Stainless hlau yog qhov kev xaiv nrov rau kev ua cov twj paj nruag.Kev kawm txog cov hlau tsis muaj steel tuaj yeem pab cov neeg siv cov cuab yeej ua tau zoo ntawm kev xaiv thiab siv cov cuab yeej zoo.
Stainless hlau, feem ntau hu ua SS, muaj peev xwm tiv taus huab cua, chav dej, dej, thiab lwm yam corrosive me me.Lub caij no, cov hlau uas muaj peev xwm tiv taus cov tshuaj lom neeg los ntawm cov khoom xws li acid, alkali, ntsev, thiab lwm yam tshuaj etchants, hu ua acid-resistant steel.
Stainless hlau, tseem hu ua stainless acid-resistant steel, tuaj yeem tiv taus huab cua, chav, dej, thiab cov tshuaj corrosive me me.Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias tsis yog tag nrho cov hlau tsis muaj zog tiv taus cov tshuaj corrosion.Ntawm qhov tod tes, acid-resistant steel yog tsim los tiv thaiv cov teebmeem ntawm cov tshuaj lom neeg xws li kua qaub, alkali, thiab ntsev.Lub corrosion kuj ntawm stainless hlau yog txiav txim los ntawm cov alloying ntsiab nyob rau hauv cov hlau.
Kev faib ua feem
Feem ntau muab faib los ntawm lub koom haum metallographic:
Nyob rau hauv lub realm ntawm metallographic koom haum, ib txwm stainless hlau yog feem ntau categorized rau hauv peb pawg: Austenitic stainless hlau, ferritic stainless hlau, thiab martensitic stainless hlau.Cov pawg no tsim lub hauv paus, thiab los ntawm qhov ntawd, biphase steel, nag lossis daus-hardened stainless hlau, thiab cov hlau alloy siab uas muaj tsawg dua 50% hlau tau tsim los ua kom tau raws li cov kev xav tau tshwj xeeb thiab ua haujlwm tshwj xeeb.
1, Tsis-Magnetic Stainless Hlau
Hom stainless hlau no muaj cov qauv siv lead ua hu ua austenitic, uas yog txhawb zog los ntawm kev ua haujlwm txias.Nws tsis yog hlau nplaum, tab sis 200 thiab 300 series tooj, zoo li 304, feem ntau siv los ntawm American Iron and Steel Institute los txheeb xyuas cov hlau no.
2, Stainless hlau feem ntau yog hlau
Hom stainless hlau no feem ntau muaj cov qauv siv lead ua los ntawm ferrite (theem A), uas yog hlau nplaum.Nws feem ntau tsis tuaj yeem ua kom tawv los ntawm cua sov, tab sis kev ua haujlwm txias tuaj yeem ua rau muaj zog me ntsis.Lub koom haum American Iron thiab Steel qhia txog 430 thiab 446 ua piv txwv.
3, Cov Hlau Stainless
Hom stainless hlau no muaj cov qauv siv lead ua hu ua martensitic uas yog hlau nplaum.Nws cov khoom siv kho tshuab tuaj yeem hloov pauv los ntawm kev kho cua sov.Lub koom haum American Iron thiab Steel hais txog nws li 410, 420, thiab 440. Martensite pib nrog cov qauv austenitic ntawm qhov kub thiab txias thiab tuaj yeem hloov mus rau martensite (piv txwv li, hnyav dua) thaum nws txias ntawm qhov ceev mus rau chav sov.
4, Duplex Stainless hlau
Hom stainless hlau no muaj kev sib xyaw ntawm cov qauv austenitic thiab ferritic.Qhov kev faib ua feem ntawm cov theem qis hauv cov qauv feem ntau yog ntau dua 15%, ua rau nws sib nqus thiab muaj peev xwm ua kom muaj zog los ntawm kev ua haujlwm txias.329 yog ib qho piv txwv zoo ntawm hom stainless hlau no.Thaum muab piv rau austenitic stainless hlau, duplex steel pom muaj zog ntau dua thiab qhov tseem ceeb nce hauv kev tiv thaiv intergranular corrosion, chloride stress corrosion, thiab taw tes corrosion.
5, Stainless hlau nrog nag lossis daus hardening muaj peev xwm
Hom stainless hlau no muaj cov matrix uas yog austenitic lossis martensitic thiab tuaj yeem ua kom tawv los ntawm nag lossis daus hardening.American Hlau
thiabLub koom haum Steel muab 600 series tooj rau cov hlau no, xws li 630, uas tseem hu ua 17-4PH.
Feem ntau, ib sab ntawm alloys, austenitic stainless hlau muaj qhov tshwj xeeb corrosion kuj.Rau qhov chaw tsis muaj corrosive tsawg, ferritic stainless hlau tuaj yeem siv tau, thaum nyob rau hauv qhov chaw me me uas muaj zog corrosive los yog hardness, martensitic stainless hlau thiab nag lossis daus hardened stainless hlau yog cov kev xaiv tsim nyog.
Nta thiab daim ntawv thov thaj chaw
Nto tshuab
Thickness sib txawv
1, vim hais tias steel zeb machinery nyob rau hauv cov txheej txheem dov, lub yob kub tshwm me ntsis deformation, ua rau lub thickness ntawm dov tawm board sib txawv, feem ntau tuab ntawm ob sab ntawm nyias.Thaum ntsuas lub thickness ntawm lub rooj tsavxwm, lub xeev teev tias qhov nruab nrab ntawm lub rooj tsavxwm lub taub hau yuav tsum tau ntsuas.
2, vim li cas rau kev kam rau siab yog raws li kev lag luam thiab cov neeg siv khoom xav tau, feem ntau muab faib ua qhov siab ntev thiab me me: piv txwv li,
Dab tsi ntawm stainless hlau tsis yooj yim rau xeb?
Muaj peb yam tseem ceeb cuam tshuam rau stainless hlau corrosion:
1, cov ntsiab lus ntawm alloying ntsiab.
Kev cuam tshuam ntawm Alloying Elements Feem ntau, cov hlau uas muaj tsawg kawg yog 10.5% chromium ua rau pom kev tiv thaiv xeb.Tsis tas li ntawd, stainless hlau nrog qib siab ntawm chromium thiab npib tsib xee, raws li pom hauv 304 steel nrog 8-10% nickel thiab 18-20% chromium, qhia txog kev txhim kho corrosion thiab feem ntau tiv taus xeb hauv cov xwm txheej raug.
2. Kev cuam tshuam ntawm Smelting txheej txheem ntawm Corrosion Resistance
Kev tiv thaiv corrosion ntawm stainless hlau kuj tuaj yeem cuam tshuam los ntawm cov txheej txheem smelting hauv cov chaw tsim khoom.Loj-scale stainless hlau nroj tsuag nruab nrog cov cuab yeej siv siab heev thiab cov cuab yeej siv niaj hnub tuaj yeem ua kom ruaj khov thiab txhim khu kev qha cov khoom zoo los ntawm kev tswj xyuas cov ntsiab lus alloying, zoo tshem tawm impurity, thiab kev tswj xyuas meej ntawm billet txias txias.Qhov no ua rau muaj kev ua tau zoo hauv sab hauv thiab txo qis rau xeb.Hloov pauv, me me steel mills nrog cov cuab yeej siv tsis tu ncua thiab thev naus laus zis tuaj yeem tawm tsam kom tshem tawm cov impurities thaum smelting, ua rau tsis muaj xeb ntawm lawv cov khoom.
3. Sab nraud ib puag ncig, kev nyab xeeb yog qhuav thiab qhov cua nyob ib puag ncig tsis yooj yim rau xeb.
Qhov xwm txheej ntawm ib puag ncig sab nraud, tshwj xeeb yog huab cua qhuav thiab zoo-ventilated, tsis txhawb kev tsim xeb.Hloov pauv, cov huab cua siab siab, huab cua ntev los nag, lossis ib puag ncig nrog qib pH siab tuaj yeem ua rau xeb tsim.Txawm tias 304 stainless hlau yuav xeb yog tias raug rau ib puag ncig tsis zoo.
Stainless hlau zoo li xeb qhov chaw yuav ua li cas nrog?
1. Cov txheej txheem tshuaj
Siv cov txheej txheem tshuaj xws li muab tshuaj txhuam los yog tshuaj tsuag los pab txhawb kev rov ua dua ntawm thaj chaw xeb, tsim cov chromium oxide zaj duab xis uas rov ua kom muaj kev tiv thaiv corrosion.Tom qab pickling, kom huv si yaug nrog dej yog qhov tseem ceeb kom tshem tawm tag nrho cov kab mob thiab acid residues.Ua kom tiav cov txheej txheem kho mob los ntawm repolishing nrog cov khoom tsim nyog thiab sealing nrog siv quav ciab.Rau cov chaw me me hauv zos xeb, 1: 1 sib tov ntawm cov roj av thiab roj tuaj yeem siv nrog cov ntaub huv huv kom tshem tawm cov xeb.
2. Mechanical method
Kev siv cov xuab zeb blasting, iav los yog ceramic particle tua blasting, abrading, txhuam, thiab polishing yog lub cev txoj hauv kev rau tshem tawm cov paug tawm los ntawm kev ua ntej polishing los yog abrading.Txhua hom kev sib kis, tshwj xeeb tshaj yog cov hlau txawv teb chaws, tuaj yeem ua rau corrosion, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej.Yog li, nws raug nquahu kom ua tiav kev tu lub cev ntawm qhov chaw nyob rau hauv qhov chaw qhuav.Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias daim ntawv thov ntawm lub cev txoj kev tuaj yeem tsuas yog tshem tawm cov impurities ntawm qhov chaw thiab tsis hloov qhov kev tiv thaiv corrosion ntawm cov khoom.Yog li ntawd, nws yog advisable kom ua tiav cov txheej txheem los ntawm repolishing nrog cov khoom tsim nyog thiab sealing nrog polishing wax.
Cov cuab yeej siv feem ntau siv stainless hlau qib thiab kev ua haujlwm
1, 304 stainless hlau yog ib qho khoom siv zoo austenitic stainless hlau, zoo tagnrho rau kev tsim cov khoom sib sib zog nqus.cnc machined Cheebtsam, acid pipelines, ntim khoom, cov khoom siv, thiab ntau lub cev ntsuas.Tsis tas li ntawd, nws muaj peev xwm tsim cov khoom siv tsis muaj hlau nplaum thiab cov khoom siv kub thiab cov khoom siv.
2, 304L stainless hlau yog siv los hais txog qhov cuam tshuam ntawm intergranular corrosion ntawm 304 stainless hlau vim Cr23C6 nag lossis daus nyob rau hauv tej yam kev mob.Lub xeev sensitized ntawm no ultra-low carbon austenitic stainless hlau muaj kev txhim kho intergranular corrosion kuj piv rau 304 stainless hlau.Tsis tas li ntawd, thaum nws nthuav tawm lub zog me ntsis, nws muaj cov khoom zoo sib xws nrog 321 stainless hlau thiab feem ntau yog ua haujlwm rau vuam.Nws yog qhov zoo rau kev tsim khoom ntawm ntau yam ntsuas lub cev thiab cov cuab yeej tiv thaiv corrosion thiab cov khoom siv uas tsis tuaj yeem raug kho cov kev daws teeb meem.
3, 304H stainless hlau.Cov ceg sab hauv ntawm 304 stainless hlau, carbon loj feem ntawm 0.04% -0.10%, kev kub siab ua haujlwm zoo dua li 304 stainless hlau.
4, 316 stainless hlau.Qhov sib ntxiv ntawm molybdenum ntawm lub hauv paus ntawm 10Cr18Ni12 steel ua rau cov hlau muaj kev tiv thaiv zoo los txo cov xov xwm thiab taw tes corrosion.Hauv dej hiav txwv thiab lwm yam xov xwm, kev tiv thaiv corrosion zoo dua li 304 stainless hlau, feem ntau yog siv rau cov khoom siv pitting.
5, 316L stainless hlau.Ultra-tsawg carbon steel, nrog zoo tsis kam mus rau sensitized intergranular corrosion, haum rau kev tsim khoom ntawm welded qhov chaw thiab cov khoom siv nrog tuab tuab qhov ntau thiab tsawg, xws li corrosion resistant cov ntaub ntawv nyob rau hauv petrochemical khoom.
6, 316H stainless hlau.316 stainless hlau sab hauv ceg, carbon loj feem ntawm 0.04% -0.10%, kub kub ua tau zoo dua 316 stainless hlau.
7, 317 stainless hlau.Pitting thiab creep kuj zoo dua 316L stainless hlau, siv nyob rau hauv kev tsim cov petrochemical thiab organic acid corrosion resistant khoom.
8, 321 stainless hlau yog austenitic stainless hlau nrog titanium stabilization.Qhov sib ntxiv ntawm titanium yog tsom rau kev txhim kho qhov tsis kam mus rau intergranular corrosion, thiab nws kuj nthuav tawm cov khoom siv zoo nkauj ntawm qhov kub thiab txias.Nyob rau hauv feem ntau cov xwm txheej, nws tsis raug pom zoo siv, tshwj tsis yog rau cov xwm txheej tshwj xeeb xws li ntsib qhov kub thiab txias lossis hydrogen-induced corrosion.
9, 347 stainless hlau yog austenitic stainless hlau alloy uas ruaj khov nrog niobium.Qhov sib ntxiv ntawm niobium pab txhim kho nws cov kev tiv thaiv rau intergranular corrosion thiab nws muaj peev xwm tiv taus corrosion nyob rau hauv acidic, alkaline, ntsev, thiab lwm yam hnyav tshuaj ib puag ncig.Nws kuj nthuav tawm cov yam ntxwv zoo heev ntawm vuam, ua rau nws tsim nyog siv los ua cov khoom siv corrosion-resistant thiab kub-resistant steel.Cov hlau alloy no feem ntau yog siv rau hauv thermal zog thiab petrochemical kev lag luam rau ntau yam kev siv xws li cov thawv ntim khoom, cov kav dej, cov khoom siv hluav taws xob, cov shafts, thiab cov tub rauv rau hauv cov khoom siv hluav taws xob, nrog rau cov khoom siv hluav taws xob hauv lub tshuab hluav taws xob.
10, 904L stainless hlau yog cov qib siab austenitic stainless hlau tsim los ntawm OUTOKUMPU (Finland) nrog cov ntsiab lus npib tsib xee txij li 24% mus rau 26% thiab cov ntsiab lus carbon tsawg dua 0.02%.Nws boasts tshwj xeeb corrosion kuj thiab ua tau zoo nyob rau hauv non-oxidizing acids xws li sulfuric acid, acetic acid, formic acid, thiab phosphoric acid.Tsis tas li ntawd, nws qhia tau hais tias muaj zog tiv thaiv rau crevice corrosion thiab kev nyuaj siab corrosion.Nws yog qhov zoo rau kev siv nrog sulfuric acid ntawm ntau qhov ntau hauv qab 70 ℃ thiab muaj kev tiv thaiv corrosion zoo tshaj hauv acetic acid thiab cov kua qaub sib xyaw ntawm formic acid thiab acetic acid ntawm txhua qhov concentration thiab kub hauv qab lub siab.Ameslikas muab faib ua npib tsib xee-raws li alloy raws li tus qauv ASMESB-625, tam sim no tau muab faib ua stainless hlau.Thaum Tuam Tshoj tus 015Cr19Ni26Mo5Cu2 steel sib piv nrog 904L, ntau lub tuam txhab European siv 904L stainless hlau ua cov khoom tseem ceeb rau lawv.cnc ntu, xws li E + H huab hwm coj ntsuas ntsuas raj thiab Rolex saib rooj plaub.
11, 440C stainless hlau.Martensitic stainless hlau, lub siab tshaj plaws hardness nyob rau hauv hardenable stainless hlau, stainless hlau, hardness yog HRC57.Feem ntau yog siv los ua nozzles, bearings, valve spool, rooj zaum, tes tsho, qia thiab lwm yam.
12, 17-4PH stainless hlau yog cais raws li martensitic nag lossis daus-hardened stainless hlau nrog Rockwell hardness ntawm 44. Nws muaj qhov tshwj xeeb lub zog, hardness, thiab corrosion kuj, txawm hais tias nws tsis haum rau kev siv ntawm kub tshaj 300 ° C.Cov hlau no nthuav tawm zoo ua haujlwm rau huab cua, nrog rau cov kua qaub lossis ntsev.Nws cov corrosion kuj yog piv rau 304 stainless hlau thiab 430 stainless hlau.Daim ntawv thov rau cov hlau no suav nrog nws siv hauv kev tsim cov khoom lag luam tawm sab nrauv, turbine blades, valve spools, rooj zaum, tes tsho, valve stems, thiab lwm yam.
Nyob rau hauv lub tshav pob ntawm kev instrumentation, xaiv cov pa austenitic stainless hlau yog txiav txim los ntawm yam xws li versatility thiab nqi.Qhov feem ntau pom zoo ua ntu zus rau kev xaiv stainless hlau yog 304-304L-316-316L-317-321-347-904L.Qhov tseem ceeb, 317 tsis tshua siv, 321 tsis nyiam, 347 yog qhov nyiam rau kev kub siab corrosion, thiab 904L yog cov khoom siv rau cov khoom tshwj xeeb tsim los ntawm qee lub tuam txhab.904L stainless hlau feem ntau tsis yog qhov kev xaiv zoo tshaj plaws hauv kev tsim cov ntawv thov.
Hauv cov cuab yeej tsim thiab xaiv, feem ntau ntsib ntau yam sib txawv, series, qib ntawm stainless hlau, kev xaiv yuav tsum yog raws li cov txheej txheem tshwj xeeb, qhov kub thiab txias, siab, qhov siab, qhov corrosion, nqi thiab lwm yam kev xav.
Anebon nrhiav thiab ua lag luam lub hom phiaj yog "Ib txwm txaus siab rau peb cov neeg siv khoom".Anebon txuas ntxiv tsim thiab tsim thiab tsim cov khoom zoo tshaj plaws rau ob qho tib si peb cov khoom qub thiab cov kev cia siab tshiab thiab paub txog qhov kev cia siab yeej-yeej rau peb cov neeg siv khoom ib yam li peb kho cov khoom siv high-precision extrusion,cnc tig aluminium qhov chawthiabaluminium milling qhov chawrau cov neeg siv khoom.Anebon nrog qhib caj npab, caw txhua tus neeg yuav khoom txaus siab tuaj xyuas peb lub vev xaib lossis tiv tauj peb ncaj qha rau cov ntaub ntawv ntxiv.
Hoobkas Customized Tuam Tshoj CNC Tshuab thiab CNC Engraving Tshuab, Anebon cov khoom yog dav lees paub thiab ntseeg tau los ntawm cov neeg siv khoom thiab tuaj yeem ua tau raws li cov kev xav tau ntawm kev lag luam thiab kev sib raug zoo.Anebon txais tos cov neeg siv khoom tshiab thiab qub los ntawm txhua qhov chaw ntawm lub neej los tiv tauj peb rau kev sib raug zoo ntawm kev lag luam yav tom ntej thiab ua kom muaj kev sib raug zoo!
Post lub sij hawm: Jan-23-2024