Hlaziya i-oveniyenye yeenkqubo ezintathu eziphambili kwinkqubo yokunyuswa kwe-SMT.Isetyenziselwa ikakhulu ukuthengisa ibhodi yesekethe yamacandelo afakwe.I-solder paste iyanyibilika ngokufudumeza ukwenzela ukuba i-patch element kunye nebhodi yebhodi yesekethe ye-solder pad idibene kunye.Ukuqondaumatshini wokuphinda uphinde udibanise, kufuneka uqonde inkqubo ye-SMT kuqala.
NeoDen reflow oveni IN12
I-solder paste ngumxube wentsimbi ye-tin powder, i-flux kunye nezinye iikhemikhali, kodwa i-tin ekuyo ikhona ngokuzimeleyo njengamaso amancinci.Xa ibhodi PCB ngokusebenzisa imimandla ubushushu eziliqela kwiziko reflow, ngaphezu 217 degrees Celsius, amaso inkonkxa encinane kunyibilika.Emva kokuba i-flux kunye nezinye izinto ze-catalyzed, ukwenzela ukuba amasuntswana amancinci angenakubalwa anyibilike kunye, oko kukuthi, ukwenza loo masuntswana amancinci abuyele kwimeko yolwelo lokuhamba, le nkqubo ihlala kuthiwa yi-reflux.I-Reflux ithetha ukuba umgubo we-tin ukusuka kwindawo yangaphambili eqinileyo ubuyela kwimeko yolwelo, kwaye emva koko ukusuka kwindawo yokupholisa ubuyele kwisimo esiqinileyo kwakhona.
Intshayelelo yendlela ye-reflow soldering
Eyahlukileyoumatshini wokuphinda uphinde udibaniseineengenelo ezahlukeneyo, kwaye inkqubo nayo yahlukile.
I-infrared reflow soldering: ukusebenza kakuhle kobushushu obuphezulu bemitha, ukunyuswa kobushushu obuphezulu, kulula ukulawula ijiko lobushushu, iPCB ephezulu kunye nobushushu obusezantsi kulula ukuyilawula xa i-welding emacala mabini.Yiba nefuthe lesithunzi, ubushushu abufani, kulula ukubangela amacandelo okanye PCB yendawo itshise.
I-solder eshushu yokubuyisela umoya: iqondo lobushushu leconvection efanayo, umgangatho olungileyo we-welding.Iqondo lobushushu kunzima ukulawula.
Ukutyhelwa kwe-welding ye-hot hot reflow yahlulwe yaba ziindidi ezimbini ngokomthamo wayo wemveliso:
Izixhobo zommandla wobushushu: imveliso yobuninzi ilungele ukuveliswa kobuninzi bebhodi yePCB ebekwe kwibhanti yokuhamba, ukudlula kwindawo yobushushu obumiselweyo ngokulandelelana, indawo encinci kakhulu yobushushu iya kubakho ukutsiba kobushushu, ayifanelekanga kwindibano yoxinaniso oluphezulu. ukuwelda ipleyiti.Ikwaninzi kwaye isebenzisa umbane omninzi.
Ubushushu bommandla wezixhobo zedesktop ezincinci: ukuveliswa kwebhetshi encinci kunye nobukhulu obuphakathi uphando olukhawulezayo kunye nophuhliso kwindawo esisigxina, iqondo lobushushu ngokweemeko ezimiselweyo zitshintsha kunye nexesha, kulula ukusebenza.Ukulungiswa kwamacandelo angaphezulu anesiphene (ingakumbi amacandelo amakhulu) akufanelekanga kwimveliso yobuninzi.
Ixesha lokuposa: Apr-28-2021