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Features of powder metallurgy
2021-11-17
Powder metallurgy has unique chemical composition and mechanical and physical properties, and these properties cannot be obtained by traditional melting and casting methods. The use of powder metallurgy technology can directly produce porous, semi-dense or fully dense materials and products, such as oil-bearing bearings, gears, cams, guide rods, cutting tools, etc., which is a rare cutting process.
Powder production method
(1) Production of powder. The powder production process includes steps such as powder preparation and powder mixing. In order to improve the moldability and plasticity of the powder, plasticizers such as engine oil, rubber or paraffin are usually added.
Basic process of powder metallurgy process
1. Preparation of raw material powder. The existing milling methods can be roughly divided into two categories: mechanical methods and physical chemical methods. The mechanical method can be divided into: mechanical crushing and atomization method; physical chemical method is further divided into: electrochemical corrosion method, reduction method, chemical method, reduction-chemical method, vapor deposition method, liquid deposition method and electrolysis method. Among them, the most widely used are reduction method, atomization method and electrolysis method.
Related application fields of powder metallurgy
Powder metallurgy-related companies are mainly suitable for the production and research of parts and accessories in the automotive industry, equipment manufacturing, metal industry, aerospace, military industry, instrumentation, hardware tools, electronic appliances and other fields, production of related raw materials, auxiliary materials, and various powders Manufacturing equipment and sintering equipment. Products include bearings, gears, carbide tools, molds, friction products and so on. In military industrial enterprises, heavy weapons and equipment such as armor-piercing bombs, torpedoes, etc., and brake pairs such as aircraft and tanks need to be produced by powder metallurgy technology. Powder metallurgy auto parts have become the largest market in China's powder metallurgy industry in recent years, and about 50% of auto parts are powder metallurgy parts.
How much do you know about powder metallurgy?
2019-12-21
1. What is powder metallurgy? Powder metallurgy is a technology that manufactures metal powder and uses metal powder (sometimes with a small amount of non-metal powder) as raw materials, through mixing, forming and sintering, to manufacture materials or products. It includes two parts
Comparison of powder metallurgy MIM injection molding and stamping/CNC/die-casting
The emergence of powder metallurgy technology solves the problems that cannot be solved by traditional molding processing technology. Compared with new materials and special materials, it can carry out effective and high-efficiency molding manufacturing, and provide precision molding technical support for industrial development. MIM injection molding is the preferred molding technology for precision parts and complex parts in the powder metallurgy process. Compared with stamping, fine blanking, screw machining, CNC machining, EDM, die-casting, investment casting, powder metallurgy compression molding and other technologies, it has more advantages. Next, Minxin Powder will introduce the comparison of each technology with MIM injection molding technology to see which technology is better.