Corrosion tsis kam ntawm cov kav hlau kav hlau

Corrosion kuj ntawmductile hlau kav

♦ Cov khoom tiv thaiv corrosion

Cov hlau cam khwb cia muaj cov cuab yeej tiv thaiv corrosion zoo tshaj plaws, raws li cov ntaub ntawv, muaj cov kav hlau cam tau tso ntau tshaj 300 xyoo dhau los tseem siv, thiab suav tsis txheeb pom tias cov kav hlau cam khwb cia muaj ntau tshaj 100 xyoo ntawm kev pab cuam lub neej.Raws li kev siv cov kav hlau kav hlau, keeb kwm yog ntau tshaj 30 xyoo.Tab sis cam khwb cia hlau yog ze li zoo tib yam rau grey cam khwb cia hlau hauv tshuaj muaj pes tsawg leeg.Nws kuj tseem muaj ntau dua silicon, carbon thiab lwm yam khoom dua li cov hlau.Qhov tsis kam ntawm cov hlau cam khwb cia rau corrosion kuj zoo ib yam li cov hlau cam khwb cia grey.Qhov no tau tshwm sim hauv kev siv thiab ua pov thawj empirically.

♦ Kev tiv thaiv corrosion ntawm cov kav dej

Nws yog qhov tseeb tias cov raj xa dej hauv av xaim xaim xaim hluav taws xob thiab cov roj av yuav cuam tshuam zoo heev los ntawm cov khoom siv tshuaj thiab lub cev ntawm cov av ncaj qha.Qhov tseem ceeb tshaj plaws uas ua rau corrosion yog thaum cov kav dej sib koom ua ke ua kom muaj hluav taws xob ntev thiab txuas ntxiv mus.Hauv lwm lo lus, cov av corrosion yuav qhia cov yam ntxwv sib txawv ntawm cov kav dej sib txawv.Raws li qhov sib txawv no, nws tsim cov concentration cell.Ib nrab ntawm tes muaj peev xwm ntawm cov concentration cell yuav muaj zog heev.Yog tias tso cov khoom siv hluav taws xob hauv cov av yuav ua rau cov kab hluav taws xob ntev ntev thiab tom qab ntawd cov anode tam sim no yuav tsim kev xeb heev.Lub welded steel pipeline yog ib qho piv txwv pom tseeb.Cov yeeb nkab hlau, yog tus tswv ntawm nws cov neeg kho tshuab lossis T hom sib koom ua ke thiab kaw los ntawm insulating roj hmab gasket, muaj cov rwb thaiv tsev sib koom ua ke txhua 4-6 meters.

♦ Kev tiv thaiv corrosion los ntawm hluav taws xob tam sim no

Txij li cov hlau nplaum muaj hluav taws xob muaj zog heev, nws muaj kev tiv thaiv corrosion los ntawm hluav taws xob tam sim no.