Which welding rod should be used for underwater welding?
Ⅰ. Special requirements for underwater welding
Underwater welding refers to welding work performed in an underwater environment. Unlike welding on land, the underwater environmental conditions are more complex and the requirements for welding materials are also higher. Underwater welding requires the use of special welding materials to ensure welding quality and safety, while being able to adapt to different depths and water temperatures.
Ⅱ. Choose suitable welding materials
1. Carbon steel welding rod Suitable for deep-sea welding with water temperatures below 10°C. The weld has good toughness and heat resistance, but the disadvantage is that it is brittle and is not suitable for environments with too high water temperatures. 2. Stainless steel welding rod Suitable for welding in sea areas with higher water temperatures, such as subtropical and tropical seas. The weld surface morphology is good and the corrosion resistance is also strong, but the price is higher. 3. Durable welding rod Suitable for underwater deep-sea welding, with excellent corrosion resistance and heat resistance, and can be used for a long time in harsh marine environments, but for cheaper welding rods, the corrosion resistance is not very good. 4. Aluminum and copper welding rods Suitable for welding in sea areas with moderate water temperature, such as temperate sea areas, with high welding quality, but compared with other types of welding rods, cheap aluminum welding rods are not very corrosion-resistant and need to be used with caution.
Ⅲ. Summary
In underwater welding, it is necessary to consider the impact of different water temperatures and depths on welding materials, and choose suitable welding materials to achieve high-quality welding work. When choosing suitable welding materials, it is necessary to comprehensively consider multiple factors such as material performance, price, corrosion resistance, and service life.