AUSTENITIC STEEL TUBE FOR BOILER HAVING RESISTANCE TO CORROSION BY COAL ASH AND ITS MANUFACTURE

AUSTENITIC STEEL TUBE FOR BOILER HAVING RESISTANCE TO CORROSION BY COAL ASH AND ITS MANUFACTURE

PURPOSE:To obtain a steel tube for a boiler having superior resistance to corrosion by coal ash by subjecting an austenitic steel tube contg. specified amounts of Cr and Ni to soln. heat treatment, removing the surface layer of the tube and hardening the tube. CONSTITUTION:An austenitic steel tube f...

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Hauptverfasser: KANERO KAZUHIRO, HATTORI KEISUKE, SHIRAISHI TAKASHI, OKUBO YASUO
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator KANERO KAZUHIRO
HATTORI KEISUKE
SHIRAISHI TAKASHI
OKUBO YASUO
description PURPOSE:To obtain a steel tube for a boiler having superior resistance to corrosion by coal ash by subjecting an austenitic steel tube contg. specified amounts of Cr and Ni to soln. heat treatment, removing the surface layer of the tube and hardening the tube. CONSTITUTION:An austenitic steel tube for a boiler consisting of, by weight, 15-26% Cr, 10-35% Ni, one or more among
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CONSTITUTION:An austenitic steel tube for a boiler consisting of, by weight, 15-26% Cr, 10-35% Ni, one or more among <=0.15% C, <=2% Si, <=7% Mn, <=3% Mo, <=4.5% W, <=4% Cu, <=1% Ti, <=1% Nb, <=0.5% V, <=0.005% B, <=0.25% N and <=2% Al and the balance Fe with ordinary permitted impurities is manufactured. The tube is subjected to soln. heat treatment, the surface of the tube is removed by 2-15mum and the tube is hardened at 600 deg.C to form a hardened layer showing >=280 hardness Hv at 20mum depth from the surface and having >220 hardness Hv in the range from the surface to <=1mm depth.]]></description><language>eng</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>1988</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19880213&amp;DB=EPODOC&amp;CC=JP&amp;NR=S6333549A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19880213&amp;DB=EPODOC&amp;CC=JP&amp;NR=S6333549A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KANERO KAZUHIRO</creatorcontrib><creatorcontrib>HATTORI KEISUKE</creatorcontrib><creatorcontrib>SHIRAISHI TAKASHI</creatorcontrib><creatorcontrib>OKUBO YASUO</creatorcontrib><title>AUSTENITIC STEEL TUBE FOR BOILER HAVING RESISTANCE TO CORROSION BY COAL ASH AND ITS MANUFACTURE</title><description><![CDATA[PURPOSE:To obtain a steel tube for a boiler having superior resistance to corrosion by coal ash by subjecting an austenitic steel tube contg. specified amounts of Cr and Ni to soln. heat treatment, removing the surface layer of the tube and hardening the tube. CONSTITUTION:An austenitic steel tube for a boiler consisting of, by weight, 15-26% Cr, 10-35% Ni, one or more among <=0.15% C, <=2% Si, <=7% Mn, <=3% Mo, <=4.5% W, <=4% Cu, <=1% Ti, <=1% Nb, <=0.5% V, <=0.005% B, <=0.25% N and <=2% Al and the balance Fe with ordinary permitted impurities is manufactured. 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recordid cdi_epo_espacenet_JPS6333549A
source esp@cenet
subjects ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title AUSTENITIC STEEL TUBE FOR BOILER HAVING RESISTANCE TO CORROSION BY COAL ASH AND ITS MANUFACTURE
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