Standard thiab specification rau ntsev tsuag tshuaj ntsuam ntawm hluav taws xob cua sov raj
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Standard thiab specification rau ntsev tsuag tshuaj ntsuam ntawm hluav taws xob cua sov raj
1. Lub thiaj li hu ua corrosion ntawm ntsev pos huab
Corrosion yog kev puas tsuaj lossis kev puas tsuaj los ntawm kev ua ntawm ib puag ncig ntawm cov khoom lossis nws cov khoom. Feem ntau corrosion tshwm sim nyob rau hauv atmospheric ib puag ncig, uas muaj corrosive Cheebtsam thiab yam xws li oxygen, av noo, kub hloov, thiab pa phem. Ntsev tshuaj tsuag corrosion yog ib qho tshwm sim thiab feem ntau puas atmospheric corrosion. Cov ntsev pos nphuab hais ntawm no yog hais txog cov huab cua ntawm cov tshuaj chloride, thiab nws lub ntsiab corrosive tivthaiv yog chloride ntsev nyob rau hauv dej hiav txwv - sodium chloride, uas feem ntau yog los ntawm dej hiav txwv thiab saline alkali cheeb tsam nyob rau hauv lub mainland.
Kev xeb ntawm cov ntaub ntawv hlau los ntawm cov tshuaj tsuag ntsev yog tshwm sim los ntawm cov tshuaj tiv thaiv electrochemical ntawm cov chloride ions uas nkag mus rau oxide txheej thiab tiv thaiv txheej ntawm cov hlau nto thiab cov hlau sab hauv. Nyob rau tib lub sijhawm, chloride ions muaj qee qhov dej ntawm lub zog, uas yooj yim adsorbed ntawm lub qhov hws thiab cov kab nrib pleb ntawm cov hlau kom thawb tawm thiab hloov cov pa oxygen hauv txheej chloride, hloov cov oxide insoluble rau hauv cov chlorides soluble, thiab tig qhov chaw passive. nyob rau hauv lub active nto. Ua rau muaj kev cuam tshuam tsis zoo rau cov khoom.
2. Kev kuaj ntsev ntsev thiab nws txoj kev sib txuas nrog kev xyaum
Cov tshuaj tsuag ntsev yog ib qho kev ntsuam xyuas ib puag ncig uas feem ntau siv cov khoom siv simulated ntsev tsuag ib puag ncig tsim los ntawm cov khoom siv tshuaj tua ntsev los ntsuas qhov kev tiv thaiv corrosion ntawm cov khoom lossis cov khoom siv hlau. Nws tau muab faib ua ob pawg, ib qho yog kev sim tshuaj tiv thaiv ib puag ncig, thiab lwm yam yog kev simulated ntsev ntsev ib puag ncig kev sim. Artificial simulated ntsev tsuag ib puag ncig kuaj yog siv cov cuab yeej kuaj nrog ib qho chaw ntim - lub tshuab ntsev tsuag tshuaj ntsuam chamber. Nyob rau hauv nws qhov chaw ntim, cov txuj ci dag siv los tsim cov ntsev tsuag ib puag ncig los ntsuas qhov zoo ntawm cov khoom siv ntsev tsuag tshuaj tiv thaiv kev ua haujlwm.
Piv nrog rau tej yam ntuj tso, cov ntsev concentration ntawm chloride nyob rau hauv nws cov ntsev tsuag ib puag ncig yuav ua tau ob peb zaug los yog kaum ob lub sij hawm ntawm tej yam ntuj tso ib puag ncig, zoo heev txhim kho tus nqi corrosion. Kev ntsuas ntsev tsuag ntawm cov khoom kuj tseem ua rau lub sijhawm kom tau txais txiaj ntsig zoo. Yog tias cov qauv khoom raug kuaj nyob rau hauv ib puag ncig raug, nws yuav siv sij hawm ib xyoos rau kev xeb tshwm sim, thaum nyob rau hauv kev simulated ntsev tsuag ib puag ncig, cov txiaj ntsig zoo sib xws tuaj yeem tau txais hauv 24 teev.
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