Xaiv cov khoom tsim nyog rau qhov chaw ua haujlwm yog qhov tseem ceeb hauv kev lag luam uas ua haujlwm ntev, kev nyiam huv, thiab kev ua haujlwm ntev - lub sijhawm ua haujlwm tseem ceeb. Stainless hlau tau ntev yog qhov kev xaiv sab saum toj ua tsaug rau nws cov kev tiv thaiv corrosion thiab lub zog ntawm cov qauv, tab sis tsis yog txhua qib stainless muaj tib lub peev xwm. Thaum 304 stainless hlau feem ntau siv rau hauv txhua yam los ntawm cov khoom siv hauv chav ua noj rau cov khoom siv tsheb, qee qhov chaw xav tau kev tiv thaiv corrosion zoo dua - qhov no yog qhov316 stainless hlau ua qhov kev xaiv uas nyiam.
Yuav Ua Li Cas Stainless Hlau Ua
Stainless hlau yog cov hlau alloy uas tsim los ntawm hlau, carbon, thiab chromium, nrog rau kev xaiv ntxiv ntawm nickel, molybdenum, nitrogen, thiab manganese. Kev tsim khoom pib nrog steel- sib xyaw ua ke ntawm hlau thiab tswj cov ntsiab lus ntawm cov pa roj carbon monoxide- txhawm rau txhim kho hardness thiab mechanical zog. Txawm hais tias muaj zog dua li cov hlau ntshiab, steel oxidizes yooj yim thaum raug huab cua thiab ya raws.
Txhawm rau daws qhov no, chromium ntxiv. Thaum chromium reacts nrog oxygen, nws tsim ib tug nyias, tiv thaiv chromium oxide zaj duab xis, muab stainless hlau nws nto moo corrosion kuj. Cov txheej txheem passive no yog nws tus kheej- kho kom ntev npaum li cov pa oxygen tam sim no, ua rau cov hlau tsis muaj kev ntseeg siab hauv qhov chaw hnyav thiab qhov kub thiab txias.
Cov khoom tseem ceeb ntawm Stainless Hlau
Stainless hlau muaj ntau yam zoo uas ua rau nws xaiv cov khoom tseem ceeb hauv kev lag luam:
- Corrosion Resistance: Cov chromium oxide barrier tiv thaiv saum npoo thiab rov tsim dua yog khawb.
- Thaum tshav kub kub Resistance: Stainless hlau tswj kev ruaj ntseg ntawm qhov kub thiab txias thiab muaj ib tug melting point ntawm 1,400-1,530℃(2,550-2,790℃F).
- Lub zog muaj zog: Alloy muaj pes tsawg leeg thiab kev ua haujlwm txias muab kev ua haujlwm zoo heev rau kev thov.
- Cleanability: Nws du, nonporous nto yog yooj yim rau sanitize, zoo tagnrho rau kev kho mob thiab zaub mov ib puag ncig.
- Aesthetic Appeal: Stainless hlau muab ib tug huv si, niaj hnub tsos haum rau pom kev teeb tsa.
Tsev neeg thiab Qib Stainless Hlau
Stainless hlau tau muab faib ua plaub tsev neeg tseem ceeb -ferritic, martensitic, austenitic, thiab duplex-txhua tus muab cov yam ntxwv thiab cov yam ntxwv sib txawv. Ntau tshaj 60 qib muaj nyob, tab sis feem ntau suav nrog:
- 300 Series (Austenitic)
High nyob rau hauv nickel thiab chromium, muab muaj zog corrosion kuj thiab zoo heev formability.
Cov qib siv dav tshaj plaws: 304 thiab 316.
- 400 Series (Martensitic)
Muaj cov pa roj carbon ntau dua, muab lub zog ntau dua thiab cov hlau nplaum nruab nrab, tab sis qis dua corrosion kuj piv rau 300 Series.
Piv txwv li: 430 stainless hlau.
- Lwm Qib
200 Series: Tus nqi qis dua rau 300 Series, tab sis nrog kev txo qis corrosion.
Duplex 2205: Kev sib xyaw ntawm austenitic thiab ferritic zog, muab lub zog siab thiab ua haujlwm zoo rau kev ntxhov siab corrosion tawg.
304 vs . 316 Stainless hlau: Qhov txawv tseem ceeb
Ob leeg 304 thiab 316 belongs rau 300 Series thiab paub txog kev zoo heev corrosion kuj, lub zog, thiab weldability. Txawm li cas los xij, lawv cov tshuaj lom neeg sib txawv:
1.304 Stainless Hlau (18/8 Hlau)
~ 18% chromium
~ 8% npib tsib xee
Txhim khu kev tiv thaiv corrosion rau feem ntau daim ntaub ntawv
Siv dav hauv kev lag luam thiab cov khoom siv hauv tsev
2.316 Stainless hlau
16-18% chromium
10-14% npib tsib xee
2-3% molybdenum (qhov sib txawv tseem ceeb)
Qhov tseem ceeb zoo chloride thiab tshuaj tiv thaiv
Superior pitting thiab crevice corrosion kuj
Ua tau zoo dua ntawm qhov kub siab
Qhov sib ntxiv ntawm molybdenum ua rau 316 mus- rau cov khoom siv rau qhov hnyav lossis corrosive ib puag ncig.
Vim li cas 316 Stainless Hlau Ua tau zoo dua 304
Thaum ob qho tib si alloys ua tau zoo, 316 stainless hlau muaj qhov zoo sib xws:
1. Kev tiv thaiv zoo tshaj rau cov tshuaj hnyav hnyav
316 withstands raug rau:
- Chlorides
- Muaj kuab tshuaj
- Sulfuric thiab fatty acids
- Cov tshuaj bleach thiab txhoj puab heev ntxuav
Qhov no yog vim li cas nws feem ntau siv hauv chav huv, chav kuaj, thiab chaw tshuaj.
2. Txhim khu kev tiv thaiv hauv Marine ib puag ncig
Vim tias nws cov tshuaj chloride txhim kho, 316 feem ntau hu ua marine- qib stainless hlau thiab siv hauv:
- Cov qauv ntug hiav txwv
- Cov khoom siv marine
- Cov cheeb tsam uas muaj ntsev ntau
3. Ntev ntev dua -Lub Sij Hawm Ntev
Ntau dua kev tiv thaiv corrosion txo:
- Cov cuab yeej degradation
- Nto pitting
- Hloov zaus
Qhov no txo qis tag nrho cov nqi ntawm cov tswv cuab lub sijhawm.
Xav txog Tus Nqi Tag Nrho Cov Tswv Cuab
Txawm hais tias 316 stainless hlau yog kim dua 304 pem hauv ntej, nws lub neej kev pab cuam txuas ntxiv txo qhov ntev - tu thiab hloov cov nqi. Thaum ntsuas qib twg los siv, xav txog:
- Cov tshuaj muaj nyob hauv koj ib puag ncig
- Cov txheej txheem ntxuav thiab tshuaj tua kab mob
- Cia siab tias yuav raug chlorides
- Yuav tsum tau lifespan ntawm cov khoom siv
Hauv kev xav tau ib puag ncig, qhov ntev - txuag lub sij hawm ntawm 316 feem ntau tshaj qhov pib nqis peev ntau dua.
Xaus: Vim li cas Xaiv 316 Stainless Hlau
316 stainless hlau sawv tawm rau nws qhov tshwj xeeb corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig raug tshuaj lom neeg, ntsev, thiab nquag tu. Thaum 304 stainless hlau tseem yog qhov kev xaiv nrov thiab kev lag luam, 316 muaj qhov tsis sib haum xeeb rau kev lag luam uas xav tau kev ua haujlwm siab hauv cov xwm txheej hnyav.
Yog tias koj qhov phiaj xwm cuam tshuam txog kev raug dej hiav txwv, kev ua kom nruj heev, lossis kev ua tshuaj lom neeg, 316 stainless hlau muab kev tiv thaiv zoo dua thiab ntev - tus nqi.
Ntawm Gnee Steel, peb muab qib siab - qib stainless hlau zoo- suav nrog 304 thiab 316-tsim rau kev lag luam, kev lag luam, thiab kev siv tshwj xeeb.
📩 Tiv tauj peb hnub no rau cov lus hais, cov qauv, lossis kev sib tham: ru@gneesteelgroup.com