The surface hardening technology of motorcycle magnesium alloy forgings is an important method to improve the wear resistance and corrosion resistance of parts. This paper will analyze the surface hardening technology principle of motorcycle magnesium alloy forgings and its common application methods.
First, surface hardening technology principle:
By forming a protective layer with high hardness on the surface of motorcycle magnesium alloy forgings, the surface hardening technology can improve its anti-wear, anti-corrosion and anti-fatigue properties. Common surface hardening techniques include work hardening, electroless plating hardening, heat treatment hardening and coating hardening.
- Mechanical work hardening: By rolling, grinding or shot blasting the surface of motorcycle magnesium alloy forgings, the surface is cold deformed, and the crystal structure is rearranged to improve the surface hardness.
- Electroless plating hardening: The method of electrochemical or chemical reaction is used to form a protective layer of ceramic or metal compounds on the surface of motorcycle magnesium alloy forgings, such as chromium plating, anodic oxidation, etc., to increase surface hardness and corrosion resistance.
- Heat treatment hardening: The use of heat treatment processes, such as solid solution treatment, aging treatment, etc., to change the crystal structure and phase composition of motorcycle magnesium alloy forgings, improve hardness and strength.
- Coating hardening: Coating a layer of ceramic or metal materials on the surface of motorcycle magnesium alloy forgings, such as spinel coating, tantalum coating, etc., to form a protective layer with high hardness, improve wear resistance and corrosion resistance.
Second, the common surface hardening technology application method:
- Electroplating technology: Through the method of electrolytic deposition, a protective layer of metal, such as chromium and nickel, is plated on the surface of motorcycle magnesium alloy forgings. It has high hardness and good corrosion resistance.
- Anodizing technology: Through anodizing in an acidic solution, a dense oxide film is formed on the surface of motorcycle magnesium alloy forgings to improve hardness and corrosion resistance.
- Spraying technology: Spraying equipment is used to spray ceramic or metal materials on the surface of motorcycle magnesium alloy forgings to form a protective layer with high hardness and improve wear resistance and corrosion resistance.
- Nitriding and carbonitriding technology: Through nitriding or carbonitriding treatment in high temperature and high pressure atmosphere, nitrogen or carbonitriding will penetrate into the surface of motorcycle magnesium alloy forgings to form a nitriding layer or carbonitriding layer with high hardness, and improve wear resistance.
In short, the surface hardening technology of motorcycle magnesium alloy forgings can effectively improve its wear resistance and corrosion resistance. According to the specific needs and process conditions, the choice of appropriate surface hardening technology can provide longer service life and better performance for motorcycles. In practical applications, comprehensive consideration is needed according to the specific situation, and appropriate pretreatment and follow-up treatment processes are taken to ensure the stability and reliability of surface hardening technology.
