In order to improve the corrosion resistance, wear resistance and aesthetics of aluminum forgings of construction machinery, it is necessary to carry out suitable surface treatment. Some common surface treatment techniques and their effects are described below.
- Anti-rust treatment: Because aluminum forgings are susceptible to oxidation, anti-rust treatment is required. Common methods include pickling, phosphating and so on. Pickling can remove oxides from the surface of aluminum forgings and form a dense protective film to prevent oxidation reactions. Phosphating is through a chemical reaction with aluminum to form a phosphating film, which has a good anti-rust effect.
- Electrolytic coating: Electrolytic coating is a commonly used surface treatment method, which can form a dense oxide film on the surface of aluminum forgings to improve its corrosion resistance and wear resistance. Common electrolytic coating methods include sulfuric acid oxidation method, aluminum sulfate method and so on. These methods can form a uniform and dense oxide film on the surface of aluminum, which can effectively extend the service life of aluminum forgings.
- Spraying treatment: Spraying is a common surface treatment method, which can increase the surface hardness and wear resistance of aluminum forgings by spraying paint. Common spraying materials are thermal spraying aluminum, abrasive spraying and so on. By spraying aluminum powder onto the surface of aluminum forgings at high temperature, a dense aluminum coating is formed, which has good oxidation resistance and wear resistance. Abrasive spraying is the use of jet device to spray abrasive particles to the surface of aluminum forgings, forming a layer of abrasive coating with high hardness, improve the wear resistance of aluminum forgings.
- Mechanical polishing: Mechanical polishing is a method to remove the surface roughness of aluminum forgings and improve the finish. By using grinding tools and abrasives, the surface of aluminum forgings is polished at a relatively high speed to achieve a certain brightness and smoothness. Mechanical polishing can improve the appearance quality and aesthetics of aluminum forgings.
Several common surface treatment technologies for aluminum forgings of construction machinery and their effects are introduced above. Different treatment methods have different characteristics and scope of application, it is necessary to choose the appropriate treatment method according to the specific needs. When performing surface treatment, it is also necessary to consider factors such as material, cost and environmental requirements, and with the help of professional equipment and processes to ensure the stability and reliability of the surface treatment effect. Only through scientific and reasonable surface treatment technology can the quality and performance of aluminum forgings of construction machinery be improved to meet the needs of practical applications.
