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How to choose powder metallurgy products
2019-12-21
In recent years, with the rapid development of the market economy, powder injection molding technology has been widely used, making our powder metallurgy products a great success, and more and more fields have begun to use powder metallurgy products to help production. At the same time, more and more users also recognize powder metallurgy products more, but how to choose and buy the complicated powder metallurgy products in the market is a problem that everyone should pay attention to.
Heat treatment process of powder metallurgy
2021-11-17
Powder metallurgy materials are used more and more widely in modern industry. In the application of high-density and high-precision complex parts replacing forgings, rapid development has also been achieved with the continuous progress of powder metallurgy technology. However, due to the difference of subsequent treatment process, there are still some defects in its physical and mechanical properties. This paper briefly expounds and analyzes the heat treatment process of powder metallurgy materials, analyzes its influencing factors, and proposes strategies to improve the process.
Why powder injection molding has become one of the most sought-after processes today
Why is powder injection molding one of the most sought-after processes today? An important development direction of powder injection molding is closely related to microsystem technology. It is closely related to the microsystem technology. In the areas related to micro-systems, such as electronic information, micro-chemistry, medical equipment, etc., equipment continues to be miniaturized and its functions are becoming more complex. The powder injection molding technology provides the possibility of completion.
What are the common problems in the use of powder metallurgy bearings?
Powder metallurgy bearing is made by pressing, sintering, shaping and oil-immersing metal powder and other anti-friction materials. It has a porous structure. After being soaked in hot oil, the pores are filled with lubricating oil. The journal rotates during operation. The suction effect and friction heating of the metal and oil heat the metal and the oil to squeeze the oil out of the pores, and then the friction surface acts as a lubrication. After the bearing is cooled, the oil is sucked back into the pores. So what are the common problems in the use of powder metallurgy bearings?
How much do you know about powder metallurgy parts in oil pumps?
How much do you know about powder metallurgy parts in oil pumps? Currently, engine oil pumps and automatic transmission oil pumps mostly use quantitative oil pumps. Quantitative oil pumps are generally external gear pumps, internal gear pumps, or internal gear pumps. Various structures are made of powder metallurgy.
Features of powder metallurgy
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?
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