Reduced iron powder has become irreplaceable high-grade mate

Reduced iron powder is the foundation of advanced powder metallurgy and soft magnetic induction device materials. The products because of the high machinability, can be made into all kinds of thin, special shape components, with a strong impact resistance, corrosion resistance, wear resistance and high strength characteristics, widely used in automobiles, machinery, ships, locomotives, etc. Is a high grade material cannot be replaced by the iron and steel made on pure melting.
In addition in the transformer core, electric induction device, high quality electrode, xerox, chemical industry, medical and food preservation is applied widely. With the development of science and technology, the application areas of high purity iron powder will be more and more widely, using amount is becoming bigger and bigger.
According to analysis, the initial raw material of reduced iron powder is iron oxide, mainly exists in the erroferric(Fe3O4) oxide. Due to the original hydrogen reduction effect is not very good, so change to tunnel kiln using carbon as reductant to restore the product, the reduction efficiency is relatively high. So using carbon as the reducing agent in once reduction in deoxidization, the method is widely used.
Thus, powder metallurgy with reduced iron powder production process is also a kind of once reduction, so generally choose carbon namely coke as a reducing agent for reduction, at the end get the semi-finished product sponge iron. Form replacement sponge copper iron powder, of course, this is not the final product, but also on the broken again after processing to the secondary reduction, can use hydrogen as a reducing agent for reduction at this moment, to get the product we want.

row material

Metamaterials (Metamaterial) is a kind of new material of the 21st century, it has special properties that natural
materials do not have, which mainly come from the artificial special structure. At present these materials mainly used in the field of electromagnetic and acoustics.
Recently, the British media said, Xi'an, China and the defense technology company has set up a metamaterial national defense research and development center. The company mainly engaged in the continuous wave radar, photoelectric, sonar detection system research, the production of "hunt shadow" short-range air defense information systems and other equipment appearanced at the Zhuhai airshow.
British media reported that China Xi'an and defense technology company is one of the fastest growing private companies in China, the company recently announced it will set up a metamaterial defencs research and development center The company announced on June 24, the new facility will focus on the application of metamaterials to research in the field of military and aerospace, the so-called metamaterials is a kind of artificial composite materials, has the structure not found in nature materials.

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Powder metallurgy parts are popular in car industry

Powder metallurgy is a very important part_forming technology. Powder metallurgy new technology, new 
craft appear constantly, this will promote the rapid development of high technology industry, and will also 
bring bright prospect material engineering and manufacturing technology. 

Because the powder metallurgy process has numerous advantages such as saving raw materials, light 
weight, excellent performance, low cost.  In addition to the engine, transmission and motor bearings, now 
the scope of using powder metallurgy parts in the car is becoming more and more widely. More parts to be 
used in the place such as chassis, body, interior, promising prospects.At present, the use of powder 
metallurgy parts in the car has more than 1000 kinds. The personage inside course of study points out, 
powder metallurgy structural parts in the replacement of the existing gear, CAM, sprocket, various shapes 
of castings, forgings, cutting and developing new structure parts has a unique advantage.

In order to achieve the human and the nature harmonious coexistence, the existing way of life must be 
changed, save energy and reduce CO2 emissions, protect the ecological, to meet the advent of the era of low 
carbon, are increasingly using of new energy vehicles. Developing powder metallurgy new technology 
research, to meet the arrival of the era of low carbon, new energy use has very important significance, 
powder metallurgy parts is developing toward the target of energy conservation and emissions reduction. 

Titanium powder forming technology

New titanium powder forming technology on the basis of powder metallurgy compaction process, combined with the advantages of metal injection molding, by adding suitable amount of micro powder and improve lubricant or binder content, improve the liquidity, filling and forming ability of mixed powder, which can be used to make complex geometry parts , has a very broad prospects for development.

Titanium powder forming technology is a kind of forming technology directly produce parts by the powder, produces almost final shape of parts is high yield and low cost method. This method basically does not require further processing or finishing, is good to control the size, and the stability of the parts is wonderful, the uniformity and mechanical performance can be fully guaranteed. Ti and Ti alloy parts produced by powder metallurgy have no composition segregation, with uniform organization and stable performance. Titanium car parts is a very attractive market, research and development production method of new materials with low cost, and combined advanced powder metallurgy near net shaping technology, is expected to make Ti turn into automobile manufacturing.

At present, the main impediment to Ti and Ti alloy widely application is its high cost, using powder metallurgy technology can effectively reduce the cost. To further reduce the production cost of Ti and Ti alloys, new Ti powder forming technology is constantly emerging.

basic raw material for powder metallurgy industry

Iron powder is a basic raw material for powder metallurgy industry. 85% of iron powder is used in the manufacture of powder metallurgy parts, with 70% ~ 80% of the powder metallurgy parts are used in automobile industry. The rest of the iron powder used in chemical industry, magnetic material, cutting, welding rod, heating material etc.

Development scale and level of iron and steel industry is a sign of a nation and region economy development, it has an important position in economy construction. Demand for steel and iron grows rapidly, the imports rely of ore resources of foreign is getting higher and higher, has reached more than 30%. In fact our country is a steel country but not a great power. steel with good quality and special steel material still need to rely on a large number of imports. So accelerate the development of high quality steel materials of our country is a realistic problem in front of us. Once reduced iron powder is a kind of more advanced metallurgical materials. Its products of powder metallurgy parts are widely used in automotive, mechanical and electrical, home appliances, communications, machinery manufacturing and other components, and many other areas, the economic benefit is very considerable.

 At present, the industry of our country is developing rapidly, as the adjustment and upgrading of industrial structure, the domestic demand of powder metallurgy products in 20%~30% growth rate, which is the force driving the rapid development of iron powder production in China in recent years. However, at present in our country, powder metallurgy parts has pretty large gap compared with the developed countries. Gap is the driving force for the development of the industry, at the same time also indicates the powder metallurgy has wide development prospects.

Powder metallurgy technology can effectively solve the difficulty in processing and forming of TiAl alloy

In recent years, in order to promote the high temperature high performance high titanium niobium alloy engineering technology and industrialization process, our country developed with independent intellectual property rights of a new generation of aerospace engine materials used high temperature high performance high titanium niobium alloy material, will soon enter the stage of industrialization. This technology will make our country aerospace engine materials the world leading level. High titanium niobium alloy is a research direction of innovation in our country, has the world's first high temperature alloy patent, led the world in the field of research and development, is a milestone in the development of titanium aluminum alloy, marked the titanium aluminum intermetallic compound research field in China as the international leading position. 
Our country has put a titanium alloy research included in the national 863 high technology and new material development.

After years of efforts, in the alloy microstructure, deformation characteristics and the effect of adding elements and alloy preparation technology and so on has carried on the fruitful work. There have been many studies of titanium aluminum alloy papers published in journals and conferences both at home and abroad.

learn more read http://www.mdmmetal.com/Companynews/Powder_metallurgy_technology_can_effectively_solve_the_diffi_190.html 

The multi-direction development of MIM’s material system

Injection molding technology is a near net shaping technology that is able to shape as requested ideally, economically, and only needs few or no post processing after sintering. This has become more and more important in the application of industrialized production of fine ceramic. In the fine ceramic industry, mainly use carbide, metal ceramic, inorganic non_metallic ceramics, oxide ceramic, intermetallic compounds, etc.

Take zirconia ceramic fiber pin for example, the post processing time could be greatly shorten if the green ware(blank) made by MIM technology. Due to the blank formed int he cavity has holes with a certainaccuracy, the subsequent grinding process is reduced to 1/3 to 1/4 of extrusion forming, so as to increase the production efficiency and reduce production cost. 

Wearproof tool material in developing are Co base alloy, W base alloy, hard alloy, Al2O3_30 tic composite cutting tool ceramics, MULLITE (MULLITE), SiC, Si3N4, etc. Metal injection molding is also applied to other materials, such as SiC/Al composite materials, tool steel, titanium alloy, non_magnetic cemented carbide, W/Cu alloy, rare earth permanent magnet materials, KOVAR alloy, etc.

Magnetic materials such as soft magnetic ferrite , bonded permanent magnetic (such as NdFeB, SmCo, etc) is another vast field of applying technology.

MIM Industry Development

 At present, there are over 500 enterprises with considerable scale on the planet, that produce near net shape parts with metal injection molding technology, many of them are the subsidiaries of the international well known large companies. Such as the German BASF company, which main business is to produce the feedstock that can use in injection machine directly. American GM company set up an injection molding factory to produce precision parts for there cars. Japan's sumitomo metal, Shin Etsu Chemical have been establishing in the production of bonded magnets of injection molding. While some of the fine ceramic enterprises with strong foundation have also reaped the benefits of injection molding, so more ceramic manufacturers will adopt injection molding technology to produce complex shape precision ceramic parts.               

         Predictably, as the further research, development and application of metal injection molding. MIM technology will become a near net shaping technology in the near future, that can be parallel to machining, precision casting and pressing/sintering. MIM will be known and accepted by more and more designer, and meets the request of high performance for key special shaped precision parts in the industries  such  as  communication,  machinery,  automobile,  weapons,  medical,  aerospace, etc. 

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Metal injection moulding technology has brought a big revolution to mobile phone industry

The application of powder injection molding is more and more widely, mobile phone, it came into use of powder 
injection molding technology. Due to market need lighter, thinner and more aesthetic phone, need to use the best 
technology, to reduce the size of the mobile phone. Some mobile enterprise is seeking to make mobile phone assembly parts with metal injection molding.
The MIM application trend in the mobile phone industry
The president of a mobile phone brand said at a luncheon: "our first metal mobile phone is made of aluminum, we found that in order to meet the all the requirements, metal injection molding method is the best, in many cases it is the only choice". But the company did not use the metal injection molding parts as first material, because the mobile phone market life is pretty short and styles change quickly. While metal injection molding method has long production cycle and high production cost. 
Mobile phone parts made with MIM tech. 
Now there are several parts in mobile phone is made by MIM method. For example: the oscillator made with tungsten, use to balance weight, the hinge made with high strength steel, in the mobile phone the most important application of MIM is producing ramp, barrel and hinge. The company President said: "the advantages of MIM and its improvement will increase its application in the mobile phone manufacturing, mobile phone manufacturing industry lack of understanding of metal injection molding method has affected the application”.
Now, metal injection molding method is used to make some mobile phones with complicated structure and function, such as clamshell mobile phones. The company's president said: "from the manufacturing time and cost considerations, manufacturing common mobile phones should not use metal injection molding parts".