EP 0838534 B1 20010718 - Process for obtaining an improved resulfurized fine-austenitic-grain steel
Title (en)
Process for obtaining an improved resulfurized fine-austenitic-grain steel
Title (de)
Verfahren zur Herstellung von aufgeschwefeltem Stahl mit feiner austenitischer Körnung
Title (fr)
Procédé pour la fabrication d'un acier resulfuré à grain fin austénitique
Publication
Application
Priority
IT MI962219 A 19961025
Abstract (en)
[origin: EP0838534A1] Disclosed is a particular type of fine-austenitic-grain globular-sulfides resulfurized carbon and/or alloy steel suitable for casehardening and hardening-tempering treatments, with the addition of transition metals of Group III (rare earth metals or lanthanides), in form of non-coated wire or wire coated with metals, metal alloys or still other coatings, such as ceramic coating or other types of coatings. The addition of rare earths as metal wire to ingot mould or tundish allows rare earth elements to be perfectly diffused and homogenized throughout the product and globular sulfides to be homogeneously distributed as well throughout the cast section; the resulting steel displays better machinability properties than steel produced by means of traditional techniques.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C22C 38/002 (2013.01); C22C 38/60 (2013.01)
Citation (examination)
R.KIESSLING, N.LANGE: "Non-metallic inclusions in steel", 1997, THE INSTITUTE OF MATERIALS, LONDON
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0838534 A1 19980429; EP 0838534 B1 20010718; AT E203282 T1 20010815; DE 69705691 D1 20010823; DE 69705691 T2 20020704; DK 0838534 T3 20011105; ES 2160891 T3 20011116; GR 3036834 T3 20020131; IT 1286045 B1 19980707; IT MI962219 A1 19980425; PT 838534 E 20011228; SI 0838534 T1 20011231
DOCDB simple family (application)
EP 97203234 A 19971016; AT 97203234 T 19971016; DE 69705691 T 19971016; DK 97203234 T 19971016; ES 97203234 T 19971016; GR 20010401695 T 20011008; IT MI962219 A 19961025; PT 97203234 T 19971016; SI 9730207 T 19971016