Bearing ring forging is the key part of mechanical equipment, and its surface treatment technology is of great significance to improve the wear resistance, corrosion resistance and beauty of forging. This paper will introduce the common surface treatment technology and process flow of bearing ring forgings in detail.
Bearing ring forgings in the working process, not only to withstand heavy load and friction, but also may be eroded by corrosive media. Therefore, the surface of the forgings can be treated to improve the surface hardness, wear resistance and corrosion resistance, thereby extending the service life of the forgings. At the same time, reasonable surface treatment technology can also improve the beauty of forgings and enhance the market competitiveness of products.
Common surface treatment techniques
Heat treatment: Heat treatment is a way to improve its mechanical properties by changing the internal structure of the material. For bearing ring forgings, the commonly used heat treatment technologies include quenching, tempering, carburizing and so on. These treatments can improve the hardness, strength and wear resistance of forgings.
Chemical treatment: Chemical treatment is a method of modifying the surface of the forging using chemical reactions. For example, through chemical coating technology, a layer of coating with excellent wear resistance and corrosion resistance can be formed on the surface of the forging, such as galvanized, chromium plating and so on.
Electroplating: Electroplating is the process of depositing a layer of metal or alloy on the surface of the forgings using the principle of electrolysis. Electroplating technology can improve the corrosion resistance, decoration and electrical conductivity of forgings. Common electroplating techniques are zinc plating, nickel plating, chromium plating and so on.
Different surface treatment technologies have different process flows. Take heat treatment and electroplating as an example:
Heat treatment process: preparation (cleaning, inspection) → heating → insulation → cooling → post-treatment (tempering, quenching, etc.) → quality inspection.
Electroplating process: pretreatment (oil removal, rust removal) → electroplating → cleaning → drying → post-treatment (passivation, sealing, etc.) → quality inspection.
Fourth, surface treatment effect evaluation
In order to ensure the quality of surface treatment of bearing ring forgings, it is necessary to evaluate the effect of the forgings after treatment. Evaluation methods include visual observation, hardness test, corrosion resistance test, etc. Visual observation can determine whether the surface of the forging is smooth and the color is uniform; Hardness testing can detect whether the hardness of the forging surface reaches the expected; Corrosion resistance test can simulate the actual working environment to test the corrosion resistance of forging in corrosive media. Through these evaluation methods, we can fully understand the performance of bearing ring forgings after surface treatment, and provide strong support for subsequent production and application.
The surface treatment technology of bearing ring forgings is of great significance to improve the performance and service life of forgings. In the actual production process, the appropriate surface treatment technology should be selected according to the specific needs and forging material. At the same time, the surface treatment process is strictly controlled to ensure the treatment quality. Through scientific and reasonable surface treatment technology, bearing ring forgings will be able to better meet the operational needs of various mechanical equipment and promote the sustainable development of related industries.
