Cemented carbide hardfacing technology in various fields of application

Cemented carbide hardfacing technology in various fields of applicatio
Hardfacing is the process of hardening the surface of wear-resistant parts. Hardfacing technology is often used in the production and processing of cemented carbide. Hardfacing technology can well protect the carbide wear parts and extend the service life of carbide wear parts at the same time.

1、 Application of hardfacing surfacing technology in oil drilling industry

Drill bit is a rock-breaking tool often used in the oil drilling industry, and its performance directly affects the drilling speed, drilling quality and drilling cost. In the face of the harsh environment of the oil drilling industry, drill bits are often prone to corrosion, poor impact resistance, easy to break, and cannot meet the requirements of drilling conditions. Therefore, it is necessary to choose spherical carbide and diamond with good wear resistance as the tooth surface strengthening material and use overlay welding process to complete the surface strengthening to improve the wear resistance and impact resistance of the drill bit surface by overlaying granular casting carbide on the drill bit surface.

2、 Application of hardfacing surfacing technology in the steel industry

We know that the working environment of wear-resistant parts in steel mills are very harsh. Its production process is extremely high temperature, hot and cold alternately frequently, the use of wear-resistant equipment will accelerate wear, not only will increase the maintenance costs of the steel plant will also increase the labor intensity of the staff. Therefore, most of the steel mills need to use hardfacing technology, which is to overlay cemented carbide on the surface of the scrapped rolls, until the original surface size of the rolls. This not only can reduce the production cost, but also can shorten the resumption time and make the over steel volume increase 8~10 times, which is very economical and reasonable.

3、 Application of hardfacing surfacing technology in power plants

China’s thermal power generation is the main force, it can be said that thermal power generation is the leader of the domestic power industry, which is also inseparable from China’s abundant coal resources. Thermal power generation needs to burn a large amount of pulverized coal and use vertical mill for pulverizing coal. However, due to the influence of coal quality, the impact on the vertical mill is also very serious. If it runs for a long time, it will make the surface of tungsten carbide grinding rollers appear groove-like wear, and the surface of grinding disc will also appear relatively large ring-shaped grooves, which makes the efficiency of coal mill lower and lower, thus increasing energy consumption. At this time, the hard surface overlay welding technology is used to overlay the surface of the grinding rollers and grinding discs to form a wear-resistant layer on the surface of the wear parts, which has a very good protective effect on the grinding rollers and grinding discs and can extend their service life.