EP 1101826 A1 20010523 - Quenching process after low pressure carburising
Title (en)
Quenching process after low pressure carburising
Title (de)
Abschreckverfahren nach Niederdruck-Aufkohlung
Title (fr)
Procédé de trempe après cémentation à basse pression
Publication
Application
Priority
- FR 9914449 A 19991117
- US 71552500 A 20001117
Abstract (en)
A method for quenching steel components after being subjected to a heat treatment process, such as cementation, at low pressure (Pcem), is characterised in that it consists of submitting the components to a flow of air at an elevated pressure (Ptrem), of between 5 and 50 bars. The duration of the hardening process is below 15 minutes and preferably less than 2 minutes. The heat treatment installation using this method for treating steel components is also claimed and incorporates a plurality of treatment cells and handling equipment for transferring the components between the different treatment cells.
Abstract (fr)
L'invention concerne un procédé de trempe de pièces d'acier ayant subi un traitement thermique à faible pression (Pcem) et une installation de traitement thermique, qui consiste à soumettre les pièces à un flux d'air à pression élevée (Ptrem). <IMAGE>
IPC 1-7
IPC 8 full level
C21D 1/613 (2006.01); C21D 9/00 (2006.01); C23C 8/22 (2006.01); C23C 8/80 (2006.01)
CPC (source: EP US)
C21D 1/613 (2013.01 - EP US); C21D 9/0062 (2013.01 - EP US); C23C 8/22 (2013.01 - EP US); C23C 8/80 (2013.01 - EP US)
Citation (search report)
- [AD] FR 2678287 A1 19921231 - ETUDES CONST MECANIQUES [FR]
- [AD] FR 2771754 A1 19990604 - ETUDES CONST MECANIQUES [FR]
- [A] DE 4208485 C1 19930211
- [A] DE 3736501 C1 19880609 - DEGUSSA
- [Y] ALTENA H: "NIEDERDRUCK-AUFKOHLUNG MIT HOCHDRUCK-GASABSCHRECKUNG VERFAHRENSTECHNIK UND ERGEBNISSE", HAERTEREI TECHNISCHE MITTEILUNGEN,DE,CARL HANSER VERLAG. MUNCHEN, vol. 53, no. 2, 1 March 1998 (1998-03-01), pages 93 - 101, XP000755093, ISSN: 0341-101X
- [Y] HOFFMANN R ET AL: "MOEGLICHKEITEN UND GRENZEN DER GASABKUEHLUNG", HAERTEREI TECHNISCHE MITTEILUNGEN,DE,CARL HANSER VERLAG. MUNCHEN, vol. 47, no. 2, 1 March 1992 (1992-03-01), pages 112 - 122, XP000267300, ISSN: 0341-101X
- [A] TINSCHER R ET AL: "FIXTURHAERTUNG VON WAELZLAGERRINGEN UNTER VERWENDUNG VON GASFOERMIGEN ABSCHRECKMEDIEN", HAERTEREI TECHNISCHE MITTEILUNGEN,DE,CARL HANSER VERLAG. MUNCHEN, vol. 53, no. 2, 1 March 1998 (1998-03-01), pages 108 - 115, XP000755095, ISSN: 0341-101X
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1101826 A1 20010523; FR 2801059 A1 20010518; FR 2801059 B1 20020125; US 6451137 B1 20020917
DOCDB simple family (application)
EP 00410142 A 20001116; FR 9914449 A 19991117; US 71552500 A 20001117