As the key parts of the ship, the wear resistance and corrosion resistance of the Marine rudder forging are very important to ensure the safe and stable operation of the ship. In this paper, the wear resistance and corrosion resistance of Marine rudder forgings will be deeply studied, and the influencing factors and ways to improve the performance will be discussed.
Wear resistance is one of the important performance indexes of Marine rudder forgings. Rudder forgings are subject to constant friction and impact during ship sailing, so good wear resistance is required to extend service life.
Material selection: The selection of high hardness and high strength materials is the basis for improving wear resistance. Commonly used wear-resistant materials include high carbon steel, alloy steel, etc., which can obtain higher hardness and strength after proper heat treatment, thereby improving wear resistance.
Surface treatment: Surface treatment technologies such as surface coating and shot peening can improve the surface hardness and anti-friction ability of rudder forgings, thereby improving the wear resistance. Commonly used surface coating materials include metal coating and ceramic coating.
Structural design: Reasonable structural design can effectively reduce wear. For example, measures such as reducing stress concentration and optimizing lubrication systems can reduce friction and wear.
Marine rudder forgings have been in the Marine environment for a long time, and the anti-corrosion performance is very important. Corrosion will not only affect the service life of forgings, but also may cause safety problems.
Surface coating: The use of anti-corrosion coating can effectively isolate the contact between the corrosive medium and the forging surface, so as to achieve the purpose of anti-corrosion. Commonly used anti-corrosion coatings include paint, anti-rust oil and so on. In addition, surface treatment technologies such as electroplating and thermal spraying can also be used to improve corrosion resistance.
Alloying elements: Adding appropriate alloying elements in the forging process, such as chromium, nickel, etc., can improve the corrosion resistance of the material. These alloying elements can form a stable oxide film and prevent the corrosive medium from invading the matrix.
Heat treatment process: Appropriate heat treatment process can improve the corrosion resistance of the material. For example, by controlling process parameters such as cooling speed and tempering temperature, the organizational structure and surface state of the material can be changed, thereby improving the corrosion resistance.
Environmental control: During the operation of the ship, the control of environmental humidity, salinity and other parameters can effectively reduce the corrosion rate. In addition, regular cleaning and maintenance of rudder forgings to remove surface sediments and corrosion products can also extend the service life.
Wear resistance and corrosion resistance are important performance indexes of Marine rudder forgings, which are of great significance to ensure the safe and stable operation of ships. In this paper, the wear resistance is studied from the aspects of material selection, surface treatment and structure design, and the corrosion resistance is discussed from the aspects of surface coating, alloying elements and heat treatment technology. In order to further improve the wear resistance and corrosion resistance of Marine rudder forgings, future research can focus on the following aspects:
Development and application of new materials: Explore and develop new materials with higher wear resistance and corrosion resistance to meet the growing needs of the Marine industry.
Innovation in surface engineering technology: Research and development of new surface treatment and coating technologies to improve the surface properties and durability of rudder forgings.
Optimize heat treatment process: Further optimize heat treatment process parameters, achieve accurate control of material properties, improve wear resistance and corrosion resistance.
Evaluation method of corrosion resistance: Establish and perfect evaluation method and standard of corrosion resistance, provide basis for material selection and process optimization of rudder forgings.
Service life prediction: Research on service life prediction of Marine rudder system forgings is carried out to provide scientific basis for ship maintenance and overhaul.
Through in-depth research and technological innovation, it is expected to further improve the wear resistance and corrosion resistance of Marine rudder system forgings, and provide strong support for the development of Marine industry.
