Izindlela Zokufaka I-Powder - ELECTROSTATIC SPRAYING

Ukufafaza nge-electrostatic kuyindlela esetshenziswa kakhulu yokufaka isicelo i-powder coating izinto zokwakha. Ukukhula kwawo kukhuphuka ngezinga elimangalisayo. Ithuthukiswe maphakathi nawo-60's, le nqubo iyindlela ephumelela kakhulu yokufaka ama-coatings futhi iqede ngesikhathi esifushane. Kodwa-ke, ukwamukelwa kwe-powder coating ku-general ekuqaleni yayihamba kancane kakhulu e-US. EYurophu, umqondo we-electrostatic powder spray wamukelwa kalula, futhi ubuchwepheshe buhamba ngokushesha kakhulu kunakwenye indawo emhlabeni. Kodwa-ke, intuthuko eminingi yenziwa kuzo zombili izinto eziyimpuphu kanye nemishini yokufaka isicelo etholakala kubakhiqizi. Lezi zakhi zofuzoralkubandakanyeke izinkinga ezihlobene ne-electrostatic powder spray coating, kanye nokuthuthukisa ukusebenza kwezingxenye zesistimu. Ngenxa yalokho, kunezinhlelo eziningi ezihlukahlukene ze-electrostatic powder spray coatings systems ezitholakalayo namuhla.
Ukufaka izinto zokumboza nge-powder ngenqubo ye-electrostatic powder spray, izingcezu ezinhlanu eziyisisekelo zemishini ziyadingeka:

• Iyunithi ye-powder feeder;
• Isibhamu se-electrostatic powder spray, noma idivayisi yokusabalalisa efanayo;
• Umthombo we-electrostatic voltage;
• Iyunithi yokubuyiswa kwempuphu; 
• Idokodo lokufutha

Kukhona ezinye izisetshenziswa zokuthuthukisa ukusebenza kwalezi zingxenye eziyisisekelo. Ekusetshenzisweni kwesistimu yesifutho sempushana ye-electrostatic, impushana iyasenwa, noma imponswe, isuka kuyunithi yokuphakelayo ngepayipi lokuphakelayo okuyimpushana kuya ku(izi)zibhamu zokufutha.Izibhamu zokufutha ziqondisa impushana engxenyeni ngendlela yefu elihlakazekile. Amandla apheqayo anikezwa ngomoya othutha impushana usuka kuyunithi yokuphakelayo uye kusibhamu sokufuthwa, kanye neshajethi ye-electrostatic enikezwa impushana esibhanyini. I-electrostatic voltage inikezwa kusibhamu sokufuthwa ngomthombo oklanyelwe ukudlulisa amandla kagesi ane-voltage ephezulu, ane-amperage ephansi ku-electrode exhunywe kusibhamu sesifutho. Njengoba ifu lempushana elisakazekile, elishajwa ngogesi lisondela engxenyeni ephansi, kwakhiwa indawo kagesi ehehayo, edonsa izinhlayiya zempushana engxenyeni bese kwakheka ungqimba lwempushana. I-overspray-noma impushana enganamatheli engxenyeni-iyaqoqwa ukuze isetshenziswe kabusha noma ilahlwe. Eyunithi yokuqoqa, impushana ihlukaniswa nokugeleza komoya okudlulisayo. Impushana eqoqwe bese igaywa kabusha ngokuzenzakalelayo noma ngesandla ibuyiselwe kuyunithi yokuphakelayo ukuze ifafazwe kabusha. Umoya udluliswa ngomshini wemidiya wokuhlunga uye ku-plenum yomoya ohlanzekile bese kuthi ngesihlungi sokugcina, noma esiphelele, sibuyele endaweni yesitshalo njengomoya ohlanzekile. Ingxenye eboshiwe isuke ithwalwa isuka endaweni yokufaka isicelo bese ifakwa ekushiseni, okuholela ekuphumeni nasekuphulukisweni kwento eyimpushana.

Inzuzo Yezomnotho

Nge-electrostatic powder spray, kufika ku-99% we powder overspray angatholwa futhi afakwe kabusha. Ukulahlekelwa kwezinto ezibonakalayo ngempushana kuncane kakhulu uma kuqhathaniswa nezinhlelo zokumboza uketshezi.
Ngaphezu kwalokho, ezimweni eziningi i-powder inikeza ukumbozwa kwejazi elilodwa ngaphandle kokugijima kanye nama-sags engxenyeni eqediwe. Ukusebenzisa a okokuqala Ijazi ngaphambi kwejazi lokuqeda akudingekile, kunciphisa isikhathi nomsebenzi odingwa yizinhlelo ze-multicoat liquid.
Ukuncipha kwezindleko zikaphethiloli ekwelapheni impushana kuvame ukuvela ekusebenziseni ohhavini abancane, izikhathi ezimfishane zikahhavini futhi, kwezinye izimo, amazinga okushisa ehhavini aphansi. Asikho isidingo sokushisa noma ukuthukuthelisa izimonyo zedokodo ngoba umoya ubuyiselwa endaweni yesitshalo njengomoya ohlanzekile.
Okunye ukonga izindleko, okuhlanganisa nezindleko eziphansi zokuhlanza, kungatholwa ngempushana. Asikho isidingo sokuxuba, ukubuyisela, nokulahla izincibilikisi lapho umbozwa ngempushana. Imvamisa, azikho i-solvent noma amakhemikhali asetshenziswayo ekuhlanzeni noma ngabe imishini yokufaka impushana noma amadokodo okufutha. Njengoba izinto zokuhlanza umoya ne-vacuum ziyizakhi zofuzorally konke okudingekayo ekuhlanzeni nge-powder, umsebenzi kanye nezinto zokuhlanza kuyancishiswa futhi ukulahlwa kodaka lukapende oluyingozi kuyaqedwa.
Iphesenti elikhulu lezinto zokumboza eziwuketshezi liqukethe isincibilikisi esinobuthi kwesinye isikhathi nesivuthayo esilahlekayo ekusetshenzisweni kwesicelo. Indawo yokugcina impahla, kanye nezindleko zokuphatha izincibilikisi kuvame ukumba eqolo. Ngempushana, izindleko ezibandakanya okokusebenza kokulawula ukunukubezeka, isikhathi sokucisha umlilo, nokulahlwa kwemfucuza encibilikayo kucishe kuqedwe.
Ukuqeda ukusetshenziswa kwe-solvent nakho kunganciphisa izidingo zomshwalense womlilo kanye nezilinganiso ezikhokhelwayo ukuze kugcinwe ukuvikelwa komshwalense womlilo. Ekugcineni izindleko ezisetshenzisiwe ngemitha ngayinye yesikwele sefilimu zilingana, noma ziphansi kunezindleko zokumboza uketshezi ezimeni eziningi.

Ukusebenziseka kalula

Izici zokuqeda ezingaguquguquki kanye "nokusonga" kwe-electrostatic okutholwa ekusetshenzisweni kwesifutho sempushana kusiza ukunciphisa isidingo sabaqhubi abanekhono eliphezulu. Ngaphezu kwalokho, akukho ibhalansi ye-viscosity okufanele igcinwe lapho umbozwa nge-powder. Izinto zempushana zifika "zilungele ukufafazwa" kumkhiqizi. Asikho isikhathi se-flash-off esidingekayo nge-powder. Ingxenye eboshiwe ingathuthwa ngokuqondile endaweni yesifutho iye kuhhavini ukuze ilashwe. Amanani okwenqaba angancishiswa, njengoba kungase kube nezindleko ezihilelekile ekusebenzeni kabusha izingxenye ezinqatshiwe. Ukugijima kanye nama-sags kuvame ukuqedwa ngenqubo yokumboza impushana.
Ukugqoka okunganele noma okungalungile kungaphephuka engxenyeni (ngaphambi kokuphulukiswa kokushisa) futhi kufakwe kabusha. Lokhu kungaqeda umsebenzi kanye nezindleko ezihilelekile ekuhlubeni, ekuphatheni kabusha, ekuhlanganiseni, nasekubuyiseleni izingxenye ezinqatshiwe. Ingasebenzisa izithuthi zezibhamu ezizenzakalelayo, izindlela zokujikijela, amarobhothi, nokuma kwezibhamu ezimile. Isikhathi esiphelele sokukhiqiza singancishiswa, noma umthamo wokukhiqiza unyuswe, nge-powder spray coating. Ukuqeda izinyathelo ezihlukahlukene ezidingekayo ngenqubo yokwemboza uketshezi kungabangela umugqa wokuqedela osebenza kahle.