I-anti-corrosion of galvanized steel pipe welding: Ngemva kokwelashwa okungaphezulu, i-zinc yesifutho esishisayo. Uma ukucwebezela kungenzeki esizeni, ungalandela indlela esendaweni yokunqanda ukugqwala: ibhulashi i-epoxy zinc-rich primer, i-epoxy micaceous iron intermediate paint, ne-polyurethane topcoat. Ugqinsi lubhekisela ezindinganisweni ezifanele.

Izici zenqubo yamapayipi ensimbi
1. Ukwenziwa ngcono kwe-sulfate galvanizing: Inzuzo ye-sulfate galvanizing ukuthi ukusebenza kahle kwamanje kuphezulu njengo-100% futhi izinga lokubeka liyashesha, elingenakuqhathaniswa nezinye izinqubo zokugalela. Ngenxa yokuthi i-crystallization yokumboza ayilungile ngokwanele, ikhono lokuhlakazeka kanye nekhono lokucwenga elijulile limpofu, ngakho lifaneleka kuphela amapayipi e-electroplating nezintambo ezinobunjwa bejometri elula. Inqubo ye-sulfate electroplating zinc-iron alloy ithuthukisa inqubo yendabuko ye-sulfate galvanizing, igcine kuphela i-zinc sulfate eyinhloko kasawoti, futhi ilahle ezinye izakhi. Kufomula yenqubo entsha, inani elifanele likasawoti wensimbi liyengezwa ukuze kwakheke ingxubevange ye-zinc-iron enamathela embotsheni yokuqala yensimbi eyodwa. Ukuhlelwa kabusha kwenqubo akuthuthukisi nje kuphela izinzuzo zenqubo yokuqala yokusebenza kahle kwamanje okuphezulu kanye nezinga lokubeka elisheshayo kodwa futhi kuthuthukisa kakhulu ikhono lokuhlakazeka kanye nekhono lokucwebezela elijulile. Esikhathini esidlule, izingxenye eziyinkimbinkimbi azikwazanga ukugqitshwa, kodwa manje zombili izingxenye ezilula neziyinkimbinkimbi zingafakwa, futhi ukusebenza kokuvikela kuyizikhathi ezi-3 kuya kwezi-5 eziphakeme kunezensimbi eyodwa. Ukuzijwayeza ukukhiqiza kufakazele ukuthi i-electroplating eqhubekayo yezintambo namapayipi kunezinhlamvu zokunamathela ezicolekile nezicwebezelayo kunezasekuqaleni, futhi izinga lokubeka liyashesha. Ugqinsi lwe-coating lufinyelela isidingo phakathi kwemizuzu emi-2 kuya kwemi-3.

2. Ukuguqulwa kwe-sulfate zinc plating: I-sulfate electroplating ye-zinc-iron alloy igcina kuphela i-zinc sulfate kasawoti eyinhloko ye-sulfate zinc plating, futhi izingxenye ezisele ezifana ne-aluminium sulfate ne-alum (i-potassium aluminium sulfate) ingangezwa nge-sodium hydroxide ngesikhathi ukwelashwa kwesixazululo se-plating ukukhiqiza imvula ye-hydroxide engancibiliki ukuze isuswe; ngezithasiselo eziphilayo, ikhabhoni ecushiwe eyimpuphu yengezwa ukuze kukhangiswe futhi kususwe. Ukuhlolwa kubonisa ukuthi i-aluminium sulfate ne-potassium aluminium sulfate kunzima ukususa ngokuphelele ngesikhathi esisodwa, okunomthelela ekukhanyeni kokugqoka, kodwa akukona okungathí sina futhi kungadliwa ngokususa. Ngalesi sikhathi, ukukhanya kwe-coating kungabuyiselwa. Isixazululo singangezwa ngokusho kokuqukethwe kwezingxenye ezidingwa yinqubo entsha ngemva kokwelashwa, futhi ukuguqulwa kuqediwe.

3. Izinga le-deposition esheshayo nokusebenza okuhle kakhulu kokuvikela: Ukusebenza kahle kwamanje kwenqubo ye-sulfate electroplating i-zinc-iron alloy iphezulu njengo-100%, futhi izinga lokufakwa okusheshayo alifani nanoma iyiphi inqubo yokufaka ama-galvanizing. Ijubane lokugijima leshubhu elihle liyi-8-12m/min, kanti ukushuba okumaphakathi kwe-coating kungu-2m/min, okunzima ukukufeza ngokuqhumisa ama-galvanizing. Ukwembeswa kugqamile, kuthambile futhi kuyajabulisa emehlweni. Ngokwendlela kazwelonke evamile ye-GB/T10125 “Artificial Atmosphere Test-Salt Spray Test” indlela, ukumboza akushintshile futhi akushintshile amahora angama-72; inani elincane lokugqwala elimhlophe livela ebusweni be-coating ngemva kwamahora angu-96.

4. Ukukhiqizwa okuhlanzekile okuyingqayizivele: Ipayipi lensimbi eliphehliwe lithatha inqubo ye-sulfate electroplating zinc-iron alloy, okusho ukuthi imigqa yokukhiqiza i-perforated ngokuqondile futhi isisombululo asenziwanga noma sichichima. Inqubo ngayinye yenqubo yokukhiqiza iqukethe uhlelo lokujikeleza. Izisombululo zethangi ngalinye, okuyisisombululo se-asidi ne-alkali, isixazululo se-electroplating, nesisombululo esilula nesokudlula, zigaywa kabusha futhi ziphinde zisetshenziswe ngaphandle kokuvuza noma ukukhishelwa ngaphandle kwesistimu. Umugqa wokukhiqiza unamathangi okuhlanza ayi-5 kuphela, aphinde asetshenziswe futhi asetshenziswe njalo, ikakhulukazi enqubweni yokukhiqiza ngaphandle kokukhiqizwa kwamanzi angcolile ngemuva kokudlula.

5. Ukucaciswa kwemishini ye-electroplating: I-electroplating yamapayipi ensimbi anamagqabhagqabha kuyafana nokufakwa kwe-electroplating kwezintambo zethusi, okubili okuyi-electroplating eqhubekayo, kodwa imishini yokucwenga ihlukile. Ithangi lokucwenga elidizayinelwe izici zomugqa ozacile wocingo lwensimbi lide futhi libanzi kodwa alishoni. Ngesikhathi se-electroplating, intambo yensimbi idlula emgodini futhi isakaze endaweni ewuketshezi ngendlela eqondile, igcina ibanga ukusuka komunye nomunye. Kodwa-ke, amapayipi ensimbi ahlukile kunezintambo zensimbi futhi anezici zawo eziyingqayizivele. Imishini yethangi iyinkimbinkimbi kakhulu. Umzimba wethangi wakhiwe izingxenye ezingaphezulu nezingezansi. Ingxenye engenhla ithangi lokucwenga, futhi ingxenye engezansi iyithangi lokugcina lokujikeleza kwesisombululo, okwenza umzimba wethangi le-trapezoidal elincane phezulu futhi ububanzi ngezansi. Kukhona umzila wokufaka i-electroplating yamapayipi ensimbi ethangini lokucwenga. Kunezimbobo ezimbili ezansi kwethangi ezixhunywe ethangini lokugcina ngaphansi, futhi zakha umjikelezo wesisombululo sokucwenga kanye nesistimu yokusebenzisa kabusha ngepompo engaphansi kwamanzi. Ngakho-ke, ukucwecwa kwamapayipi ensimbi kuyashukumisa, njengokucwecwa kwezintambo zensimbi. Ngokungafani ne-electroplating yezintambo zensimbi, isixazululo se-plating samapayipi ensimbi anama-electroplated nawo ashukumisayo.