Cobalt 6 welding rod is commonly used in valves

Cobalt 6 welding rod is commonly used in valves mainly because of its excellent properties as follows:

1.Good wear resistance: The surfacing layer of cobalt 6 welding rod has a relatively high hardness and can still maintain good wear resistance when working at around 650°C. During the opening and closing process of the valve, parts such as the sealing surface, valve core, and valve seat will rub against the medium. Surfacing with cobalt 6 welding rod can effectively improve the wear resistance of these parts, reduce the degree of wear, and extend the service life of the valve.

2.Excellent corrosion resistance: Cobalt 6 welding rod has good corrosion resistance and can resist the erosion of a variety of corrosive media. During the operation of the valve, it may come into contact with various corrosive media, such as acid, alkali, and salt solutions. The surfacing layer of cobalt 6 welding rod can form a protective film in these media to prevent the base material of the valve from being corroded and ensure the sealing performance and normal operation of the valve.

3.Good thermal shock resistance: Cobalt 6 welding rod has good resistance to thermal shock. During the operation of the valve, it may experience rapid temperature changes, such as frequent switching between high-temperature media and low-temperature environments. The surfacing layer of cobalt 6 welding rod can withstand this thermal shock and is not prone to cracking and spalling, thus ensuring the reliability and stability of the valve.

4.Good high-temperature resistance: Cobalt 6 welding rod can maintain high strength and hardness at high temperatures. For some valves that work in high-temperature environments, such as high-temperature steam valves and high-temperature cracking valves in the petrochemical industry, surfacing with cobalt 6 welding rod can enable the valve to still maintain good sealing performance and mechanical properties at high temperatures, ensuring the normal operation of the valve.

5.Easy to process and weld: Cobalt 6 welding rod has good processing performance and can be processed through various processing techniques, such as turning and grinding, to meet the dimensional and precision requirements of different parts of the valve. At the same time, it is also easy to weld and can be surfacing welded by a variety of welding methods, such as oxyacetylene carburizing flame and tungsten inert gas (TIG) welding. The welding process is relatively simple, and the welding quality is easy to ensure.