Working Principle and Application of Intermediate Frequency Melting Furnace
Intermediate frequency induction melting has fast heating speed, high efficiency, less burning loss, less sultry loss, relatively low workshop temperature, reducing smoke and dust, saving energy, improving productivity, improving labor conditions, reducing labor intensity, and purifying the workshop environment. Especially for cast iron, the induction melting furnace is beneficial to obtain low-sulfur molten iron, which is unmatched by cupola furnaces. Next, the editor will take netizens to understand the working principle and application of the intermediate frequency induction melting furnace. Intermediate frequency induction melting furnace Working principle and application of intermediate frequency induction melting furnace: Intermediate frequency induction melting furnace is currently the induction heating equipment with the highest heating efficiency, fastest speed, low consumption, energy saving and environmental protection for metal materials. Main working principle: The high-frequency high current of the medium frequency flows to the heating coil (usually made of copper tube) which is wound into a ring or other shapes. As a result, a strong magnetic beam with an instantaneous change in polarity is generated in the coil. When a heated object such as a metal is placed in the coil, the magnetic beam will penetrate the entire heated object, and in the opposite direction of the heating current inside the heated object, it will generate Correspondingly large eddy currents. Due to the existence of resistance in the heated object, a lot of Joule heat will be generated, and the temperature of the object itself will rise rapidly. To achieve the purpose of heating all metal materials. The intermediate frequency power supply is a kind of inverter power supply. It first rectifies the three-phase alternating current (using thyristors) into single-phase direct current, and then inverts it into a 500-1000Hz pulse alternating current by the inverter bridge, and then passes through the copper in the furnace. The ring makes the steel in the ring generate eddy current to generate heat, so as to achieve the purpose of smelting steel. Intermediate frequency induction melting furnaces and intermediate frequency power sources are widely used in forging heating of non-ferrous metals and overall quenching and tempering of metal materials. Intermediate frequency induction melting furnace Slag removal and furnace repair of intermediate frequency induction melting furnace: The intermediate frequency induction melting furnace has high productivity, and the melting period can be shortened to about 35min. In order to maximize the use of the power of the furnace, it is necessary to remove the slag as quickly as possible. The use of skimmer or manual slag removal has poor effect, long time and poor working conditions. To this end, a method of backward pouring out the slag from the furnace is proposed, that is, the furnace body is tilted back by 20-25°, and the slag is poured into the transport car through the slot behind the top of the furnace body. This method is quick and convenient. After the intermediate frequency induction melting furnace works for one furnace, the furnace must be repaired. In order to shorten the downtime for replacing the lining refractories, mechanized means must be adopted, and the vibrating furnace building machine and the furnace lining extruder have become the main accessories of the large-scale intermediate frequency induction melting furnace. The furnace lining pusher can push out the furnace lining refractories when they are not completely cooled, further shortening the furnace repair time and improving the working environment. I believe that netizens who have read the above introduction carefully have a certain understanding of the working principle and application of the intermediate frequency induction melting furnace! Netizens should be reminded that after using the intermediate frequency induction melting furnace, they must pay attention to slag removal and furnace repair. Oh!