What is Common Brazing Methods for Cemented Carbide and Steel
There are several brazing methods for carbide and steel:
1. Oxygen-acetylene flame brazing.
Oxygen-acetylene flame brazing is one of the most commonly used brazing methods. Carbide brazing can use general oxygen-acetylene equipment, without adding other special equipment. According to the characteristics of the oxygen-acetylene flame, using reasonable heating methods and selecting the correct technology, high-quality cemented carbide tools can be welded.
2.High-frequency induction brazing.
High-frequency induction brazing High-frequency induction brazing uses a high-frequency induction heating power supply with a frequency of 600kHz and a power of 10-100kW to generate high-frequency current. High frequency induction brazing has fast heating speed, high efficiency, simple operation and better working conditions
3. Contact brazing
Contact brazing is carried out on a brazing machine or a butt welding machine specially used for brazing hard alloy tools. The voltage of the secondary coil of the welding transformer is less than 36V and the current is above 1000A. During brazing, the workpiece is clamped between two copper electrodes. When the strong current output by the secondary coil passes through the welding workpiece, the heat generated by the contact resistance between the cemented carbide and the steel substrate is used as the welding heat source to melt the solder.
4. Copper immersion brazing
Copper immersion brazing is to immerse the brazing part of the workpiece in the molten liquid solder, and use capillary action to make the liquid solder penetrate along the weld seam of the workpiece to achieve the purpose of brazing.
