Kumntu ofundayoUkuveliswa kwePCB, ushicilelo lokudlulisa i-thermal kunye nokuvezwa kwe-UV zimbini iindlela ezisetyenziswa ngokuqhelekileyo.
Isixhobo ekufuneka sisetyenziswe kwindlela yokutshintshwa kwe-thermal zezi: i-copper clad laminate, iprinta yelaser (mayibe yiprinta yelaser, iprinta ye-inkjet, iprinta yedot matrix kunye nezinye iiprinta azivumelekanga), iphepha lokutshintshwa kwe-thermal (linokutshintshwa lifakwe endaweni yalo. iphepha elixhasayo emva kwesincamathelisi), kodwa iphepha eliqhelekileyo le-A4 alinakusetyenziswa), umatshini wokuhambisa i-thermal (unokutshintshwa yintsimbi yombane, i-laminator yesithombe), ipeni yokumakisha esekwe kwi-oyile (kufuneka ibe yi-oyile-based marker pen, inki yayo ayinamanzi, kunye neepeni ze-inki ezisekelwe emanzini azivumelekanga) , Iikhemikhali ezitshabalalisayo (ngokuqhelekileyo zisebenzisa i-ferric chloride okanye i-ammonium persulfate), i-bench drill, i-sandpaper yamanzi (ingcono kakhulu).
Indlela yokusebenza ethile yile ilandelayo:
Gcoba umphezulu we-copper-clad yebhodi ene-copper-clad nge-sandpaper yamanzi, kwaye ugaye i-oxide layer, uze uhlambulule umgubo wobhedu oveliswa ngokusila ngamanzi, kwaye uyomise.
Sebenzisa umshicileli welaser ukuprinta umfanekiso wesipili esisekhohlo nasekunene sefayili ezotyiweyo yePCB kwicala eligudileyo lephepha lokudlulisa thermal, kwaye iingcingo zimnyama kwaye ezinye iindawo azinanto.
Beka iphepha lokutshintshela i-thermal kumphezulu we-copper owenziwe ngebhodi (icala lokushicilela lijongene necala le-copper, ukwenzela ukuba ibhodi yobhedu igubungele ngokupheleleyo indawo yokushicilela), kwaye ulungise iphepha lokutshintshwa kwe-thermal ukuqinisekisa ukuba iphepha liyakwenza. hayi iNtshukumo iyakwenzeka.
Umatshini wokudlulisa i-thermal uvuliwe kwaye ufudunyezwe.Emva kokuba ukufudumala kugqitywe, faka i-laminate yobhedu ehlanganiswe nephepha lokutshintshwa kwe-thermal kwi-roller ye-rubber yomatshini wokudlulisa i-thermal, kwaye uphinde udlulise ukuhanjiswa kwe-3 ukuya kwamaxesha e-10 (kuxhomekeke ekusebenzeni komatshini, ukutshintshwa kwe-thermal ethile. oomatshini bangasetyenziswa emva kokudlula kwe-1, kwaye abanye bafuna ukupasa kwe-10).Ukuba usebenzisa intsimbi yombane ukudlulisa, nceda ulungise intsimbi yombane kwiqondo lokushisa eliphezulu, kwaye ngokuphindaphindiweyo u-irone ibhodi ye-copper-clad apho iphepha lokutshintshwa kwe-thermal ligxininiswe, kunye nentsimbi ngokulinganayo ukuze uqinisekise ukuba yonke inxalenye iya kucinezelwa. intsimbi.I-laminate ye-copper clad ishushu kakhulu kwaye ayinakuchukunyiswa ixesha elide ngaphambi kokuphela.
Lindela i-laminate ye-copper clad ukuze iphole ngokwemvelo, kwaye xa ipholile ukuya kwindawo apho ingasatshisi, khupha ngokucophelela iphepha lokudlulisa i-thermal.Qaphela ukuba kufuneka ulinde ukupholisa okupheleleyo ngaphambi kokukrazula, ngaphandle koko ifilimu yeplastiki kwiphepha lokutshintshwa kwe-thermal inokubambelela kwibhodi yobhedu, okukhokelela ekungaphumeleli kwemveliso.
Jonga ukuba ugqithiselo luphumelele na.Ukuba eminye imikhondo ayiphelelanga, ungasebenzisa isiphawuli esekwe kwi-oyile ukuyigqiba.Ngeli xesha, amanqaku ashiywe yi-oil-based marker pen kwi-copper-clad board aya kuhlala emva kokubola.Ukuba ufuna ukwenza isignesha ebhalwe ngesandla kwibhodi yesiphaluka, ungayibhala ngokuthe ngqo kwibhodi yobhedu ene-oil-based marker ngeli xesha.Ngeli xesha, umngxuma omncinci unokubethelwa kumda we-PCB kwaye intambo inokubotshwa ukuququzelela i-corrosion kwisinyathelo esilandelayo.
Beka umlinganiselo ofanelekileyo weyeza elitshabalalisayo (thatha i-ferric chloride njengomzekelo) kwisitya seplastiki, kwaye ugalele amanzi atshisayo ukunyibilikisa iyeza (ungafaki amanzi amaninzi, anokuchithwa ngokupheleleyo, amanzi amaninzi aya kunciphisa ukuxininisa) , kwaye emva koko udlulisele kwi-Soak i-laminate ye-copper eprintiweyo kwisisombululo seekhemikhali ezonakalisayo, kunye necala le-copper eligubungele phezulu, ukuqinisekisa ukuba isisombululo esihlwabusayo sifakwe ngokupheleleyo kwi-laminate yobhedu, kwaye emva koko uqhubeke uvuthulula isikhongozelo esinesisombululo esonakalisayo. , okanye uvuthulule i-laminate yobhedu.Ewe, impompo yomatshini wokutya iya kushukumisa ulwelo lokutya.Ngethuba lenkqubo ye-corrosion, nceda uhlale ubeke ingqalelo kwiinguqu ze-laminate ye-copper clad.Ukuba ifilimu yekhabhoni egqithiselweyo okanye i-inki ebhalwe ngusiba yokumakisha iyawa, nceda unqande umhlwa ngoko nangoko kwaye ukhuphe i-laminate ye-copper clad kwaye uyihlambulule, uze ugcwalise umgca owileyo ngosiba olunamafutha kwakhona.Ukulungiswa kwakhona.Emva kokuba lonke ubhedu oluveziweyo kwibhodi enentsimbi yobhedu ludliwe, susa ibhodi enentsimbi yobhedu ngoko nangoko, yihlambe ngamanzi etephu, emva koko usebenzise i-sandpaper yamanzi ukosula i-printer toner kwibhodi enentsimbi yobhedu ngelixa ucoca.
Emva kokumisa, grumba umngxuma ngebhentshi yokubhola kwaye ilungele ukusetyenziswa.
Ukwenza i-PCB ngokuvezwa kwe-UV, kufuneka usebenzise ezi zixhobo:
Umshicileli we-Inkjet okanye umshicileli we-laser (ezinye iintlobo zabashicileli azinakusetyenziswa), i-copper clad laminate, ifilimu ye-photosensitive okanye ioli ye-photosensitive (ekhoyo kwi-intanethi), ifilimu yokuprinta okanye iphepha le-sulfuric acid (ifilimu inconywa kwiiprinta ze-laser), ipleyiti yeglasi okanye iplexiglass plate ( Indawo kufuneka ibe nkulu kunebhodi yesekethe ekufuneka yenziwe), isibane se-ultraviolet (ungasebenzisa iityhubhu zesibane ze-ultraviolet zokubulala iintsholongwane, okanye izibane ze-ultraviolet ezisetyenziswa kwiisaluni zezikhonkwane), i-sodium hydroxide (ekwabizwa ngokuba yi-“caustic soda”, enokuthengwa kuyo. iivenkile unikezelo imichiza), carbonic acid Sodium (ekwabizwa ngokuba "soda ash", umgubo etyiwayo alkali yi crystallization yesodium carbonate, leyo inokutshintshwa umgubo ezityiwayo alkali, okanye sodium carbonate esetyenziswa kushishino imichiza), iiglavu zokhuselo irabha (kucetyiswa) , ipeni yokumakisha eneoyile, iyeza lokutya, i-bench drill, I-sandpaper yamanzi.
Okokuqala, sebenzisa umshicileli ukuprinta umzobo we-PCB kwifilimu okanye iphepha le-asidi ye-sulfuric ukwenza "ifilimu engalunganga".Qaphela ukuba imifanekiso yesibuko ekhohlo nasekunene iyadingeka xa kushicilelwa, kwaye umhlophe uguqulwa (oko kukuthi, i-wiring iprintwe emhlophe, kwaye indawo apho i-foil yobhedu ingafunwayo imnyama).
Gcoba umphezulu we-copper-clad yebhodi ene-copper-clad nge-sandpaper yamanzi, kwaye ugaye i-oxide layer, uze uhlambulule umgubo wobhedu oveliswa ngokusila ngamanzi, kwaye uyomise.
Ukuba kusetyenziswa ioyile yefotosensitive, sebenzisa ibrashi encinci ukupeyinta ngokulinganayo ioyile yefotosensitive kumphezulu wecopper clad laminate kwaye uyomise.Ukuba usebenzisa ifilimu ye-photosensitive, ncamathelisa ifilimu ye-photosensitive kumphezulu webhodi yobhedu yobhedu ngeli xesha.Kukho ifilimu ekhuselayo kumacala omabini efilimu ye-photosensitive.Okokuqala krazula ifilimu ekhuselayo kwelinye icala uze unamathele kwibhodi yobhedu.Musa ukushiya amaqamza omoya.Olunye uluhlu lwefilimu ekhuselayo Musa ukukhawuleza ukuyikrazula.Nokuba yifilim ethatha ifoto okanye ioyile ethatha ifoto, nceda usebenze kwigumbi elimnyama.Ukuba akukho gumbi elimnyama, unokuvala amakhethini kwaye uvule izibane zamandla aphantsi ukuze usebenze.I-laminate ene-copper ehlanganisiweyo kufuneka igcinwe kude nokukhanya.
Beka "ifilimu engalunganga" kwilaminate ene-copper-clad eye yafumana unyango lwe-photosensitive, cofa ipleyiti yeglasi, kwaye uxhome isibane se-ultraviolet ngaphezulu ukuqinisekisa ukuba zonke iindawo zinokufumana imitha ye-ultraviolet efanayo.Emva kokuyibeka, vula isibane se-ultraviolet.Imitha ye-ultraviolet iyingozi ebantwini.Musa ukujonga ngokuthe ngqo ukukhanya okukhutshwa sisibane se-ultraviolet ngamehlo akho, kwaye uzame ukunqanda ukuvezwa kwesikhumba.Kunconywa ukusebenzisa ibhokisi yekhadibhodi ukwenza ibhokisi elikhanyayo lokuvezwa.Ukuba utyhilekile kwigumbi, nceda uphume kwigumbi emva kokukhanyisa isibane.Ubude benkqubo yokuvezwa buhambelana nezinto ezininzi ezifana namandla esibane kunye nezinto eziphathekayo "zefilimu engalunganga".Ngokuqhelekileyo, ukusuka kwi-1 ukuya kwi-20 imizuzu.Unako ukucima isibane rhoqo ukuze uhlolwe.Ukuba kukho ukwahlukana kombala ocacileyo kakhulu kwifilimu ye-photosensitive (apho ibonakaliswe ekukhanyeni kwe-ultraviolet) Umbala uba mnyama, kwaye umbala kwezinye iindawo uhlala ungatshintshi), ngoko ukubonakaliswa kunokumiswa.Emva kokuba i-exposure imisiwe, kusekho imfuneko ukuyigcina ebumnyameni de umsebenzi wophuhliso ugqitywe.
Lungiselela i-2% yoxinzelelo lwesisombululo se-sodium carbonate, cwilisa i-laminate ye-copper evezwe kwisisombululo, linda ixeshana (malunga nomzuzu o-1), kwaye uyabona ukuba ifilimu ye-photosensitive kwindawo ekhanyayo engakhange ibonakale iqala. ukuba mhlophe kwaye adumbe.Kwakungekho tshintsho lubalulekileyo kwiindawo ezimnyama eziveziweyo.Ngeli xesha, ungasebenzisa i-cotton swab ukuze usule ngobumnene iindawo ezingabonakaliyo.Ukuphuhlisa yinkqubo ebaluleke kakhulu, elingana nenyathelo lokutshintshwa kwe-thermal yokwenza i-PCB ngendlela yokudlulisa i-thermal.Ukuba indawo engabonakaliyo ayihlanjwanga ngokupheleleyo (ayiphuhliswanga ngokupheleleyo), iya kubangela ukubola kuloo ndawo;kwaye ukuba iindawo eziveziweyo ziyahlanjwa, i-PCB eveliswayo iya kuba ingaphelelanga.
Emva kokuba uphuhliso luphelile, unokushiya igumbi elimnyama ngeli xesha kwaye uqhubeke phantsi kokukhanya okuqhelekileyo.Jonga ukuba iingcingo zecandelo eliveziweyo zigqityiwe.Ukuba ayiphelelanga, inokugqityezelwa ngepeni yokumakisha esekwe kwi-oyile, njengendlela yokudlulisa ubushushu.
Okulandelayo yi-etching, eli nyathelo lifana ncakasana ne-etching kwindlela yokudlulisa i-thermal, nceda ubhekiselele ngasentla.
Emva kokuba i-corrosion igqityiwe, ukudilizwa kwenziwa.Lungiselela i-2% yesisombululo se-sodium hydroxide, ucwilise i-laminate ye-copper clad kuyo, ulinde ixesha elithile, i-photosensitive material eseleyo kwi-laminate yobhedu iya kuwa ngokuzenzekelayo.Isilumkiso: I-sodium hydroxide yialkali eyomeleleyo kwaye iyonakalisa kakhulu.Nceda uqaphele xa uyiphatha.Kucetyiswa ukuba unxibe iiglavu ezikhuselayo kunye nezibuko.Nje ukuba ichukumise ulusu, nceda uyihlambulule ngamanzi ngoko nangoko.Isodium hydroxide eqinileyo kufuneka ibeneempawu eziqinileyo zehygroscopic, kwaye iya kubola ngokukhawuleza xa ivezwe emoyeni, nceda uyigcine ingangeni moya.Isisombululo se-sodium hydroxide sinokusabela nge-carbon dioxide emoyeni ukwenza i-sodium carbonate, eya kubangela ukungaphumeleli, nceda uyilungiselele ngoku.
Emva kokudiliza, hlamba intsalela ye-sodium hydroxide kwi-PCB ngamanzi, uyeke yome emva koko ugqobhoze imingxuma.
Ixesha lokuposa: Mar-15-2023