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Reduced iron powder has become irreplaceable high-grade mate

Writer： admin Source： MDM Date：2016-04-19

Reduced iron powder has become irreplaceable high-grade materials in manufacturing industry

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.
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