EP 0108175 B1 19880113 - PROCESS FOR PRODUCING ALLOY STEEL POWDER
Title (en)
PROCESS FOR PRODUCING ALLOY STEEL POWDER
Publication
Application
Priority
EP 82305820 A 19821102
Abstract (en)
[origin: EP0108175A1] A process for producing alloy steel powder, particularly, low-oxygen, low-carbon alloy steel powder is disclosed. The process comprises: preparing molten steel which contains at least one easily oxidizable element selected from the group consisting of chromium, manganese, vanadium, niobium, boron and silicon; atomizing said molten steel by means of an atomizing agent containing a non-oxidizing medium to provide as-atomized alloy steel powder containing 0.2% by weight or less of oxygen and 0.1% by weight or more of carbon; decarburizing the resulting powder by maintaining it in an atmosphere containing at least H2 and H2O gases under specified conditions; and cooling the thus decarburized alloy steel powder to room temperature in an inert or reducing atmosphere.
IPC 1-7
IPC 8 full level
B22F 1/145 (2022.01); B22F 9/08 (2006.01)
CPC (source: EP US)
B22F 1/145 (2022.01 - EP US); B22F 9/082 (2013.01 - EP US); B22F 2999/00 (2013.01 - EP)
Citation (examination)
GB 1236271 A 19710623 - SMITH CORP A O [US]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0108175 A1 19840516; EP 0108175 B1 19880113; DE 3277966 D1 19880218
DOCDB simple family (application)
EP 82305820 A 19821102; DE 3277966 T 19821102