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Reduced iron powder is applied to oil bearing
Powder metallurgy oil-bearing is pressed to form in one time according to conventional powder metallurgy process, and the percentage of raw material weight is: reduced iron powder 97~98.5%;Graphite is 0.5 ~ 1.5%;Copper is 0.3 ~ 0.6%;In the production of powder metallurgy parts, in order to reduce the friction between powder particles and between powder particles and mold wall, a certain amount of lubricant graphite is added in the powder mixture.Zinc stearate also acts as a lubricant for pore making;After forming products for sintering, zinc stearate can't completely ablation, leaves some ash and residue of inorganic residue these stop completely and evenly between the iron-based particles sintering, generate new pore structure, reduce the performance of the sintering parts while sintering effect is not good, but with respect to release agent, the powder has good liquidity and easy to loose.
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