Post-Treatment Process of Powder Metallurgy Products
Powder metallurgy products have broad application prospects due to its advantages such as large-scale production, high efficiency and low cost. The performance of powder metallurgy products is affected by the post-treatment process. In the post-treatment process, the repeatability, precision and service life of the product are ensured with lower production cost. This article mainly introduces the requirements and methods of post-treatment process of powder metallurgy products.
First of all, the requirements of post-treatment process for powder metallurgy products include surface cleaning and lubrication. The surface of the product should be thoroughly cleaned to remove impurities, dust, oil and other substances to remove the rust layer, oily film and other harmful substances that are attached to the surface. The distance between the surface of the steel product and the surface of the mold should be as small as possible to ensure the tightness of the processing surface. Furthermore, the lubrication is of great importance to reduce the wear between the surface of the product and the inner wall of the mold or the punch, and to improve the surface quality of the product.
In terms of the methods of post-treatment process for powder metallurgy products, the commonly used post-treatment methods include mechanical polishing, heat treatment, galvanizing and oil plating. For some products that are characterized by flatness and high precision, mechanical polishing is adopted to improve the surface roughness and minimize the burrs. During the heat treatment process, a certain temperature range is adopted to control the internal structure of the product, improve the strength and toughness of the product, and reduce the internal stress. For some products that require good anti-corrosion properties, galvanized and oil plated surface treatments can be adopted to protect the surface of the product from corrosion and rust.
In conclusion, post-treatment process is the key process for powder metallurgy products to obtain the desired performance. By adopting suitable cleaning, lubrication and surface treatment processes, the product can be ensured with good repeatability, low production cost and long service life.
