Corrosion And Erosion Types

Corrosion and erosion types
Corrosion is a major concern when it comes to compressors, as it can affect their efficiency and lifespan. There are two main types of compressor corrosion: comprehensive (uniform) corrosion and local corrosion. The former occurs across the entire surface of the compressor, while the latter is more localized, such as pore corrosion or intergranular corrosion.

 

One effective method for preventing compressor corrosion is to use polymer composite materials for an organic coating on the surface. These coatings offer exceptional chemical resistance, great mechanical properties, and strong adhesive properties. In contrast to traditional welding repairs for pressure vessels, this approach is relatively simple, low-cost, and produces excellent repair results. By applying a high-quality protective coating to the compressor, it can avoid undesirable chemical reactions and other forms of corrosive damage, ensuring that it lasts longer and operates more efficiently.

 

Shell crack rupture
Compressor components may encounter cracks or fractures due to various causes, such as casting and machining defects, internal stress, and overload operation. Traditionally, welding was used to repair such damages. However, some parts are made of cast iron, aluminum alloy, or titanium alloy, which makes welding difficult. Moreover, there are also hazardous situations that could lead to explosions, making welding an unsuitable repair method. Fortunately, the new "cold welding" technology provides a viable alternative to welding. This technique avoids thermal stress deformation and yields good material adhesion. The resultant product also has excellent mechanical and corrosion resistance properties, thereby fully meeting the compressor's usage requirements and ensuring the lowest operation costs.