Izidingo zokusebenzisa ipowda-paint kunye ne-liquid paint zihlukana kanjani?

Izinqambu Zokulungisa Isikrini Kukuphatha Kwemithwisi Yomthwisi Nokuphatha Kwemithwisi Yomthwisi Wokugcina

Ukuphatha Kwemithwisi Ngokugcina Ngokugcina Ngokugcina Nokuphatha Kwemithwisi Yomthwisi Wokugcina Ngokuchaza

Kukusebenzisa amaphepha amahlanu, ukuthola ukulinda kokuphatha kwe-corrosion ngokuphelele nokuthanda kahle phakathi kwezindawo zokugcina kuyidinga ukuphatha kwezindawo eziningi zokugcina okuzihlanu. Indima yokuqala kusobala ukusebenzisa isilungisi esisemthwakathini ukuhlula amafutha noma izinkampani zomfula kusuka kusendaweni. Emva kwalokho kufanele kwenziwe ukuchitha kahle ukuze kuvikeleke ukuthi lezinye izilungisi zokuchitha zizimisele indima eyodwa emva kwalokho. Emva kwalokho kubhekwa ukuchitha kwesilungisi esikhanyayo okuphatha isendaweni kusukela ku-Sa 2.5 ngokwesifundo se-ISO 8501-1. Lokhu kwenza isendaweni sokuthi sibe nenkambu eyodwa yokugcina okuyodwa. Emva kwalokho kubhekwa ukugcina kwezilungisi zokuguqula. Kuma-pharti wezistili, kusobala ukugcina kwezincili zezinkabi, ngakho-ke kusobala ukugcina kwe-chromate kuma-aluminum. Lezi zilungisi ziyenza izinkamba ezingenani ezinamandla ekuthinteni ukuphatha kwe-corrosion. Ukuphatha lezilungisi ngokuphelele kuyindlela enkulu. Izinkabi zokugcina kufanele zibe phakathi kwe-20 kanye ne-30 grams ngalitre, futhi i-pH kufanele ibe yisibonelo esihlukene ngokuphelele ngokuphakeme kanye ne-0.2. Amaphoyisa achaza lokhu ngaloluhour ngokusebenzisa imithambo yokuqondisa okuchazwa ngokwesifundo se-ASTM D1193 futhi noma yiziphi izinhlelo zokusebenzisa izinkampani zokuprodukha. Yini okuhlinzekile ukugcina kwezilungisi ngokwamanzi ngokulingana nokugcina kwezilungisi zokupowda? Kuloko kwenza umfula wokugcina owodwa okunqamuka, okufanele kubhekwa ngokuphelele futhi kufanele kubhekwa ngokuphelele ukuthi kubekwe inkambu emva kwalokho. Ngokwesifundo se-EPA esayishwe ngo-2023, amaphoyisa amaningi ayabeka phakathi kwe-5 kanye ne-7 gallons yenkambu eyodwa ngalokho okubeka kwe-1000 square feet. Lokhu kudanisa izindlela zokuphatha, kwenza izinkinga zokuphatha kwezinhlelo zokusebenza, futhi kwenza izinkinga zokuphatha kwezinhlelo zokusebenza okungafanele kubhekwa.

Imithambo Yokusebenzisa: Indlela Yokufaka Kwesikhali Sokuphatha Kuyahluke Kubukhwekwe Bokuphatha Ngokwesikhali

Imithambo Yokuphatha Ngokwesifanekiso Nokuphatha Ngokwesibhakabhaka Esingasemthambo Wokuphatha Kwesikhali

Ukufakwa kopende oluyimpuphu kwenzeka kuphela ngezinqubo ezomile ezingadingi izixazululo. Ngezibhamu zokuphehla ugesi, sinikeza lezo zinhlayiya ezincane ze-polymer icala elingenamsebenzi, futhi zidonswa ezingxenyeni zensimbi ezixhunywe emhlabathini, njengoba nje kwenza odonsa. Lokhu kwenza kube nokumbozwa okuhle kakhulu ezindaweni ezihlukahlukene, kusonga imiphetho kahle, futhi kudala imfucuza encane kakhulu ngisho nalapho kusetshenziswa izinto eziyinkimbinkimbi. Lapho kukhulunywa ngokwenza izingxenye eziningi ezinobukhulu obulula njengokufakwa kwamapayipi noma amapaneli ensimbi, abakhiqizi bavame ukusebenzisa lokho okubizwa ngokuthi indlela yokugeleza. Izingxenye ziqala zishiswe, bese zifakwa kulengxube yempuphu enegesi. Ukushisa okuvela engxenyeni empeleni kuyancibilika futhi kubophe izinhlayiya ze-powder ndawonye ngokushesha, kwakha izembozo ezishisayo ngokushesha okukhulu ngokusebenzisa izingqimba ezinamathelayo. Okuhle ngalezi zindlela zombili ukuthi zisebenzisa izici zemvelo zikagesi nezokushisa ezitholakala kuma-polymer omile. Ngenxa yalokho, abapendi bangafinyelela ekusebenzeni kahle kokudlulisa phakathi kuka-60% no-80% ekudluleni kokuqala kuphela, konke lokhu kugwema izixazululo eziyingozi kanye nezinhlanganisela ezivuthayo eziphilayo.

Ukuchazwa kwezinhloso zokuspray izilwane zokufaka izilwane, izilwane zokufaka ngokungafakwanga umoya, nezilwane zokufaka ngokufakwa kwemithambo yezilwane

Ukufaka izilwane zokufaka izilwane kuyidinga ukusebenzisa izinhloso zokugqamisa izilwane noma zizigaba zokukhangelwa ngokuhambisana:

• HVLP (Isivinini Esikhulu Sombala Ongaphansi) sebenzisa umoya omkhulu ngumbala ophansi (ngaphezu kwe-10 psi) ukunciphisa ukubuyiselwa kwezilwane nokufakwa kwezilwane ngaphandle, kodwa kusho ukuthi kufanele kwenziwe izihlombe eziningi ukuze kufikelele isibonelo esikhulu nokubeka kwesifunda
• Izilwane zokufaka ngokungafakwanga umoya zifaka izilwane ngamatshini amancane ngumbala we-500–3,000 psi, zisengeza izinhloso zokufaka ezikhulu ngokuphelele kwezinye izinyathelo ezingenabizo–kepha ziyakhangelwa ukuthi ziyakha izilwane zokufaka ngaphandle, izilwane zokufaka ngaphandle kwezinye izinyathelo, nokufakwa okungasemthethweni kwezinye izinyathelo
• Ukufaka izilwane ngokufakwa kwemithambo yezilwane ikhipha izilwane ezigqamiswe ukuze kuvuleke ukubambisana kwezinye izinyathelo kwezinye izinyathelo ezinamandla, kepha kufanele kubekwe izinkampani zokubambisana kwezilwane kwezilwane futhi kusho ukuthi kuyakhangelwa ukuthi izilwane ziyadlula kwezilwane kanye nokuguqula kwezilwane

Bonke ubuchwepheshe bokugcina kubonakala kubizwa ngemiphumela yokuqondana: ukuphela kwe-solvent kuyibiza ubuchwepheshe phakathi kokusebenzisa, futhi ubuchwepheshe bokugcina buya kuba buncane–kubizwa ngokuvamile ngama-30–40%. Lokhu kubizwa ngokukhula kwe-masking, ukuvulwa kwebhanki elikhulu, nokusebenza kwezinhlelo zokucima i-VOC ukuze kufanele nezimboni ze-EPA ne-OSHA.

Ubuchwepheshe bokugcina nobungakanani bokwenza izinto zokuzilapha kwe-powder paint kunye ne-liquid paint

ubuchwepheshe bokugcina be-95%+ kwe-powder paint kunye ne-30–40% kwe-liquid spray yezindaba zokugcina

Lapho isetshenziswa ngezindlela ze-electrostatic, upende oyimpuphu unamathela ezindaweni ezinamandla angafinyelela ku-95%. Iningi lalokho okufafazwayo empeleni lifika lapho kufanele liye khona, futhi noma yini eyeqile ingaqoqwa futhi isetshenziswe kabusha ngenxa yezinhlelo zokuhlunga ezivaliwe. Nokho, upende oluvamile olunezinto eziwuketshezi usitshela indaba ehlukile. Cishe u-60 kuya ku-70% walesi sakhi ugcina ulahlekile njengokufafaza ngokweqile, ulahlekile ngenxa yokunyuka kwesisombululo, noma usuke usuyinkungu engenakubuyiselwa. Lokho kusho ukuthi ukusebenza kahle kokudluliswa kwezindwangu eziwuketshezi kuvame ukuba cishe kumaphesenti angu-30 kuya kwangu-40. Umehluko nawo uyaba khona - izinkampani ezisebenzisa izembozo ze-powder ngokuvamile zinciphisa ukusetshenziswa kwazo kwezinto zokusetshenziswa ngesigamu noma ngaphezulu uma kuqhathaniswa nezindlela ezivamile. Enye into enhle? Izembozo ezenziwe ngempuphu azinawo lawo ma-VOC amabi esiye sawezwa. Azikho izinto ezingcolisa umoya eziyingozi okufanele sikhathazeke ngazo, okusho ukuthi asikho isingozi sezinkinga zokuphefumula noma ukufaka isandla ezinkingeni ze-ozone. Ngaphezu kwalokho, imfucuza evela emisebenzini yokuthuthwa kwempuphu ayinabungozi futhi ngokuvamile ingavuselelwa. Ukufafaza upende ngokweqile kudala udaka oluyingozi okumelwe lulahlwe ngokuvumelana nemithetho eqinile ye-EPA. Ucwaningo olushicilelwe emaphephandabeni ezimboni lubonisa ukuthi ukushintshela ekufakeni izembozo ezinempuphu kunganciphisa ukusetshenziswa kwamandla cishe ngo-30% uma kuqhathaniswa nezinye izindlela ezenziwe ngamanzi. Kungani? Ngoba inqubo yokuqina ithatha isikhathi esincane futhi ayidingi ukulinda ukuba izixazululo ziqale ziphume.

Ukubeka Amathuba Okukhokha Kwezindawo Zokusebenza Nokuthi Kuphakeme Ukusebenza Kwemithombo: Imiphumela Yezindlela Zokukhokha Ngokwezinkambu Zokufika Emphakathini

Isikhathi Sokukhokha Esivumelana Ne-oven Nokuthi Kuphakeme Kwenkambu Yokusebenza Nokusha Kwesikhathi Sokusebenza

Ukuze wafumane lokhu kucala okuphambili, okungakwazi ukuthi kubhekwe ngamakhemikhali, ubukhona besithuthi sobukhona kufuneka sifike emaphandleni esikhaleni esinamathuba okusika phakathi kwe-180 ne-200 degrees Celsius (ngokugcwele ku-356 ku-392 Fahrenheit). Amaphetha amahle asebenza ngendlela eyodwa ngoba aya kusuka ngokuzenzakalela noma asika ngaphandle kokudinga ukuthi kusike kakhulu. Ngokwesifundo sesiGunya saseMzantsi Afrika, i-Industrial Technologies Program, lezi zimboni zokusika zisayisa ngokugcwele ama-60% yonke imisebenzi yokuqhubeka kwizibalo zokubhusha. Izimiso zokusika ziyasiza phakathi kwe-10 ne-30 minithi, oko kuthiwa ukuthi izilayini zokuproducwa azinakusebenza ngokushesha njengazo zezilayini zokusebenza ngamaphetha amahle ozosika ngokushesha. Amadelu amasha njengezilayini zokusika ngokwesibhakabhaka (infrared) nokuthi kuyisibhakabhaka sokusika ngokwesibhakabhaka nokuthi kuyisibhakabhaka sokusika ngokwesibhakabhaka (combined convection-infrared ovens) ayisiza ekunciphiseni kwezinsuku zokusika futhi ayisiza ekunciphiseni kwezimisebenzi, kodwa isikhundla esihle esingaphakathi kwemaphandla kuyisibizo esikhulu kwezinkampani eziningi. Amakhampani kufuneka zihambisane nezinye zezinhlobo zemaphandla ngezinhlobo zokuproducwa zabo. Uma izinkampani ziyisikhulu kakhulu, wonke umph benefit wokubhusha ngokwesithuthi sobukhona ngokuthi kunciphisa izinto zokusebenza futhi ukuthi kubhekwe ngokuhle kwezinhlobo zokubhusha kwezinhlobo zokubhusha kuyasula.