ZHONGWEI precisely shares the process flow of powder metallurgy

ZHONGWEI precisely shares the process flow of powder metallurgy

Powder metallurgy is a new net near molding technology. It can be used to melt, heat, inject and press metal powder for mold molding. For some difficult to process, refractory metal, high alloy and other special materials. With the continuous development of industrial technology, powder metallurgy is developing rapidly in today's market. The traditional casting process has been unable to meet the needs of modern industry. Therefore, the parts and components used in many fields need to be manufactured by high-tech means. The powder metallurgy process is such a high-tech process.

ABCDweiPrecisely share the process flow of powder metallurgy:

1. Preparation of raw material powder

The existing pulverizing methods can be broadly divided into two categories: mechanical method and physical chemical method. The mechanical method can be divided into: mechanical pulverization and atomization; Physicochemical method can be divided into electrochemical corrosion method, reduction method, chemical method, reduction chemical method, vapor deposition method, liquid deposition method and electrolysis method. Among them, reduction method, atomization method and electrolysis method are most widely used.

2. The powder is formed into a billet of the desired shape

The purpose of forming is to make a certain shape and size of the compact, and make it have a certain density and strength. The forming methods are basically divided into pressure forming and non pressure forming. Compression molding is the most widely used in pressure molding. In addition, 3D printing technology can be used to make the embryo block.

powder metallurgy

3. Sintering of billets

Sintering is a key process in powder metallurgy. The formed compacts can obtain the required final physical and mechanical properties through sintering. Sintering can be divided into unit system sintering and multi-element system sintering. For the solid state sintering of single system and multicomponent system, the sintering temperature is lower than the melting point of the metals and alloys used; For the liquid phase sintering of multicomponent systems, the sintering temperature is generally lower than the melting point of the refractory components, but higher than the melting point of the fusible components. In addition to ordinary sintering, there are also special sintering processes such as loose sintering, melt leaching, hot pressing, etc.

4. Post processing of products

The treatment after sintering can adopt various methods according to different product requirements. Such as finishing, oil immersion, machining, heat treatment and electroplating. In addition, in recent years, some new processes, such as rolling and forging, have also been applied to the processing of sintered P/M materials and achieved satisfactory results.

The above is an introduction to the process flow of powder metallurgy of Zhongwei Precision. All kinds of products produced by the powder metallurgy process not only have professional performance, but also have high production efficiency, bringing more benefits to the enterprise. At the same time, energy conservation and emission reduction also contribute to environmental protection.