Aluminum forgings of construction machinery often face the challenge of wear and corrosion in the process of use, in order to enhance its wear resistance and corrosion resistance, a series of effective methods need to be taken. This paper will introduce some methods to improve the wear resistance and corrosion resistance of aluminum forgings in construction machinery from three aspects: material selection, surface treatment and coating protection.
First of all, when selecting materials, priority should be given to aluminum alloy materials with good wear resistance and corrosion resistance. Adding appropriate alloying elements to aluminum alloy material can significantly improve its physical and chemical properties, improve its wear resistance and corrosion resistance. Commonly used additions include silicon, magnesium, copper and zinc, which increase the hardness and strength of the material and provide better wear and corrosion resistance.
Secondly, proper surface treatment of construction machinery aluminum forgings can effectively improve its wear resistance and corrosion resistance. Common surface treatment methods include anodic oxidation, chromium plating, electroless plating, etc. Anodizing is a common surface treatment method that can form a dense oxide film on the surface of aluminum forgings, which can not only improve its wear resistance and corrosion resistance, but also increase the hardness and lubricity of the material surface. Chromium plating is another commonly used surface treatment method, chromium has good corrosion resistance, can effectively protect the surface of aluminum forgings from corrosion and wear. Electroless plating provides additional wear and corrosion protection by forming a thin, uniform metal coating on the surface of the aluminum forgings.
In addition, the use of coating protection is another effective way to enhance the wear resistance and corrosion resistance of aluminum forgings of construction machinery. Commonly used coating materials include paint, film, rubber and ceramics. Painting is the most common coating method to provide a protective film for aluminum forgings, effectively isolating their contact with the external environment and reducing the impact of wear and corrosion. Film coating is more wear-resistant and corrosion resistant, the common coating materials are polyurethane, epoxy resin, etc., which can form a strong protective layer on the surface of aluminum forgings. Rubber and ceramic coatings are also widely used in some aluminum forgings of construction machinery that require special requirements, and they have good wear resistance and corrosion resistance.
In summary, the methods to improve the wear resistance and corrosion resistance of aluminum forgings of construction machinery mainly include the selection of aluminum alloy materials with good properties, appropriate surface treatment and the use of coating protection. Through a reasonable combination of these methods, the overall performance of aluminum forgings can be significantly improved, its service life can be extended, maintenance costs can be reduced, and the reliability and safety of construction machinery can be guaranteed.
