Ngokubhengezwa kunye nokuphunyezwa kwemithetho yokusingqongileyo yelizwe ngokubanzi, iimfuno zokwakhiwa kwepeyinti yemoto ziya zisiba phezulu nangaphezulu.Ukupeyinta akufanele kuqinisekise kuphela ukusebenza kakuhle kwe-anti-corrosion, ukusebenza okuphezulu kokuhlobisa, kunye nokusebenza okuphezulu kolwakhiwo, kodwa kunye nokwamkela izinto kunye neenkqubo zokusebenza kakuhle kunye nokunciphisa ukukhutshwa kwezinto eziphilayo (VOC).Ipeyinti esekelwe emanzini ngokuthe ngcembe ibe yintsika yeiingubongenxa yamacandelo azo angenabungozi kokusingqongileyo.
Iipeyinti ezisekelwe emanzini azikwazi nje ukuphucula ngokufanelekileyo ukusebenza kakuhle kokugcinwa, kodwa zinamandla okugubungela, ezinokunciphisa inani leengqimba zokutshiza kunye nobuninzi bepeyinti esetyenzisiweyo, kwaye inokunciphisa ixesha lokutshiza kunye neendleko zokutshiza.
Umahluko phakathi kwepeyinti esekelwe emanzini kunye neoli
1. Ii-arhente ezahlukeneyo zokuxutywa
I-agent ehlanjululwayo yepeyinti esekelwe kumanzi ngamanzi, ekufuneka ifakwe kwimilinganiselo eyahlukeneyo ukusuka kwi-0 ukuya kwi-100% ngokuxhomekeke kwimfuno, kunye ne-agent ehlanjululwayo yepeyinti esekelwe kwioli yi-solvent ye-organic.
2. Ukusebenza okwahlukileyo kokusingqongileyo
Amanzi, into ediluting yepeyinti esekwe emanzini, akanayo ibenzene, toluene, xylene, formaldehyde, TDI yasimahla yesinyithi esinzima esinetyhefu kunye nezinye izinto ezinobungozi zecarcinogenic, kwaye ke ngoko ikhuselekile kwimpilo yabantu.
Amanzi ebhanana, ixylene kunye nezinye iikhemikhali zihlala zisetyenziswa njenge-diluting agent yepeyinti esekwe kwioyile, enezixa ezikhulu zebenzene kunye nezinye iicarcinogens eziyingozi.
3. Imisebenzi eyahlukeneyo
Ipeyinti esekelwe emanziniayingcolisi nje indalo esingqongileyo, kodwa inefilim yepeyinti etyebileyo, ecace gca emva kokusebenza kumphezulu wento kwaye inobubhetyebhetye obugqwesileyo kunye nokuchasana namanzi, i-abrasion, ukuguga kunye nokuba tyheli.
Iimpawu zobugcisa zokutshiza ipeyinti esekelwe emanzini
Ukuguquguquka kwamanzi kwipeyinti esekwe emanzini kulawulwa ikakhulu ngokulungelelanisa iqondo lobushushu kunye nokufuma kwegumbi lokutshiza, kunye nezinto eziqinileyo zokugquma zidla ngokuba yi-20% -30%, ngelixa izinto eziqinileyo zepeyinti esekwe kwi-solvent ziphezulu ukuya kuma-60%. -70%, ngoko ukugudiswa kwepeyinti esekelwe emanzini kungcono.Nangona kunjalo, kufuneka ifudunyezwe kwaye yomiswe, kungenjalo kulula ukuba neengxaki ezisemgangathweni ezifana nokuxhoma kunye namaqamza.
1. Iimpawu zobugcisa bezixhobo
Okokuqala, i-corrosiveness yamanzi inkulu kune-solvents, ngoko ke inkqubo yokucoca amanzi ejikelezayo yegumbi lokutshiza kufuneka yenziwe ngensimbi engenasici;okwesibini, imeko yokuhamba komoya yegumbi lokutshiza kufuneka ibe ntle, kwaye isantya somoya kufuneka silawulwe phakathi kwe-0.2 ~ 0.6m/s.
Okanye umthamo wokuhamba komoya ufikelela kwi-28,000m3 / h, onokudibana nayo kwigumbi eliqhelekileyo lepeyinti yokubhaka.Kwaye igumbi lokumisa ngenxa yobuninzi bomswakama emoyeni liya kubangela ukubola kwezixhobo, ngoko ke udonga lwegumbi lokumisa kufuneka lwenziwe ngezinto ezichasene ne-corrosion.
2. Inkqubo yokutshiza ngokuzenzekela
Elona qondo lobushushu legumbi lokutshiza lokutshiza ngepeyinti esekelwe emanzini yi-20 ~ 26 ℃, kunye nokufuma kwesalamane okufanelekileyo yi-60 ~ 75%.Ubushushu obuvumelekileyo bungama-20 ~ 32 ℃, kwaye ukufuma okuvumelekileyo kumalunga ne-50 ~ 80%.
Ngoko ke, kufuneka kubekho izixhobo ezifanelekileyo zokulawula ukushisa kunye nokufuma kwigumbi lokutshiza.Iqondo lobushushu kunye nokufuma kunokulawulwa kwigumbi lokutshiza lokupeyintwa kweemoto zasekhaya ebusika, kodwa iqondo lobushushu okanye ukufuma akunakuba lula ukulawulwa ehlotyeni, kuba umthamo wokupholisa mkhulu kakhulu ehlotyeni.
Kwiqondo lokushisa eliphezulu kunye neendawo zokufuma okuphezulu, kufuneka ufake i-air conditioner ephakathi kwigumbi lokutshiza ngaphambi kokusebenzisa amanziiingubo, yaye umoya obandayo kufuneka uhanjiswe ehlotyeni ukuze kuqinisekiswe umgangatho wokwakha wepeyinti esekwe emanzini.
3. Ezinye izixhobo
(1) Umpu wokutshiza wepeyinti osekelwe emanzini
Ngokuqhelekileyo, izibhamu zepeyinti ezisekelwe emanzini ezinomthamo ophezulu kunye nobuchwepheshe obuphantsi (HVLP) zisetyenziswa.Enye yeempawu ze-HVLP ngumthamo womoya ophezulu, odla ngokuba ngu-430 L / min, ngoko isantya sokumisa ipeyinti esekelwe emanzini inokunyuswa.
Izibhamu ze-HVLP ezinomthamo ophezulu womoya kodwa i-atomization ephantsi (15μm), xa isetyenziswe kwimozulu eyomileyo, iya koma ngokukhawuleza kwaye yenza ipeyinti esekelwe emanzini ihambe kakuhle.Ngoko ke, kuphela i-medium-pressure kunye ne-medium-volume gun ene-atomization ephezulu (1μpm) iya kunika umphumo ongcono jikelele.
Enyanisweni, isantya sokumisa ipeyinti esekelwe emanzini ayithethi nto kubanikazi beemoto, kwaye into abayibonayo kukulinganisa, ukukhanya kunye nombala wepeyinti.Ngoko ke, xa utshiza ipeyinti esekelwe kumanzi, akufanele ufune nje isantya, kodwa kufuneka uhlawule ingqwalasela engakumbi ekusebenzeni ngokubanzi kwepeyinti esekelwe emanzini, ukwenzela ukuba unelise umnini wemoto.
(2) Umpu ovuthela ipeyinti esekwe emanzini
Ezinye izitshizi zivakalelwa kukuba ipeyinti esekwe emanzini iyacotha ukomisa xa ithelekiswa nepeyinti esekwe kwinyibilikitho, ngakumbi ehlotyeni.Oku kungenxa yokuba iipeyinti ezisekwe kwi-solvent zibaleka ngokukhawuleza kwaye zome lula ehlotyeni, ngelixa zisekwe emanziniiinguboazivakali kangako kubushushu.Ixesha eliqhelekileyo lokumisa i-flash yepeyinti esekelwe emanzini (i-5-8 min) ngokwenene ingaphantsi kwepeyinti esekelwe kwi-solvent.
I-blow gun iyimfuneko ngokwenene, esisixhobo sokomisa ipeyinti esekwe emanzini ngesandla emva kokuba itshiziwe.Uninzi lwemipu yepeyinti esekwe ngamanzi kwimarike namhlanje yonyusa umthamo womoya ngesiphumo se-venturi.
(3) Izixhobo zokucoca umoya ezicinezelekileyo
Umoya ocinezelweyo ongahluzwanga uqulethe ioli, amanzi, uthuli kunye nezinye izinto ezingcolileyo, eziyingozi kakhulu kwimisebenzi yokutshiza ipeyinti esekelwe emanzini kwaye ingabangela iziphene ezahlukeneyo zomgangatho kwiifilimu zepeyinti, kunye nokuguquguquka okunokwenzeka koxinzelelo lomoya kunye nomthamo.Ukuphinda kusebenze ngenxa yeengxaki zomgangatho womoya ocinezelekileyo akunyusi nje iindleko zabasebenzi kunye nezinto eziphathekayo, kodwa kuthintele neminye imisebenzi.
Izilumkiso zokwakha kwiipeyinti ezisekelwe emanzini
1. I-solvent encinci ye-organic organic ivumela ipeyinti esekelwe emanzini ukuba ingaphenduli kunye ne-substrate, kwaye i-ejenti yayo yokuhlanjululwa kwamanzi inyusa ixesha elomileyo.Ukutshiza ngamanzi kubangela ukuba amanzi ehle ngokulula kwiindawo ezishinyeneyo zecala, ngoko ke akufuneki utshize kakhulu okokuqala!
2. Umlinganiselo wepeyinti esekelwe kumanzi ngu-10: 1, kwaye kuphela i-10g ye-agent ye-diluting agent yongezwa kwi-100g yepeyinti esekelwe emanzini inokuqinisekisa ukufakwa kwepeyinti eqinile yamanzi!
3. I-oyile kufuneka isuswe nge-oyile-based degreaser ngaphambi kokupeyinta, kwaye i-degreaser esekelwe emanzini kufuneka isetyenziswe ukusula kunye nokutshiza, oko kubaluleke kakhulu, kuba kunokunciphisa kakhulu amathuba okuba neengxaki!
4. I-funnel ekhethekileyo kunye nelaphu elikhethekileyo lothuli kufuneka lisetyenziswe ukucoca amanziiingubo.
Ixesha lokuposa: Aug-02-2022