Ukucushwa Kwensiza Yesicelo Sokumboza Impushana

Ziningi izindlela zokufaka isicelo i-powder coating izinto zokwakha; futhi kukhona eziyisikhombisaral imishini yokufaka impuphu yokufaka isicelo sokuzikhethela. Kodwa-ke, okokusebenza okufanele kusetshenziswe kufanele kube uhlobo oluhambisanayo. Isibonelo, uma indlela yokufaka isicelo i-fluidized bed. ke impahla powder enamathela kumele kube fluidized umbhede grade, Ngokuphambene, uma indlela isicelo isifutho electrostatic, ke impahla powder kumele kube electrostatic spray grade.

Uma impahla ikhethwe kahle, indlela yokufaka isicelo ikhethwa ngokwengxenye yokuklama kanye nezinhloso zokukhiqiza. Kunezinhlobo ezimbili zezindlela zokufaka isicelo. Lezi ziyahlukahluka njengoba zivumelana nezinhlelo zokusebenza.

Lawa mafomu yilawa:

1. Isicelo sombhede omanzi
2. Faka isicelo.

UMBHEDE OFLUIDIZED

Le ndlela yokufaka isicelo kwaba ngeyokuqala esetshenziswa ukufaka izinto zokumboza ngempushana. Isasetshenziswa nanamuhla ezinhlelweni eziningi lapho ukushuba kwefilimu eselashiwe kungaphezu kuka-5.0 mils. Izinto ezijwayelekile yimikhiqizo yocingo, amabhasi kagesi, njll.

Indlela yokusebenzisa umbhede we-fluidized ingenziwa ngezindlela ezimbili. Enye indlela yi-. Lena inqubo edinga ukushisa kuqala ingxenye ukuze i-powder izoncibilika futhi ibambelele kuyo. Ingxenye eshisayo ifakwa embhedeni omanzi wempushana ukuze kuhlanganiswe. Inani lempushana elisetshenziswa engxenyeni liwumsebenzi wokuthi ingxenye ishisa kangakanani nokuthi ide kangakanani embhedeni. Kusobala ukuthi ukulawulwa kokuqina kwefilimu akuyona into ebaluleke kakhulu lapho kusetshenziswa le ndlela.

Ukuze uthole ukulawula okwengeziwe kogqinsi lwefilimu engxenyeni, ngohlelo lombhede olunamanzi, izimiso ze-electrostatics zethulwa. Njengoba kuboniswe ku-Fig. 1, ingxenye ihanjiswa ngaphezu kombhede omanzi futhi impushana ikhangwa kuyo. Ingxenye manje ayidingi ukushiswa kwangaphambili ngaphambi kokubekwa ngaphezu kombhede. Impushana ikhangwa engxenyeni ngokushajwa kwe-electrostatic ezinhlayiyeni eziyimpushana. Le shaji ye-electrostatic ithuthukiswa endaweni ye-electrostatic noma ngaphezulu noma embhedeni omanzi.

Ukujiya kwefilimu engxenyeni manje akulawulwa nje kuphela inani lesikhathi ingxenye esembhedeni omanzi, kodwa futhi nokuthi ingakanani imali eshaja i-electrostatic ezinhlayiyeni eziyimpushana. Ukushisa kusasetshenziswa ngezinye izikhathi kule nqubo ukuze kunqobe ukumiswa kwengxenye okungase kubangele izinkinga zekheji le-Faraday.

Le ndlela yokufaka isicelo isetshenziselwa ukumboza ama-armatures emoto kagesi. Lezi zidinga amandla aphezulu e-dielectric enokulawula ukushuba kwefilimu ukuvumela ucingo ukuthi lungamamele kahle.

Fluidized bed Ukwakhiwa kuyehluka kumkhiqizi ngamunye; nokho, izingxenye ezifanayo eziyisisekelo zisetshenziswa kuyo yonke imiklamo. Lezi zingxenye ziyi-hopper noma ithangi, i-plenum noma i-air chamber, kanye nepuleti elimanzi. Kusetshenziswa izinto ezihlukene kungxenye ngayinye yalezi zincike ekwakhiweni, kumkhiqizi, nasekusetshenzisweni kokugcina. Isibonelo, ipuleti elimanzi lingenziwa nge-polyethylene enezimbotshana, ibhodi lomsindo, iphepha lobuciko, nanoma iyiphi into enembobo noma inhlanganisela yezinto. Ithangi lingenziwa nganoma iyiphi impahla engasekela isisindo sempushana.

ISICELO SOKUFUTHA

Indlela yokusebenzisa i-powder coating nge-electrostatic spray equipment ihlukaniswe yaba izinhlobo ezimbili. Kuzo zombili izimo, i-electrostatics kufanele isetshenziselwe ukuheha impushana engxenyeni.I-Tere ayikho ukukhanga komshini noma ukunamathela ukubamba. Impushana engxenyeni njengoba ibonakala ezinhlelweni zokufutha eziwuketshezi. Ngakho-ke, i-powder kumele ikhokhiswe, noma ingxenye eshisayo (ukukhanga okushisayo), ukukhangwa ku-substrate. Isifaniso esihle kakhulu sokuchaza lokhu ukuthi uma uhlikihla ibhaluni ezinweleni zakho, lizonamathela odongeni ngenxa ye-electrostatic charge. Ibhaluni elifanayo ngeke linamathele odongeni ngaphandle kokushajwa kwe-electrostatic. Lokhu kuhlolwa kufanele kwenziwe ngosuku olomile (hhayi oluswakeme). Izinhlobo ezimbili zemishini yokufaka i-electrostatic spray powder coating yilezi:

1. corona charged spray guns.
2. U-Tribo ukhokhise izibhamu ze-spray

Umkhawulo we-amperage, ukuhamba ngebhayisikili kwamanje noma ukusetshenziswa kwamanje okuphakathi kwelula isikhathi sokumboza esidingekayo, njengoba kuyimizuzwana ye-ampere (coulombs) esetshenziswayo ekhiqiza ideposit kagesi.

Ukusetshenziswa Kwamanje kusuka ku-coulombs angaba ngu-15 igremu ngalinye lejazi eliqediwe kufika ku-150 coul/g. Ngemuva kokuhlinzwa kokuqala kwe-amperage, ukumelana nogesi okuphezulu kwefilimu esanda kufakwa kunciphisa ukugeleza kwamanje, okuholela kuhhavini.rall imfuneko yama-amp amabili kuya kwamane ngonyawo-skwele ngalunye umzuzu owodwa kuya kwemithathu, noma phakathi kwehora elilodwa namathathu kilowatt ngamamitha-skwele ayi-100. Isikhathi sokuhlanganisa ngokuvamile sisukela kumzuzu owodwa kuya kwemithathu. Ngomsebenzi othile okhethekile, njengezintambo. amabhande ensimbi, njll., izikhathi zokumboza eziphansi njengemizuzwana eyisithupha zibikwa.

Isidingo sikagesi sinqunywa kakhulu uhlobo lwe-resin ehlakazekile kubhavu. Ukufakwa kuvame ukusetshenziswa phakathi kuka-200 no-400volts, nakuba okunye kubikwa ukuthi kusetshenziswa ama-volts aphansi angu-50 kanti amanye afinyelela ku-1000 volts.

Ukuhlanza:

Izingcezu ezisanda kugqunywa, uma ziphakanyiswa kubhavu, zithwala amaconsi okugeza ngisho namachibi opende. Inqwaba yezinto eziqinile zikapende ikhona eduze nendawo yokusebenza egcotshwayo. Kulinganiselwa ukuthi indikimba yezimoto ingase ithwale (ikhiphe) cishe ilitha elingu-1 lokugeza. Ku-10wt% okungaguquguquki lokhu cishe ku-1 lb. Uma kucatshangelwa ukufuduka kwezinto eziqinile ziye ezindaweni ezimboziwe, ukugxila kokuqinile okungafika ku-35% kulindelekile endaweni yazo. Ngakho-ke, kusobala ukuthi ukubuyiswa kwebhavu likapende eliphakanyisiwe liyadingeka, futhi indlela ezuzisa kakhulu iye yatholakala ngendlela “yokugeza okucwebezelayo.”

I-Ultrafiltration isebenzisa ulwelwesi oluvumela ukudlula kwamanzi nezinto ezincibilike ngempela, njengezincibilikisi, izincibilikisi, usawoti (ukungcola!), njll. Ama-resin kapende ahlakaziwe, i-pigments, njll. kugcinwa ulwelwesi. Amalitha ayikhulu noma ngaphezulu okugeza adlula ohlangothini olulodwa lolwelwesi ngaphansi kwengcindezi, kuyilapho ilitha elilodwa loketshezi olunamanzi ahlanzekile ludlula kulwelwesi. Uketshezi, olubizwa nge-permeate noma i-ultrafiltrate, luyaqoqwa futhi lusetshenziswe njengoketshezi lokuhlanza (Fig. 7). Isistimu yokuwasha yezigaba ezintathu ibuyisela cishe u-85% wezinsimbi zikapende ezisuswe kubhavu.

Amanani e-ultrafiltrate kwesinye isikhathi ayalahlwa, okungase kudinge ukuthuthwa ngamaloli ukuyolahla iziza. Umthamo wale mfucumfucu ungancishiswa nge-osmosis ehlehlayo.

Bhaka noma Ukwelapha:

Izidingo zesikhathi/izinga lokushisa lokwelapha zinqunywa uhlelo lwe-resin futhi ziyefana nalezo ezidingekayo kumapende ajwayelekile wokucwilisa noma wokufutha - ngokuvamile imizuzu emi-5-25 ekushiseni komoya okungu-250'F kuya ku-400°F. Ama-electrocoat okomisa umoya asemakethe.

imishini

Amathangi okugcoba.

Kusetshenziswa izinhlobo ezimbili zamathangi:

1. Udonga lwethangi lusetshenziswa njenge-counter-electrode.
2. Udonga lwethangi lufakwe ijazi elivikela ugesi, kuyilapho ama-counter-electrode ashuthekwa ethangini abese emiswa ngokosayizi noma ukuma kwesiqephu somsebenzi. Ama-electrode akwezinye izinto ezifakwayo ezizungezwe izingxenye, uhlangothi olulodwa lwazo olwakhiwe ulwelwesi. Ama-ion ekhawunta “X” noma”Y”(Ithebula 1) anqwabelana ezingxenyeni zama-electrode ngenqubo ebizwa nge-electrodialysis, futhi ayalahlwa noma aphinde asetshenziswe.

Ukuyaluza:
Amaphampu, amashubhu alungiswayo, ama-shaft olayini kanye nesistimu yokukhipha umlomo wombhobho okwazi ukunyakazisa noma ukuguqula umthamo wokugeza wonke emizuzwini eyi-6 ukuya kwengama-30 asetshenziselwa ukuvimbela upende ukuthi ungahlali ethangini.

I-Fltration:
Njengomthetho, izihlungi ze-5 kuya ku-75 micron usayizi we-pore zisetshenziselwa ukudlulisa yonke ivolumu yopende ngesihlungi ngemizuzu engama-30 kuya kweyi-120. Izinto eziphakelayo ezine-asidi ziyakhiqizwa futhi zithunyelwe ezindaweni eziqinile zikapende ezisuka ku-40% ziye ku-99+%. Kokunye ukufakwa, okuphakelayo kulinganiswa ethangini ngendlela yezingxenye ezimbili noma ngaphezulu, ingxenye eyodwa kube inhlaka, enye ingxenye iwudaka lwe-pigment, njll.

Indlela Yokususa I-Solubilizer:

Ukugcina ukugeza kusesimweni sokusebenza, ukususwa kwe-solubilizer esele kwenziwa ngokusebenzisa i-electrodialysis, i-ion exchange, noma izindlela zokudayela.

Izisetshenziswa zokupholisa:

Cishe wonke amandla kagesi asetshenziswayo aguqulwa abe ukushisa. Izinto zokupholisa kufanele zanele ukugcina izinga lokushisa lokugeza elifunekayo, ngokuvamile eliphakathi kuka-70°F no-90F, njengoba kucaciswe abahlinzeki bakapende.

Bhaka Noma Ukwelapha:

Kusetshenziswa uhlobo olujwayelekile lukahhavini. Isivinini somoya kuhhavini siphansi ngokuqhathaniswa, ngenxa yenani elincane kakhulu lokuguquguquka kwezinto eziphilayo ejazini likapende.

Umthombo wamandla:

Izilungisi eziletha amandla akhona e-ripple factor engaphansi kuka-10% ngokuvamile ziyacaciswa. Izilawuli ezihlukahlukene zamandla kagesi aphumayo ziyasetshenziswa, njengamaswishi kampompi, izilawuli zokungeniswa, ama-saturable core reactor, njll. Ama-voltage ebangeni elingu-50 kuya ku-500V ngokuvamile ahlinzekwa. Imfuneko yamanje ibalwa kusukela esisindweni sokumboza okufanele sisetshenziswe ngesikhathi esitholakalayo.