ASTM A 312 304 hs 30409 1. 4301 Cov Hlau Stainless Hlau

ASTM 312 304 hs {{1} {{} h stainless hlau hlab, unst sction (stainless hlau 3049 stainless hlau 3049 stainless hlau 3049 stainless hlau 3049 stainless hlau 3049 stainless hlau 3049 stainless hlau 3049 Stainless Hlau AISI 304H YEEB NKAB.

Dab tsi yog 304h stainless hlau yeeb nkab?

ASTM A 312 304 hs 30409 1. 4301 Cov Hlau Stainless Hlauyog lub siab carbon variant ntawm cov dav siv 304 stainless hlau. Lub hom phiaj tseem ceeb ntawm kev hloov kho no yog txhawm rau txhim kho nws cov kev ua tau zoo hauv cov ntawv thov kub siab. Nrog rau cov ntsiab lus carbon ntau dua piv rau tus qauv 304, 304H tau tsim tshwj xeeb los tswj nws cov qauv txheej txheem, thiab corrosion tsis kub, ua rau nws siv cov chaw xav tau.

Yuav ua li cas 304 leej sib txawv ntawm 304

Lub ntsiab sib txawv ntawm 3 {{{0 4H thiab tus qauv 3 {lus nyob rau hauv cov ntsiab lus carbon. Thaum 3 0 4 feem ntau muaj qhov siab tshaj plaws ntawm 0.08% Carbon, 304h nce qhov ntau no rau ntawm 0.04% thiab 0.10%. Qhov kev txhawb nqa cov theem uas tau txhawb nqa kom zoo dua los txhim kho kom zoo dua qhov muaj peev xwm ua kom muaj peev xwm tiv thaiv kev ntxhov siab thiab kev tawm suab nrov tshaj lub sijhawm ntev.

Hauv kev sib piv, tus qauv 304 yog qhov zoo dua rau cov ntawv thov uas corrosion tsis kam thiab yooj yim ntawm Fabrication yog cov kev txhawj xeeb thawj zaug.

Cov ntsiab lus tseem ceeb thiab lawv cov luag haujlwm hauv qhov kub-ua tsis taus

Cov pa roj carbon (c):Cov ntsiab lus ntawm cov pa roj carbon ntau ntxiv hauv 304h txhim kho nws qhov kev kub siab-kub los ntawm kev tsim cov carbides thaum tshav kub. Cov carbides ua hluav taws xob tswj tau micructure microstructure thiab tiv taus creep deformation nyob rau hauv thermal kev ntxhov siab.

Chromium (CR):Chromium, tam sim no nyob rau ib ncig 18-20%, ua ib txheej oxide ruaj khov rau saum npoo, uas muab oxidation tsis kam. Cov txheej no tiv thaiv ntxiv oxidation thiab ua kom muaj kev ntev, txawm tias nyob hauv ib puag ncig kub.

Nickel (NI):Cov ntsiab lus npib tsib xee, feem ntau {{8-10. 5%, ua rau muaj kev sib zog tag nrho, ductance rau kev nthuav dav.

Manganese (MN):Manganese pab nyob rau hauv stabilizing cov qauv Austenic thiab txhim kho cov khoom siv tiv thaiv kom kub tawg thaum vuam.

Oxidation tsis kam nyob rau hauv 304h

Cov oxidation zoo tiv thaivASTM A312 Tp304h stainless hlau leegtuaj yeem yog ntaus nqi rau nws cov ntsiab lus chromium. Chromium reacts nrog oxygen los ua ib qho kev tiv thaiv chromium oxide (cr2o3) txheej ntawm saum npoo. Cov txheej no yog kev kho tus kheej thiab tiv thaiv kev ntsuas oxidation ntxiv, txawm tias nyob ntawm qhov kub thiab txias txog 899 degree (1650 degree f). Nickel txhim kho cov khoom ntiag tug los ntawm nce cov ntaub ntawv muaj peev xwm tswj hwm nws cov qauv Autrenitic nyob rau hauv cov xwm txheej huab.

Weldability: yam dhau ntawm kev tawv tawv

304H Weldability tsis yog ib qho ntawm nws lub hardness tab sis yog cuam tshuam los ntawm ntau yam:

Austenitic qauv:Lub Austenitic microstructure yog inherly coo thiab pab txhawb kev vuam tsis muaj kev pheej hmoo txaus ntshai ntawm kev tawg.

Tswj cov ntsiab lus carbon:Thaum lub zog ua kom muaj zog txhim kho lub zog ntawm kev nce siab kub,ASTM A 312 304 h stainless hlau tubingTseem tseem nyob rau hauv ib qho ntau uas txwv tsis pub muaj nag lossis daus ntau, uas tuaj yeem ua rau muaj kev cuam tshuam rau kev txhim kho corrosion.

Alloying ntsiab:Cov ntsiab zoo li manganese thiab silicon txo qhov kev pheej hmoo ntawm weld tsis xws luag, kom ntseeg tau du thiab txhim khu kev qha zoo.

Yam rau kev ruaj khov

High-kub lub zog:Lub siab carbon cov ntsiab lus ua kom muaj kev ruaj khov nyob rau hauv lub sijhawm ntev ntawm cov chaw kub.

Corrosion Kuj:Lub chromium oxide txheej tiv thaiv oxidation thiab corrosion hauv ntau qhov chaw.

Taus:Npib tsib xee ua rau tusStainless hlau 304h rajQhov muaj peev xwm tiv thaiv kev ntxhov siab tsis muaj kev ntxhov siab yam tsis muaj nkig.

Microstructure stability:Kev tsim ntawm carbides ntawm qhov kub thiab txias deformation thiab txhim kho kev ua siab ntev.

Cov Kev Siv ntawm 304H Stainless Hlau Kav

UNTS UNLESS HLAU PIPEtau siv dav hauv kev lag luam uas xav tau cov ntaub ntawv ua kom muaj kev ntseeg siab nyob rau hauv cov kev kub thiab kev xeb ib puag ncig. Cov ntawv thov feem muaj xws li:

Lub zog tiam:Siv rau hauv boilers, superheaters, thiab cua sov sib pauv vim lawv muaj peev xwm tiv taus thermal kev ntxhov siab.

Petrochemical Kev Lag Luam:Qhov zoo tagnrho rau kev ua cov cuab yeej siv uas tau ntsib cov pa roj cua sov thiab kua roj ntau.

Tshuaj lom neeg:Resistant rau oxidation thiab corrosion los ntawm kev ua kom muaj kuab lom thiab cua sov heev.

Cov tshuab luam ntawv:Haum rau kev thauj mus los cov pa dej haus kub-kub thiab roj av.

Tej yam cub tawg:Ua tau zoo nyob rau hauv ib cheeb tsam uas muaj kev sib kis kom sov.

AISI 304H YEEB NKAB's tshwj xeeb ua ke ntawm lub zog siab, oxidation tsis kam, thiab ua kom ruaj khov ua kom nws txoj haujlwm tseem ceeb hauv kev lag luam tseem ceeb hauv kev lag luam tseem ceeb hauv kev lag luam tseem ceeb.

Chemistry sib xyaw ntawm Astm A312 TP30H YEEB

Cov Cuab Yeej Siv Cov Neeg Kho Tshuab ntawm ASTM A312 TP30H Tube

Cim npe nrov: ASTM A 312 304 hs 30409 1. 4301 Cov Yeeb Nkab Hlau, Tuam Tshoj, Nqe, Me Nyuam