Introduction to manganese phosphating bearings and their features

Jul 10, 2024

In modern industrial production, bearings are indispensable parts of mechanical equipment. The stability and durability of their performance have a vital impact on the overall operating efficiency and life of the equipment. In order to improve the wear resistance and corrosion resistance ability of bearings and reduce the friction coefficient, researchers are constantly exploring new bearing surface treatment technologies. Among them, manganese phosphating technology, as an effective surface modification method, is widely used in the manufacturing process of bearings, forming manganese phosphating bearings.

1. Principle of manganese phosphating

Manganese phosphating technology immerses the bearing material in a phosphating solution containing manganese salts, phosphates, and other components. It reacts chemically under certain conditions to form a dense manganese phosphating film on the bearing surface. The phosphating film is mainly composed of manganese phosphate and other metal phosphates and has good corrosion resistance, wear resistance, and lubricity. The formation process of manganese phosphating film involves multiple chemical reaction steps, including metal dissolution, phosphate adsorption, nucleation, and growth. During the phosphating process, the thickness, structure, and performance of the phosphating film can be adjusted by controlling the reaction conditions (such as temperature, time, phosphating solution concentration, etc.).

2. Characteristics of manganese phosphate bearings

Excellent corrosion resistance: Manganese phosphate film can effectively prevent the corrosive medium in the environment from corroding the bearing surface and improve the corrosion resistance of the bearing.

Good wear resistance: The phosphate film has high hardness and toughness, can resist the wear and scratches caused by the bearing during operation, and extend the service life of the bearing.

Low friction coefficient: Manganese phosphate film has excellent lubrication performance, can reduce the friction coefficient of the bearing during operation, and reduces energy loss and heat generation.

Good adhesion: The phosphate film forms a chemical bond with the bearing matrix, has high adhesion strength, and is not easy to peel off.

Adjustable performance: By adjusting the phosphating process parameters, the thickness, structure and performance of the phosphate film can be controlled to meet the use requirements of the bearing under different working conditions.

3. Preparation process of manganese phosphate bearings

The preparation process of manganese phosphate bearings mainly includes the following steps:

Pretreatment: The bearing material is cleaned, degreased, de-rusted, and other pretreatments are performed to ensure the quality of the phosphate film.

Phosphating treatment: immerse the pretreated bearing in the phosphating solution and carry out the phosphating reaction at a certain temperature and time. The formula and concentration of the phosphating solution have an important influence on the performance of the phosphating film.

Cleaning and drying: After the phosphating is completed, take the bearing out of the phosphating solution, rinse it with clean water, and dry it.

Post-treatment: As needed, the phosphate bearing can be further surface treated, such as oiling, painting, etc., to improve its corrosion resistance ability and wear resistance ability.

4. Performance and application of manganese phosphating bearings

Manganese phosphating bearings have excellent corrosion resistance, wear resistance, and lubrication properties and are widely used in various mechanical equipment. For example, in the automotive industry, manganese phosphating bearings can be used for key components such as engine connecting rods and crankshafts; in the metallurgical industry, they can be used for bearings of equipment such as rolling mills and continuous casting machines; in the petrochemical industry, they can be used for bearings of equipment such as pumps and compressors. In addition, manganese phosphating bearings are also widely used in aerospace, shipbuilding, power and other fields.

5. Development trend of manganese phosphating bearings

With the continuous development of science and technology and the improvement of industrialization, the requirements for bearing performance are getting higher and higher. As a high-performance bearing product, the market demand for manganese phosphating bearings is growing. In the future, the development trend of manganese phosphating bearings mainly includes the following aspects:

Environmental protection and energy saving: With the improvement of people's environmental awareness, the environmental protection requirements in the bearing production process are also getting higher and higher. Therefore, the study of environmentally friendly phosphating agents and phosphating processes will be an important direction in the future.

High performance: In order to meet more demanding working conditions, it is necessary to study manganese phosphating bearings with higher wear resistance, corrosion resistance and lubrication performance.

Intelligence: Apply intelligent technology to the manufacturing and testing process of bearings to improve production efficiency and product quality.

Customization: Provide customized manganese phosphating bearing products according to the needs and working conditions of different customers.

As a high-performance bearing product, manganese phosphating bearings have broad application prospects in modern industrial production. By continuously optimizing the phosphating process and formula and improving the performance and quality of the phosphating film, the development, and application of manganese phosphating bearings will be further promoted.