Galvanic Interaction nrog Deposited Metallic Fine Particles thiab Accelerated Local Pitting ntawm 316L Immersion Heaters

316L stainless hlau immersion rhaub feem ntau yog siv rau hauv cov txheej txheem kev lag luam tso tsheb hlau luam uas cov khoom siv hlau zoo los ntawm cov kav dej ntws los yog cov khoom siv puas tuaj yeem raug ncua hauv cov kua dej. Cov kab hluav taws xob micro-cov khoom no tuaj yeem nyob thiab txuas mus rau lub rhaub dej kub thaum lub sijhawm zoo li qub lossis qis dua - lub sijhawm ntws. Thaum kev sib cuag tau tsim los ntawm cov hlau tsis sib xws, spontaneous galvanic cells tsim. Lub 316L sheath ua raws li thaj tsam anodic nyob rau hauv ntau lub tshuab hlau sib xyaw, tau txais kev txhim kho hauv cheeb tsam corrosion txawm tias qhov kev daws teeb meem feem ntau qhia tau tias muaj qhov tsis zoo.
Lub degradation sequence pib nrog particle sedimentation thiab ncaj qha rau saum npoo. Cov me me conductive fragments adhere nruj nreem rau stainless hlau nto thiab tsim ib tug conductive txoj kev rau electron hloov. Qhov sib txawv ntawm electrochemical muaj peev xwm tsav nruam anodic dissolution ntawm passive zaj duab xis nyob rau hauv qhov chaw tiv tauj. Corrosion khoom sib sau nyob ib ncig ntawm particle ciam teb, ntxiv txwv tsis pub pauv kua thiab tsim ruaj khov crevice ib puag ncig. Raws li passive chromium oxide txheej tawg, discrete tob corrosion pits tsim thiab nkag mus maj mam los ntawm lub raj phab ntsa.
Hom kev ua tsis tiav no feem ntau khiav tawm cov kev kuaj xyuas tus qauv. Cov khoom siv xoob xoob tuaj yeem raug ntxuav tawm thaum lub tank tso dej, tsuas yog cov faint indentations uas nyuaj rau taug qab rov qab rau kev ua haujlwm galvanic. Kev kuaj cov kua dej niaj hnub tsis tuaj yeem ntes cov kab mob sib kis ib ntus. Ntau dhau los ntawm - cov xwm txheej ntawm phab ntsa tsis raug cais raws li kev siv tshuaj lom neeg corrosion es tsis yog kev sib txuas ntawm cov galvanic uas tshwm sim los ntawm cov hlau raug tshem tawm.
Ntau qhov kev ntsuas engineering tuaj yeem txo qhov kev pheej hmoo no. Txhim kho cov dej kom tsim nyog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhaws. Txhim kho cov qauv sib xyaw kom zoo kom tsis txhob muaj cov khoom me me ntawm cov khoom siv cua sov. Siv lub sij hawm alkaline ntxuav kom tshem tawm cov khoom siv hluav taws xob. Ua raws li niaj zaus ultrasonic phab ntsa thickness ntsuas ntawm ib txwm sediment zones kom pom cov khoom poob thaum ntxov.
Heater Hom Galvanic Pitting Risk los ntawm Metallic Fines Core Degradation Mechanism Thaum Ntxov -theem Diagnostic Feature Key Mitigation Engineering Measure
316L Stainless Steel High Adhered conductive hlau particles tsim galvanic khub niam txiv, rhuav tshem cov zaj duab xis passive thiab tsim cov pits sib sib zog nqus me me decoloration ntawm cov ntsiab lus sib cuag; gradual phab ntsa thinning nyob rau hauv deposits Upstream filtration + optimized flow mixing + periodic thickness tshuaj xyuas
Titanium Medium Titanium's noble passive zaj duab xis thim rov qab galvanic polarity hauv qee qhov sib xyaw; Txwv tsis pub muaj kev pheej hmoo tshwj tsis yog tias muaj cov kab mob hnyav hlau txuas ntxiv Kev rho tawm cov qhab nia qis tom qab tshem tawm cov khoom seem Tsis tu ncua ntxuav thiab tswj cov kab mob hlau
Fused Quartz Negligible Non-cov khoom siv hluav taws xob tsis tuaj yeem txhawb nqa galvanic electron hloov mus; tsuas yog lub cev nto fouling tshwm sim Loose tshem tau particle deposits ntawm pob tshab nto Routine tank tu
PFA-Jacketed Negligible Insulating polymer barrier tiv thaiv kev sib cuag ntawm cov hlau ncaj qha thiab cov tshuaj tiv thaiv galvanic Cov khoom so xoob ntawm lub tsho saum npoo yam tsis muaj substrate corrosion Standard nto yaug voj voog
Txhawm rau txiav txim siab, tshem tawm cov khoom siv hlau tsis zoo qhia txog kev pheej hmoo zais galvanic pitting rau 316L immersion heaters. Cov kua dej huv huv tsis tuaj yeem lav kev ywj pheej los ntawm kev tawm tsam galvanic. Kev tswj cov kab mob sib kis tau zoo thiab kev ua kom zoo txaus yog qhov tseem ceeb ntev - cov tswv yim tiv thaiv lub sijhawm.