EP 0393137 B1 19960911 - CARBURIZED LOW SILICON STEEL ARTICLE AND PROCESS
Title (en)
CARBURIZED LOW SILICON STEEL ARTICLE AND PROCESS
Title (de)
ZEMENTIERTER STAHL MIT NIEDRIGEM SILIZIUMGEHALT UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
ARTICLE EN ACIER CEMENTE A FAIBLE TENEUR EN SILICIUM ET PROCEDE
Publication
Application
Priority
- US 8703450 W 19871221
- US 13577587 A 19871221
- US 8804470 W 19881214
Abstract (en)
[origin: WO8905865A1] A process for forming a carburized steel article includes carburizing a steel material containing not more that 0.10% silicon and less than 1.1% chromium to form an austenitic surface matrix having a high density of carbides dispersed therein. After quenching, the carburized steel article is characterized by an outer surface having a high ratio of carbides and is substantially free of intergranular oxides. As a result of preventing undesirable surface oxide formations and simultaneously providing a beneficial surface carbide structure, the bending fatigue strength, wear properties, and contact fatigue strength of articles such as gears, shafts, bearings and couplings are greatly enhanced.
IPC 1-7
IPC 8 full level
C23C 8/22 (2006.01); C21D 1/06 (2006.01); C21D 1/18 (2006.01); C21D 1/74 (2006.01); C21D 1/78 (2006.01); C21D 6/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01); C22C 38/24 (2006.01)
CPC (source: EP KR)
C21D 1/74 (2013.01 - KR); C21D 1/78 (2013.01 - EP); C23C 8/22 (2013.01 - EP)
Citation (examination)
- JP S61104065 A 19860522 - DAIDO STEEL CO LTD
- JP S5973860 A 19840426 - TOSHIBA KK
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 8905865 A1 19890629; AU 2913489 A 19890719; AU 631528 B2 19921203; CA 1300472 C 19920512; EP 0393137 A1 19901024; EP 0393137 A4 19910320; EP 0393137 B1 19960911; KR 900700630 A 19900816; KR 960005595 B1 19960426
DOCDB simple family (application)
US 8804470 W 19881214; AU 2913489 A 19881214; CA 586381 A 19881220; EP 89901165 A 19881214; KR 890701550 A 19890818