Osonkontileka bavame ukubuka i-zinc ependiwe njengokugembula okukhulu. Uhlala uzwa izindaba zemboni mayelana nokuxebuka okuyinhlekelele kanye nokwehluleka ukunamathela okwenzeka phakathi nezinyanga zokuphothulwa kwephrojekthi. Ukungabaza kuyaqondakala ngokuphelele. Nokho, iqiniso licacile: yebo, ungakwazi ukudweba ngempumelelo. Ezicelweni zezentengiselwano nezimboni, ochwepheshe babiza le nqubo ngokuthi 'Duplex System.'
Izigxobo ziphezulu. Uma usenza ngendlela efanele, upende nokufaka uthayela kudala indlela yokuzivikela ehambisana kakhulu. Uma uyisebenzisa kabi—imvamisa ngokuthembela ekusetshenzisweni kwesihlabathi okujwayelekile nama-epoxies avamile—kumane kumoshe isabelomali sakho futhi kusheshise ukugqwala kwendawo. Upende wakho uzoshelela ngokoqobo usuke ensimbi.
Sakhe lo mhlahlandlela ukuze siqede ukuqagela. Inhloso yethu ukuhlomisa osonkontileka, izicacisi, kanye namathimba okuthengwa kwempahla ngamaqiniso amakhemikhali angavaliziwe. Uzofunda amazinga aqondile wokulungiselela adingekayo, okuhlanganisa izimiso ezibalulekile ze-ASTM. Uzothola nengqondo yokukhetha ukunamathela edingekayo ukuze uqinisekise isiphetho esiqinisekisayo, esingenasici, nesihlala isikhathi eside.
Okuthathwayo Okubalulekile
Ukunamathela kuncike kumakhemikhali angaphezulu, hhayi nje ubulukhuni: Ukusahlabathi okujwayelekile komshini kuvame ukulimaza ungqimba lwezinc ngaphandle kokuqinisekisa ukunamathela kopende.
Iminyaka yobudala inquma inqubo: I-zinc esanda kufakwa uthayela, isimo sezulu kancane, kanye ne-zinc enesimo sezulu esigcwele idinga izinqubo zokulungiselela ezihluke ngokuphelele.
Ungalokothi usebenzise ama-alkyd noma ama-primer asekelwe kuwoyela: Asabela nge-zinc (saponification), aphendule isixhumi esibonakalayo sensipho eshelelayo, okuholela ekuxebukeni okuphelele.
Hlola ezinye izindlela kusenesikhathi: Kuma-assemblies anembe kakhulu athambekele ekuhlanekezeleni okushisayo, ama-primers anothe nge-zinc asebenza kakhulu kunsimbi engenalutho angase anikeze i-ROI engcono kune-hot-dip galvanizing (HDG) kanye nopende.
Ikesi lebhizinisi 'Duplex System'
Kufanele siqale sichaze i-Duplex System ukuze siqonde inani layo. Kuyinhlanganisela yamasu yokumboza i-hot-dip galvanized (HDG) kanye noketshezi olukhethekile noma ijazi eliyimpushana. Ukufeza lokhu ngendlela efanele, yonke inqubo kufanele ihlale ithobelana ngokuqinile nezinga le-ASTM D6386. Leli zinga lilawula ukulungiswa kwezindawo ze-zinc zokudweba.
Inzuzo eyinhloko yalolu hlelo ilele kumphumela wayo we-synergistic. Ifilimu kapende yangaphandle isebenza njengesithiyo. Ivikela i-zinc engaphansi ekusetshenzisweni ngaphambi kwesikhathi okubangelwa ukungcola komkhathi. Ngokubuyisela, i-zinc engaphansi ihlinzeka ngokuvikeleka okukhulu kwe-cathodic. Uma upende uklwejwa noma ugojwa, i-zinc isebenza njenge-anode yomhlatshelo. Ivimbela i-rust creepage engaphansi kwefilimu, iqinisekisa ukuthi umonakalo uhlala usendaweni.
Le ndlela yokuvikela enezendlalelo ezimbili inweba impilo ende kakhulu. Isamba sempilo yesevisi yesistimu ye-duplex ngokuvamile izikhathi ezingu-1.5 kuya kwezingu-2.5 kunesamba sesikhathi sokuphila komuntu ngamunye we-zinc nopende kuphela. Awutholi nje izingqimba ezimbili zokuvikela; uthola umphumela wokuphindaphinda.
Lokhu kunengqondo kusebenza kuzo zonke izinhlelo zokusebenza eziningi zokukala. Ungase uphathe insimbi yesakhiwo esindayo ngemuva kokwakhiwa kwenkundla yezemidlalo yangaphandle. Ngakolunye uhlangothi, ungasebenzisa i-pre-painted ikhoyili yensimbi ebiyelwe kanye izinto zeshidi lensimbi enamapulangwe zokukhiqiza ivolumu ephezulu yezakhiwo. I-chemistry eyisisekelo nezimiso zokuvikela zihlala zifana ngokunganaki ifomethi yezinto ezibonakalayo.
Ukuhlola Isimo Sokumboza: Izigaba Ezi-3 Zokujwayela Isimo Sezulu
Uhlaka lwakho lokuhlola okungaphezulu lubeka impumelelo noma ukwehluleka. I-protocol yokulungiselela incike ngokuphelele ekutheni isikhathi esingakanani Insimbi eyiGalvanized ivezwe emkhathini. Awukwazi ukuphatha i-zinc endala ne-zinc entsha ngendlela efanayo.
Okusanda Kukhanyiswa (Amahora angu-0 kuye kwangama-48)
Kuleli windi lokuqala, isimo sensimbi sibushelelezi ngokwedlulele futhi sibonakalisa kakhulu. Cishe awekho ama-zinc compounds asekhekile phezulu okwamanje. Insimbi ayinazimbobo ngokuphelele. Ngenxa yokuthi awunawo ukuthungwa, upende awunalutho ongawubamba. Isenzo siyimpoqo. Indawo engaphezulu idinga ukuhlanzwa okuphelele kanye nokuphoqeleka kwamakhemikhali noma ukwenza iphrofayili ngomshini. Kufanele ugcizelele indawo engaphezulu ukuze udale amaphoyinti okunamathisela amancane amancane ukuze anamathele.
Isimo Sezulu Ngokwengxenye (Izinsuku Ezi-2 Kuya Onyakeni O-1) - Isiteji Sengozi Ephakeme Kunazo Zonke
Lesi yisiteji esiyingozi kakhulu sokufaka izicelo zokumboza. Phakathi nalezi zinyanga, isimo esingaphezulu sishintsha ngokushesha. Imbozwa ngama-zinc oxides anamathela ngokukhululekile kanye nama-zinc hydroxides. Uvame ukubona lokhu njengokugqwala okuyimpushana ensimbi. Lezi zinhlanganisela ezixekethile ziphazamisa kakhulu ukunamathela kopende. Uma upenda phezu kwabo, upende unamathela kumpushana, futhi impushana idonsa kude nensimbi. Isenzo sidinga ukuhlanzwa okunamandla kanye nokwenza iphrofayela. Kufanele ususe ngokuphelele lawa madiphozithi ano-chalky ngaphambi kokufaka noma iyiphi i-primer.
Isimo Sezulu Ngokugcwele (Unyaka O-1+)
Ngemva konyaka wokuchayeka, insimbi iyazinza. Isimo esingaphezulu siyaguquka njengoba sidonsa i-carbon dioxide emoyeni. Yakha i-zinc carbonate. Lena inhlanganisela ebambelele ngokuqinile, engancibiliki emanzini. I-Zinc carbonate empeleni iyi-substrate enhle kakhulu, eqinile ngokwemvelo yopende. Isenzo lapha sidinga ukuqapha. Udinga kuphela ukuhlanza okuncane usebenzisa amanzi afudumele kanye ne-degreaser emnene. Kubalulekile ukuthi ungasusi ungqimba lwe-zinc carbonate ngesikhathi sokuhlanza.
Isimo sezulu Isiteji |
Ubude besikhathi |
Isimo Sobuso |
Isenzo Esidingekayo |
Ezisanda Kukhanyiswa |
0 kuya ku-48 Amahora |
Ibushelelezi, iyacwebezela, ayinazimbotshana |
Hlanza kahle; sebenzisa ukufakwa kwamakhemikhali noma komshini. |
Isimo Sezulu Ngokwengxenye |
Izinsuku ezi-2 ukuya onyakeni ongu-1 |
Ukugqwala okuyimpuphu emhlophe (i-zinc oxides/hydroxides) |
Susa ngokunamandla zonke izinhlanganisela ezixekethile nephrofayili. |
Isimo Sezulu Ngokugcwele |
1 Unyaka+ |
Isendlalelo se-zinc carbonate esizinzile |
Ukukhipha amafutha okuncane kuphela; gcina i-zinc carbonate. |
Ukulungiselela Ubuso: Ukunciphisa Izingozi Zokuhluleka
Ngisho noma usihlonza ngokunembile isigaba sesimo sezulu, ukungasebenzi kahle ngesikhathi sokulungiselela kuzocekela phansi uhlelo lwe-duplex. Kufanele ulandele imithetho eqinile ukuze unciphise ubungozi bokwehluleka.
Ukunciphisa Ubungozi (Ukuhlolwa kwe-Chromate)
Izinsiza zivame ukucwilisa insimbi esanda kwenziwa emabhathini e-chromate. Lawa ma-passivation agents avimbela ibala lesitoreji esimanzi ngesikhathi sokuthutha. Kodwa-ke, ama-chromates axosha upende. Kufanele njalo uhlole ama-ejenti wokudlula usebenzisa iphrothokholi ye-ASTM B201. Uma ukuhlolwa kwembula ama-chromates, awukwazi ukupenda insimbi ngokushesha. Ama-chromates kufanele adlule ngokwemvelo, noma kufanele uwasuse ngobudlova ngokusebenzisa iphrofayela yokulungisa.
Ukuhlanza Amaphrothokholi
Ngaphambi kokulungisa indawo engaphezulu, kufanele ususe konke ukungcola, uwoyela, nokungcola okuphilayo. Landela lezi zinyathelo ezilandelanayo ukuze uhlanzeke kahle:
Faka isixazululo esine-alkaline noma esine-acidic (esivame ukuhlanjululwa ngo-25:1) ngaphezulu.
Sebenzisa ibhulashi le-bristle elithambile ukuze uphazamise ukungcola okuphilayo okunenkani.
Hlanza ingaphezulu ngamanzi ahlanzekile, ahlanzekile ukuze unciphise izinto zokuhlanza.
Vumela insimbi yome ngokuphelele ngaphambi kokudlulela esigabeni sokuphrofayili.
Ezindaweni ezihlanzekile zeshidi elisha, ukusula uviniga omhlophe wemboni kunganikeza i-asidi esebenza kahle kakhulu, ethambile ngenkathi kususwa uwoyela okhanyayo ngasikhathi sinye.
Ukwenza Iphrofayela (Ukudala Iphethini Yehange)
Upende udinga izigodi ezincane neziqongo ukuze ukhiyeleke. Lokhu sikubiza ngephethini yehange. Unezindlela ezimbalwa zokufeza lokhu ngaphandle kokubhubhisa insimbi.
I-Sweep Blasting (SSPC-SP 16): Leli izinga lembonini lokuphrofayili ngomshini. Kufanele usebenzise inqubo yokuqhuma kwe-engeli ephansi. Bamba umlomo wombhobho phakathi kuka-30 no-60 degrees. Sebenzisa i-abrasive enobulukhuni obuphansi. I-abrasive kumele ilingane nobulukhuni be-Mohs obungu-5 noma ngaphansi (njengamagobolondo ama-walnut, ama-corncobs, noma izihlabathi ezithile zamaminerali). Gcina usayizi wezinhlayiyana phakathi kwama-microns angama-200 no-500.
Ingozi Yokuqhumisa Okudlulele: Kufanele ugweme ukuqhunyiswa kwesihlabathi okujwayelekile okungu-90-degree ngazo zonke izindleko. Ukuqhuma okujwayelekile kuzohlubula i-zinc ethambile ngokuphelele. Lokhu kucekela phansi isivikelo se-anode yomhlatshelo, okwenza yonke inqubo yokugaya ibe yize. Uma ukushanela kuzwakala kuyingozi kakhulu kubasebenzi bakho basensimini, shintsha izindlela zamakhemikhali.
Geza Ama-Primers / Acrylic Pretreatment: Lawa amafomu ane-acidic aklanyelwe ukuguqula ngamakhemikhali ukungezwani kwe-zinc surface. Baphoqa i-zinc ukuthi yamukele upende ngaphandle kokudinga ukuhuzuka komshini. Lokhu kuqeda ngokuphelele ingozi yokuqhuma ngokweqile.
Ukukhethwa Kwezingubo: Ikhemistri Enamathela Empeleni
Ukulungiselela kwakho kungase kungabi nasici, kodwa ukusebenzisa ikhemistri engalungile kusazobangela ukwehluleka okuyinhlekelele. I-Zinc iyinsimbi ye-alkaline, futhi isabela ngobudlova ngokwenziwa okuthile kopende.
I-Cardinal Rule (Yini Okufanele Ukugweme)
Kufanele uvimbele ngokuqinile upende osuselwe ku-alkyd kanye neziqalo ezisezingeni elisekelwe kuwoyela. Lapho i-zinc ihlangana nama-alkyd resins, ukusabela kwamakhemikhali okungalawuleki kwenzeka. Lokhu kwaziwa ngokuthi i-saponification. I-alkaline zinc ihlangana namafutha ukuze kwakhe ungqimba lwangempela lwensipho ngaphansi kwefilimu kapende. Uma i-saponification yenzekile, ukumbozwa kuzophuma kumashidi amakhulu, aguquguqukayo. Lokhu kuqinisekisa ukwehluleka okuphelele kokunamathela.
Ama-Primer Systems Agunyaziwe
Kufanele ucacise ama-primer aklanywe ngokucacile ukuze ahlangane ne-zinc. Imboni ibona izigaba ezimbili eziyinhloko.
Ama-Primers Akhethekile Azikekela: Lawa akhelwe ngokukhethekile izindawo ezifakwe uthayela ezidiphu ezishisayo. Zivumelana nezicaciso ezifana ne-SSPC Paint 27. Ziluma ensimbi ngamakhemikhali.
Ama-Acrylic Metal Primers: Iziqalo ze-acrylic ezitholakala emanzini zekhwalithi ephezulu zibonisa ukunamathela okuhle kakhulu ku-zinc ehlanzwe kahle. Ahlala eguquguquka futhi amelana ne-saponification ngokuphelele.
Amajazi aphezulu aphezulu
Uma usuqale phezulu, udinga ijazi langaphezulu eliqinile ukumelana nokuhlukunyezwa kwemvelo. Sincoma opende be-acrylic latex be-Direct-To-Metal (DTM) noma ama-enamel e-acrylic e-DTM ezinhlelweni eziningi zezakhiwo zangaphandle.
Ezimweni ezinolaka, kufanele uthuthukise ukucaciswa kwakho. Cabanga ngezikhungo zasemanzini ezine-chlorine ephezulu. Amajazi empushana enziwe nge-polyester ahluleka ngokushesha lapho evezwa kuhwamuko lwangaphakathi lwamanzi. Kulezi zimo, cacisa upende wesinyathelo esisodwa sezimboni. Lawa kapende akhethekile wezimboni adlula isidingo sama-primer etching ahlukene ngoba ahlangana ngamakhemikhali ngqo nongqimba lwezinc.
Isigaba sokumboza |
Izibonelo / Izinhlobo |
Isinqumo seDuplex Systems |
Amafomula Avinjelwe |
Ama-alkyd enamels, ama-primers asekelwe kuwoyela ajwayelekile |
Gwema Ngokuqinile. Ibangela i-saponification (ukwakheka kwensipho) kanye nokuxebuka ngokuphelele. |
Ama-Primers agunyaziwe |
I-SSPC Paint 27, iziqalo zensimbi ye-acrylic, iziqalo zokuwasha |
Kunconywe kakhulu. Inikeza ukunamathela kwamakhemikhali okuzinzile ngaphandle kokusabela kabi. |
I-Topcoats efanelekile |
I-DTM acrylic latex, ama-enamel e-DTM, amapende e-zinc esinyathelo esisodwa sezimboni |
Kunconywe kakhulu. Yakha isithiyo esiqinile, esivumelana nezimo, esimelana nesimo sezulu. |
I-Counter-Argument: Nini Yokweqa I-Galvanizing + Paint
Kufanele sibhekane neqiniso elibalulekile lokuqaliswa. I-hot-dip galvanizing elandelwa ukudweba kuyinqubo eyinkimbinkimbi ngendlela emangalisayo, ehlanganisa ukuhweba okuningi. Iphethe imaji ephezulu yephutha. Kwesinye isikhathi, isistimu ye-duplex iyinketho engalungile yephrojekthi yakho.
Ukuqaliswa Okungokoqobo Nokulawulwa Kwekhwalithi
Ukuqamba akuvamile ukuhamba kahle. Ukulungiswa kwenkundla kudinga ukushiselwa esizeni. Ukushisela ngokushesha kucekela phansi isendlalelo se-HDG. Lapho osonkontileka belungisa la mashisela ensimini ngesifutho se-zinc esibandayo, ukulungisa kuphansi kakhulu kune-hot-dip galvanizing yasefekthri. Udala isixhumanisi esibuthakathaka kuchungechunge lwakho lokulwa nokugqwala.
I-Thermal Distortion Risk
Kufanele futhi ucabangele ukushisa okunamandla kokugeza okuvuthisa amanzi. Izakhiwo zensimbi eziyinkimbinkimbi noma ezinembe kakhulu zisengozini enkulu e-warpage kanye nokuhlanekezeka ngesikhathi senqubo yokucwiliswa. Uma idizayini yakho yezakhiwo idinga ukubekezelelana ngqo, kufanele ubheke imihlahlandlela ye-ASTM A384 yokuhlanekezela okushisayo. Ngokuvamile, ingozi yokushisa imane iphezulu kakhulu.
Enye Indlela Esebenza Kakhulu Yokuqala
Cabangela izidingo zokulungiswa kwendawo yejazi lakho lokugcina. Amanye amajazi aphezulu olwandle noma amajazi emboni afuna iphrofayela 'Near-White Blast' ukuze anamathele ngendlela efanele. Uma uqhumisa indawo ethathiwe ibe sezingeni Eliseduze Nokumhlophe, lokho kuqhuma okunamandla kuzobhubhisa ungqimba lwezinc ngokuphelele. Uzoqhumisa utshalomali lwakho lube uthuli.
Umqondo Wesinqumo
Ezimweni ezinembe kakhulu, noma ezinhlelweni ezisindayo zezimboni ezidinga ukuphrofayilila kokuqhuma okukhulu, kuyasebenza kakhulu ukweqa ngokuphelele ukugqugquzelwa kwediphu eshisayo. Faka i-primer ecebile nge-zinc ngqo ensimbi eqhume kahle engenalutho. Landela lokhu ngejazi lakho eliphezulu elisebenza kahle. Uzofinyelela impilo ende eqhathaniswayo, uqede ubungozi bokuhlanekezelwa okushisayo, futhi wenze lula kakhulu uchungechunge lwakho lokunikezela.
Isiphetho
Ukudweba izindawo ze-zinc kusebenza kahle kakhulu, kodwa inqubo ayibekezeleli izinqamuleli. Impumelelo yakho incike ngokuphelele ekwenzeni ukuhlolwa kwesimo sezulu okunembile, ukwenza inqubo enembile yokuphrofayili, kanye nokugwema ngokuphelele ama-resin angahambelani njengama-alkyds.
Ngaphambi kokuthi uqalise iphrojekthi yakho elandelayo, thatha isinyathelo ukuvikela ukucaciswa kwakho. Yazisa amaqembu akho okuthenga kanye nawonjiniyela ukuthi ahlole ngokunamandla ukuhamba komsebenzi wabahlinzeki. Qinisekisa ukuthi baqinisekisa ukuthobela okugcwele kwe-ASTM D6386 ngokulungiswa kwendawo kanye ne-SSPC-SP 16 yokuqhuma okushanele. Ngokufuna ukubambelela kulawa mazinga, uguqula umsebenzi wokudweba oyingozi ube yisistimu ephindwe kabili ehlala isikhathi eside.
FAQ
Umbuzo: Ungakwazi yini ukudweba uqonde phezu kwensimbi?
IMP: Cha. Okungalungiselelwe, okusanda kufakwa uthayela kubushelelezi kakhulu futhi kuyasebenza ngamakhemikhali ukuze kunamathele upende ojwayelekile. Kufanele uyihlanze kahle insimbi, uyifake iphrofayili usebenzisa i-etch yamakhemikhali noma ukuqhuma okunomfutho ophansi, bese usebenzisa i-primer yensimbi ekhethekile kuqala.
Q: Hlobo luni lukapende oluzonamathela ensimbini?
A: Kufanele usebenzise opende be-acrylic latex be-Direct-To-Metal (DTM), oqweqwe lwe-acrylic, noma opende abakhethekile bezimboni abayisinyathelo esisodwa abakhelwe i-zinc. Akumele usebenzise upende we-alkyd noma uwoyela, njengoba uzodala i-saponification futhi nakanjani uzoxebuka.
Q: Ngipenda kanjani insimbi egqwalile (yesimo sezulu)?
IMP: Uma ubona 'ukugqwala okumhlophe' (i-zinc oxide), kufanele uyisuse kahle ngokuyihlanza nokwehlisa amafutha. Uma ubona ukugqwala okubomvu, insimbi engaphansi ivezwa. Kufanele wenze ukulungisa ukugqwala kwendabuko futhi usebenzise i-patch primer enothe nge-zinc ngaphambi kokumboza ngokuphelele indawo.
Umbuzo: Ngidinga i-primer ekhethekile yekhoyili yensimbi?
A: Yebo. Amakhoyili ngokuvamile afaka izindlela zokwelapha ze-passivation ezifana nama-chromates noma amafutha okugoqa asetshenziswa efekthri. Kufanele uqale ususe lezi zendlalelo ezivikelayo ngamakhemikhali. Ngemuva kwalokho, kufanele usebenzise i-primer yensimbi ezizibayo noma esekwe ku-acrylic ngaphambi kokufaka ijazi lakho lokugcina.
