Metalworking yog ib qho chaw zoo nkauj uas suav nrog kev tsim, tsim khoom, thiab tswj cov khoom siv hlau. Los ntawm cov sculptures intricate mus rau sturdy machinery, hlau ua si ib tug tseem ceeb luag hauj lwm nyob rau hauv ntau yam industries. Txawm li cas los xij, ib qho ntawm cov teeb meem tseem ceeb ntawm kev ua haujlwm hlau yog corrosion, tshwj xeeb tshaj yog corrosion los ntawm cov khoom oxidation. Kab lus no tshawb txog kev sib raug zoo ntawm oxidants thiab hlau thiab teb cov lus nug nram qab no: Cov khoom oxidation puas corrode hlau?
Nkag siab txog Oxidation thiab Corrosion
Oxidation yog ib qho tshuaj tiv thaiv uas tshwm sim thaum cov khoom siv nrog oxygen. Nyob rau hauv cov ntaub ntawv ntawm cov hlau, cov txheej txheem no ua rau corrosion, uas yog maj mam tawg ntawm cov hlau vim muaj tshuaj lom neeg nrog rau nws ib puag ncig. Cov hlau oxidize thaum lawv raug ya raws, huab cua lossis qee yam tshuaj, tsim oxides. Piv txwv li, hlau oxidizes tsim xeb (hlau oxide), uas tuaj yeem ua rau cov hlau tsis muaj zog thaum lub sijhawm.
Corrosion yog ntau tshaj li qhov teeb meem tshuaj pleev ib ce; nws kuj tuaj yeem cuam tshuam qhov kev ncaj ncees ntawm cov khoom hlau. Hauv kev ua haujlwm hlau, kev nkag siab txog yam uas ua rau corrosion yog qhov tseem ceeb rau kev ua kom lub neej ntev thiab ua haujlwm ntev ntawm koj cov khoom hlau.
Kev cuam tshuam ntawm cov khoom oxidation ntawm cov hlau
Cov khoom siv oxidation, xws li cov kua qaub, ntsev, thiab qee yam roj, ua kom cov txheej txheem corrosion. Thaum cov tshuaj no nkag mus rau hauv cov hlau, lawv pib los yog txhim kho cov tshuaj tiv thaiv oxidation. Piv txwv li, hydrochloric acid yog lub zog oxidant uas tuaj yeem ua rau cov hlau sai sai xws li hlau thiab txhuas. Ib yam li ntawd, sodium chloride (xws li ntsev) tuaj yeem tsim qhov chaw corrosive, tshwj xeeb tshaj yog tias nws ntub, ua rau pitting thiab xeb.
Tus nqi ntawm cov khoom oxidation corrode ib hlau nyob ntawm ntau yam, nrog rau hom hlau, qhov concentration ntawm oxidant, kub, thiab muaj cov txheej txheem tiv thaiv. Qee cov hlau, xws li cov hlau tsis muaj steel, muaj kev tiv thaiv corrosion ntau dua vim tias tsim cov txheej txheem oxide passive uas tiv thaiv cov khoom siv hauv qab. Txawm li cas los xij, txawm tias cov hlau tsis muaj hlau tuaj yeem corrode nyob rau hauv cov xwm txheej huab cua lossis nrog lub sijhawm ntev ntawm cov corrosive oxidants.
Tiv thaiv cov khoom siv hlau los ntawm Corrosion
Txhawm rau txo qhov cuam tshuam ntawm cov khoom oxidation ntawm cov hlau, ntau lub tswv yim tuaj yeem ua haujlwm hauv cov khoom hlau. Ib txoj hauv kev zoo tshaj plaws yog siv cov txheej txheem tiv thaiv xws li xim, galvanizing, lossis hmoov txheej. Cov coatings no tsim ib qho kev thaiv ntawm cov hlau thiab ib puag ncig, txo qhov kev pheej hmoo ntawm oxidation.
Tsis tas li ntawd, kev saib xyuas tsis tu ncua thiab kev tshuaj xyuas tuaj yeem pab txheeb xyuas cov cim qhia ntxov ntawm corrosion kom muaj kev cuam tshuam raws sijhawm. Nyob rau hauv ib puag ncig uas cov hlau raug rau cov tshuaj hnyav los yog ya raws, siv cov khoom siv corrosion-resistant los yog siv kev tiv thaiv cathodic tuaj yeem txhim kho cov kav ntev.
Hauv cov ntsiab lus, oxidation cov khoom tuaj yeem noj tam sim ntawm cov hlau, ua rau muaj kev cuam tshuam loj heev thiab kev puas tsuaj. Nkag siab txog cov ntsiab lus ntawm oxidation thiab corrosion yog qhov tseem ceeb rau txhua tus neeg ua haujlwm nrog hlau. Los ntawm kev siv cov kev tiv thaiv thiab xaiv cov ntaub ntawv zoo, cov neeg ua haujlwm hlau tuaj yeem txo qhov cuam tshuam ntawm oxidants thiab xyuas kom lawv lub neej ua haujlwm ntev. Raws li kev siv thev naus laus zis, kev tshawb fawb txuas ntxiv mus rau cov khoom siv tiv thaiv corrosion thiab txheej txheej yuav ua lub luag haujlwm tseem ceeb hauv lub ntiaj teb ua haujlwm hlau, tiv thaiv kev ncaj ncees ntawm cov qauv hlau rau xyoo tom ntej.
Post lub sij hawm: Dec-07-2024
