Hastelloy B3 Seamless Yeeb Nkab

Hastelloy B3 Seamless Yeeb Nkabyog cov neeg ua haujlwm niaj hnub ntawm cov nickel{0}}molybdenum alloy tsev neeg, muab seamless nyob rau hauv ASTM B622 tiv thaiv UNS N10675. Nws tau tsim los ua tus thawj coj ncaj qha rau Hastelloy B2 (UNS N10665) los daws ib qho teeb meem tshwj xeeb ntawm metallurgical: B2 poob nws qhov ductility thiab corrosion resistance thaum tuav hauv 650-}850℃ntau yam thaum vuam lossis kev pabcuam, vim tias cov hlau ua rau lub zog Ni-Mo theem ntawm cov ciam teb.

 

B3 ntxiv cov tswj chromium, hlau, thiab tungsten rau tib Ni-Mo puag, thiab qhov kev hloov pauv me me ua rau cov nag lossis daus. Qhov tshwm sim yog cov yeeb nkab uas tuaj yeem welded thiab siv rau hauv thaj chaw nrog kev qhuab qhia hauv khw zoo tib yam, thaum ua kom muaj kev tiv thaiv zoo rau hydrochloric acid thiab lwm yam kev txo qis uas ua rau B-tsev neeg nto moo.

Tshuaj muaj pes tsawg leeg ntawm Hastelloy B3 yeeb nkab rau ASTM B622

Cov cua sov- tsom xam cov kev txwv hauv qab no yog coj los ntawm ASTM B622 rau UNS N10675. Nickel yog qhov sib npaug ntawm 65.0% yam tsawg kawg nkaus, thiab molybdenum ntau ntawm 27.0-32.0% yog qhov muab cov alloy nws txo cov kua qaub.

 

Lub ntsiab	Kev txwv kev txwv,%
Ni	65.0 min (sib npaug)
Mo	27.0 - 32.0
Fe	1.0 - 3.0
Cr	1.0 - 3.0
Co	3.0 max
W	3.0 max
Mn	3.0 max
Cu	0.20 max
V	0.20 max
Ta	0.20 max
Al	0.50 max
Ti	0.20 max
Si	0.10 max
C	0.01 max
P	0.030 max
S	0.010 max

 

Piv nrog B2, B3 chemistry ntxiv peb qhov kev txiav txim siab: chromium ntawm 1.0-3.0%, hlau ntawm 1.0-3.0%, thiab tungsten txog 3.0%. Tsis muaj ib qho ntawm cov no loj txaus los hloov cov alloy lub cim corrosion, tab sis ua ke lawv stabilize lub microstructure.

 

Hauv B2, raug rau 650-850℃ntau yam precipitates Ni7Mo6 intermetallic ntawm cov ciam teb, uas ua rau ob qho tib si ductility thiab corrosion kuj nyob rau hauv tshav kub- cuam tshuam cheeb tsam ntawm ib tug weld. Nyob rau hauv B3 tib lub thermal keeb kwm tsim ib qho ruaj khov ib qho - theem qauv, uas yog vim li cas B3 yeeb nkab tuaj yeem welded, kub- tsim, thiab muab tso rau hauv kev pabcuam nrog cov cua sov- thaj tsam cuam tshuam sab laug hauv qhov zoo li-welded hauv feem ntau daim ntawv thov.

 

Mechanical zog ntawm B3 yeeb nkab nyob rau hauv lub annealed mob

ASTM B622 qhia meej cov yam ntxwv yam tsawg kawg nkaus hauv qab no rau UNS N10675 seamless yeeb nkab hauv kev daws teeb meem -annealed mob, tus me nyuam mob rau tag nrho B3 piping xaj:

 

Khoom	Yam tsawg kawg nkaus tus nqi (ASTM B622)
Tensile zog	690 MPa (100 ksi)
Yield zog, 0.2% offset	310 MPa (45 ksi)
Elongation hauv 2 hauv (50.8mm)	40%

 

Cov txiaj ntsig tau lees paub no yog qhov tshwm sim ntawm daim ntawv pov thawj zeb xeem, thiab lawv zoo ib yam li B622 cov kev cai rau lwm cov annealed Ni-Cr-Mo alloys, uas ua rau phab ntsa-thickness xam raws li nyob rau hauv cov khoom tsev neeg.

 

Cov nqi tsim khoom tiag tiag yog siab dua: cov yeeb nkab annealed B3 raug siv txog 755-790 MPa tensile nrog cov txiaj ntsig ze 350 MPa, thiab elongation nyob ib ncig ntawm 50-60% hauv qhov me me. Lub alloy yog tag nrho cov qauv rau lub siab piping thiab hlab ntsha, thiab nws yog nquag teev rau lined los yog unlined hydrochloric acid piping qhov twg tus tsim lub siab es tsis yog lub corrosion nyiaj tso cai teem rau phab ntsa.

 

Lub cev muaj zog

Qhov ceev ntawm Hastelloy B3 yog 9.22 g / cm³ (0.333 lb / in³), pom tau tias siab dua cov chromium -cov kabmob alloys vim muaj cov ntsiab lus molybdenum siab. Lub theoretical qhov hnyav ntawm B3 yeeb nkab yog xam nrog tus qauv nickel-alloy mis: qhov hnyav hauv kilograms ib 'meter' sib npaug 0.02466 npaug (sab nraud txoj kab uas hla rho tawm phab ntsa thickness) lub sij hawm phab ntsa thickness, nrog qhov ntev hauv millimeters.

 

A 60.3 mm (NPS 2) B3 yeeb nkab nrog 5.54 mm SCH 40S phab ntsa yog li suav txog kwv yees li 7.48 kg / m, thiab daim duab theoretical no yog lub hauv paus ntawm kev hais lus thiab kev xam khoom thauj tshwj tsis yog qhov kev txiav txim qhia qhov tseeb qhov hnyav.

 

Khoom	Tus nqi
Qhov ntom	9.22 g / cm³
Melting ntau	1330 - 1390℃(kwv yees.)
Modulus ntawm elasticity (chav temp)	216 GPa (kwv yees)
Hluav taws xob resistivity (chav temp)	1.37 μΩ (kwv yees)
Thermal conductivity, 100 degree	11.3 W/m·K (kwv yees)

 

Cov qauv tsim khoom thiab cov qauv tsim khoom

Hastelloy B3 piping khoom yog tsim thiab muab tawm tsam cov nram qab no specifications:

 

• ASTM B622 / ASME SB -622 - seamless npib tsib xee thiab npib tsib xee -cobalt alloy yeeb nkab thiab raj
• ASTM B619 / ASME SB -619 - welded yeeb nkab
• ASTM B626 / ASME SB -626 - welded raj
• ASTM B366 - wrought fittings thiab flanges rau cov hlau

 

Seamless yeeb nkab nyob rau hauv B622 yog tsim los ntawm tho thiab ua hauj lwm ib tug billet ntawm lub B3 tshav kub, ua raws li los ntawm kev daws annealing thiab ceev ceev txias. Lub anneal dissolves ib theem nrab tsim thaum lub sij hawm ua hauj lwm thiab restores tag nrho cov austenitic ib leeg -theem qauv uas cov corrosion kuj nyob. Vim hais tias cov hlau yog thermally ruaj khov, lub quench tsis tas yuav ua nruj ua tsiv li B2, thiab lub tshav kub - cuam tshuam cheeb tsam ntawm ib tug welded sib koom tuav nws corrosion kuj tsis muaj ib tug ncej -weld tshav kub kev kho mob.

 

Welded B3 yeeb nkab nyob rau hauv B619 yog tsim los ntawm annealed strip thiab welded nrog txuam ERNiMo-10 muab tub lim hlau. Cov khoom welded yog tag nrho - lub cev annealed tom qab vuam, thiab rau feem ntau hydrochloric acid cov kev pab cuam nws tau teev interchangeably nrog seamless. Seamless tseem yog lub neej ntawd thaum txoj cai kav dej, cov neeg siv khoom tshwj xeeb, lossis qhov xav tau kev pabcuam qaub hu rau nws.

 

Muaj qhov ntau thiab tsawg thiab sijhawm

B3 seamless yeeb nkab yog muab rau hauv lub hnab ntawv hauv qab no, nrog rau qhov nruab nrab qhov ntau thiab tsawg thiab cov phab ntsa kev cai muaj nyob rau hauv qhov kev thov:

 

Parameter	Ntau yam
Sab nraud txoj kab uas hla	6.0 hli (1/8 ") txog 219.1 hli (8"), qhov ntau thiab tsawg ntawm qhov project
Phab ntsa thickness	0.5mm txog 18.26mm (SCH 5S rau SCH XXS)
Ntev	Tsau 6 m / 12 m, lossis random lengths ib qho kev txiav txim
Xaus tiav	Plain kawg, beveled kawg, los yog threaded raws li xav tau
Kuaj	Hydrostatic Test rau ASTM B622

 

Cov txheej txheem ntim khoom rau txheej txheem yeeb nkab yog NPS 1/8 txog NPS 8 hauv SCH 10S, SCH 40S, thiab SCH 80S. Hnyav-phab ntsa thiab loj- txoj kab uas hla yog tsim los tiv thaiv qhov kev nug txog qhov project, thiab lub sij hawm ua cov khoom raug xa mus rau ib qho kev txiav txim. Thaum daim duab hu tawm lub sij hawm es tsis yog cov phab ntsa tuab, ASME B36.10 phab ntsa yog muab tshwj tsis yog qhov tsawg kawg nkaus - kev suav phab ntsa.

 

Corrosion kev ua tau zoo: txo -acid qib

Hastelloy B3 yeeb nkab resists txo cov kua qaub zoo dua li ib qho ntawm cov chromium -cov kabmob npib tsib xee, vim qhov kev tiv thaiv hauv kev txo cov xov xwm yog nqa los ntawm molybdenum, tsis yog chromium. Cov hlau yog cov khoom siv hauv cov kav dej rau hydrochloric acid tshaj nws cov txiaj ntsig zoo, thiab nws ua tau zoo hauv dilute - rau - nruab nrab -concentration sulfuric acid, hauv phosphoric acid, thiab hauv cov kev pabcuam organic acid xws li acetic thiab formic acid.

 

Nws tsis yog tsim rau oxidizing ib puag ncig zoo: nitric acid, ferric chloride, thiab lwm yam oxidizing hom rhuav tshem Ni-Mo matrix sai, yog li cov hlau yuav tsum tsis txhob teev qhov twg oxidizing excursions ua tau.

 

Ib puag ncig	B3 cwj pwm	Saib
Hydrochloric acid, tag nrho cov concentration	Zoo heev	Qhov kev pab txhais lus rau B- tsev neeg
Sulfuric acid, dilute	Zoo heev	Pab tau qhov twg stainless thiab C- alloys yog marginal
Phosphoric acid	Zoo heev	Feem ntau hauv cov txheej txheem chiv
Acetic / formic acid	Zoo	Organic acid txheej txheem kab
Nitric acid thiab oxidizing media	Tsis pom zoo	Kev nrawm nrawm; siv Cr-cov kabmob alloy hloov

 

Qhov sib txawv tseem ceeb ntawm C276 thiab C22 yog cov kev taw qhia: cov alloys sib npaug oxidizing thiab txo qhov tsis kam thiab tso qee qhov kev ua tau zoo hauv cov kua qaub ntshiab; B3 yog tshwj xeeb rau kev txo cov xov xwm thiab muab oxidizing tsis kam tag nrho. Cov txheej txheem uas feem ntau yog hydrochloric acid, tsis muaj oxidizing excursions, yog B3 thaj chaw, thiab siv C276 muaj nkim nyiaj ntawm chromium uas yuav tsis muaj dab tsi. Cov txheej txheem uas hloov pauv ntawm cov kua qaub thiab oxidizing chloride tej yam kev mob yog C- thaj chaw alloy, thiab B3 yuav ua tsis tiav.

 

Tej kev siv

B3 yeeb nkab yog teev nyob rau hauv cov nroj tsuag qhov twg hydrochloric acid los yog lwm yam uas txo cov tshuaj chlorides yog lis tas mus li:

 

• Hydrochloric acid ntau lawm, cia, thiab hloov kab, suav nrog azeotropic thiab anhydrous HCl lub luag haujlwm
• Chlorinated hydrocarbon thiab organic chloride txheej txheem piping hauv tshuaj nroj tsuag
• Alkylation units thiab catalyst regeneration systems nyob rau hauv refineries
• Pulp bleaching tshuaj tshuab qhov twg chlorine dioxide theem siv txo cov mob
• Pharmaceutical thiab agrochemical reactor thiab hloov kab tuav txo cov kua qaub
• Hlau pickling kab siv hydrochloric acid

 

Hauv txhua qhov ntawm cov kev pabcuam no, qhov tshwj xeeb ntawm B3 es tsis yog B2 yog tam sim no tus qauv kev coj ua rau kev tsim kho welded, vim tias kev txhim kho hauv thermal stability tshem tawm cov kev ua haujlwm tsis ua haujlwm uas B2 tau nthuav tawm ntawm cov cua sov- cov cheeb tsam cuam tshuam. Cov nroj tsuag B2 uas twb muaj lawm tau hloov kho dua tshiab - qhia rau B3 rau cov kav dej tshiab, thiab B3 yog cov hlau uas muaj npe nyob rau hauv feem ntau cov qauv kev tsim vaj tsev tam sim no rau kev txo - kua qaub.

 

Vuam thiab fabrication

B3 yeeb nkab yog welded nrog matching filler metal ERNiMo-10 (AWS A5.14 classification) for GTAW and GMAW, and ENiMo-10 (AWS A5.11) for SMAW. Lub B2 muab tub lim ERNiMo-7 yuav tsum tsis txhob hloov, vim nws tsis muaj chromium thiab hlau uas muab B3 nws thermal stability, thiab cov txiaj ntsig weld deposit yuav rov qab mus rau B2 zoo li tus cwj pwm.

 

Tsis tas yuav tsum tau preheat, thiab tsis muaj kev tshaj tawm - vuam cua sov yog ib txwm xav tau. Lub alloy yog rhiab heev rau oxygen thiab nitrogen khaws nyob rau hauv lub molten lub xeev, yog li inert gas shielding ntawm ob lub ntsej muag thiab cov hauv paus hniav ntawm weld yog qhov tseem ceeb, thiab interpass kub yuav tsum tau khaws cia hauv qab no 100℃nyob rau hauv tuab seem kom tsis txhob kub tawg.

 

Fittings thiab flanges rau B3 tshuab tau muab rau ASTM B366 ntawm kev sib txuam chemistry. Tus kws tsim cov kav dej yuav tsum hais cov chav muab tub lim rau ntawm WPS, thiab kev tsim nyog vuam yuav tsum ua raws li cov txheej txheem nickel - alloy es tsis yog cov txheej txheem steel hlau. Vim tias cov alloy hnyav dua thiab qeeb qeeb hauv lub pas dej welding dua li austenitic stainless hlau, qhov haum - txog kev kam rau siab thiab vuam tsis tau tswj tau nruj dua, thiab lub khw yuav tsum yog ib qho uas tsis tu ncua ua haujlwm nickel alloys.

 

Kev tswj kom zoo thiab ntawv pov thawj

Txhua qhov ntev ntawm B3 cov yeeb nkab xa tawm tawm tsam ASTM B622 yog nrog los ntawm daim ntawv pov thawj zeb xeem ntawv qhia txog cov cua sov chemistry, cov txiaj ntsig kev ntsuas tshuab, thiab tsis yog - kev kuaj xyuas kev puas tsuaj. Cov txheej txheem pob suav nrog kev ntsuas hydrostatic uas yuav tsum tau ua los ntawm cov lus qhia tshwj xeeb thiab, qhov twg qhov kev txiav txim xav tau, eddy-tam sim no lossis ultrasonic kuaj ntawm qhov ntev.

 

Kev txheeb xyuas cov ntaub ntawv zoo (PMI) raug pom zoo nyob rau hauv daim ntawv txais nyiaj, vim tias B3, B2, thiab C- alloys yog qhov pom kev tsis pom kev thiab qhov sib txawv ntawm qhov sib txawv tsis pom los ntawm qhov muag. Cov ntawv pov thawj raug muab los ntawm EN 10204 3.1 lossis 3.2 raws li tau teev tseg, thiab thib peb- kev tshuaj xyuas tog los ntawm SGS, BV, lossis TUV yog npaj rau kev thov.

 

Hastelloy B3 yeeb nkab yog cov khoom tshwj xeeb uas nws cov specification yog tsav los ntawm lub hnab ntawv corrosion ntawm cov kev pab cuam, thiab kev txiav txim siab yuav yuav tsum tau ua nyob rau hauv kev tsom xam thiab qhov kub thiab txias profile, tsis yog ntawm tus nqi ib leeg. Thaum cov kab ntawv teev npe UNS N10675, cov yeeb nkab yuav tsum raug txiav txim tawm tsam ASTM B622 nrog rau cov xwm txheej uas tau hais tseg, lub sijhawm teem sijhawm lossis phab ntsa tuab tau muab qhia meej, thiab daim ntawv pov thawj tau lees paub nrog QA txoj kev npaj.

 

 

 

Cim npe nrov: Hastelloy B3 yeeb nkab, UNS N10675, ASTM B622, N10675 seamless yeeb nkab, Hastelloy B-3 raj, nickel molybdenum alloy yeeb nkab, 2.4600, hydrochloric acid alloy yeeb nkab