Induction furnaces are indispensable heating equipment in metal melting. Taking the intermediate frequency electric furnace as an example, in the process of operation, cracks often form in the lining of the furnace due to some reasons, resulting in the leakage of molten steel, which may cause the insulation damage of the induction coil and the insulating column and the yoke, and even cause the copper tube of the induction coil to fuse so that the high-temperature molten steel is in contact with the cooling water in the induction coil, thus causing more serious consequences.
The traditional method uses mica to improve the high-temperature insulation resistance. However, the encapsulated mica has its drawbacks, first of all, the operation process is complex and cumbersome, requires a lot of labor, and the surface aesthetics is not high. What's more terrible is that mica tape is pressed with mica powder and binder, although the mica powder itself can withstand more than 600 temperatures, but the binder is usually made of silicon in the agricultural production system, and its temperature resistance becomes the bottleneck that determines the temperature resistance of mica tape, so the actual temperature resistance of mica tape is only about 200.
Wrapping mica tape cannot fundamentally solve the problem of insulation at high temperature of intermediate frequency electric furnace.
1091 high-temperature ceramic insulating coating can solve the difficult pain points of induction coil insulation at high temperature, with a maximum temperature resistance of 1800 (much higher than the highest grade of insulating paint H 180). Ceramic insulating paint not only has the advantages of good adhesion of coating, can be painted on any material to resist the current of insulation shielding at high temperature, anti-corona discharge phenomenon, but also has the advantages of ceramics: it has high mechanical strength and good chemical stability, can resist aging, water, chemical corrosion, and high thermal conductivity of the coating. 1091 ceramic insulating coating has high breakdown voltage strength, simple construction, stable use at high temperature, and prevents the breakdown of induction furnace coils, which is widely used in the metal melting industry.