METHOD FOR SINTERED HARD ALLOYS PRODUCTION Russian patent published in 1995 - IPC

Abstract SU 1748452 A1

FIELD: powder metallurgy. SUBSTANCE: desired alloy are prepared by using composite powders which contain boride of one or two metals of IV-VI groups of Periodic Table and metal of ferrous group. Origin materials are ground to dispersity 10-200 μm. Metal of ferrous group, or its alloy or boron compound are added into thus prepared composite powder, its quantity being 1-20 mass %. Thus obtained mixture is thoroughly mixed and pressed into briquettes having relative density 0.6-0.7. Then sintering in vacuum furnace within 10-60 min at 1100-1500 C takes place. EFFECT: decreases cost of the process, improves physical, mechanical and operation properties of alloys. 3 cl, 1 tbl

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SU 1 748 452 A1

Authors

Raskolenko L.G.

Lepakova O.K.

Maksimov Ju.M.

Ziatdinov M.Kh.

Pak A.T.

Dates

1995-03-27Published

1988-07-15Filed