Puas yog SS 316 Stainless Hlau raug kev txom nyem los ntawm Intergranular Corrosion?

Stainless hlau 316 (EN 1.4401 / UNS S31600) yog siv dav hauv kev lag luam tshuaj lom neeg, dej hiav txwv, thiab zaub mov ua lag luam vim nws qhov kev tiv thaiv zoo tshaj plaws. Txawm li cas los xij, zoo li lwm yam austenitic stainless hlau, SS 316 tuaj yeem raug kev txom nyem los ntawm intergranular corrosion nyob rau hauv tej yam kev mob.

Kab lus no piav qhia tias vim li cas intergranular corrosion tshwm sim, yuav ua li cas thiaj kuaj tau nws, thiab qhov kev ntsuam xyuas 316 PMI tuaj yeem tiv thaiv cov khoom sib tov-ups. Nws kuj sib piv 316 vs 316L corrosion kuj, qhia txog vuam corrosion txaus ntshai, thiab muab kev taw qhia rau kev yuav khoom thiab kev ruaj ntseg zoo.

 

 

Dab tsi yog Intergranular Corrosion hauv SS 316?

Intergranular corrosion (IGC) yog ib qho kev tawm tsam hauv cheeb tsam raws li cov ciam teb ntawm stainless hlau. Nws feem ntau tshwm sim tom qab siab - qhov kub thiab txias, xws li vuam lossis kev kho cua sov ntawm 450-850 degree, ua rau chromium carbide nag lossis daus.Qhov tshwm sim no cuam tshuam rau 316 stainless hlau lis ciam teb corrosion, txawm tias cov khoom siv loj tseem tsis cuam tshuam.

Vim li cas SS 316 Tej zaum yuav raug mob

Qhov xwm txheej	Cov nyhuv ntawm 316 Stainless Hlau
Vuam	Thaum tshav kub kub- cov cheeb tsam cuam tshuam tuaj yeem ua rau cov chromium carbides precipitate
Cov ntsiab lus carbon	Cov pa roj carbon ntau ua rau muaj kev pheej hmoo siab
Kub	450-850℃raug tuaj yeem ua rau intergranular corrosion
Ib puag ncig	Chloride- cov chaw nplua nuj ua rau muaj kev xeb ntau ntxiv

Cov ntsiab lus tseem ceeb rau cov neeg yuav khoom:Txawm tias siab - zoo SS 316 tuaj yeem raug kev txom nyem los ntawm intergranular corrosion yog tiasKev kho cua sov thiab kev siv vuam tsis raug.

 

316 vs 316L Corrosion Resistance

Khoom	SIB 316	SWB 316L
Cov ntsiab lus carbon	Tsawg dua lossis sib npaug li 0.08%	Tsawg dua lossis sib npaug li 0.03%
Kev raug mob rau IGC	Nruab nrab	Tsawg
Weldability	Zoo, tej zaum yuav xav tau kev tshaj tawm -weld annealing	Zoo heev, tsis muaj kev tshaj tawm -weld annealing xav tau
Tej kev siv	Chemical & marine Cheebtsam	Cov hlab ntsha siab, vuam- tej yaam num tseem ceeb

316L feem ntau pom zoo rau welded Cheebtsam vim nws txo qis vuam corrosion ntawm 316 stainless hlau thiab intergranular nres.

 

Tiv thaiv Intergranular Corrosion hauv SS 316

Kev daws	Kev piav qhia
Siv qis-Carbon 316L	Txo chromium carbide nag lossis daus
Txoj kev siv vuam zoo	Tswj cov cua kub nkag thiab txo lub sijhawm nyob hauv tsawg
Kev daws Annealing	Kev kho cua sov kom yaj cov carbide
Qhia meej ASTM A262 Kev Xeem	Xyuas kom cov khoom ua tau raws li qhov yuav tsum tau muaj kev tiv thaiv corrosion
Kev kuaj PMI	Paub meej cov tshuaj muaj pes tsawg leeg ua ntej kev teeb tsa

 

FAQ

Q1: Puas yog SS 316 stainless hlau corrode yooj yim ntawm cov ciam teb?
Yog lawm, yog tias nws tau rhiab heev los ntawm vuam lossis siab - qhov kub thiab txias.

Q2: Intergranular corrosion kuaj tau nyob rau hauv 316 stainless hlau li cas?
Los ntawm ASTM A262 kev sim, metallography, thiab tshuaj tshuaj ntsuam xyuas nrog rau 316 PMI kuaj.

Q3: Kuv puas yuav tsum xaiv 316 lossis 316L rau kev siv vuam?
Rau welded Cheebtsam, 316L yog qhov nyiam vim yog cov ntsiab lus ntawm cov pa roj carbon tsawg thiab txo qhov kev pheej hmoo corrosion ntawm intergranular.

Q4: Kev kuaj PMI puas tuaj yeem paub qhov txawv ntawm 316 ntawm 316L lossis 304?
Yog lawm. 316 PMI kev sim tuaj yeem paub meej cov ntsiab lus molybdenum thiab txheeb xyuas qhov tseeb qib stainless hlau.