China's iron-based powder metallurgy industry presents four major development trends

China's iron-based powder metallurgy industry presents the following four major development trends:

1) Improve the density of iron-based powder metallurgy and improve the replacement range of powder metallurgy parts for traditional forgings. At present, the density of mainstream-based powder metallurgy is 7.2-7.4g/cm3, and the most advanced technology of China's technology has increased its density to 7.6g/cm3. At this density, iron-based powder metallurgy has replaced automobiles, machinery, etc. Most connectors and some features. Considering the material saving in powder metallurgy itself and its own environmental protection characteristics, theoretically, the downstream space of such iron-based powder metallurgy parts can reach the level of 100 billion yuan;

2) Further improve the consistency of powder metallurgy, high precision, complex shape, etc., and upgrade the industrial structure of machinery, automobile, home appliances and other industries. Such directions are mainly oriented to reduce mechanical weight, save energy consumption, reduce emissions, and miniaturize equipment and civilian use. For example, the powder metallurgy parts of VVT developed by Dongsheng Co., Ltd. are more effective in reducing the exhaust emissions of automobiles while improving oil combustion;

3) Further alloying, the goal is lightweight and functional. In the iron-based powder, alloy powders such as aluminum, magnesium, and rare earth elements are mixed to achieve ultra-thin, lightweight, and the like, and can be widely used in fields closely related to life such as electronic equipment and wearable devices.

4) Improve the electromagnetic properties of powder metallurgy parts with the goal of replacing materials such as silicon steel and ferrite. Taking oriented silicon steel as an example, the conductive principle of silicon steel is to reduce the iron loss by reducing the grain boundary by adding elements such as silicon—especially oriented silicon steel, which is a single coarse grain in the guiding direction. Compared with the one-dimensional conductive direction of oriented silicon steel, the powder metallurgy piece can realize multi-dimensional conduction in any direction, that is, forming a single product is a single crystal grain. At present, such technologies have achieved breakthroughs in a few enterprises. If they fully meet industrial requirements, they will be widely used in transformers, motors, new energy vehicles and intelligent control systems including robots; these four types of directions basically represent iron-based powder parts. The direction of development.