Vim li cas thiaj xaiv Sus316? Corrosion Kuj thiab cov kev ua tau kub siab

Ntawm ntau yam stainless hlau cov ntaub ntawv,Sus316sawv tawm rau nwszoo heev corrosionthiabKev Kub Siab Lub Zog, ua rau nws xaiv qhov tseem ceeb hauv kev lag luam xws li petrochemicals, kev ua zaub mov noj, cov chaw muag tshuaj, thiab marine engineering. Tab sis dab tsi ua rau sus316 yog li tshwj xeeb? Thiab nws yuav piv li cas rau cov feem ntau siv sus304? Cia peb tawg nws.

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Dab tsi yog sus316?

Sus316 yog ib qib kev ua haujlwm ntawm cov qib hlau txhais tau hais los ntawm Japanese Jis txheem. Nws sib haum rau AISI 316 hauv cov qauv thoob ntiaj teb. Nws cov ntsiab lus tseem ceeb suav nrog:

Chromium (CR): 16-18%

Nickel (NI): 10-14%

Molybdenum (MO): 2-3%

Qhov sib ntxiv ntawm molybdenum tseem ua tau kom tsis kam mus rau chloride-inducles corrosion, ua sus316 zoo tshaj rau ib puag ncig.

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Corrosion Kuj Tseem Ceeb ntawm sus316 stainless hlau

1. Txhim Kho Cov Tshuaj Chloride Kuj

Nrog ntau tshaj 2% MO cov ntsiab lus, Sus316 muab cov kev tshwj xeeb tsis kam mus pitting thiab crevice corrosion nyob rau hauv ib puag ncig infietater, ntsev tsuag, thiab chlorides. Hauv kev sib piv, sus304 yog xav ntau dua rau kev xeb hauv cov xwm txheej zoo li no.

2. Kev ruaj khov nyob hauv ib puag ncig tshuaj

Sus316 tuaj yeem tiv taus ntau cov tshuaj acidic, xws li sulfuric acid, thiab organic acid, thiab cov organic acids, ua kom zoo tagnrho rau kev siv cov raj tshuaj piping, tso tsheb hlau luam, thiab reaors.

3. Xav txog cov khoom noj thiab kev kho mob

Nyob rau hauv ib puag ncig huv huv xws li ib puag ncig kev lag luam thiab kev lag luam suprinether, somols thiab tuaj yeem raug rau cov tshuaj tua kab mob thiab cov neeg sawv cev huv.

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Kev ua kub kub ntawm sus316

1. Nruam kev siv txog li 925 degree

Sus316 muaj oxidation zoo ua tsis kam, haum rau kev ua haujlwm txuas ntxiv ntawm qhov kub kom txog 925 degree. Nws tseem tuaj yeem tiv thaiv cov sijhawm luv luv kom muaj qhov kub siab dua.

2. Lub zog ntawm cov chaw kub

Txawm hais tias saum toj 500 degree, sus316 tswj hwm zoo tensile muaj zog thiab txhim khu kev qha nyob rau hauv boilers, kev hloov cua sov, thiab cov tshuab hluav taws xob.

3. Kuj ua rau thermal corrosion thiab qaug zog

Hauv oxidizing thiab sulphur-muaj huab cuas, Sus316 ua qauv qhia tau zoo dua corrosion tsis kam thiab tshuab ruaj khov dua Sus304, tshwj xeeb tshaj yog thaum lub sij hawm ntev.

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Sus316 vs. Sus304: Dab tsi yog qhov sib txawv?

Ntiag tug	Sus304	Sus316
Chloride Corrosion	Tswj kav	Zoo tshaj
Molybdenum cov ntsiab lus	Tsis muaj	2–3%
Pitting resistance	Qi dua	Siab dua
Thaum Tshav Kub Kub Ua	Txog li 870 degree	Txog li 925 degree
Tus nqi	Qi dua	Me ntsis siab dua

Txawm hais tias sus316 yog kim dua li sus304, nws muaj kev ua tau zoo dua hauvkev ua kom huvthiabKev kub-ib puag ncig, ua rau nws cov kev daws teeb meem zoo tshaj lub sijhawm ntev.