Several Kinds of Materials for Powder Metallurgy Brake Piece

Powder metallurgy brake piece has two kinds: iron base and copper base. Iron base powder metallurgical brake piece has excellent tribological propertie and high mechanical strength under high temperature and high load, can be used within 400-1000 ℃, but attrition is quite large at low speed. Thermal stability of the iron base is higher than copper base. The disadvantage is that has the affinity with dual (such as cast iron or steel), easy to produce adhesive agglutination, volatile friction coefficient, easy to happen abnormal wear and tear, produce noise, etc.

Original article link：

http://www.zcmim.com/article/powder-metallurgy-brake-block-skomf_1.html

Powder Metallurgy Brake Block

Powder metallurgy brake block has both the friction coefficient suffer no effect on weather as casting iron brake block does, but also has the friction coefficient do not change with the train speed same as organic synthetic brake block does. And the wear resistance and thermal conductivity are all well. The high-speed train, high-power locomotives and French TGV high speed trains are all used this kind of brake block in Sweden, Canada and other countries. And they have achieved certain braking effect. But powder metallurgy brake block has great  abrasion on wheel. Its cost is higher than cast iron brake block and organic synthesis, thus make it difficult to use a lot.

Original article link：http://www.zcmim.com/article/powder-metallurgy-brake-block_1.html

Metal Compounds Transformed into Powder Methods

transforming solid metal and alloy or metal compounds into powder methods include:
(1) mechanical smash and electrochemical corrosion method make metal and alloy powder from solid metal and alloy
(2) Reductive – legally method. Preparing metal compounds from solid metal oxides and reduction between salts discretion metal and alloy powder from metal and metal powder, metal oxides and nonmetal powder.

Original article link：http://www.zcmim.com/article/metal-compounds-transf_1.html

Metal Compounds Transformed into Powder Methods

transforming solid metal and alloy or metal compounds into powder methods include:
(1) mechanical smash and electrochemical corrosion method make metal and alloy powder from solid metal and alloy
(2) Reductive – legally method. Preparing metal compounds from solid metal oxides and reduction between salts discretion metal and alloy powder from metal and metal powder, metal oxides and nonmetal powder.

Original article link：http://www.zcmim.com/article/metal-compounds-transf_1.html

The Special Structure of MIM Metal Injection Molding

MIM metal injection molding can produce special structure and properties products that ordinary smelting method cannot produce, such as new porous biological material, porous membrane material, high performance ceramics abrasive tool and functional ceramics material, etc. MIM metal injection molding can realize near net shape forming and automatic batch production, thus, can effectively reduce resources and energy consumption. MIM metal injection molding can make full use of ore, tailings, steelmaking sludge, rolled steel and recycling scrap metal as raw materials. It is a new technology can realize material regeneration and comprehensive effectively.

Original article link：

http://www.zcmim.com/article/mim-metal-injection-molding-tspmmi_1.html

The Special Structure of MIM Metal Injection Molding

MIM metal injection molding can produce special structure and properties products that ordinary smelting method cannot produce, such as new porous biological material, porous membrane material, high performance ceramics abrasive tool and functional ceramics material, etc. MIM metal injection molding can realize near net shape forming and automatic batch production, thus, can effectively reduce resources and energy consumption. MIM metal injection molding can make full use of ore, tailings, steelmaking sludge, rolled steel and recycling scrap metal as raw materials. It is a new technology can realize material regeneration and comprehensive effectively.

Original article link：

http://www.zcmim.com/article/mim-metal-injection-molding-tspmmi_1.html

Toughness and Hardness of Metal injection molding process

Metal injection molding process will encounter a variety of materials and toughness problems. Some is not easy to adjust, some can be modified in some way, such as dipping, hot pressing or liquid phase sintering, whose effect is very good. But if you are using superfine powder and combine hot isostatic pressing process, the hole on MIM parts’ surface can get basic fusion, material density is close to theoretical limits, its toughness is obviously improved. Besides toughness, everyone is concerned about the hardness of products. In fact, harness has less relationship with metal injection molding process, mainly depends on the chosen material.

Original article link：

http://www.zcmim.com/article/metal-injection-molding-process-tahpmim_1.html