METHOD OF STEAM OXIDATION OF ARTICLES MADE FROM IRON- BASED ALLOYS IN FLUIDIZED BED Russian patent published in 2002 - IPC

Abstract RU 2190687 C2

FIELD: metallurgy; thermochemical treatment of iron-based alloys mainly produced through sintering of powder; mechanical engineering. SUBSTANCE: method includes heating articles in furnace in layer of inert material fluidized by steam. Article is preliminarily heated to 150-200 C in layer of inert material fluidized by air followed by heating to 400-570 C; fluidizing by steam is effected through continuous delivery of water directly to furnace gas distributor. EFFECT: avoidance of steam heater in technological line; facilitated process due to intermittent delivery of water to working space; reduced duration of process; enhanced corrosion resistance of powder articles. 2 cl, 1 ex

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RU 2 190 687 C2

Authors

Grachev S.V.

Kolpakov A.S.

Mal'Tseva L.A.

Bobok A.N.

Shavelkin A.D.

Kirjukhin P.M.

Dates

2002-10-10Published

2000-11-13Filed