Kuba SMT ibhodi, ingakumbi BGA kunye IC zincamatheliswe kwiimfuno conduction kufuneka kwinqanaba off, umngxuma iplagi convex concave plus okanye thabatha 1 mil, akanakuba nomngxuma umngxuma isikhokelo kwitoti ebomvu, umngxuma isikhokelo amaso Tibetan, ukuze ukuhlangabezana iimfuno zabathengi, ukuqhuba inkqubo yomngxuma weplagi kuninzi, ukuhamba kwenkqubo ende kakhulu, ukulawulwa kwenkqubo kunzima, rhoqo kumanqanaba omoya oshushu kunye nokumelana ne-oyile eluhlaza kuvavanyo lwe-soldering off;Emva kokunyanga, ukuqhuma kweoli kunye nezinye iingxaki zenzeka.Ngokweemeko zokwenyani zemveliso, iinkqubo ezahlukeneyo zomngxuma weplagi wePCB ziyashwankathelwa, kwaye inkqubo kunye noncedo kunye nobubi ziyathelekiswa kwaye zicaciswe:
Qaphela: Umgaqo wokusebenza wokulinganisa umoya oshushu kukusebenzisa umoya oshushu ukususa i-solder engaphezulu kumphezulu kunye nomngxuma webhodi yesekethe eprintiweyo, kwaye i-solder eseleyo igqunywe ngokulinganayo kwi-pad kunye nomgca we-solder ovulekileyo kunye nokuhombisa umphezulu wetywina, enye. iindlela zonyango lomphezulu webhodi yesekethe eprintiweyo.
I. Inkqubo yomngxuma wokuplaga emva komgangatho womoya oshushu
Inkqubo yokuhamba: ipleyiti evalela umphezulu we-welding →HAL→ umngxuma weplagi → ukunyanga.Inkqubo yomngxuma engekho iplagi yamkelwa ukuveliswa.Emva komgangatho womoya oshushu, ipleyiti yesikrini se-aluminium okanye isikrini se-inki sisetyenziselwa ukugqibezela imingxunya yeplagi yayo yonke inqaba njengoko kufunwa ngabathengi.I-inki yomngxuma weplagi ingaba yi-inki enovakalelo okanye inki ye-thermosetting, ukuze kuqinisekiswe ukuhambelana kombala wefilimu emanzi, i-inki yomngxuma weplagi isetyenziswe kakuhle kwibhodi ye-inki efanayo.Le nkqubo inokuqinisekisa ukuba umoya oshushu ophakamayo emva komngxuma odlulayo awuyehli ioyile, kodwa kulula ukubangela umngxuma wongcoliseko lwe-inki umphezulu womphezulu webhodi, ungalingani.Umthengi uthambekele kwi-welding ebonakalayo xa usebenzisaUmatshini we-SMTukunyusa (ingakumbi kwi-BGA).Ke abathengi abaninzi abayamkeli le ndlela.
II.Umgangatho womoya oshushu phambi kwenkqubo yomngxuma weplagi
2.1 Ukudluliselwa kweGraphic kuqhutywa emva komngxuma weplagi, ukuqina kunye nokusila iphepha le-aluminium.
Le nkqubo yenkqubo kunye nomatshini wokugaya we-CNC, ukugrumba ukukhupha iphepha le-aluminium emngxunyeni, elenziwe ngesikrini, umngxuma weplagi, uqinisekise ukuba umngxuma weplagi umngxuma ogcweleyo weplagi, umngxuma weplagi weplagi we-ink yomngxuma, ikwakhona ne-thermosetting inki, iimpawu zayo kufuneka zibe lukhuni, resin ukushwabana utshintsho incinci, kwaye umngxuma udonga lokubopha amandla kulungile.Inkqubo yokuhamba ihamba ngolu hlobo lulandelayo: unyango lwangaphambili → umngxuma weplagi → ipleyiti yokucola → ugqithiso lomzobo → ukudibanisa → ipleyiti yokumelana newelding
Ngale ndlela inokuqinisekisa ukuqhutywa okugudileyo komngxuma weplagi, umoya oshushu wokulinganisa bekungayi kubakho ioyile, icala lomngxunya eliqhumayo kwiingxaki ezinjengomgangatho onjengeoyile, kodwa inkqubo yemfuno yobhedu olutyebileyo olulahlwayo, yenza olu donga lomngxuma lube ngqindilili. umgangatho umthengi, ngoko ke yonke ibhodi imfuno eliphezulu yobhedu plating, kwaye kwakhona imfuneko eliphezulu ekusebenzeni umatshini wokusila, ukuqinisekisa ukuba intlaka phezu kobhedu ngokucokisekileyo ukususa, ezifana ubuso ubhedu icocekile kwaye ayingcoliswanga. .Uninzi lwezityalo PCB abanalo inkqubo yobhedu-ixesha elinye ukujiya, kunye nokusebenza kwezixhobo azikho kwiimfuno, okubangela ukuba le nkqubo ayisetyenziswa kwizityalo PCB.
2.2 Ibhlokhi yokudibanisa umphezulu webhodi yoshicilelo lwesikrini ngokuthe ngqo emva komngxuma weplagi we-aluminium sheet
Le nkqubo isebenzisa i-NUMERICAL yokulawula umatshini wokugaya, ukukhupha iphepha le-aluminium ukuze udibanise umngxuma, owenziwe kwinguqu yesikrini, efakwe kwi-screen somatshini wokushicilela umngxuma wokuvala iplagi, emva kokugqitywa kwendawo yokupaka iplagi ayiyi kudlula imizuzu engama-30, kunye nesikrini se-36T. Isikrini esithe ngqo sebhodi yoshicilelo lwebhodi yomphezulu wokumelana newelding, inkqubo yenkqubo yile: Unyango lwangaphambili - umngxuma weplagi - ushicilelo lwesikrini - ukubhaka kwangaphambili - ukuvezwa - uphuhliso - ukunyanga
Ngale nkqubo inokuqinisekisa ukuba i-oyile yokugubungela umngxuma wokuqhuba ilungile, iplagi yomngxuma tyaba, umbala wefilimu omanzi uyahambelana, ukulinganisa umoya oshushu kunokuqinisekisa ukuba umngxuma wokuqhuba awukho itoti, amaso e-tin awafihlwanga emngxunyeni, kodwa kulula ukuwenza. iphedi ye-inki emngxunyeni emva kokunyanga, okukhokelela ekuthengiseni okubi;Emva komgangatho womoya oshushu, umda we-bubbles ngokusebenzisa umngxuma kunye neoli yehla.Kunzima ukusebenzisa le nkqubo yokulawula imveliso, kwaye kuyimfuneko ukuba iinjineli zenkqubo zamkele iinkqubo ezikhethekileyo kunye neeparitha zokuqinisekisa umgangatho weplagi yeplagi.
2.3 Umngxuma weplagi ye-Aluminiyam, uphuhliso, i-precuring, iplate yokugaya umphezulu welding.
Ngomatshini wokugaya we-CNC, ukomba i-aluminium sheet efunekayo umngxuma weplagi, eyenziwe kwikhusi, efakwe kwi-shift screen umatshini wokushicilela umngxuma weplagi, umngxuma weplagi kufuneka ugcwale, macala omabini aphumayo angcono, kwaye emva kokunyanga, umphezulu weplate yokusila. unyango, inkqubo: Unyango lwangaphambili - umngxuma weplagi ukomisa kwangaphambili - ukuphuhlisa - ukunyanga kwangaphambili - ukuwelda komphezulu
Ekubeni ukunyangwa komngxuma weplagi kule nkqubo kunokuqinisekisa ukuba ioyile ayiwi okanye ayigqabhuki emngxunyeni emva kwe-HAL, kodwa amaso etoti afihlwe emngxunyeni kunye netoti kumngxunya emva kwe-HAL ayinakusonjululwa ngokupheleleyo, abathengi abaninzi abayamkeli.
2.4 I-Block welding kunye ne-plug hole igqitywe ngaxeshanye.
Le ndlela isebenzisa isikrini se-36T (43T), esifakwe kumatshini wokushicilela wesikrini, ukusetyenziswa kwephedi okanye ibhedi yezikhonkwane, ekugqityweni kwebhodi ngaxeshanye, yonke iplagi yomngxuma, inkqubo yile: Unyango lwangaphambili - ukuprintwa kwesikrini - kwangaphambili - ukomisa - ukuvezwa - uphuhliso - ukunyanga.
Ixesha lenkqubo lifutshane, ukusetyenziswa kwezixhobo eziphezulu, kunokuqinisekisa emva komngxuma ngaphandle kweoli, umngxuma wesikhokelo somgangatho womoya oshushu awukho kwitoti, kodwa ngenxa yokusebenzisa ushicilelo lwesikrini ukuplaga umngxuma, kwimemori yomngxuma kunye nenani elikhulu lomoya, xa ukunyanga, ukunyuka kwamaxabiso komoya, ukutyhutyha inwebu yokumelana ne-welding, inemingxuma, ingalingani, umoya oshushu wokulinganisa uya kukhokela umngxuma sisixa esincinci setoti.
Ixesha lokuposa: Nov-16-2021