Marine crankshaft forging is the core part of Marine power system, its surface treatment and coating technology is of great significance for improving product quality, prolonging service life and enhancing wear resistance. This paper will discuss the surface treatment and coating technology application of Marine crankshaft forgings.
Surface treatment technology
Sandblasting treatment: Sandblasting treatment is a common surface treatment method, through high-speed spray sand to impact the surface of the crankshaft forgings, remove the surface of the oxide, rust and other impurities, improve the surface roughness and cleanliness.
Polishing treatment: Polishing treatment can further improve the roughness of the crankshaft forging surface, improve its appearance quality and finish. Common polishing methods include mechanical polishing, chemical polishing and electrochemical polishing.
Heat treatment: By heating the crankshaft forgings to a certain temperature, and carrying out appropriate insulation and cooling, the surface structure can be changed to improve its hardness and wear resistance. Commonly used heat treatment methods include quenching, tempering and so on.
Coating technology
Coating technology: Coating technology is to cover the surface of the crankshaft forging with a layer of metal or alloy to improve its wear resistance, corrosion resistance and oxidation resistance. Common coating technologies include electroplating, electroless plating, etc.
Coating technology: Coating technology is to coat the surface of the crankshaft forgings with a layer of paint to protect it from the external environment and improve its corrosion resistance and oxidation resistance. Commonly used coating materials include paints, coatings, etc.
Ceramic coating technology: Ceramic coating technology is to coat the surface of the crankshaft forgings with a layer of ceramic material to improve its hardness, wear resistance and high temperature resistance. Commonly used ceramic materials include alumina, silicon nitride and so on.
A Marine crankshaft forgings manufacturing enterprise adopts surface treatment and coating technology to carry out a series of treatment and coating of crankshaft forgings. First, the surface is sandblasted to remove the oxide and impurities, and then polished to improve the surface finish. Then, heat treatment is used to change the surface structure and improve the hardness and wear resistance. Finally, electroplating technology is used to cover the surface of the crankshaft forgings with a layer of metal to further improve its wear and corrosion resistance. After these treatments and painting, the Marine crankshaft forgings produced by the company have excellent performance and service life, and are highly recognized by customers.
Surface treatment and coating technology of Marine crankshaft forgings is of great significance to improve product quality and service life. The surface quality and performance of crankshaft forgings can be effectively improved by reasonable selection and treatment methods. At the same time, with the continuous progress and development of science and technology, new surface treatment and coating technologies will continue to emerge, providing more options and possibilities for the production and application of Marine crankshaft forgings.
