency induction furnace manufacturers use low-priced purple copper instead of No. 1 electrolytic copper, resulting in an increase in the resistance of the power supply line. Heat loss increases accordingly.

④The induction coil is a key part of the induction furnace and is the main body that transfers useful work to the heated or melted metal charge. Its ability to transmit depends on the strength of the magnetic field generated by the current passing through the induction coil, that is, the ampere-turns of the inductor. In order to obtain large heating power, the current flowing through the inductor is very large. Over the years, medium frequency induction heating equipment manufacturers have been using the traditional production model of induction coils and water cable sections. Generally, the current density of wires is greater than 25A/mmz, and the induction coils are , The cross-section of the water cable is small. Due to the influence of power factor, the actual rated current of the furnace body is 10 times of the intermediate frequency output current (full parallel capacitor type) due to the influence of power factor. The copper loss is proportional to the square of the current. These will cause the induction coil, water The cable generates a large amount of heat, and the temperature rises further. A large amount of electrical energy is converted into heat and is taken away by the circulating water and wasted. As a result, the power loss in the sensor can reach 20% to 30% of the active power of the medium-frequency induction heating equipment.

⑤The temperature of the cooling circulating water has a certain impact on the resistance of the induction coil. When the water temperature is high, the resistance value of the induction coil increases accordingly, resulting in increased losses and high heat production. Then a large amount of heat is generated to increase the water temperature, forming a vicious Circulation is very detrimental to the performance of the medium frequency induction furnace.

⑥ The scale formed in the induction coil of the medium frequency induction heating equipment blocks the circulating water path, reduces the cooling effect, increases the working temperature of the coil surface, leads to an increase in power consumption, and even causes local overheating and burns out the coil, causing an accident, and due to cooling Water has a certain electric potential, and the scale inhibition effect of existing scale inhibitors is not very obvious.

⑦The service life of the furnace lining of the medium frequency induction heating equipment has an impact on the power consumption of furnace construction. A long furnace lining life will reduce the power consumption of furnace construction. Therefore, the material selection of the furnace lining and the furnace building and baking process should be improved.

⑧The quality of the medium-frequency induction circuit melting process is also directly related to the power consumption of the electric furnace. There are considerable problems in whether the ingredients are reasonable, the length of the melting time, and whether the melting is continuous, resulting in unnecessary losses. Some factories do not pay considerable attention to the maintenance of medium-frequency induction heating equipment, causing the furnace body, power supply system, etc. to not operate normally, and the corresponding losses increase.

If you want to know more about medium frequency induction heating equipment, you can contact us, Zhengzhou Gaoshi. The Zhengzhou Gou's medium frequency induction heating equipment we produce has: 1. High power, low frequency and good heat permeability. 2. It adopts IGBT solid-state inverter, which has high efficiency and low power consumption. It saves 10 to 30% of power than thyristor intermediate frequency equipment. 3. Compared with other heating methods, it can significantly improve economic benefits, improve the quality of processed parts, save energy and raw materials, reduce labor intensity, and improve the production environment. Welcome to call us for consultation.