METHOD OF PRODUCING IRON BASE POWDER (VARIANTS) Russian patent published in 2008 - IPC B22F9/08 B22F9/04 B22F1/00 

FIELD: metallurgy.

SUBSTANCE: method includes obtaining an iron-nickel melt with nickel contents not more than 4 mas.%, dispersing it with a compressed air, recovery annealing of received raw powder, crushing, incorporating of additives into received powder by means of mechanical mixing; at that additives contain copper and molybdenum in form of copper and molybdenum oxides or ammonium poly molybdate; then the method includes heat treatment and crushing. Then a powdered alloy is added to the received alloy powder by means of mechanical mixing; at that the powdered alloy presents an iron silicon alloy with dimension of particles not more than 45 micrometers and with silicon contents either 18-21 mas.% or 51-56 mas.%. According to the second variant copper in form of its oxides is introduced into powder simultaneously with cobalt and molybdenum. As per the third variant of the method cobalt is introduced into an initial melt; at that nickel contents in the melt is not more than 2 mas.%, while cobalt contents is not more than 7 mas.%.

EFFECT: powder possesses high compactibility and pressure strength and facilitates production of wear and heat resistant items with high operational characteristics.

9 cl, 12 ex, 3 tbl