Cov ntawv hlau tsis xeb muaj qhov chaw du, muaj zog yas, tawv, thiab lub zog kho tshuab, thiab tiv taus kev xeb los ntawm cov pa roj acidic thiab alkaline, cov tshuaj, thiab lwm yam xov xwm. Nws yog cov hlau sib xyaw uas tsis yooj yim xeb, tab sis nws tsis yog xeb kiag li. Cov ntawv hlau tsis xeb yog hais txog cov ntawv hlau uas tiv taus kev xeb los ntawm cov xov xwm tsis muaj zog xws li huab cua, pa dej, thiab dej, thaum cov ntawv hlau uas tiv taus kua qaub yog hais txog cov ntawv hlau uas tiv taus kev xeb los ntawm cov xov xwm tshuaj lom neeg xws li kua qaub, alkalis, thiab ntsev.
Cov ntawv hlau tsis xeb muaj ntau qib, nrog rau cov koob tseem ceeb tshaj plaws hauv kev lag luam suav nrog austenitic, ferritic, duplex, thiab martensitic. Txhua qib muaj cov khoom siv kho tshuab tshwj xeeb thiab kev tiv thaiv corrosion, ua rau nws tsim nyog rau cov ntawv thov tshwj xeeb.
Cov Hlau Stainless Austenitic (300 Series)
304/304L: Cov hlau tsis xeb siv dav dav. Nws muaj kev tiv taus xeb zoo, ua kom zoo nkauj, thiab vuam tau zoo.
316/316L: Nrog rau kev ntxiv ntawm 2-3% molybdenum, nws muaj kev tiv thaiv zoo heev rau chlorides (dej hiav txwv, ntsev de-icing).
321: Nrog rau kev ntxiv cov titanium stabilizers, nws tiv thaiv kev ua kom tsis txhob muaj kev cuam tshuam thaum lub sijhawm vuam.
310S: Qib kub siab (txog li 1100 ° C), tsim nyog rau cov khoom siv hauv qhov cub.
Ferritic Stainless Steel (400 series, piv txwv li, 430, 409, 439) Ferritic stainless steel sheets muaj 10.5% –27% chromium, cov pa roj carbon tsawg heev (<0.1%), thiab me ntsis lossis tsis muaj nickel. Lawv yog magnetic thiab muaj kev tiv thaiv zoo rau kev ntxhov siab corrosion cracking, tab sis lawv cov formability thiab toughness qis dua austenitic stainless steel. Lawv tsis tuaj yeem ua kom muaj zog los ntawm kev kho cua sov. Cov ntawv thov ib txwm muaj: cov tshuab tso pa tawm hauv tsheb, cov vaj huam sib luag tsev, thiab cov khoom siv hluav taws xob sab hauv. Hauv cov chaw tsis muaj zog, qib 430 yog lwm txoj hauv kev pheej yig rau qib 304.
Duplex Stainless Steel (piv txwv li, 2205, 2507) Duplex stainless steel muaj ib qho microstructure uas muaj cov khoom sib xyaw ntawm austenitic thiab ferritic (kwv yees li 50/50). Vim nws cov ntsiab lus chromium siab (21-26%), cov ntsiab lus nickel nruab nrab (4-7%), thiab cov ntsiab lus molybdenum (0-4%), 2205 stainless steel muaj lub zog tso zis kwv yees li ob npaug ntawm austenitic stainless steel, thaum tswj hwm kev tiv thaiv zoo heev rau chloride kev ntxhov siab corrosion cracking. 2205 stainless steel yog siv dav hauv cov tshuaj tankers, seawater desalination, thiab pulp digesters. Nws lub zog siab dua tso cai rau kev siv cov ntawv nyias dua, yog li txo qhov hnyav thiab tus nqi.
Cov hlau tsis xeb Martensitic (piv txwv li, 410, 420) muaj 11-17% chromium thiab cov pa roj carbon ntau dua (0.1-1.2%), yog li tso cai rau kev ua kom tawv los ntawm kev kho cua sov. Lawv yog hlau nplaum, muaj zog, thiab hnav-resistant, tab sis lawv qhov kev tiv thaiv corrosion qis dua li ntawm austenitic lossis duplex stainless hlau.
Qhov txawv tseem ceeb ntawm 304 thiab 316 stainless hlau phaj: 304 stainless hlau, uas peb ntsib feem ntau txhua hnub, yog tus qauv rau cov hlau stainless hlau qib zaub mov thiab tseem yog tus huab tais ntawm kev siv nyiaj tsim nyog hauv kev siv hauv tsev. Nws muaj kev tiv thaiv xeb zoo heev, tiv thaiv xeb, thiab tiv taus kub siab. Rau cov khob rwb thaiv tsev, cov khoom siv rooj tog, cov dab dej hauv chav ua noj, cov khoom siv ua zaub mov, thiab cov khoom siv hauv chav dej, 304 yog qhov kev xaiv zoo tshaj plaws. Nws muaj kev nyab xeeb, tsis muaj tshuaj lom, thiab tiv taus xeb rau kev siv txhua hnub, haum rau feem ntau cov xwm txheej hauv tsev, thiab muaj kev ruaj khov zoo heev.
316 stainless hlau, ntawm qhov tod tes, yog cov khoom siv kho mob / qib siab tshaj plaws hauv kev lag luam. Nws ntxiv molybdenum rau 304, txhim kho nws txoj kev tiv thaiv corrosion, acid thiab alkali tiv thaiv, thiab ua rau nws tiv taus kub siab thiab dej hiav txwv corrosion. Nws siv dav hauv cov khoom siv hauv chav ua noj zoo, cov khoom siv kho mob, cov kav dej tshuaj, thiab cov chaw sab nraum zoov ntug dej hiav txwv. Txawm hais tias tsis tseem ceeb rau kev siv hauv tsev txhua hnub, 316 yog qhov kev daws teeb meem zoo tshaj plaws rau cov ntawv thov uas xav tau kev tiv thaiv corrosion siab.
Lwm qhov txawv tseem ceeb yog tus nqi; vim nws muaj cov nickel thiab molybdenum ntau dua, 316 stainless hlau feem ntau kim dua 304 stainless hlau. Yog li ntawd, kev xaiv ntawm ob lub hlau no feem ntau nyob ntawm cov kev xav tau ntawm daim ntawv thov tshwj xeeb, suav nrog kev txwv nyiaj txiag thiab cov yam ntxwv ib puag ncig.
Cov hlau tsis xeb yog cov khoom siv engineering uas siv tau ntau yam, tshwj xeeb tshaj yog qib 304 thiab 316, uas ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam vim lawv cov yam ntxwv thiab kev siv tshwj xeeb. Txawm hais tias nyob rau hauv kev ua zaub mov, kev tsim kho, tsheb, kev kho mob, tshuaj lom neeg, lossis kev lag luam zog, cov ntawv hlau tsis xeb yeej ib txwm yog qhov kev xaiv zoo rau cov engineers thiab cov chaw tsim khoom. Raws li kev lag luam txuas ntxiv mus thiab qhov kev thov rau cov khoom siv ruaj khov, tiv taus corrosion txuas ntxiv mus, qhov tseem ceeb ntawm cov ntawv hlau tsis xeb tsuas yog yuav nce ntxiv.
Yog tias koj xav tau cov khoom siv hlau tsis xeb, thov nias kom tiv tauj peb kom tau kev sab laj. Jindalai Steel Group Co., Ltd. yuav muab cov lus teb tshaj lij tshaj plaws rau koj.
Lub sijhawm tshaj tawm: Tsib Hlis-11-2026
