EP 2629903 A1 20130828 - ALUMINA FORMING BIMETALLIC TUBE FOR REFINERY PROCESS FURNACES AND METHOD OF MAKING AND USING
Title (en)
ALUMINA FORMING BIMETALLIC TUBE FOR REFINERY PROCESS FURNACES AND METHOD OF MAKING AND USING
Title (de)
AUS ALUMINIUM GEFORMTES BIMETALLISCHES ROHR FÜR RAFFINERIEVERFAHRENSÖFEN SOWIE VERFAHREN ZU IHRER HERSTELLUNG UND VERWENDUNG
Title (fr)
TUBE BIMÉTALLIQUE FORMÉ À PARTIR D'UN ALLIAGE ALUMINOFORMEUR POUR FOURS DE RAFFINERIE ET PROCÉDÉ DE FABRICATION ET D'UTILISATION ASSOCIÉ
Publication
Application
Priority
- US 40542710 P 20101021
- US 201113271856 A 20111012
- US 2011056528 W 20111017
Abstract (en)
[origin: WO2012054377A1] Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from carbon steels or low chromium steels comprising less than 15.0 wt.% Cr based on the total weight of the steel; ii) an inner tube layer being formed from- an alumina forming bulk alloy including 5.0 to 10.0 wt.% of Al, 20.0 wt.% to 25.0 wt.% Cr, less than 0.4 wt.% Si, and at least 35.0 wt.% Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer.
IPC 8 full level
B21D 39/00 (2006.01)
CPC (source: EP KR)
B23K 10/02 (2013.01 - KR); B23K 10/027 (2013.01 - EP); C10G 9/203 (2013.01 - EP); C10G 75/00 (2013.01 - EP); C22C 19/05 (2013.01 - KR); C22C 38/18 (2013.01 - KR); F16L 9/02 (2013.01 - EP); F16L 9/04 (2013.01 - KR); B23K 2103/20 (2018.07 - EP)
Citation (search report)
See references of WO 2012054377A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012054377 A1 20120426; BR 112013009481 A2 20160726; CA 2815357 A1 20120426; CN 103282137 A 20130904; EP 2629903 A1 20130828; JP 2014501620 A 20140123; KR 20130138805 A 20131219
DOCDB simple family (application)
US 2011056528 W 20111017; BR 112013009481 A 20111017; CA 2815357 A 20111017; CN 201180061501 A 20111017; EP 11834922 A 20111017; JP 2013534985 A 20111017; KR 20137012848 A 20111017