Hauv cov ntawv thov cua sov hauv kev lag luam, qhov kev ntseeg siab, kev nyab xeeb, thiab ntev -tus nqi- kev ua tau zoo yog qhov tseem ceeb, kev nkag siab yuam kev ntawm cov khoom siv tuaj yeem ua rau muaj kev puas tsuaj rau cov cuab yeej siv tsis zoo, lub sijhawm poob qis, thiab kev poob nyiaj txiag ntau. Ob qhov kev xav tsis tu ncua thiab raug nqi ntau yog nyob ib ncig ntawm kev siv stainless hlau cartridge rhaub-tshwj xeeb, kev txhais lus tsis raug ntawm 316 stainless hlau qhov haum rau siab - qhov kub thiab txias qhov sib npaug ntawm tag nrho cov ntaub ntawv sau tias "310S." Cov kev nkag siab tsis zoo no tshwm sim los ntawm kev nkag siab ntawm cov khoom siv hlau tsis zoo thiab nyiam ua qhov tseem ceeb luv luv -lub sij hawm yooj yim los yog pom "zoo" tshaj cov khoom siv tshwj xeeb, feem ntau ua rau muaj kev cuam tshuam kev ua haujlwm thiab cov nuj nqis tsis tsim nyog.
Ib qho kev xav tsis zoo thiab pheej yig yog kev ntseeg tias 316 stainless hlau tsuas yog "qib siab dua" ntawm 304 thiab yog li tsim nyog rau txhua qhov kub siab. Qhov kev xav no saib xyuas qhov tseem ceeb ntawm kev sib txawv ntawm cov hlau sib txawv ntawm ob lub alloys, uas yog tsim los rau cov kev pab cuam sib txawv es tsis yog kev hloov hierarchical . 316 stainless hlau yog qhov hloov kho dua tshiab ntawm 304, tab sis nws qhov kev txhim kho tseem ceeb nyob rau hauv qhov sib ntxiv ntawm molybdenum (feem ntau 2-} cov ntsiab lus ntau dua nick 3% (10-14% piv rau 8-12% hauv 304). Molybdenum lub luag haujlwm tseem ceeb yog txhawm rau txhim kho kev tiv thaiv pitting thiab crevice corrosion nyob rau hauv chloride-nplua nuj ib puag ncig-xws li marine chaw, tshuaj ua cov nroj tsuag, los yog cov ntaub ntawv uas muaj dej ntsev los yog caustic daws. Cov cuab yeej no tsis muaj nuj nqis nyob rau hauv qhov chaw corrosive ntawm qhov kub nruab nrab, tab sis nws tsis muaj txiaj ntsig zoo thaum ua haujlwm ntawm qhov kub siab tshaj 900 degree.
Ntawm qhov kub siab, qhov kev ntsuas tseem ceeb rau stainless hlau yog thermal oxidation tsis kam - muaj peev xwm tiv taus degradation thaum raug siab - cua kub lossis oxygen. Ob leeg 304 thiab 316 stainless hlau cia siab rau nyias, tiv thaiv chromium oxide txheej (chromia) los tiv thaiv oxidation, tab sis qhov ruaj khov ntawm txheej txheej no txo qis qis dua 870 degree. Qhov tseem ceeb, cov thermal oxidation tsis kam ntawm 316 tsuas yog marginally zoo dua 304; cov molybdenum uas txhim kho corrosion kuj tsis ntxiv dag zog rau chromia txheej los yog txhim kho siab - kub stability. Qhov tseeb, siv 316 stainless hlau cartridge rhaub nyob rau hauv 950℃daim ntawv thov tsis yog ib qho kev xaiv tsim qauv- nws yog ib txoj hauv kev uas yuav ua rau tsis ua tiav ntxov. Sij hawm dhau mus, txheej chromia ntawm 316 yuav tawg, ua rau kom nrawm nrawm (tsim ntawm tuab, nkig oxide deposits), grain ciam teb embrittlement, thiab qhov kawg ntawm lub cua sov tsis ua hauj lwm. Ua ke qhov teeb meem, 316 stainless hlau feem ntau kim dua 304, txhais tau hais tias cov neeg ua haujlwm them tus nqi them rau cov khoom siv uas tsis muaj txiaj ntsig hauv siab -kev pabcuam kub-thiab tej zaum yuav ua tsis tau sai dua li lwm txoj hauv kev, xws li 310S.
Lwm qhov teeb meem tseem ceeb yog qhov kev xav tias tag nrho cov khoom siv sau tias "310S" yog sib npaug . 310S yog siab -chromium, siab-nickel austenitic stainless hlau (24-26% chromium, 19-22% nickel) zoo heev rau kev ua haujlwm thermal, tshwj xeeb tshaj yog oxidation. mus txog 1150 degree. Nws yog tus qauv kub rau cov tshuab cua sov hauv siab - daim ntawv thov kub, los ntawm kev kho cua sov rau cov qhov cub ua haujlwm. Txawm li cas los xij, kev lag luam thoob ntiaj teb stainless hlau yog tawg, nrog rau kev hloov pauv tseem ceeb hauv cov khoom siv raw zoo, cov qauv tsim, thiab ua raws li kev lag luam specifications. Qee cov tuam txhab, nrhiav kev txiav cov nqi, qhov chaw 310S nrog cov ntsiab lus chromium lossis npib tsib xee ntawm qhov kawg qis kawg ntawm ASTM A240 specification range-lossis txawm me ntsis hauv qab nws. Lwm tus tuaj yeem siv cov khoom siv raw nrog cov qib siab ntawm cov khoom seem xws li sulfur thiab phosphorus, uas yog qhov tsis tuaj yeem zam tsis tau tab sis tuaj yeem ua rau cov hlau tsis zoo rau qhov kub thiab txias yog tias muaj ntau dhau.
Cov khoom siv tsis zoo no tseem tuaj yeem ua tau raws li qib nominal "310S" hauv kev sim tsis tu ncua, tab sis nws yuav ua rau muaj kev cuam tshuam oxidation tsis zoo, txo qis zog (lub peev xwm los tiv thaiv deformation nyob rau hauv siab kub thiab load), thiab luv luv kev pab cuam lub neej piv rau tag nrho raws li 310S. Piv txwv li, lub tshuab rhaub cartridge ua nrog qis -chromium 310S tuaj yeem pib ntsuas thiab ua tsis tiav tom qab ob peb puas teev ntawm kev pabcuam ntawm 1000 degree, thaum lub tshuab rhaub ua nrog 310S ua tau zoo tuaj yeem kav ntev txog kaum txhiab teev nyob rau hauv tib lub sijhawm. Tus nqi ntawm qhov tsis ua haujlwm no txuas mus deb dhau ntawm kev hloov lub tshuab rhaub nws tus kheej: lub sijhawm tsis tau npaj tseg tuaj yeem nres cov kab ntau lawm, yuav tsum tau kho qhov xwm txheej kim, thiab ua rau cov nyiaj tau los poob- cov nqi uas feem ntau dwarf qhov pib txuag los ntawm kev siv cov khoom siv tsis zoo.
Lub 310S stainless hlau cartridge tso cua sov rau huab cua txias heev - qhov kev pabcuam kub yuav tsum ib txwm ua nrog daim ntawv qhia txog zeb xeem (MTR) lossis cov ntaub ntawv pov thawj pov thawj kev ua raws li ASTM A240- tus qauv tswj hwm rau chromium thiab chromium-nickel stainless hlau phaj, ntawv, thiab sawb. Daim ntawv pov thawj no tsis yog kev ua haujlwm; nws muab cov ntaub ntawv pov thawj, batch-cov ntaub ntawv tshwj xeeb ntawm cov tshuaj muaj pes tsawg leeg (xws li chromium, npib tsib xee, molybdenum, thiab cov khoom seem) thiab cov khoom siv kho tshuab (xws li lub zog tensile thiab creep resistance) ntawm cov khoom siv los tsim lub rhaub. Kev txheeb xyuas cov ntaub ntawv no yog ib qho yooj yim, meej cov kauj ruam los xyuas kom meej tias lub tshuab rhaub cartridge yuav ua raws li tau teev tseg, tsis txhob cuam tshuam cov khoom siv tsis zoo. Hmoov tsis zoo, ntau tus neeg ua haujlwm hla cov kauj ruam no, xav tias "310S" daim ntawv lo ib leeg yog qhov txaus-kev ua yuam kev uas tuaj yeem ua rau muaj nqi tsis txaus thiab cuam tshuam rau kev ua haujlwm.
Cov kev xav tsis zoo no tsis yog kev saib xyuas nkaus xwb; lawv muaj kev cuam tshuam dav dav rau qhov tseem ceeb luv luv -lub sij hawm txuag nqi los yog qhov yooj yim "qib hierarchy" xav txog engineering precision. Hauv kev lag luam cua sov, tsis muaj ib qho - loj- haum- stainless hlau: 316 yog qhov zoo tagnrho rau corrosive, nruab nrab- qhov kub thiab txias, thaum 310S yog tib txoj kev xaiv rau qhov kub thiab txias. Ib yam li ntawd, xav tias tag nrho "310S" yog tib yam tsis quav ntsej txog qhov tseeb -kev hloov pauv hauv ntiaj teb ntawm cov khoom zoo thiab qhov tseem ceeb ntawm daim ntawv pov thawj. Los ntawm kev tshem tawm cov lus dab neeg no thiab ua qhov tseem ceeb ntawm cov khoom siv tshwj xeeb- suav nrog kev txheeb xyuas MTRs thiab nkag siab txog cov txheej txheem metallurgical ntawm kev ua tau zoo ntawm alloy- cov neeg ua haujlwm tuaj yeem zam kev ua tsis tiav ntxov, txo qis sijhawm, thiab ua tiav ntev - nqes nqi - kev ua tau zoo hauv lawv daim ntawv thov cua sov.
