Process for Powder metallurgy

Materials and process for powder metallurgy: the formula includes graphite, copper, zinc stearate and iron uniformly mixed iron-based powder; wherein the iron-based powder is also added phosphorus ferroalloys and sulfuric acid manganese; the iron-based powder measured by weight of units, graphite powder is 0.4 to 1.5%, copper powder of 1 to 3%, manganese from 1 to 2.5%, phosphorus alloy 1 % to 2.5%, zinc stearate 0.5 to 1%, iron 70% -98%.

The process include:

(1) mixing

(2) pressing;

(3) sintering;

(4) oil immersion;

(5) fihishing;

(6) rough finish;

(7) Finish machining;

(8) anti-rust treatment.

Meanwhile, the generation of new technology has advantages like increasing product performance and strength, reducing production costs, improving production efficiency, high resistance to wear, shortening sintering time, stable quality.