Indlela yokuvimbela ukugqwala kwesakhiwo sensimbi?
Ngokukhula okuqhubekayo kokuphuma kwensimbi, izakhiwo zensimbi zithandwa kakhulu.Isetshenziswa kabanzi njengendawo yokugcina impahla, indawo yokusebenzela, igaraji, ifulethi elilungisiwe, inxanxathela yezitolo, inkundla yezemidlalo ye-prefab, njll.Uma kuqhathaniswa nezakhiwo zikakhonkolo eziqinisiwe, izakhiwo zesakhiwo sensimbi zinezinzuzo zokwakha okulula, ukusebenza kahle kokuzamazama komhlaba, ukungcoliswa kwemvelo okuncane kanye nokusetshenziswa kabusha.Kodwa-ke, izakhiwo zensimbi kulula ukugqwala, ngakho-ke i-anti-corrosion ibaluleke kakhulu ezakhiweni zensimbi.
Izinhlobo zokugqwala zezakhiwo zensimbi zihlanganisa ukugqwala komkhathi, ukugqwala kwendawo kanye nokugqwala kwengcindezi.
(1) Ukugqwala komkhathi
Ukugqwala komkhathi kwezakhiwo zensimbi kubangelwa ikakhulukazi imiphumela yamakhemikhali kanye ne-electrochemical yamanzi nomoya-mpilo osemoyeni.Umhwamuko wamanzi osemkhathini wenza ungqimba lwe-electrolyte endaweni yensimbi, futhi umoya-mpilo osemoyeni uncibilika kuwo njenge-cathode depolarizer.Zakha ingqamuzana eliyi-galvanic eliqala ukugqwala elinezingxenye zensimbi.Ngemuva kokuthi ungqimba lokugqwala lwakhiwe ebusweni bamalungu ensimbi ngokugqwala komkhathi, imikhiqizo yokugqwala izothinta ukusabela kwe-electrode yokugqwala komkhathi.
(2) Ukugqwala kwendawo
Ukugqwala kwendawo kuvame kakhulu ezakhiweni zesakhiwo sensimbi, ikakhulukazi ukugqwala kwe-galvanic kanye nokugqwala kwemifantu.Ukugqwala kwe-galvanic kwenzeka ikakhulukazi ezinhlanganisela zensimbi ezahlukene noma ekuxhumekeni kwezakhiwo zensimbi.Insimbi enamandla angemahle igqwala ngokushesha, kuyilapho insimbi enamandla amahle ivikelekile.Lezi zinsimbi ezimbili zakha ingqamuzana le-galvanic eligqwalayo.
Ukugqwala kwe-Crevice kwenzeka ikakhulukazi emifantwini engaphezulu phakathi kwamalungu ahlukene esakhiwo sensimbi naphakathi kwamalungu ensimbi nokungewona awensimbi.Lapho ububanzi bomgodi bungenza uketshezi lugxamalaze emfantwini, ububanzi bomsele obuzwela kakhulu bokugqwala kwesakhiwo sensimbi bungu-0.025 ~ o.1mm.
(3) Ukugqwala kwengcindezi
Ngendlela ethile, isakhiwo sensimbi sinokugqwala okuncane uma singekho ngaphansi kwengcindezi, kodwa ngemva kokubhekana nokucindezeleka okuqinile, ingxenye izophuka ngokuzumayo ngemva kwesikhathi esithile.Ngenxa yokuthi alukho uphawu olusobala lokuqhekeka kokugqwala kwengcindezi kusenesikhathi, kuvame ukuholela emiphumeleni eyinhlekelele, njengokuwa kwebhuloho, ukuvuza kwamapayipi, ukuwa kwesakhiwo nokunye.
Ngokusho kwendlela yokugqwala yesakhiwo sensimbi, ukugqwala kwayo kuwuhlobo lomonakalo ongalingani, futhi ukugqwala kukhula ngokushesha.Uma ingaphezulu lesakhiwo sensimbi seligqwalile, umgodi wokugqwala uzokhula ngokushesha ukusuka phansi ukuya ekujuleni, okuholela ekugxilweni kokucindezeleka kwesakhiwo sensimbi, okuzosheshisa ukugqwala kwensimbi, okuyindingilizi enonya.
Ukugqwala kunciphisa ukumelana nokubanda okuqinile namandla okukhathala kwensimbi, okuholela ekuqhekekeni okungazelelwe kwezingxenye ezithwala umthwalo ngaphandle kwezimpawu ezisobala zokuguga, okuholela ekuweni kwezakhiwo.
Indlela yokuvikela yokugqwala kwesakhiwo sensimbi
1. Sebenzisa insimbi ekwazi ukumelana nesimo sezulu
Uchungechunge lwensimbi ephansi ye-alloy phakathi kwensimbi evamile nensimbi engagqwali.Insimbi yesimo sezulu yenziwe nge-carbon steel evamile enenani elincane lezinto ezimelana nokugqwala njengethusi ne-nickel.Inezici zamandla nokuqina, isandiso sepulasitiki, ukwakha, ukushisela nokusika, ukuhuzuka, izinga lokushisa eliphezulu nokumelana nokukhathala kwensimbi ephezulu;Ukumelana nesimo sezulu izikhathi ezi-2 ~ 8 kune-carbon steel evamile, futhi ukusebenza kwe-coating 1.5 ~ 10 izikhathi ze-carbon steel evamile.Ngesikhathi esifanayo, inezici zokumelana nokugqwala, ukumelana nokugqwala kwezingxenye, ukunwetshwa kwempilo, ukunciphisa nokunciphisa ukusetshenziswa, ukonga abasebenzi kanye nokonga amandla.Insimbi yesimo sezulu isetshenziselwa ikakhulukazi izakhiwo zensimbi ezivezwe emkhathini isikhathi eside, njengezitimela, izimoto, amabhuloho, imibhoshongo nokunye.Isetshenziselwa ukwenza iziqukathi, izimoto zikaloliwe, ama-derricks kawoyela, izakhiwo zechweba, amapulatifomu okukhiqiza uwoyela neziqukathi eziqukethe i-hydrogen sulfide corrosive media emishinini yamakhemikhali ne-petroleum.Ukuqina kwayo komthelela wezinga lokushisa eliphansi nakho kungcono kunokwensimbi evamile yesakhiwo.Izinga yinsimbi yesimo sezulu yezakhiwo ezishiselwe (GB4172-84).
Isendlalelo se-amorphous spinel oxide esingaba ngu-5O ~ 100 m obukhulu esakhiwe phakathi kongqimba lokugqwala futhi i-matrix iminyene futhi inokunamathela okuhle nensimbi ye-matrix.Ngenxa yokuba khona kwaleli filimu eliminyene le-oxide, livimbela ukungena komoyampilo namanzi emkhathini ku-matrix yensimbi, libambezele ukuthuthukiswa okujulile kokugqwala ezintweni zensimbi, futhi lithuthukisa kakhulu ukumelana nokugqwala komkhathi kwezinto zensimbi.
2. Idiphu elishisayo elishisayo
Ukuvimbela ukugqwala kwe-dip eshisayo ukucwilisa ucezu lokusebenzela oluzogqitshwa kubhavu yensimbi encibilikisiwe ye-zinc ukuze icwecwe, ukuze kwakheke i-zinc ehlanzekile enamathela phezu kwendawo yokusebenza kanye ne-zinc alloy coating endaweni yesibili, ukuze kubonakale. ukuvikelwa kwensimbi nensimbi.
3. I-arc yokufafaza i-anticorrosion
Ukufafaza kwe-arc kuwukusebenzisa imishini yokufafaza ekhethekile ukuze kuncibilike izintambo zensimbi ezifuthwe ngaphansi kwesenzo samandla kagesi aphansi kanye namandla aphezulu, bese sifafaza ezingxenyeni zensimbi ezigaywe ngaphambili futhi zincishwe umoya ocindezelwe ukuze zenze i-arc efuthwe i-zinc ne-aluminium coatings. ifuthwe ngezingubo zokuvala ukugqwala ukuze kwakhiwe inhlanganisela yenhlanganisela yesikhathi eside elwa nokugqwala.I-coating ewugqinsi ingavimbela ngokuphumelelayo isisetshenziswa esibolayo ukuthi singacwilisi ku-substrate.
Izici ze-arc zokufafaza i-anti-corrosion yilezi: ukugqoka kunokunamathela okuphezulu, futhi ukunamathela kwayo akunakuqhathaniswa nopende ocebile we-zinc kanye ne-hot-dip zinc.Imiphumela yokuhlolwa kokugoba komthelela ku-workpiece ephathwa nge-arc spraying anti-corrosion treatment ayihlanganisi ngokugcwele nezindinganiso ezifanele, kodwa futhi eyaziwa ngokuthi "i-laminated steel plate";Isikhathi sokunqanda ukugqwala sokufutha kwe-arc side, ngokuvamile singu-30 ~ 60A, futhi ukujiya kokumboza kunquma impilo yokunqanda ukugqwala kwentonga.
4. I-Anti corrosion ye-thermal sprayed aluminium (zinc) ehlanganisiwe eyinhlanganisela
I-Thermal spraying aluminium (zinc) inhlanganisela yenhlanganisela iyindlela yesikhathi eside yokunqanda ukugqwala enomphumela ofanayo nowokufaka ugesi oshisayo.Inqubo iwukukhipha ukugqwala ebusweni belungu lensimbi ngokuqhunyiswa kwesihlabathi, ukuze indawo engaphezulu ivezwe ngokucwebezela kwensimbi futhi ibe rough;Bese usebenzisa ilangabi le-acetylene oxygen ukuze uncibilikise intambo ye-aluminium (zinc) ethunyelwa ngokuqhubekayo futhi uyivuthele ebusweni bamalungu ensimbi ngomoya ocindezelweyo ukuze wakhe ungqimba lokufafaza wekhekheba lezinyosi (ugqinsi olungaba ngu-80 ~ 100m);Okokugcina, ama-pores agcwaliswa nge-epoxy resin noma upende we-neoprene ukuze enze ukunamathela okuyinhlanganisela.I-aluminiyamu efuthwe nge-thermal (zinc) eyinhlanganisela ayinakusetshenziswa odongeni lwangaphakathi lwamalungu ashubhu.Ngakho-ke, zombili iziphetho zamalungu amashubhu kufanele zivalwe zingangeni moya ukuze kugwenywe ukugqwala odongeni lwangaphakathi.
Inzuzo yale nqubo ukuthi inokuguquguquka okunamandla ngobukhulu bezingxenye, futhi ukuma nobukhulu bezingxenye cishe akunamkhawulo;Enye inzuzo ukuthi umphumela oshisayo wenqubo uyindawo, ngakho-ke izingxenye ngeke zikhiqize ukuguqulwa kokushisa.Uma kuqhathaniswa ne-hot-dip galvanizing, i-industrialization degree ye-thermal spraying aluminium (zinc) eyinhlanganisela ye-thermal iphansi, amandla okusebenza okuqhunyiswa kwesihlabathi nokufuthwa kwe-aluminium (zinc) aphakeme, futhi izinga nalo lithinteka kalula izinguquko ezingokomzwelo zabaqhubi. .
5. Ukumboza i-anticorrosion
I-coating anti-corrosion yesakhiwo sensimbi idinga izinqubo ezimbili: ukwelashwa kwesisekelo kanye nokwakhiwa kokugqoka.Inhloso yokwelashwa kwe-base course ukususa i-burr, ukugqwala, ibala likawoyela nokunye okunamathiselwe ngaphezulu kwezingxenye, ukuze kuvezwe ukucwebezela kwensimbi ebusweni bezingxenye;Ukwelashwa kwesisekelo ngokucophelela, kuba ngcono umphumela wokunamathela.Izindlela zokwelapha eziyisisekelo zihlanganisa ukwelashwa okwenziwa ngesandla kanye nemishini, ukwelashwa ngamakhemikhali, ukwelashwa kokufuthwa ngomshini, njll.
Ngokuqondene nokwakhiwa kokumboza, izindlela zokuxubha ezivame ukusetshenziswa zihlanganisa indlela yokuxubha ngesandla, indlela yokugoqa ngesandla, indlela yokuhlanganisa idiphu, indlela yokufafaza komoya kanye nendlela yokufafaza okungenamoya.Indlela yokuxubha enengqondo ingaqinisekisa ikhwalithi, inqubekelaphambili, yonge izinto zokwakha futhi yehlise nezindleko.
Ngokwesakhiwo sokumboza, kunezinhlobo ezintathu: i-primer, upende ophakathi, i-primer, i-primer kanye ne-primer.I-primer ngokuyinhloko idlala indima yokunamathela nokuvimbela ukugqwala;Ijazi eliphezulu ikakhulukazi lidlala indima yokunqanda ukubola kanye nokuguga;Umsebenzi wopende ophakathi uphakathi kwe-primer nokuqeda, futhi ungandisa ubukhulu befilimu.
Kuphela lapho i-primer, ijazi eliphakathi kanye nejazi eliphezulu lisetshenziswa ndawonye bangadlala indima engcono kakhulu futhi bazuze umphumela omuhle kakhulu.
Isikhathi sokuthumela: Mar-29-2022