Yiziphi Izicelo zamakhoyili ensimbi ye-Galvalume?

Amaqembu okuthenga nawokunjiniyela abhekene nesenzo esiqhubekayo sokulinganisa phakathi kobude bezinto ezibonakalayo, ubuqotho besakhiwo, nezindleko zeyunithi. Ukukhetha insimbi eboshwe okungalungile kungaholela ekwehlulekeni kwesakhiwo ngaphambi kwesikhathi, izimangalo zewaranti, noma ekusetshenzisweni kwemali kwangaphambili okungadingekile. Izimo zezimboni kanye nesimo sezulu esibi kakhulu zidinga izinto ezikhethekile lapho izinketho ezijwayelekile zingaphumeleli. Ukucacisa i-substrate enganele kuphazamisa ngokushesha imvilophu yesakhiwo noma ingxenye yemishini. Lo mhlahlandlela udlula izincazelo eziyisisekelo ukuze unikeze ukuhlolwa kobuchwepheshe kokuthi kuphi Ikhoyili yensimbi yeGalvalume isetshenziswa ngendlela efanele, lapho ibeka khona ubungozi bokusebenzisa, kanye nendlela yokucacisa amamaki alungile amaphrojekthi okuhweba. Uzofunda izimo zokunquma ezidingekayo ukuze ugweme ukwehluleka kwenkambu. Siphinde sihlole amakhono esakhiwo ukuze siqinisekise ukuthi izakhiwo zakho ezilandelayo zihlala ziqinile futhi zithobela.

Okuthathwayo Okubalulekile

• I-aluminium ejwayelekile engu-55%, i-zinc engu-43.4%, kanye ne-silicon engu-1.6% inikezela ngokuphindwe kabili noma kane ukumelana nokugqwala kwensimbi evamile ethathiwe ezindaweni ezingathathi hlangothi.

• Izinhlelo zokusebenza ezingcono kakhulu zigxile ekufuleni kwesimo sezulu esibi kakhulu, ukuvala izakhiwo, kanye nokukhiqizwa kwezimboni ezishisa kakhulu.

• I-Galvalume idinga iziqu eziqinile zemvelo; isengozini enkulu yokuwohloka ngokushesha ezindaweni ezine-alkaline kakhulu (ukhonkolo) noma ezindaweni ezinzima zezolimo (ammonia).

• Ukuhlolwa komphakeli kufanele kubeke phambili ukuthobela kwe-ASTM A792, izisindo zokumboza eziqinisekisiwe (isb., AZ50, AZ55), kanye nezimfuneko zamandla esivuno esinembile.

Icala Lobuchwepheshe: Kungani Ucacisa Ikhoyili Yensimbi Ye-Galvalume?

Ukuhlukaniswa Kokuqamba

Onjiniyela bahlala bephikisana ngokufaneleka kwezinhlobonhlobo zensimbi. Kufanele uqonde ukwakheka kwamakhemikhali okuhlukile kwalezi zinto ukuze wenze ukukhetha kokuthenga unolwazi. Ukwakhiwa okujwayelekile kwe-Galvalume kuqukethe i-aluminium engu-55%, i-zinc engu-43.4%, ne-silicon engu-1.6%. Lesi silinganiso esithile sishintsha ngokuyisisekelo indlela insimbi eziphatha ngayo endaweni ebolayo. I-Aluzinc evamile engu-25% incike kokuqukethwe kwe-aluminium ephansi, ehlinzeka ngokuvikeleka kwesithiyo esisesilinganisweni kodwa edela ukuqina okuthile kwezinga lokushisa eliphezulu. Insimbi ejwayelekile ebiyelwe incike ngokuphelele embotsheni ye-zinc engu-100%. Ukufakwa kwe-silicon engu-1.6% kungxube ye-Galvalume engu-55% kubalulekile. Ivimbela ungqimba lwe-alloy intermetallic brittle ukuthi lukhule kakhulu ngesikhathi senqubo ye-hot-dip. Lokhu kuqinisekisa ukuthi insimbi ihlala yakheka ngaphandle kokuqhekeka okuncane.

Ithebula: Ukubunjwa Kokwemboza Nokuqhathaniswa Kokusebenza

Isithiyo kanye Nokuvikelwa Komhlatshelo

Indlela yokuvikela yale alloy ethile incike endleleni yesenzo esikabili. Ingxenye ye-aluminium yenza umgoqo ominyene, we-oxide we-passive endaweni yensimbi. Lesi sendlalelo sivimba ngempumelelo umswakama nomoya-mpilo ukuthi ungafinyeleli engxenyeni engaphansi yensimbi. Ngesikhathi esifanayo, ingxenye ye-zinc inikeza ukuvikelwa komhlatshelo. Lapho ikhoyili isikwa, iklwejwa, noma igundwa, i-zinc iqala ukugqwala. Ivikela unqenqema lwensimbi oluveziwe ngokusabela kwe-galvanic. Sibona le nhlanganisela isebenza kakhulu kunezingubo ezihlanzekile ze-zinc ngoba umgoqo we-aluminium wehlisa isivinini sokuwohloka okuphelele kwe-zinc yomhlatshelo.

I-Thermal Reflectivity

Izakhiwo zezentengiselwano zibeka phezulu kakhulu ekusebenzeni kahle kokushisayo. I-Galvalume ifaka ukukhanya okuphezulu kakhulu kokushisa, okuvame ukubizwa ngokuthi i-albedo ephezulu. Lapho ukukhanya kwelanga kushaya imvilophu yokwakha, indawo eyinsimbi ibonisa ingxenye ebalulekile yemisebe yelanga. Lesi sakhiwo sithinta ngqo izibalo zomthwalo we-HVAC ezikhungweni ezinkulu zentengiso. Onjiniyela bangakwazi ukunciphisa izinto zokupholisa lapho besebenzisa ama-substrates ophahla akhanya kakhulu. Igcina amazinga okushisa angaphakathi e-ambient ephansi, okwenza ukonga amandla amakhulu phakathi nezinyanga zasehlobo eziphezulu.

Isici-kuya-Umphumela

Ungakwazi ukuxhuma i-microstructure eyingqayizivele yokuhlanganisa ngokuqondile emiphumeleni yensimu ebonakalayo. Inethiwekhi egqagqene yama-dendrite anothe nge-aluminium kanye nezindawo ezinothe nge-zinc kunciphisa kakhulu izindleko zokulungisa umjikelezo wokuphila. Izinsiza zidinga ukulungiswa okumbalwa kwesakhiwo kanye nokuthintwa kwezimonyo esikhathini sokusebenza kwazo. Lokhu kuqina okuphakeme kwandisa ukuba nokwenzeka kweziqinisekiso ezinwetshiwe kubasebenzisi bokugcina. Abakhiqizi banganikeza ngokuzethemba iziqinisekiso zokusebenza zeminyaka engu-20 kuya kwengu-40 ezindaweni ezifanele ezingathathi hlangothi.

Izicelo Eziyinhloko Zokwakha Nezokwakha

Uphahla Lwezohwebo Nezindawo Zokuhlala

Osonkontileka bathembele kakhulu ikhoyili yokufulela i-galvalume yamaphrojekthi esakhiwo esidingayo. Kodwa-ke, ukucacisa isisindo sokugqoka esifanele sinquma impumelelo yokufakwa. Ngezinhlelo zokusebenza ezipendwe kusengaphambili, izindinganiso zomkhakha zigunyaza ukuqokwa kwe-AZ50. Lokhu kulingana nama-ounces angu-0.50 wokumboza ngonyawo lwesikwele ngasinye nhlangothi zombili. Isistimu kapende ihlinzeka ngesendlalelo esingeziwe sokuvikela, okwenza i-AZ50 yanele ngokuphelele. Ngakolunye uhlangothi, amaphaneli ophahla angenalutho noma angapendiwe adinga igama le-AZ55. Ukujiya okungu-0.55-ounce kunxephezela ukuntuleka kwefilimu kapende elivikelayo.

Indlela yohlelo lokusebenza ibuye ibeke amapharamitha wezinto ezibonakalayo. Amaphaneli omthungo omile wesakhiwo ngokuvamile adinga insimbi yokuqina okuphezulu (njengeBanga lama-80) ukuze anwebe ama-purlin avulekile ngaphandle kokuchezuka. Amaphaneli ezakhiwo, afaka phezu kokhuni oluqinile, ngokuvamile asebenzisa amandla aphansi esivuno (njengeBanga lama-50). Lokhu kuvumela ukugoba okuhlanzekile, okuqinile emithungweni ngaphandle kokufaka uwoyela.

Amafacade angaphandle kanye neSiding

Izakhiwo zesimanje zezentengiselwano zivame ukusetshenziswa i-galvalume wall cladding ezakhiweni zensimbi ezakhiwe ngaphambilini (PEMBs). Impahla inikezela ngobuhle obushelelekayo, bemboni kanye nokumelana nesimo sezulu. Ukuze kwandiswe ubude besikhathi sobuhle, abathengi bavame ukuphendukela ezinhlobonhlobo ezipendwe ngaphambilini (PPGL). Ukudweba okuphumelelayo kudinga ukunakekelwa kwamakhemikhali okuqinile kanye nokuleveliswa kokucindezeleka. Ikhoyili kufanele ilale phansi ngokuphelele ngesikhathi sokumboza. Ama-primers afanelekile aqinisekisa ukuthi ijazi eliphezulu linamathela ngokuqinile ngaphandle kokuphazamisa i-substrate ye-aluminium-zinc engaphansi. Ikhoyili engalungiselelwanga kahle izobhekana nokushesha ukuchithwa kopende ensimini.

Izingxenye Zesakhiwo

Ngenkathi kuvame ukufihlwa ngemuva kwe-drywall noma i-external cladding, uhlaka lwesakhiwo lisebenzisa le nto kakhulu. Onjiniyela bayicacisela ama-purlins, ama-girts, nama-decking systems. Lezi zingxenye ezifihliwe zibhekana nokuchayeka komswakamo ngezikhathi ezithile kusukela ekucineni ngaphakathi kwemigodi yodonga. Ukuqina kwesikhathi eside kusabalulekile lapha ngoba uhlaka lwesakhiwo cishe lungenakwenzeka ukufinyelela noma ukushintshwa ngemva kokuphela kokwakhiwa. Isithiyo se-aluminium-zinc siqinisekisa ukuthi la mathambo angaphakathi ahlala enokugqwala amashumi eminyaka.

Ukusetshenziswa Kwemboni Yezokukhiqiza Nezimboni

I-HVAC kanye ne-ductwork

Amasistimu emishini yezimboni asebenza ngaphansi kokucindezeleka okushisayo okuqhubekayo. Uzothola njalo izinhlelo zokusebenza zekhoyili yensimbi ye-aluzinc ngaphakathi kwezinhlelo zokufudumeza nokupholisa. Isici esivelele sale nto ikhono layo lokukwazi ukumelana namazinga okushisa aqhubekayo afika ku-315°C (600°F) ngaphandle kokuwohloka kwesakhiwo noma ukuguquguquka okukhulu kombala. Insimbi evamile eyakha ama-galvanized iqala ukuphephuka futhi ihluleke emazingeni okushisa aphansi kakhulu. Lokhu kwenza ingxubevange engu-55% ye-aluminiyamu ifanelekele izishintshisi zokushisa, amapayipi embonini, kanye nezindawo zokubiyela.

Ukukhiqiza Izinto zikagesi (Izimpahla Ezimhlophe)

Imboni kagesi iphoqelela izidingo eziqinile zokuthola izinto ezisetshenziswa emishinini yokuwasha, iziqandisi, namahhavini. Abakhiqizi babiza lo mkhakha ngokuthi 'impahla emhlophe.' Lezi zikagesi zisebenza ezindaweni ezinomswakama ophezulu we-ambient kanye nokuchayeka kaningi kumakhemikhali avela kuma-ejenti okuhlanza. I-substrate kufanele imelane nokuswakama okuqhubekayo kuyilapho yamukela ukuqedwa kwezimonyo ezicwebezelayo. I-microstructure elawulwa ngokuqinile ye-coating inikeza i-canvas ephelele ye-powder coating noma umdwebo omanzi. Ivimbela ukugqwala okunwabuzelayo ukuthi kuzungeze izimbobo zokubopha noma imiphetho enezitembu.

Ezezimoto Nezokuthutha

Umkhakha wezokuthutha ufuna izinto eziqinile zemihlangano efihliwe. Onjiniyela bavamise ukukhetha le alloy ezingxenyeni zomzimba ezingavezwanga kanye nezivikelo zokushisa zendawo. Izimoto zihlangabezana nemfucumfucu yomgwaqo eyeqisayo, umswakama, nosawoti womgwaqo. Ngaphezu kwalokho, amasistimu e-exhaust akhiqiza ukushisa okukhulu kwendawo. I-substrate isebenza njengesivimbeli esikhethekile esishisayo nesokugqwala, sivikela izinto zikagesi ezizwelayo kanye nekhabhinethi yabagibeli ekushiseni okukhipha umoya.

Izingozi Zokusebenzisa: Lapho *Ungasebenzisi* i-Galvalume

Ukwehluleka Kwemvelo Ye-alkali

Naphezu kokuqina kwayo okuphawulekayo, le nto inemikhawulo enzima. Kufanele uhlole ngokusobala indawo yokuthunyelwa. Ukubeka le alloy ukuthintana ngqo nokhonkolo omanzi noma udaka kubangela ukwehluleka okuyinhlekelele. Ukhonkolo umele indawo ene-alkaline ene-pH ephezulu. Le alkalinity ihlakaza ngokushesha ungqimba lwe-aluminium passivation, ishiya insimbi ingavikelekile ngokuphelele. Ngokufanayo, akumele neze uyifake ezingodweni eziphekiwe eziqukethe izigcina-mpilo ezisekelwe ethusi. Ithusi lisebenza njenge-cathode kuyilapho ukumbozwa kwe-aluminium-zinc kusebenza njenge-anode. Lokhu kudala i-galvanic cell enolaka, okuholela ekugqwaleni okusheshayo.

Ukuvalelwa Kwezolimo

Izakhiwo zezolimo ziveza enye ingozi ebalulekile. Indawo okuhlala kuyo imfuyo ikhiqiza inqwaba yemfucuza yezilwane. Le mfucumfucu ikhipha ukugcwala okuphezulu komhwamuko we-ammonia emoyeni. I-Amonia ihlasela ingxenye ye-aluminium ye-coating cishe ngokushesha. Okwezakhiwo zokuvalela ezolimo, izimbobo ezijwayelekile ze-heavyweight galvanized (njenge-G90) noma izinsimbi ezithile ezakhiwe nge-epoxy-coated ephezulu zidlula ngokuphawulekayo ingxubevange engu-55% ye-aluminium.

• Indlela Engcono Kakhulu: Ngaso sonke isikhathi cwaninga izimo zomkhathi wangaphakathi wendawo ehlongozwayo ngaphambi kokucacisa i-metallic coating.

• Iphutha Elivamile: Ukuthatha 'i-premium' enamathelayo isebenza emhlabeni wonke kuyo yonke imikhakha yezimboni nezolimo.

I-Edge Creep Dynamics

Kufanele ulondoloze okulindelekile okungokoqobo mayelana nokugqwala onqenqemeni. Lapho isitolo sokwakha sigunda iphaneli, sidalula umongo wensimbi ongahluziwe. Ngenkathi i-zinc ezungezile izama ukuvikela lolu hlangothi ngokuzidela, inemikhawulo. Ezindaweni ezingasogwini ngokwedlulele lapho kunesifutho sikasawoti esindayo, ukukhasa onqenqemeni kwenzeka ngokushesha. Usawoti usheshisa ukuchithwa kwe-galvanic ye-zinc. Ngezicelo zasolwandle ngaphakathi kwemayela elilodwa logu, kufanele ugunyaze imiphetho evaliwe efekthri. Okunye, cacisa uchungechunge lwe-aluminium yebanga lasolwandle elizinikele kunomkhiqizo wensimbi oboshiwe.

Imibandela Yokuthola Umnikezeli Wekhoyili Yezimboni ye-Galvalume

Ukumisa nokuhambisana

Ukulawulwa kwekhwalithi kuqala esigabeni sokuthenga. Kufanele udinge Imibiko Yokuhlolwa Kwemishini (MTRs) kuwo wonke amaqoqo ensimbi. Le mibhalo iqinisekisa ukubambelela ngokuqinile kumazinga e-ASTM A792/A792M. I-MTR ichaza ngokunembile ukwakheka kwamakhemikhali kokunameka futhi iqinisekisa amandla okukhiqiza emishini yensimbi eyisisekelo. Uma umphakeli engabaza ukuhlinzeka ngama-MTR alandelekayo, kubheke njengento engafaneleki ngokushesha.

Amakhono Okucubungula

Ukusebenzisana nomphakeli onekhono kudlula ukutholakala kwezinto eziyisisekelo. Udinga i umhlinzeki wekhoyili we-industrial galvalume uziqhayisa ngokucubungula okuqinile kwasendlini. Ukusika okunembayo, ukugunda, kanye nezinga lokuqina akuxoxiswana ngalo. Ukwehlukaniswa okungalungile kudala ingcindezi enkulu emaphethelweni, okuholela emiphethweni engamagagasi noma izinkinga ze-camber ngesikhathi sokwakhiwa komqulu. A okuthembekile Umhlinzeki wekhoyili ye-galvalume usebenzisa amathuluzi anembayo ukuze anciphise ukuwohloka kwezinto ngaphambi kokuba insimbi iphume endaweni yabo.

I-Inventory kanye Nezikhathi Zokuhola

Izingqinamba zochungechunge lokuhlinzekwa kwempahla ziphazamisa amashejuli okwakha futhi zikhuphule isabelomali. Kufanele uhlole ukuzinza kwempahla yasekhaya yomphakeli uqhathanisa nokuthembela kwabo ekuthengeni okuqondile okuvela kwamanye amazwe. Nakuba amakhoyili avela kwamanye amazwe angase anikeze amanani aphansi angaphambili, imizila yemikhumbi eguquguqukayo yethula ubungozi obungamukeleki besikhathi sokuhola. Izikhungo zesevisi zohlu olufushane ezigcina uhlu lwasendaweni olujulile lwamageji nobubanzi obujwayelekile. Banikeza ukushesha okudingekayo ukusekela amaphrojekthi okuhweba asheshayo.

Ukuqinisekiswa Kwesisindo Sokumboza

Akuwona wonke ama-coatings afanela yonke indawo. Misa ingqondo yakho yohlu olufushane emandleni omhlinzeki wokuletha ngokungaguquguquki amagama akhethekile we-AZ. Uma iphrojekthi yakho ihlezi endaweni emaphakathi nezwe, izisindo ezijwayelekile zanele. Kodwa-ke, uma iphrojekthi idinga izinhlelo zokusebenza ezingenalutho, umphakeli kufanele aqinisekise ukutholakala kwe-AZ55 noma ngaphezulu. Qinisekisa izinqubo zabo zocwaningo lwangaphakathi ukuze uqinisekise ukuthi baletha izisindo zokumboza ezicaciswe ku-oda lakho lokuthenga.

Isiphetho

Ukucacisa ikhoyili yensimbi yezinga lemboni kudinga ukuqondanisa okuqinile kobuchwepheshe. Kufanele ulinganise isisindo sokumboza, amandla esivuno esiyisisekelo, nokubekezelela ukucubungula ngokumelene nokuchayeka kwemvelo komkhiqizo wokugcina. Ukuqonda ubungozi ezintweni ze-alkaline kanye ne-ammonia kuvimbela ukwehluleka kwenkambu okubizayo. Ngaso sonke isikhathi hlanganisa isu lakho lokuthenga namazinga e-ASTM aqinisekisiwe namaketanga okuhlinzeka athembekile.

Njengesinyathelo esilandelayo esiwujuqu, yeluleka iminyango yakho yokuthenga ukuthi icele isampula yezinto ezibonakalayo kanye nama-MTR amanje kuzikhungo zesevisi ezingaba khona. Sebenzisa lawa masampuli ngokuhlolwa kwendawo yendawo futhi uqinisekise ukuhambisana kwamathuluzi kuma-rollformers akho ngaphambi kokuzibophezela ezinkontilekeni zamathani amakhulu.

FAQ

Q: Uyini umehluko phakathi kwezisindo zokuhlanganisa i-AZ50 ne-AZ55?

A: Igama lisho isisindo esiphelele sokumboza ngama-ounces kunyawo lwesikwele nhlangothi zombili zekhoyili. I-AZ50 ithwala u-0.50 oz/sq ft futhi iyindinganiso yemboni yezinhlelo zokusebenza ezipendwe kusengaphambili. I-AZ55 ithwala u-0.55 oz/sq ft. I-AZ55 ewugqinsi inikezwe igunya lezinhlelo zokusebenza ezingapendiwe, ezingenalutho ukuze kuqinisekiswe ukumelana nesimo sezulu okwanele isikhathi eside.

Umbuzo: Ingabe ikhoyili yensimbi ye-Galvalume ingapendwa?

A: Yebo, iyawamukela kalula upende, kodwa idinga ukulungiswa okukhethekile. Ikhoyili kufanele ihambisane ne-tension leveling ukuqinisekisa ukucaba okuphelele. Ngaphezu kwalokho, idinga ukwelashwa kwamakhemikhali okunembile kanye ne-primer ehambisanayo. Ngaphandle kwe-priming efanele, i-topcoat izohluleka ukunamathela endaweni ebushelelezi ye-aluminium-zinc, okuholela ekuphepheni okusheshayo.

Q: Ngabe impilo ye-Galvalume iqhathaniswa kanjani ne-G90 Galvanized steel?

A: Ezindaweni ezingathathi hlangothi zomkhathi, idatha ejwayelekile yokuhlola umkhathi ibonisa ukuthi ingxubevange engu-55% ye-aluminium ihlala isikhathi eside ngokuphindwe kabili kuya kane kunomkhiqizo wamagalani we-G90. I-aluminium idala umgoqo odlulayo obambezela inqubo yokuwohloka ngokuphawulekayo uma uqhathaniswa nezingubo zomhlatshelo ezisekelwe ku-zinc.

Q: Ingabe ukwakha noma ukugxiviza kulimaza ukunamathela kwe-Galvalume?

IMP: Ukwakheka okuqinile kungafaka engcupheni ukunamathela uma iziqondiso ezifanele zizitshwa. Ukwengezwa kwe-silicon engu-1.6% kusiza ukugcina ukuguquguquka. Nokho, ukweqa imikhawulo enconyiwe ye-bend radii kubangela ukuqhekeka okuncane endaweni yensimbi. Abathungi kufanele bahloniphe imingcele yokugoba futhi basebenzise okokugcoba okufanele komdwebo ukuze bavikele ukunamathela ngesikhathi sokunyathela okunzima.