Marine diesel engine forgings are important parts in Marine power system, and their material properties and wear resistance have important effects on the performance and reliability of diesel engines. This paper will study the material properties and wear resistance of Marine diesel engine forgings, analyze the influencing factors, and put forward the corresponding improvement measures.
Material properties of Marine diesel engine forgings
Strength and toughness
Marine diesel engine forgings need to withstand high strength load and impact, so their materials should have high strength and toughness. Commonly used materials are high-strength steel, alloy steel, etc. These materials can obtain good strength and toughness through reasonable heat treatment process.
Corrosion resistance
Marine diesel engine forgings have been in the harsh environment such as damp and salt spray for a long time, so their materials should have good corrosion resistance. Commonly used corrosion resistant materials are stainless steel, aluminum alloy, etc. These materials can enhance their corrosion resistance through surface treatment, coating and other measures.
Thermal stability
Marine diesel engine will produce high temperature in the working process, so its material should have good thermal stability. Commonly used thermal stability materials are superalloys, titanium alloys, etc., which can maintain good mechanical properties and corrosion resistance at high temperatures.
Study on wear resistance of Marine diesel forgings
Wear mechanism
The wear of Marine diesel engine forgings is mainly divided into abrasive wear, fatigue wear and corrosion wear. Abrasive wear is caused by the friction between metal surface and hard particles. Fatigue wear is caused by the action of alternating stress. Corrosion wear is caused by the interaction between the metal surface and the corrosive medium.
Influencing factors of wear resistance
The wear resistance of Marine diesel engine forgings is affected by many factors, such as material hardness, microstructure, surface treatment and so on. The higher the hardness of the material, the better the wear resistance; The more uniform the structure, the better the wear resistance; Surface treatment can change the surface morphology and chemical composition of the material, thus affecting the wear resistance.
Wear resistance improvement measure
In order to improve the wear resistance of Marine diesel forgings, the following measures can be taken: select materials with high hardness and high strength; Optimize the structure, improve the uniformity and density of the material; Using surface treatment technology, such as shot peening, carburizing quenching, etc., to improve the surface hardness and wear resistance of the material.
The material properties and wear resistance of Marine diesel engine forgings have important effects on the performance and reliability of diesel engines. By studying the material properties and wear mechanism, the corresponding improvement measures can be put forward to improve the wear resistance and service life of Marine diesel engine forgings. This is of great significance to improve the competitiveness of the ship industry.
