Review on the application of powder metallurgy materials

Powder metallurgy is a branch of metallurgy and material science, which is to make metal powder and metal powder (including a small amount of non metal powder) as raw material, and to make the material and products by sintering process. Powder metallurgy industry is one of the important parts in the mechanical industry. Powder metallurgy products according to different metal powder based and use, can be roughly divided into powder metallurgy mechanical parts, friction materials, magnetic materials, hard alloy materials, the wide application field of powder metallurgy mechanical parts, high demand and high technology content, is the leading products in the powder metallurgy industry.

With the development of modern powder metallurgy manufacturing technology, powder metallurgy products as alternative conventional metal casting, forging, machining and structure complex difficult to machining of mechanical parts, and its supporting applications continue to expand. From general machinery manufacturing to precision instruments, from hardware tools to large machinery, from the electronics industry to the motor manufacturing, from industrial and civil military industry, from the general technology to highly sophisticated technology, can see the figure of powder metallurgy technology. In the field of civil industry, powder metallurgy products has become a car, motorcycle, household appliances, electric tools, agricultural machinery, office equipment and other industries indispensable supporting basic parts.

Present situation and market demand of powder metallurgy technology at home and abroad

According to the China General Machinery Parts Association powder metallurgy branch report, 2006 China's powder metallurgy parts and products production increased by 17.5%, reaching about 88000t. Statistical product categories include iron copper based powder metallurgy parts, oil bearing and friction materials. In which the amount of powder metallurgy parts of the automobile market is about 32000t, accounting for 37%, an increase of 28%; power tool market growth of 29%.

The future will show a potential of China's automobile parts in powder metallurgy products market growth spurt. According to statistics, the amount of powder metallurgical products in developed countries accounted for the vast majority of the total production of powder metallurgy products, such as the United States accounted for 90%, 80% in Europe, while China is still less than 40%. European average per vehicle powder metallurgy products usage is 14kg, Japan is 16KG, the United States has reached more than 19.5kg.

The next few years is expected to reach 22kg, while China's current average per vehicle powder metallurgy products are only about 5kg. If calculated according to an annual output of 50 million cars, China's annual auto parts uses about 2.5 million tons of iron and steel powder, if the amount of our country every car powder metallurgy products to reach the European level, and keep car powder metallurgy parts replacement, so only the steel powder will need to nearly 10 million tons, is 1.25 times as much as that of the powder metallurgy total demand.