I-Faraday Cage In Powder Coating application

Ake siqale ukubheka ukuthi kwenzekani esikhaleni phakathi kwesibhamu sokufafaza kanye nengxenye ngesikhathi se-electrostatic i-powder coating inqubo yokufaka isicelo. Emfanekisweni 1, amandla kagesi aphezulu asetshenziswa ekugcineni kwe-electrode yokushaja yesibhamu adala inkambu kagesi (eboniswa imigqa ebomvu) phakathi kwesibhamu nengxenye ephansi. Lokhu kuletha ukuthuthukiswa kokukhishwa kwe-corona. Inani elikhulu lama-ion amahhala akhiqizwa ukukhishwa kwe-corona ligcwalisa isikhala phakathi kwesibhamu nengxenye. Amanye ama-ion athathwa yizinhlayiya zempushana, okuholela ekutheni izinhlayiya zishajwe. Kodwa-ke, ama-ion amaningi ahlala ekhululekile futhi ehamba ngemigqa yenkundla kagesi eya engxenyeni yensimbi ephansi, exutshwa nezinhlayiya zempushana eziqhutshwa umfudlana womoya.

Njengoba kushiwo ngaphambili, ifu lezinhlayiya zempuphu eshajiwe kanye nama-ion amahhala adalwe esikhaleni phakathi kwesibhamu sokufafaza nengxenye inamandla athile okunqwabelana okubizwa ngokuthi yi-space charge. Njengefu elidumayo elidala inkambu kagesi phakathi kwawo nomhlaba (okuholela ekuthuthukisweni kombani), ifu lezinhlayiya zempushana ezishajwayo nama-ion amahhala adala inkambu kagesi phakathi kwawo nengxenye ephansi. Ngakho-ke, kusistimu evamile yokushaja i-corona, inkambu kagesi eseduze nendawo yengxenye ihlanganisa izinkambu ezidalwe i-electrode yokushaja yesibhamu kanye neshaja yesikhala. Ukuhlanganiswa kwalezi zinkambu ezimbili kusiza ukufakwa kwe-powder ku-substrate ephansi, okuholela ekusebenzeni kahle kokudlulisa okuphezulu.Imiphumela emihle yamasimu kagesi aqinile adalwe yizinhlelo ezijwayelekile zokushaja i-corona ibonakala kakhulu lapho umboza izingxenye ezinezindawo ezinkulu, eziyisicaba ngesivinini esikhulu sokuthutha. Ngeshwa, izinkambu zikagesi ezinamandla zamasistimu wokushaja we-corona zingaba nemiphumela engemihle kwezinye izinhlelo zokusebenza. Isibonelo, lapho izingxenye zokumboza ezinama-recesses ajulile namashaneli, umuntu uhlangabezana nomphumela we-cage we-Faraday (bheka Umfanekiso 2) .Uma ingxenye inekhefu noma umzila endaweni yayo, inkambu kagesi izolandela indlela yokumelana okuphansi kakhulu ukuya emhlabathini ( okungukuthi imiphetho yekhefu elinjalo). Ngakho-ke, ngobuningi benkambu kagesi (kusuka kokubili isibhamu nendawo yokushaja) igxile emaphethelweni esiteshi, ukufakwa kwempushana kuzothuthukiswa kakhulu kulezi zindawo futhi ungqimba lwe-powder coating luzokhula ngokushesha okukhulu.

Ngeshwa, imiphumela emibi emibili izohambisana nale nqubo. Okokuqala, izinhlayiya ezimbalwa zinethuba lokungena ngaphakathi kwe-recess kusukela izinhlayiya zempushana "ziphushwa" ngamandla kagesi emaphethelweni ekheji ye-Faraday. Okwesibili, ama-ion amahhala akhiqizwa ukukhishwa kwe-corona azolandela imigqa yensimu ebheke emaphethelweni, agcwalise ngokushesha i-coating ekhona ngokushaja okwengeziwe, futhi aholele ekuthuthukisweni okusheshayo kwe-ionization yangemuva. amandla futhi ifakwe ku-substrate, kufanele kube nenkambu kagesi eqinile ngokwanele ukusiza kule nqubo. Emfanekisweni wesi-2, kusobala ukuthi insimu edalwe yi-electrode yesibhamu, noma inkambu yenkokhelo yesikhala phakathi kwesibhamu nengxenye ingena ngaphakathi kwekheji le-Faraday. Ngakho-ke, okuwukuphela komthombo wosizo ekuhlanganiseni ingaphakathi lezindawo ezihlehlisiwe inkambu edalwe ukushajwa kwesikhala kwezinhlayiya zempushana ezilethwa ukusakazwa komoya ngaphakathi kwe-recess (bheka Umfanekiso 3).Uma isiteshi noma ikhefu lincane, buyisela i-ionization ngokushesha. ukuthuthukisa emaphethelweni ayo kuzokhiqiza ama-ion amahle azonciphisa ukukhokhiswa kwezinhlayiya zempushana ezizama ukudlula phakathi kwamaphethelo ekheji e-Faraday ukuze zibeke ngaphakathi kwesiteshi. izinhlayiya ze-powder ezilethwe ngaphakathi kwesiteshi ngokusakazwa komoya ngeke zanele ukudala amandla anamandla kagesi anele ukuze anqobe isiphithiphithi somoya futhi abeke impushana.

Ngakho-ke, ukucushwa kwensimu kagesi kanye nokugxila kwayo emaphethelweni ezindawo zekheji zaseFaraday akuyona inkinga kuphela lapho umboza izindawo ezihlehlisiwe. Ukube bekunjalo bekuyodingeka kuphela ukufafaza ikhefu isikhathi eside ngokwanele. Singalindela ukuthi uma imiphetho isimbozwe ungqimba oluwugqinsi lwempushana, ezinye izinhlayiya ngeke zikwazi ukubeka lapho, okuwukuphela kwendawo enengqondo lapho impushana ingena khona kuba ingaphakathi lekhefu. Ngeshwa lokhu akwenzeki ngenxa, ngokwengxenye, ukusekela ionization. Kunezibonelo eziningi zezindawo ze-cage ze-Faraday ezingakwazi ukumbozwa kungakhathaliseki ukuthi i-powder ifafazwa isikhathi esingakanani.Kwezinye izimo, lokhu kwenzeka ngenxa yejometri ye-recess kanye nezinkinga zokuthuthumela komoya, kodwa izikhathi eziningi kungenxa ye-ionization yangemuva.