Ship port machinery forging is the key component of ship machinery and equipment, which plays an important role in the safety and performance of the ship. However, due to the complex environment in which it is located, such as high humidity, salt, microorganisms and other factors, the forging is vulnerable to corrosion and damage. Therefore, the research on corrosion and protection of ship port mechanical forgings is of great significance for improving the safety of ships and prolonging their service life.
The corrosion of mechanical forgings in ship ports is mainly affected by electrochemical, microbial and physical factors. Among them, electrochemical corrosion is one of the main reasons, due to the contact of the metal surface with the electrolyte solution, the galvanic reaction is generated, which makes the metal ions dissolve and oxidize, resulting in the corrosion of metal materials. In addition, microbial corrosion is also a factor that cannot be ignored, especially for ships docked in the harbor, where the proliferation of Marine microorganisms will produce biological corrosion on the metal surface. In addition, physical factors such as temperature, humidity, oxygen, etc., will also affect the forging and accelerate the corrosion process.
In view of the corrosion problem of ship port mechanical forgings, the following methods can be adopted for protection:
Chemical treatment: The use of surface coating, coating, chemical conversion film and other methods to improve the corrosion resistance of metal surface. For example, the surface of the forging is coated with paint, epoxy resin and other materials, or the use of organic coating for anti-corrosion treatment.
Electroplating: Electroplating a layer of corrosion-resistant metal or non-metallic materials on the surface of the metal to enhance the corrosion resistance of the metal. For example, electrogalvanizing, chromium and other metals on the surface of forgings can effectively improve their corrosion resistance.
Modification treatment: By changing the composition or organizational structure of the metal material, improve its corrosion resistance. For example, through alloying, heat treatment, surface strengthening and other methods to improve the corrosion resistance of metal materials.
Medium treatment: By changing the medium environment of the metal surface, the occurrence of corrosion reaction is inhibited. For example, chemicals such as corrosion inhibitors and fungicides are used to reduce the corrosion rate.
In practical application, it is very important to choose the appropriate protective measures according to the specific situation. For example, for large ship port machinery forgings that are often in contact with seawater, materials such as stainless steel or nickel-based alloys with strong corrosion resistance can be used; Some key parts can be protected by surface coating, coating, chemical conversion film, etc. For the water storage system of the ship, the anti-rust water treatment method can be used.
At the same time, in order to ensure the maximum protective effect, a combination of protective measures should also be used. For example, while using stainless steel materials to make forgings, chemical coating treatment or electroplating treatment is carried out on the surface to improve its corrosion resistance. In addition, in practical applications, it is also necessary to pay attention to regular maintenance and overhaul, timely detection and repair of potential corrosion damage, in order to extend the service life of ship port mechanical forgings.
Corrosion and protection of ship port machinery forgings are important issues related to the normal operation and service life of ship machinery equipment. By deeply understanding the mechanism and causes of forging corrosion and taking effective protective measures, the influence of corrosion on ship machinery and equipment can be greatly reduced, and the safety and reliability of ships can be improved.
This paper introduces the basic knowledge, protection method and practical application effect of mechanical forgings corrosion in ship ports. Through the comprehensive application of chemical treatment, electroplating, coating and other methods, the corrosion rate of forging can be delayed to a great extent, and the corrosion resistance can be improved. At the same time, in practical applications, appropriate protective measures should be selected according to the specific situation, and regular maintenance and overhaul should be paid attention to.
