Powder metallurgy process, the basic process is:

 1, the raw material powder preparation. Milling the existing methods can be roughly divided into two categories: mechanical and physical-chemical methods. The mechanical method can be divided into: mechanical grinding and spray method; physical-chemical methods are divided into: electro-chemical etching method, reduction, of legitimate, restore - of legal, vapor deposition, liquid deposition and electrolysis. metal powder supplier Which is the most widely used reduction method, spray method and electrolytic method.

 2, forming the desired shape of the powder billet block. The purpose is obtained by forming a certain shape and size of the compacts, manganese powder and it has a certain density and strength. Forming method is basically divided into non-pressure compression molding and forming. Compression molding is the most widely used molding.

 3, blank pieces of sintering. Sintering is a key process in powder metallurgy. After forming compacts obtained by sintering to the requirements of the final physical and mechanical properties. Department of sintering sintering is divided into units and multi-line sintering. For the cell lines and multiple lines of solid-phase sintering, the sintering temperature than that used by the low melting point metals and alloys; for multiple lines of liquid phase sintering, boron powder the sintering temperature is generally higher than those in which the low melting point of refractory components, and fusible components higher than melting point. In addition to ordinary sintering, there are loose fitted sintering, melt dipping method, hot pressing method, and other special sintering process.

 4, the product of the order of processing. After sintering process, according to the requirements of different products, silicon powder take a variety of ways. Such as finishing, dipping oils, machining, heat treatment and plating. In recent years a number of new techniques such as rolling, forging sintered powder metallurgy materials are also used in the processing, nickel powder to obtain better results.

 Powder metallurgy materials and products in the future direction of development:

 1, a representative of the iron-based alloy, will be a large volume of sophisticated products, the development of high-quality structural parts.

 2, create a uniform microstructure, and processing difficulties, fully dense, high-performance alloys.

 3, with the enhanced densification process to produce the phase composition is generally mixed with a special alloy.

 4, making non-uniform materials, amorphous, microcrystalline or metastable alloys.

 5, processing of non-unique and the general form of composite parts or components. Source:www.mhcmp.com