Coal drill bit welding by medium frequency induction heating machine

Coal drill bits are three small products promoted by the Ministry of Coal. There are two types of hardness. Type I is suitable for soft rock drilling, and Type II is suitable for hard rock and hard rock drilling. Because of the particularity of coal mining, coal drill bits are generally required to have the characteristics of fast drilling speed, wide drilling range, time-saving, labor-saving, simple connection, and durability. Therefore, we must use an intermediate frequency heating furnace to perform welding heat treatment on coal drill bits.

The medium frequency induction heating machine uses the principle of electromagnetic induction. By passing the current through the coil to generate a magnetic field, the magnetic field lines in the magnetic field pass through the magnetically conductive metal material to generate countless small eddy currents, and the surface temperature is raised to 500-1000 ° C in a relatively short period of time. Not only is the welding speed fast and the efficiency is high, the biggest advantage is that it saves electricity. Compared with the tube high-frequency machine, the power consumption of the same load is 60%. In addition, our medium frequency induction heating machine also has over-current, over-voltage, multiple protection functions such as overheating, very safe.

Coal drill bit welding adopts medium-frequency induction heating machine, and the welding effect is very good, which can ensure that the internal crystal structure of the metal remains unchanged, the welding range is small, and there is no obvious welding scar. In addition, the hardness of the welded coal drill bit is very high, which can meet the requirements of the coal drill bit working in the mine for a long time. The drill bit is sharp, wear-resistant and has a long service life. at present. The process of induction brazing has been widely used in various coal mines and metal mine mining industries, because of its good hardness and wear resistance, it is deeply loved by customers.