Inkqubo yokutshiza ngeFlux
Umatshini wokuthambisa wamaza okhethiweyoIsixhobo sokutshiza se-flux sisetyenziselwa i-soldering ekhethiweyo, oko kukuthi umlomo wombhobho ubaleka ukuya kwindawo echongiweyo ngokwemiyalelo ecwangcisiweyo kwaye emva koko ugungxule kuphela indawo ekwibhodi efuna ukuthengiswa (indawo yokutshiza kunye nokutshiza ngomgca kuyafumaneka), kwaye isixa sokutshiza kwiindawo ezahlukeneyo sinokuhlengahlengiswa ngokwenkqubo.Ngenxa yokutshiza okukhethiweyo, ayisiyiyo kuphela isixa se-flux esisindisiweyo xa kuthelekiswa ne-soldering yamaza, kodwa ungcoliseko lweendawo ezingaxutywanga ebhodini nazo ziyaphetshwa.
Ekubeni kukutshiza okukhethiweyo, ukuchaneka kokulawulwa kombhobho we-flux kuphezulu kakhulu (kubandakanywa nendlela yokuqhuba i-nozzle drive), kunye ne-nozzle ye-flux kufuneka ibe nomsebenzi wokulinganisa ngokuzenzekelayo.
Ukongeza, ukukhethwa kwezinto eziphathekayo kwinkqubo yokutshiza i-flux kufuneka ikwazi ukuthathela ingqalelo ukubola okuqinileyo kwe-non-VOC flux (okt, i-flux e-soluble yamanzi), ukwenzela ukuba naphi na apho kukho ithuba lokunxibelelana ne-flux, iindawo. kufuneka ikwazi ukumelana nomhlwa.
Preheat Modyuli
Isitshixo kwimodyuli ye-preheat kukhuseleko kunye nokuthembeka.
Okokuqala, ukufudumeza kwebhodi epheleleyo yenye yezitshixo.Ngenxa yokuba ibhodi yokutshisa ibhodi yonke inokuthintela ngokufanelekileyo ukuguqulwa kwebhodi yesekethe okubangelwa ukushisa okungalinganiyo kwiindawo ezahlukeneyo zebhodi.
Okwesibini, ukhuseleko kunye nokulawulwa kokushisa kwangaphambili kubaluleke kakhulu.Indima ephambili yokutshisa i-preheating kukuvula i-flux, kuba ukusebenza kwe-flux kugqityiwe phantsi komgangatho othile weqondo lokushisa, ukushisa okuphezulu kakhulu kunye nokushisa okuphantsi kakhulu akulungile ekusebenzeni kwe-flux.Ukongeza, isixhobo se-thermal kwibhodi yesekethe sikwafuna i-preheat elawulwayo yobushushu, okanye isixhobo se-thermal siya konakala.
Iimvavanyo zibonise ukuba ukufudumala okwaneleyo kunokunciphisa ixesha lokuthengisa kunye nokunciphisa ukushisa kwe-solder;kwaye ngale ndlela, i-pad kunye ne-substrate stripping, i-thermal shock kwibhodi yesekethe, kunye nomngcipheko wobhedu otyhidiweyo nawo uyancipha, kwaye ukuthembeka kwe-soldering ngokwemvelo kwanda kakhulu.
Imodyuli yeSolder
Imodyuli ye-soldering idla ngokuba ne-tin cylinder, ipompo ye-mechanical / electromagnetic, i-soldering nozzle, isixhobo sokukhusela i-nitrogen, kunye nesixhobo sokuhambisa.Ngenxa yempompo yomatshini/ye-electromagnetic, i-solder kwi-solder cylinder iya kuqhuba ngokuqhubekayo iphuma kwimibhobho ye-solder eyahlukileyo ukwenza i-wave ye-tin eguquguqukayo ezinzileyo;isixhobo sokukhusela initrogen sinokuthintela ngokufanelekileyo imilomo ye-solder ukuba ivaleke ngenxa yokuvelisa inkunkuma;kunye nesixhobo sokuhambisa siqinisekisa ukunyakaza okuchanekileyo kwe-solder cylinder okanye ibhodi yesekethe ukufezekisa i-point-by-point soldering.
1. Ukusetyenziswa kwegesi yenitrogen.Ukusetyenziswa kwegesi ye-nitrogen kunokunyusa ukuthengiswa kwe-solder-free solder ngamaxesha e-4, ebaluleke kakhulu ekuphuculeni ngokubanzi umgangatho we-solder-free soldering.
2. Umahluko osisiseko phakathi kwe-solder ekhethiweyo kunye ne-dip soldering.Dip soldering kukuba nkxu ibhodi yesekethe kwi cylinder yenkcenkce ethembele phezu tension umphezulu solder ukunyuka ngokwendalo ukugqiba solder.Kumandla amakhulu obushushu kunye neebhodi zeesekethe ezinamanqwanqwa amaninzi, idiphu ye-soldering kunzima ukufezekisa iimfuno zokungena kwe-tin.I-soldering ekhethiweyo yahlukile, njengoko iliza eliguquguqukayo letin elibaleka liphuma kumbhobho we-solder lichaphazela ngokuthe ngqo ukungena okuthe nkqo kwetoti kumngxuma odlulayo;ingakumbi i-lead-free soldering, efuna i-tin wave eguqukayo neyomeleleyo ngenxa yeempawu zayo zokumanzisa.Ukongeza, i-wave ejikelezayo enamandla ayinakwenzeka ukuba ibe ne-oxide eseleyo kuyo, eya kunceda ekuphuculeni umgangatho we-soldering.
3. Ukusekwa kweeparamitha ze-soldering.
Kumalungu ahlukeneyo e-solder, imodyuli ye-solder kufuneka ikwazi ukwenza izicwangciso zomntu ngamnye kwixesha le-soldering, ukuphakama kwentloko ye-wave kunye ne-soldering position, eya kunika injineli yokusebenza indawo eyaneleyo yokwenza uhlengahlengiso lwenkqubo ukwenzela ukuba i-solder nganye idibanise ngokufanelekileyo.Ezinye izixhobo zokuthambisa ezikhethiweyo zide zibe namandla okuthintela ukudityaniswa kwebhulorho ngokulawula imilo yesolder joint.
Inkqubo yothutho yePCB
Imfuno ephambili ye-solder ekhethiweyo yenkqubo yokudluliselwa kwebhodi kukuchaneka.Ukuze kufezekiswe iimfuno zokuchaneka, inkqubo yokudluliselwa kufuneka ihlangabezane nala manqaku mabini alandelayo.
1. umzila wezinto eziphathekayo u-deformation-proof, uzinzile kwaye uqinile.
2. Izixhobo zokubeka zongezwa kwiingoma ezidlula kwimodyuli ye-flux spray kunye nemodyuli ye-solder.
Iindleko eziphantsi zokusebenza ngenxa ye-welding ekhethiweyo
Iindleko eziphantsi zokusebenza kwe-welding ekhethiweyo yisizathu esibalulekileyo sokuthandwa kwayo ngokukhawuleza kunye nabavelisi.
Ixesha lokuposa: Jan-22-2022