Dab tsi yog cov hom corrosion ntawm carbon hlau welded kav?
Suav nrog tshuab hluav taws xob (galvanic ntawm cov av (SRC, cov kab mob sib txuas) thiab cov kab mob hauv zos) roj thiab roj {{{.} tus nqi ntawm cov kav dej uas faus tau li {} Cov hlau tsis muaj zog nyob hauv 3 xyoos hauv kev lag luam huab cua {}}
Kev sib piv ntawm cov kev cuam tshuam tiv thaiv corrosion ntawm kub-dip galvanizing thiab electro-galvanizing?
Qhov kub-dip Galvanizing txheej yog tuab (50-150 μm) thiab muaj lub neej pabcuam ntawm {xyoo, tab sis saum npoo yog ntxhib thiab muaj zinc nodules; Lub electro-galvanizing txheej yog nyias ({4} {}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Lub electro-galvanized ntshiab zinc txheej yog yooj yim dua}}}}}}}}}}}}}}}}} ib puag ncig tus phooj ywg electro-galvanizing (chromium-free passiveation) tuaj yeem siv rau sab hauv tsev cov kav dej zoo nkauj.
Yuav ua li cas cathodically tiv thaiv welded kav?
Cathodic kev tiv thaiv tau muab faib ua kev txig anode txoj kev (rectated khoom) thiab yuam kev muaj peev xwm siv cov khoom siv tam sim no (17kg / 100m pipeline) {} Aluminium Alloy Anodes yuav tsum rau Offshore lub platform, thiab kev tiv thaiv tam sim no tau raug txiav txim siab thaum lub sijhawm tsim (qhov zoo tshaj plaws yog<50Ω·m), and IR drop compensation technology must be used. The monitoring system needs to regularly measure the pipe-to-ground potential to ensure that the protection efficiency is >90%.
Dab tsi yog kev tawm tsam corrosion corrosion rau welded kav hauv av marine ib puag ncig?
"Peb txheej ntawm kev tiv thaiv" yuav tsum rau cov tub rog ib puag ncig: ① Epoxy Hmoov Primer (ntau dua lossis sib npaug rau 80μm); ② Polyolefin nplaum daim kab xev (nruab nrab txheej); ③ Polyethylene lub tsho (ntau dua los yog sib npaug rau 2.} Nws tau pom zoo kom npog cov kav dej tob (220) lossis cov hlau roj av Siv . cov tshuaj tiv thaiv Cathodic tau tsim tshwj xeeb, ib zaug rhawv kev kuaj xyuas (hauv qab dej tsis tu ncua.
Xaiv thiab kev tsim kho txoj kev ntawm welded yeeb nkab saum npoo hlau?
Cov txheej txheej sib xyaw suav nrog Epoxy thee (pheej yig, tab sis tsuas yog {{{}}}}}} (GB 8923 txuj ci) thiab roughness {{940-80 μm yuav tsum ua ntej tsim. txheej txheem plua plav (epoxy xim ntau dua los yog sib npaug rau 300μm); ② Cov Txheej Txheej (3PE, 190 Degree Kub Fusion); ③ UV Kho (FlatSensitive txheej, haum rau me me uas hla (15kv ntsuas tshuaj xyuas (15kv hluav taws xob (15kv hluav taws xob (
