Alloy 309 (unten s30900) yog ib qho kev siv roj tsis huv stainless hlau tsim rau cov kev siv kub siab tiv thaiv cov ntawv thov. Lub alloy tiv taus oxidation txog 1900¡Ãf (1038¡Ãc) nyob rau hauv tsis-cycling tej yam. Nquag thermal cycling txo oxidation tsis kam kwv yees li 1850¡Ãf (1010¡Ã).
Stainless hlau 304 thiab stainless hlau 304L tseem hu ua 1.4301 thiab 1.4307 feem. Hom 304 yog feem ntau ntau yam thiab ntau yam steel hlau. Nws tseem qee zaum raug xa mus rau ntawm nws lub npe qub, 18 \ / 8, uas tau txais los ntawm nomallation hom 304 yog 18% chromium thiab 8% npib tsib xee.
Hom 316 \ / 316L yog cov chromium-npib tsib xee ustenitic stainless hlau muaj molybdenum. Qhov sib ntxiv ntawm molybdenum txhim kho corrosion tsis kam piv rau 304 \ / 304l hauv cov av halcing thiab hauv cov accphoric thiab phosphoric acid. Hom 316L tuaj yeem ua tiav daim ntawv pov thawj ua 316 thaum cov muaj pes tsawg leeg ua tau raws li cov pa roj carbon qis ntawm 316L thiab qhov muaj zog me ntsis ntawm 316.
Qhov kev daws teeb meem kev daws teeb meem kev kho mob yuav tsum muaj ua ntej hnub nyoog ua kom tawv nqaij tawv. Ib theem microstructure tau tsim thaum lub sij hawm daws annealing yog yuav tsum ua ntej hnub nyoog ua tsaug rau thaum lub sijhawm ua kom tawv tawv yuav muaj nyob hauv cov khoom kawg. Qhov muaj pes tsawg leeg, qhov loj me, thiab ntau npaum li cas cov neeg ua ntej ua ntej siv thaum laus yuav txiav txim cov khoom kawg, thiab lub zog ntxiv tom qab kev laus. Nws yog qhov tseem ceeb uas tus qauv tau muab kho kom zoo ua ntej kev laus txhawm rau kom tau raws li txhua qhov yuav tsum tau ua.
Lub Austenitic stainless hlau 6MO tau tsim los ntawm lub hauv paus ntawm alloy 904l \ / 1.4539. Txawm li cas los xij, cov ntsiab lus molybdenum ntawm 6mo yog nce rau 6,5%. 6MO muaj qhov dav dav corrosion tsis kam thiab txhim kho pitting thiab crevice corrosion tsis kam. Kuj yuav muaj kev ntxhov siab corrosion cracking kuj tau txhim kho. Nws yog feem ntau hu ua super ustenitic stainless hlau.
Stainless hlau 1.452529 hcr yog cov cim los ntawm lub zog corrosion, pitting corrosion, pitting corrosion, pitting corrosion lossis chlorine-indents kev nyuaj siab corrosion. Nws tseem ua rau cov khoom ua pov thawj zoo heev thiab tuaj yeem siv dhau ntawm qhov ntsuas kub ntau. Nws muaj elasticity zoo thiab puas tsis kam nyob rau hauv kev chwv nrog sulfuric lossis phosphoric acid, lossis chlorides thiab ntsev.
Tsis zoo li lwm hom hlau xws li 304 thiab 306, lub 316L Stainless hlau Alloy tuaj yeem siv ntau yam kev siv rau qhov twg siab corrosion yuav tsum muaj. Piv txwv li, cov kws tshaj lij hauv cov tshuaj thiab cov tshuaj lag luam siv nws ua rau kev phais cov cuab yeej thiab kev cog phom.
Annealing yog lub tshav kub kho txheej txheem uas cov ulters microstructure ntawm cov khoom siv los hloov nws cov cuab yeej siv hluav taws xob. Feem ntau, hauv cov hlau, annealing yog siv los txo tus hardness, nce ductility thiab pab tshem tawm sab hauv kev ntxhov siab.
SS 316H forged Tee yog ib qho kev sib txuas luv nrog cov transverse kev txuas ntawm txoj cai ces kaum rau cov yeeb nkab. Feem ntau siv los txuas cov kav dej ntau rau ib qho yeeb nkab nrog ob qho hluav taws xob. Feem ntau, lawv muaj kev nkag. Lub SS 316 forged hla yog siv los ua ke los yog faib cov kav dej ntawm cov kav dej sib txuas ntawm cov pob qij txha thiab cais cov ntws los ntawm txhua cov yeeb nkab.
Annealing yog txheej txheem tshwj xeeb ntawm kev kho cua sov uas cov ulters cov khoom ntawm cov hlau. Thaum muaj ntau hom kev kho cua sov, annealing yog nrov vim tias nws nce dasability thiab txo tawv tawv.
Siab ustenitic welds yog ntau dua feem ntau yuav tawg thaum lub sij hawm vuam. Vim li no, hom 316 thiab hom 316L "txuam" cov cuab yeej siv me me tau tsim los kho nrog me me ntawm ferrite nyob rau hauv lub microstructure kom txo tau cov kev sib cav sib ceg.
Annealing yog txheej txheem kev kho cua sov feem ntau yog siv los ua kom nce siab thiab txo cov tawv tawv ntawm cov khoom. Qhov kev hloov pauv ntawm hardness thiab duction yog qhov tshwm sim ntawm kev txo qis ntawm cov kev tsis sib haum xeeb hauv cov qauv siv lead ua ntawm cov khoom siv anealed. Annealing feem ntau tau ua tom qab cov khoom tau dhau los ua ib qho kev ua haujlwm tawv lossis txias los tiv thaiv nws lub ntsej muag tsis ua haujlwm lossis ua kom yooj yim dua los daws tom qab.
Kev kho cov tshuaj yog qhov kev kho cua sov feem ntau cov txheej txheem cua sov tom qab Stainless Hlau casting txheej txheem. The carbide phase is completely or substantially dissolved after the austenitic stainless steel is heated to about 1100 ¡ãC .
1.4547 und unic s31254 f44 Super Austenitic Stainless Hlau BilletQib Kawm Molybenum-muaj cov qhab nia, thib ob tsuas yog 304 hauv qhov tseem ceeb hauv kev siv tshuaj tiv thaiv tsis siv. Piv rau 304, Molybdenum imparts zoo dua tag nrho corrosion tsis kam rau 316, tshwj xeeb tshaj yog ntau dua rau pitting thiab crevice corrosion hauv chloride ib puag ncig.
Kev daws kev kho kom sov thiab annealing yog cov txheej txheem ntau rau kev kho cua sov ntawm cov hlau uas tsis muaj hlau. Hauv kuv tsab xov xwm kawg, Kuv tau saib cov txheej txheem kho cua sov rau cov hlau ferrous zoo li hlau. Niaj hnub no koj yuav kawm txog cov txheej txheem kho cua sov, suav nrog kev kho kom sov thiab annealing. Koj tseem yuav kawm txog kev ua nag ua tawv tawv, Nitrividing, ua haujlwm txias, Decarburization.
Stainless hlau 316 yog Molybdenum Austenitic alloy uas muaj kev tiv taus corrosive thiab chloride ib puag ncig. Feem ntau, cov qib no ntawm cov hlau stainless yog siv rau hauv kev ua pa tawm, kev sib pauv hluav taws xob, dav hlau tshuab thiab ntau lwm yam kev siv.
Txhawm rau ua kom cov qauv thiab muaj pes tsawg leeg ntawm stainless hlau casting cov khoom sib txuam, vim tias qhov tshwj xeeb tshaj yog rau cov roj raw, vim tias qhov ntsuas txias yog tsis zoo ib yam, ua rau tsis muaj micstructived. Nrog kub siab, cov hauj lwm atomic ua kom muaj zog thiab cov theem |ò dissolves, thiab nws cov tshuaj lom neeg cov tshuaj lom neeg yuav tsis zoo. Ib qho kev hnav khaub ncaws ib leeg-theem yog tau tom qab txias sai sai.
Cov hlau ntawm uns uns s31254 yog ib tus neeg mob siab tshaj plaws. Lawv yog high-kawg stainless hlau tsim rau kev cuam tshuam kov cov tshuaj chloride corrosion, kev nyuaj siab corrosion tawg thiab pitting corrosion. Cov no yog ustenites nrog siab npib tsib xee thiab chromium cov ntsiab lus.
Kev daws Annealing (tseem xa mus rau cov kev daws teeb meem) yog ib qho txheej txheem kev kho cua sov uas muaj ntau cov tsev neeg ntawm cov hlau. Stainless hlau, aluminium alloys, npib tsib xee-based superalloys, titanium alloys, thiab qee cov topper-allys tag nrho cov yuav xav tau kev daws teeb meem.
304 yog chromium-npib tsib xee ustenitic steel hlau. Zoo dua corrosion tsis kam ntau dua hom 302. Kev du me me, kev kos duab zoo heev, kev sib sau thiab kev sib txuas. Inherently tsis muaj kev sib nqus, nws ua cov hlau nplaum me ntsis thaum ua haujlwm txias. Cov pa roj carbon qis txhais tau tias tsawg los ntawm cov neeg muaj nag lossis daus hauv cov cua sov nyob rau hauv lub tshuab cua sov nyob rau hauv cov pa kub.
304,304L, 304H, 309h, 310H, 310H, 316,34L, 311,34sh, 904sh, 904sh, 904Smo, Al6KHou Huitong Pipeline Equipment Co., Ltd.
Tus qauv Austenitic ntawm 316 stainless hlau muab cov tawv muaj zog zoo txawm tias tsis kub.
Kev txhawb nqa lossis ntev nthuav dav ntawm hom 316L rau 800-1500ÃF (427-816¡Ãc) yuav muaj kev phom sij. Ib qho ntxiv, kev nyuaj siab kev daws teeb meem nruab nrab ntawm 100-1500ÃF (593-816¡Ãc) tej zaum yuav ua rau hom me me embrittlitty.
Thaum 300 series stainless cov hlau yog nrov heev, lawv tsis yog thoob ntiaj teb tsim nyog rau tag nrho cov txheej txheem cov txheej txheem kev siv piping daim ntawv thov. Piv txwv li, txawm hais tias lawv yog corrosion resistant, 300 series formulations tsis ua tau zoo nyob rau hauv muaj ntawm chlorides. Hauv cov xwm txheej no, cov hlau nrog ntau dua cov ntsiab lus ntau dua li molybdenum, chromium thiab npib tsib xee yog nyiam.
Hom 316 yog ntau tiv taus rau cov sulfuric acid daws teeb meem tshaj lwm yam chromium-tsib xee. Hom 316 tiv taus cov kua qaub ntev txog 5% ntawm qhov kub thiab txias txog 120¡ÃF (49¡ÃF). Cov hom no tau tiv thaiv zoo heev rau cov kev cuam tshuam ntau dua ntawm qhov kub hauv qab 100¡u F (38¡Ã C).
Feem ntau, hom 316 qib yuav raug suav tias muaj kev sib luag zoo nyob rau hauv ib puag ncig ib puag ncig. Ib qho kev zam tseem ceeb yog intergranular corrosion nyob rau hauv lub tshav kub-cuam tshuam rau welds nyob rau hauv cov chaw muaj kev sib txuam txaus. Hauv cov xov xwm zoo li no, hom 316L yog qhov tsim nyog rau kev siv vuam dua hom 316 vim tias cov ntsiab lus muaj roj carbon ntau ntxiv rau hauv kev txhim kho corrosion.
Type 316 alloy is considered suitable for some marine environment applications, such as ship rails and hardware, and the exterior walls of buildings near the ocean that are exposed to salt spray. Hom 316 Stainless hlau qhia tsis muaj pov thawj ntawm kev corrosion hauv 100-teev, 5% kev sim.
SS 316 Forged cov yeeb nkab fittings raug siv los khoov cov dej ntws thiab txuas ob lub pas dej sib txawv ntawm cov ces kaum sib txawv. Lawv yuav tsum raug tsim los ntawm txoj kev zoo li no uas lawv tsis ua rau cavitation thiab ntau dhau los poob.
Austenitic stainless hlau yog raug rau kev ntxhov siab corrosion cracking (SCC) hauv cov av halc. Txawm hais tias hom 316 alloys muaj kev tiv taus scc ntau dua 18cr-8 ni alloys vim lawv molybdenum cov ntsiab lus, lawv tseem muaj kev pheej hmoo. Cov mob uas tsim scc no yog: (1) Lub xub ntiag ntawm cov hales (feem ntau cormal
Txhawm rau rov qab ua kom muaj qhov tsis muaj mob corrosion tsis kam ntawm cov hlau stainless hlau. Lub corrosion tsis kam ntawm cov hlau stainless tsawg dua tom qab kev nqis peev casting. Lub corrosion tsis kam ntawm stainless hlau castings zoo rov qab rau qhov zoo tshaj plaws lub xeev tom qab kev kho ntshav.
