Kukonzekera kwa Powder Coating Application Equipment

Pali njira zambiri zofunsira ufa wophimba zipangizo; ndipo alipo asanu ndi awiriral zida zokutira zopangira ufa posankha. Komabe, zinthu zomwe ziyenera kugwiritsidwa ntchito ziyenera kukhala zamtundu wogwirizana. Mwachitsanzo, ngati njira yogwiritsira ntchito ikuphwanyidwa madzi. ndiye zinthu ufa ❖ kuyanika ayenera kukhala fluidized bedi kalasi, Tikawonetsetsa, ngati njira ntchito ndi electrostatic kutsitsi, ndiye zakuthupi ufa ayenera electrostatic kutsitsi kalasi.

Zinthuzo zikasankhidwa bwino, ndiye kuti njira yogwiritsira ntchito imasankhidwa ndi gawo la mapangidwe ndi zolinga zopanga. Pali mitundu iwiri ya njira zogwiritsira ntchito. Izi zimasiyana mosiyanasiyana monga momwe amagwiritsidwira ntchito.

Mafomu awa ndi awa:

1. Fluidized bedi ntchito
2. Utsi ntchito.

FLUIDIZED BEDI

Njira imeneyi inali yoyamba kugwiritsidwa ntchito popaka zida zokutira ufa. Ikugwiritsidwabe ntchito masiku ano pazinthu zambiri pomwe makulidwe a filimu atachiritsidwa amakhala pamwamba pa 5.0 mils. Zinthu zodziwika bwino ndi mawaya, mabasi amagetsi, ndi zina.

The fluidized bedi njira ntchito angathe kuchitidwa m'njira ziwiri. Njira imodzi ndi . Iyi ndi njira yomwe imafuna kutentha kwa gawolo kuti ufa usungunuke ndikuutsatira. Mbali yotenthayi imayikidwa mu bedi lamadzimadzi la ufa kuti likhale lopaka. Kuchuluka kwa ufa womwe umagwiritsidwa ntchito ku gawolo ndi ntchito ya momwe gawolo likuwotchera komanso kutalika kwake pabedi. Ndizodziwikiratu kuti kuwongolera kwa makulidwe a kanema sikuli kofunikira kwambiri mukamagwiritsa ntchito njirayi.

Kuti muthe kuwongolera kwambiri makulidwe a kanema pagawolo, ndi bedi lokhala ndi fluidized, mfundo za electrostatics zimayambitsidwa. Monga momwe tawonetsera mkuyu 1, gawolo limatengedwa pamwamba pa bedi lamadzimadzi ndipo ufa umakopeka nawo. Gawoli tsopano silikufuna kutenthedwa musanayike pamwamba pa bedi. Ufa umakopeka ndi gawolo pogwiritsa ntchito mphamvu ya electrostatic pa tinthu ta ufa. Izi electrostatic charger amapangidwa mu electrostatic field kaya pamwamba kapena pa fluidized bed.

The makulidwe filimu pa mbali tsopano kulamulidwa osati kuchuluka kwa nthawi gawo ndi pabedi fluidized, komanso kuchuluka electrostatic mlandu ndi pa tinthu ufa. Kutentha kumagwiritsidwabe ntchito nthawi zina pothana ndi kasinthidwe kagawo komwe kungayambitse vuto la khola la Faraday.

Njirayi imagwiritsidwa ntchito popaka zida zamagetsi zamagetsi. Izi zimafuna zokutira zamphamvu za dielectric zokhala ndi kuwongolera kwa makulidwe a filimu kuti waya avulazidwe bwino.

Fluidized bedi Kumanga kumasiyana ndi wopanga aliyense; komabe, zigawo zikuluzikulu zomwezo zimagwiritsidwa ntchito pamapangidwe onse. Zigawo izi ndi hopper kapena thanki, plenum kapena mpweya chipinda, ndi fluidizing mbale. Zida zosiyanasiyana zimagwiritsidwa ntchito pachilichonse mwazinthu izi kutengera kapangidwe kake, wopanga, komanso kugwiritsa ntchito komaliza. Mwachitsanzo, mbale yamadzimadzi imatha kupangidwa ndi porous polyethylene, bolodi lamawu, pepala laluso, kapena zinthu zilizonse zaporous kapena kuphatikiza kwazinthu. Tanki ikhoza kupangidwa ndi zinthu zilizonse zomwe zingathe kuthandizira kulemera kwa ufa.

KUPAKA NTCHITO

Njira yogwiritsira ntchito zokutira ufa ndi zida zopopera za electrostatic zimagawika m'mitundu iwiri. Muzochitika zonsezi electrostatics ayenera kugwiritsidwa ntchito kukopa ufa ku part.Tere palibe makina kukopa kapena adhesion kugwira. Ufa ku gawo monga momwe amawonera mu machitidwe opopera amadzimadzi. Chifukwa chake, ufa uyenera kulipitsidwa, kapena gawo lomwe litenthedwa (kukopa kwamafuta), kuti likopeke ndi gawo lapansi. Fanizo labwino kwambiri lofotokozera izi ndikuti ngati mupaka baluni kutsitsi lanu, imamatira kukhoma chifukwa champhamvu yamagetsi. Baluni yemweyo sangamamatire pakhoma popanda chiwongolero chamagetsi. Kuyesera uku kuyenera kuchitika tsiku louma (osati lachinyontho). Mitundu iwiri ya zida zopangira zokutira za electrostatic spray powder ndi:

1. mfuti zopopera za corona.
2. Tribo adawombera mfuti

Kuchepetsa kwa amperage, kupalasa njinga zamakono kapena kugwiritsa ntchito kwapakatikati kumatalikitsa nthawi yotiyikira, popeza ndi ma ampere-seconds (coulombs) omwe amatulutsa electrodeposit.

Kugwiritsiridwa ntchito kwamakono kumachokera ku ma coulombs 15 pa gramu imodzi ya malaya omalizidwa kufika pa 150 coul/g. Pambuyo pakuchita opaleshoni koyambirira, kukana kwamagetsi kwa filimu yomwe yangoyikidwa kumene kumachepetsa kuthamanga kwapano, zomwe zimapangitsa ovuni.rall chofunikira cha awiri kapena anayi amp pa phazi lalikulu kwa mphindi imodzi kapena zitatu, kapena pakati pa ola limodzi ndi atatu kilowatt pa 100 mapazi lalikulu. Kupaka Nthawi zambiri kumachokera mphindi imodzi mpaka itatu. Kwa ntchito zina zapadera, monga mawaya. zitsulo zomangira, etc., ❖ kuyanika nthawi otsika masekondi asanu ndi lipoti.

Kufunika kwamagetsi kumatengera momwe utomoni womwazidwira mubafa ulili. Kuyikako nthawi zambiri kumayendetsedwa pakati pa 200 ndi 400volts, ngakhale kuti ena amakhala otsika mpaka 50 volts ndi ena okwera mpaka 1000 volts.

Kuchapira:

Zidutswa zomwe zakutidwa kumene, zikachotsedwa mubafa, zimanyamula madontho osambira komanso matope a utoto. Pafupi ndi chinthu chomwe chikukutidwa ndi utoto wochuluka wa zolimba za penti. Akuti gulu lagalimoto limatha kunyamula (kukoka) pafupifupi galoni imodzi yamadzi osamba. Pa 1wt% zosagwedezeka izi zimakhala zolimba pafupifupi 10 lb. Poganizira za kusamuka kwa zolimba kupita kumalo omwe akukutidwa, zolimba zofikira 1% zimayembekezeredwa pafupi ndi iwo. Motero, n’zachionekere kuti kuchira kosamba kwa penti kokwezedwa n’kofunikira, ndipo njira yopindulitsa yapezeka mwa “kutsuka ultrafiltrate.”

Ultrafiltration imagwiritsa ntchito nembanemba zomwe zimalola kuti madzi azidutsa ndi zinthu zomwe zasungunuka, monga zosungunulira, zosungunulira, mchere (zonyansa!), Ndi zina zotero. Magalani zana limodzi kapena kupitilira apo amadutsa mbali imodzi ya nembanembayo mopanikizika, pomwe galoni imodzi yamadzimadzi owoneka bwino imadutsa mu nembanemba. Madzi, otchedwa permeate kapena ultrafiltrate, amasonkhanitsidwa ndikugwiritsidwa ntchito ngati muzimutsuka madzimadzi (mkuyu 7). Makina ochapira a magawo atatu amabwezeretsa pafupifupi 85% ya zolimba za utoto zomwe zidachotsedwa posamba.

Kuchuluka kwa ultrafiltrate nthawi zina kumatayidwa, zomwe zingafunike kukwera magalimoto kupita kumalo otayako. Kuchuluka kwa zinyalalazi kumatha kuchepetsedwa ndi reverse osmosis.

Kuphika kapena Kuchiritsa:

Zofunikira za nthawi/kutentha kwa kuchiritsa zimatsatiridwa ndi utomoni wa utomoni ndipo ndizofanana ndi zomwe zimafunikira popaka utoto wamba kapena utoto wopopera - nthawi zambiri mphindi 5-25 pa kutentha kwa mpweya wa 250'F mpaka 400 ° F. Ma electrocoat owumitsa mpweya ali pamsika.

zida

Matanki opaka.

Mitundu iwiri ya tanki imagwiritsidwa ntchito:

1. Khoma la thanki limagwiritsidwa ntchito ngati counter-electrode.
2. Khoma la thanki limakutidwa ndi chotchinga chotchingira magetsi, pomwe ma electrode amalowetsedwa mu thanki ndikuyikidwa molingana ndi kukula kapena mawonekedwe a chinthu chogwirira ntchito. Ma electrode ali m'makhazikitsidwe ena ozunguliridwa ndi zipinda, mbali imodzi yomwe imapangidwa ndi nembanemba. Ma ion a counter "X" kapena "Y" (Table 1) amaunjikana m'zigawo za electrode ndi njira yotchedwa electrodialysis, ndipo amatayidwa kapena kugwiritsidwanso ntchito.

Chisokonezo:
Mapampu, machubu ojambulira, ma shaft a mizere ndi ma ejector-nozzle system omwe amatha kusuntha kapena kutembenuza voliyumu yonse yosambira mkati mwa mphindi 6 mpaka 30 amagwiritsidwa ntchito kuletsa utoto kuti usakhazikike mu thanki.

Fltration:
Monga lamulo, zosefera 5 mpaka 75 micron pore kukula zimagwiritsidwa ntchito kupititsa voliyumu yonse ya utoto kudzera muzosefera mu mphindi 30 mpaka 120. Zakudya za acidic zimapangidwira ndikutumizidwa kuzinthu zolimba za utoto kuyambira 40% mpaka 99+%. M'malo ena, chakudyacho chimayikidwa mu thanki mu mawonekedwe a zigawo ziwiri kapena kuposerapo, chigawo chimodzi kukhala utomoni, chigawo china kukhala pigment slurry, ndi zina zotero.

Njira Yochotsera Solubilizer:

Kuti kusamba kukhale kogwira ntchito, kuchotsa solubilizer yotsalira kumachitika kudzera mu electrodialysis, ion exchange, kapena dialysis njira.

Zida Zozizirira:

Pafupifupi mphamvu zonse zamagetsi zomwe zimagwiritsidwa ntchito zimasinthidwa kukhala kutentha. Zipangizo zoziziritsa kukhosi ziyenera kukhala zokwanira kuti madzi asatenthedwe, nthawi zambiri amakhala pakati pa 70°F ndi 90F, monga afotokozera opanga utoto.

Kuphika Kapena Kuchiritsa:

Mtundu wamba wa uvuni umagwiritsidwa ntchito. Kuthamanga kwa mpweya kupyola mu uvuni ndi kutsika pang'ono, chifukwa cha kuchepa kwa organic muchovala cha penti.

Gwero la Mphamvu:

Ma rectifiers omwe amapereka mwachindunji kuchepera kwa 10% ripple factor nthawi zambiri amatchulidwa. Zowongolera zosiyanasiyana zotulutsa magetsi zikugwiritsidwa ntchito, monga ma switch switch, ma induction regulators, saturable core reactors, ndi zina zotere. Magetsi amtundu wa 50 mpaka 500V nthawi zambiri amaperekedwa. Chofunikira pakali pano chikuwerengedwa kuchokera kulemera kwa zokutira kuti zigwiritsidwe ntchito mu nthawi yomwe ilipo.