The Development Significance Of Primary Reduction Iron Powders In Heavy Industry And Its Automotive Industry
The development significance of Primary Reduction Iron Powders in heavy industry and its automotive industry
Primary Reduction Iron Powders from 2500 years ago, foreign advanced metallurgical industry development, due to the development history of powder metallurgy and national conditions in China, every year into the domestic most of the production of middle and low density parts, Primary Reduction Iron Powders in our country still occupy the main market of iron powder, powder metallurgy industry in China is still a long way to go.
As Primary Reduction Iron Powders, it has its own characteristics and USES. In the powder metallurgy industry, Primary Reduction Iron Powders particles and inner hole, irregular shape, specific surface area is big, more used in low, high density, high strength and thin wall, heterosexual parts of powder metallurgy products, etc., are lubricated bearing, clutch parts, CAM and other essential raw materials. Primary Reduction Iron Powders is the modern industrial applications and low price of the metal material, more can improve the technology of powder metallurgy parts, in the future a long period of time, Primary Reduction Iron Powders industry will be the whole society relies for survival and development of one of the important material base. The waste residue produced in some steel and powder metallurgy parts production contains a high grade of iron, which has been deposited into the open pit. It not only occupies a lot of land resources, but also causes environmental pollution.
Primary Reduction Iron Powders can improve the technology of powder metallurgy parts, add a dose of Primary Reduction Iron Powders can improve the wear resistance of mechanical products, with the diversification of mechanical production demand, Primary Reduction Iron Powders is used in the production of friction material, it greatly improve wear resistance of the friction material, for the development of heavy industry, automobile industry in China is of great significance.
The reducibility iron powder is an iron powder which is made from the reduction method. How the reduction process works:
Primary Reduction Iron Powders, because of the strong reducibility, oxidation reaction is easy to attack, even slightly heating in air will burn, because of its characteristics, it is often used for welded rails, chemical reduction, avoid oxidation transformation, etc. The resulting chemical equation is Fe3O4 + 4H2 = 3Fe + 4H2O, which is the reaction of the oxidation reduction of magnetite and hydrogen, generating water and reducing iron powder. Reduction method is to use solid or gaseous reductant (coke, charcoal, anthracite, water gas and conversion of natural gas, ammonia, hydrogen, etc.) of differentiation, reduced iron oxide (iron concentrate, rolled steel scale, etc.) for producing sponge iron.
The reduction process is divided into a reduction and a second reduction.
A reduction is solid carbon reduction for making sponge iron, a reduction of the primary processes are: (iron concentrate, rolled steel scale, etc.) - drying - magnetic separation - damage to sieve, canning to enter a reduction furnace, sponge iron;
The secondary refiner process: the sponge iron, the cleaning brush, the crushing, the magnetic separation, the secondary reduction furnace, the powder block, the dissolving, the magnetic separation, the grading, the mixing, the packaging, the finished product;
With the excellent iron powder produced by reducing hair, the parameters are qualified, Fe is greater than 98%, carbon is less than 0.01%, phosphorus and sulfur are less than 0.03%, and hydrogen loss is 0.1 ~ 0.2%.
What is the effect of the particle size composition on the compressive properties of Primary Reduction Iron Powders? I'll explain it to you:
Iron powder is an important raw material for the production of powder metallurgical iron based products, and its properties directly affect the quality of powder metallurgical products. The physical properties, Primary Reduction Iron Powders chemical properties and process properties of iron powder must be strictly controlled in order to get good performance. The production of powder metallurgy iron based products requires that the raw material iron powder has stable loose density, high compressibility and formability. The iron is an important raw material for the production of powder cold all-stags, Primary Reduction Iron Powders and its long energy directly influences the quality of the metal products of powder metallurgy. The physical properties, chemical properties and technological properties of iron powder must be strictly controlled in order to get good performance. The production of powder metallurgy iron based products requires that the raw material iron powder has stable loose density, high compressibility and formability.