Anti-corrosion epoxy powder coating e bapala mosebetsi oa tšireletso

Tšebeliso e kopanetsoeng ea tšireletso ea cathodic le lera la tšireletso ea kutu, e lumella sebopeho sa tšepe se ka tlas'a lefatše kapa ka tlas'a metsi ho fumana tšireletso e ngata ka ho fetisisa ea moruo le e sebetsang. Hangata e koahetsoeng ka tšireletso e sireletsang pele e sebelisoa, ho ea sebakeng sa tšepe le dielectric ho itšehla thajana ha motlakase oa motlakase, ho roala hantle ho ka sireletsa ho feta 99% ea mehaho ea bokantle ba ka ntle ho senya. The phala barbotage ka tlhahiso, lipalangoang le kaho, ke ke ka ho feletseng tiisetso khahlanong le tšenyo leha e le efe ho (tlatsa molomo barbotage, segokanyipalo sa barbotage, pinhole barbotage, joalo-joalo), ho ke ke ha khoneha ho lipeipi kutu tikoloho ka ho feletseng itšehla thajana. Empa hape bakeng sa anti-corrosion insulation layer ea lisebelisoa tse fapaneng, ka likhato tse fapaneng, tse monyang le tse phefumolohang, 'me butle-butle li tla patoa. Ho boloka anti-corrosion e sebetsang hantle, hoa hlokahala ho nka tšireletso ea cathodic e leng, tšireletso e kopanetsoeng. Liaparo tse teteaneng (botenya> 1mm), tšireletso e kopanetsoeng ea liphaephe e lokela ho khethoa bokhoni ba tšireletso ea -1.10 ho-1.15V (CSE), lesela le tšesaane (botenya ≤ 1mm) nka matla a tšireletso a -1.05 ho-1.10V (CSE), Ho ela hloko sebopeho sa mobu, mongobo, mocheso, mefuta ea ho roala, boleng ba ho roala, hammoho le likokoana-hloko, liphetoho tse nepahetseng ho bokhoni ba tšireletso, ka bobeli ho sireletsa liphaephe ntle le ho senya lesela le thibelang kutu. Ho bola ha tikoloho ea tlhahlobo ea polarization ho sebetsa haholoanyane. "Tšireletso" ke khopolo ea bohlokoa mona, e leng epoxy e khahlanong le kutu ho apara ka phofo sebakeng, “tšireletso”?

Ho tlosoa ha cathode e koahetsoeng, liphello tse senyang, peipi ea tšepe e patiloeng ka ho fetisisa ho tsamaisa tšireletso e ntle ka ho fetisisa e khethiloeng ea tšireletso ea cathodic (3PE coating, motsoako o ka tlase o kopantsoeng le epoxy powder) mabaka a lokelang ho hlahlojoa. Mabapi le ts'ireletso e ntle ka ho fetisisa. Mokokotlo o teng hona joale ho litsebi tsa kantle ho naha li ithuta maemo a ts'ireletso ea corrosion le cathodic, matla a karabelo ea hydrogen desorption ea-1.15V. Ho ea ka lipatlisiso tsa Malaysia, Register ea Lloyd, Shell e fana ka ts'ireletso e phahameng ka ho fetisisa ea-1.1V limit take-1.15V; Tekanyetso ea Sejeremane DIN30676-19853.1 e baleha tjena: ka seaparo se tšesaane (<1mm) se teteaneng se ne se sebelisetsoa ts'ireletso ea corrosion nyeoe, ka lebaka la polarization e tla ba le tšusumetso e fapaneng joalo ka li-blister tse entsoeng, e le ho fokotsa tšusumetso, li lokela ho fokotsa bophara ba matla a tšireletso e le mosebetsi oa ho roala, joalo ka matla a phahameng a tšireletso a -1.00 ~~-1.20V (CSE e amanang le eona) . Linaheng tse ling, ho boletse ka ho khetheha sesosa sa ho hloleha ha ho roala ka mabaka a 'maloa, ho kenyelletsa le sebopeho sa mobu, mongobo, mocheso, mefuta ea ho roala, boleng ba ho roala le likokoana-hloko, mofuta oa indasteri.rale nkoa e le ho qoba ho khaoha ha motlakase ho ka bang teng -1.05 ~ - 1.10V (CSE) (Hlokomela: ts'ebeliso e atileng ea fusion bonded epoxy powder coating). Ho roala ka pele ho tšireletso ea cathodic (3PE e roala ka tlase ho mochini oa fusion bonded epoxy powder coating).

Coating mofuta, mongobo, mocheso etsa qeto ea barbotage ea ho monya metsi, ho hanyetsa ho kenella ka hare ho mosebetsi oa barbotage botenya le barbotage tlas'a maemo a tšoanang. Lipatlisiso li bontšitse hore epoxy resin e amanang le sefapano e tla etsa palo e itseng ea li-pore le li-pore bakeng sa limolek'hule tsa metsi ho epoxy resin. Tharollo fihla segokanyimmediamentsi sa sebolokigolo / tšepe, ho tloha kotopo ho kena ho kutu sehlahisoa filimi generated ka segokanyimmediamentsi sa sebolokigolo ka karabelo ea tšepe, lera lena la kutu filimi sehlahisoa ho thibela karabelo ea tšepe le tharollo, barbotage ho hanyetsa fokotseha butle-butle. Ha li-ion tse ntseng li eketseha tse senyang li fihla sebopeho, sekhahla sena sa filimi ea sehlahisoa se senyeha butle-butle, ho senyeha hoa matlafala, 'me qetellong ho fella ka ho tlosoa ha epoxy ho tlosoa moqomong. Fusion bonded epoxy powder coatings e phekotsoeng e ntse e ruile ka lihlopha tsa ether le hydroxyl, lihlopha tsena tse sebetsang le bokaholimo ba liphaephe li kopantsoeng ka thata ke lik'hemik'hale tsa lik'hemik'hale ho etsa li-anti-corrosion coating. Tlatsa molomo oa ho roala, le letso-letso, mabaka a pinhole, ho roala ho na le likhato tse fapaneng tsa ho kenngoa ha metsi le ho phunyeletsa ha metsi, haeba tšireletso ea cathodic e feteletseng, e fellang ka ho iphetola ha hydrogen ea cathodic, le liathomo tse sebetsang tsa hydrogen tse bokelitsoeng, ho isa tekanyong e itseng. , haedrojene e tla ether le hydroxyl reaction, kahoo e fokolise matla a tlamahano ea ho roala le pipe ea tšepe, e leng se fellang ka ho nyamela ha matla a tlamo. Phello ke hore ho roala ho tloha phala ea tšepe.