Corrosion tsis ua hauj lwm yog ib qho ntawm peb hom kev ua tsis tau zoo ntawm ib qho -kawg cua sov raj hauv kev lag luam daim ntawv thov scenarios, thiab qhov teeb meem tshwj xeeb tshaj yog nyob rau hauv kev lag luam chemical, electroplating processing, marine equipment matching and food deep processing industries. Cov chaw ua haujlwm hnyav xws li cov av noo siab, siab ntsev concentration, acid thiab alkali nruab nrab yaig yuav ua rau cov tshuaj tiv thaiv tsis tu ncua kev puas tsuaj thiab electrochemical corrosion rau cov hlau plhaub ntawm cov cua sov raj. Muaj ntau lub tshuab cua sov ib leeg nrog rau kev tsim nyog pib lub Hoobkas ua haujlwm ua tsis tiav thaum ntxov ntawm lub voj voog kev pabcuam vim tias tsis muaj kev tiv thaiv kev tiv thaiv -corrosion configuration thiab tsis raug qhov sib txuam, ua rau cov khoom siv loj kaw thiab rov ua dua tom qab - muag khoom muag teeb meem. Kev tiv thaiv kev tiv thaiv- kev xaiv cov khoom siv corrosion thiab cov phiaj xwm kev teeb tsa yog qhov tseem ceeb lav rau ib qho -kawg cua sov raj kom ua haujlwm ntev - lub sij hawm hnyav kev lag luam xwm txheej ruaj khov.
Ntau qhov chaw muaj corrosive ib puag ncig sib haum rau ntau hom kev xeb thiab cov txheej txheem kev puas tsuaj, xav tau kev tiv thaiv kev tiv thaiv - qauv tsim. High -cov av noo ntawm ntug dej hiav txwv rhiav ib puag ncig thiab dej ntsev cua sov qhov xwm txheej uas muaj cov tshuaj chloride ions feem ntau ua rau qhov tsis zoo ntawm pitting corrosion. Qhov zoo ntawm corrosion no muaj zog zais thiab kev puas tsuaj, tsim me me tsis pom corrosion pits ntawm lub raj nto, maj mam nkag mus rau lub raj phab ntsa thickness, thiab thaum kawg ua rau lub cev perforation, nruab nrab to thiab cua sov tsis ua hauj lwm. Cov kua qaub tsis muaj zog thiab tsis muaj zog alkali ua haujlwm ib puag ncig uas sawv cev los ntawm cov tshuaj electroplating thiab tshuaj ntxuav cov tshuaj ua rau cov tshuaj tiv thaiv zoo sib xws, ua rau cov phab ntsa ntawm lub raj txuas txuas ntxiv, txo cov txheej txheem lub zog thiab ua kom lub neej ua haujlwm luv.
Ordinary 304 stainless hlau ib leeg-kawg cua sov raj tsuas tuaj yeem hloov kho kom haum rau qhov chaw nyob sab hauv tsev thiab qis-corrosion ib txwm ua haujlwm. Ntev- lub sijhawm ua haujlwm tas mus li hauv qhov hnyav corrosive scenarios yuav sai sai nqus cov txheej tiv thaiv ntawm 304 stainless hlau thiab poob los tiv thaiv- kev ua haujlwm corrosion. Hloov kho 316L stainless hlau yog qhov siv dav tshaj plaws thiab tus nqi - siv tau los tiv thaiv- cov khoom siv corrosion hauv kev lag luam, nrog cov tshuaj chloride ion zoo heev thiab kev ruaj ntseg tshuaj, zoo tiv thaiv dej ntsev yaig thiab tsis muaj zog acid{11}} puag nruab nrab corrosion. Rau qhov muaj zog corrosive ib puag ncig xws li cov kua qaub muaj zog, muaj zog alkali thiab siab -cov tshuaj lom neeg cov ntsiab lus, tshwj xeeb PTFE coated ib leeg -kawg cua sov raj thiab siab -kev ua tau zoo titanium alloy cua sov raj tuaj yeem muab siab dua - theem ntev - lub sij hawm tiv thaiv {{18}.
Kev tshawb fawb lub zog ntom ntom sib txuam koom tes nrog qib siab - xaiv cov khoom siv kom ua tiav cov txiaj ntsig zoo los tiv thaiv- kev ua haujlwm corrosion. Lub zog siab ntau dhau yuav ua rau ultra- qhov kub thiab txias ntawm lub raj lub cev, uas ua rau cov tshuaj tiv thaiv corrosion ntawm cov hlau plhaub thiab cov xov xwm corrosive sab nraud. Txawm tias qib siab -qib los tiv thaiv- cov khoom siv corrosion yuav ua rau muaj kev laus zuj zus ntxiv thiab kev puas tsuaj ntawm cov khoom raws li qhov sib txuas ntawm qhov kub thiab txias. Therefore, all corrosive working conditions must adopt low-power density optimized configuration to reduce tube surface operating temperature, fundamentally slow down the corrosion reaction rate and maximize the service life of anti-corrosion heating tubes.
Kev txheeb xyuas qhov tseeb ntawm cov yam ntxwv ntawm ib puag ncig corrosion, cov yam ntxwv nruab nrab thiab kev ua haujlwm kub, nrog rau kev xaiv cov khoom siv thiab qhov ntsuas qhov sib txuam, ua lub hauv paus ntawm kev tshaj lij los tiv thaiv-corrosion configuration. Kev tshaj lij kev tiv thaiv kev tiv thaiv -corrosion ib leeg- kawg cua sov raj schemes tuaj yeem tiv thaiv kev puas tsuaj hauv ntau qhov chaw ua haujlwm hnyav, ua kom ntev tiv thaiv kev pab cuam lub neej, ua kom muaj cua sov tsis tu ncua ntawm cov cuab yeej siv, thiab txo cov khoom lag luam tu thiab hloov cov nqi hauv corrosive ua haujlwm scenarios.
