EP 1639143 A2 20060329 - PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METALS
Title (en)
PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METALS
Title (de)
VERFAHREN ZUR VERBESSERUNG DER KORROSIONSBESTÄNDIGKEIT VON METALLEN
Title (fr)
PROCEDE PERMETTANT D'AMELIORER LA RESISTANCE A LA CORROSION DES METAUX
Publication
Application
Priority
- GB 2004002232 W 20040524
- US 47318903 P 20030527
Abstract (en)
[origin: WO2004106559A2] A process for improving the corrosion resistance of metals, particularly steels and high nickel content alloys, is provided. The process comprises subjecting metal parts to one or more cryogenic treatment, optionally followed by one or more heat treatments. Cryogenic treatment preferably employs temperatures of between -90°C to -195°C, most preferably -180°C to -195°C. Heat treatment preferably employs temperatures of between l20°C to 175°C. The process may be employed in the treatment of metal parts and components. Heat exchanger tubes, cooler tubes, piping, especially chemical process piping, pumps, reactor vessels and storage tanks produced by a process are provided.
IPC 1-7
IPC 8 full level
C21D 6/04 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01); C21D 6/00 (2006.01)
CPC (source: EP)
C21D 6/04 (2013.01); C22F 1/00 (2013.01); C22F 1/10 (2013.01); C21D 6/001 (2013.01)
Citation (search report)
See references of WO 2004106559A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004106559 A2 20041209; WO 2004106559 A3 20050324; CN 1795278 A 20060628; EP 1639143 A2 20060329; JP 2007503528 A 20070222
DOCDB simple family (application)
GB 2004002232 W 20040524; CN 200480014766 A 20040524; EP 04734559 A 20040524; JP 2006530534 A 20040524