Warm forging process is an advanced metal forming technology, which is widely used in manufacturing various auto parts and mechanical parts. However, warm forging often faces the challenge of surface quality and corrosion resistance in the production process. This paper will discuss the surface treatment skills and anti-corrosion measures of warm forging forgings to improve product quality and service life.
Warm forging forging surface treatment skills
Cleaning and oil removal: During the warm forging process, some oxides, oils and other contaminants may be attached to the surface of the forging. In order to obtain good surface quality, cleaning and oil removal treatment must be carried out. Common methods include mechanical cleaning (such as sandblasting, polishing), chemical cleaning (such as pickling, alkali washing), and cleaning with cleaning agents.
Straightening and leveling: Due to the plastic deformation of the metal during warm forging, the forging may have bending, twisting and other shape defects. The shape accuracy and flatness of forgings can be improved effectively by straightening and leveling. Common methods include mechanical straightening, hydraulic straightening, and heat treatment levelling.
Finishing and polishing: In order to further improve the surface quality of forgings, finishing and polishing can be carried out. This can not only remove the surface of the fine unevenness and scratches, but also improve the surface finish and beauty. Common methods include mechanical polishing, chemical polishing and electrolytic polishing.
Rust prevention and lubrication: In order to protect the surface of the forgings from oxidation and rust, rust prevention and lubrication are required in the surface treatment process. Common methods include applying anti-rust oil, spraying anti-rust agent and using lubricants. These measures can form a protective film on the surface of the forgings to isolate air and moisture, thereby extending the service life of the forgings.
Anti-corrosion measures of warm forging forgings
Material selection: The selection of metal materials with good corrosion resistance is the key to prevent forging corrosion. For example, stainless steel, aluminum alloy and other metal materials have excellent corrosion resistance and are suitable for manufacturing forgings that require long-term exposure to harsh environments.
Heat treatment: Through heat treatment, the microstructure and properties of the metal can be changed, thereby improving its corrosion resistance. For example, heat treatment processes such as quenching and tempering can improve the crystal structure and hardness of metals and improve their corrosion resistance.
Coating protection: Coating the surface of the forging with a coating with corrosion resistance is a common anti-corrosion measure. Commonly used coatings include paints, plastics, ceramics, etc. These coatings can effectively isolate the contact between the external corrosive medium and the metal matrix, thereby extending the service life of the forging.
Electrochemical protection: Electrochemical protection is a method that uses electrochemical principles to prevent metal corrosion. For example, cathodic protection prevents corrosion by applying an impressed current to a metal surface to keep it in a cathode state. Anodic protection is to prevent corrosion by keeping the metal in an anodic state and forming a dense oxide protective film.
Environmental control: Controlling the storage and use of forgings is one of the important measures to prevent corrosion. For example, keeping the storage environment dry, well ventilated, and avoiding contact with corrosive media can effectively extend the service life of forgings.
Surface treatment techniques and anti-corrosion measures of warm forging forging are of great significance for improving product quality and service life. By selecting appropriate treatment methods and materials, the surface quality and anti-corrosion properties of forgings can be effectively improved to meet the needs of various applications. At the same time, strengthening technology research and development and innovation is also one of the important driving forces to promote the continuous development of warm forging process.
