Iindaba zeshishini
Ulawulo lobushushu obuchanekileyo kwiiNkqubo zeLaser kunye nezicelo zoShishino ukusukela ngo-2002
Ulwimi
Kwimveliso ye-elektroniki, i-SMT isetyenziswa kakhulu kodwa ithanda ukuba nesiphene sokuthengisa njenge-solder ebandayo, ibhulorho, i-voids, kunye nokutshintsha kwecandelo. Le miba inokuthotywa ngokulungiselela iinkqubo zokukhetha kunye nendawo, ukulawula ukushisa kwe-solder, ukulawula izicelo ze-solder paste, ukuphucula uyilo lwe-PCB pad, kunye nokugcina indawo yobushushu obuzinzileyo. La manyathelo aphucula umgangatho wemveliso kunye nokuthembeka.
ITekhnoloji ye-Surface Mount (SMT) ithandwa kakhulu kumzi-mveliso wezobuchwephesha ngenxa yokusebenza kwayo okuphezulu kunye neenzuzo zokuhlangana ezixinana kakhulu. Nangona kunjalo, iziphene ze-soldering kwinkqubo ye-SMT zizinto ezibalulekileyo ezichaphazela umgangatho kunye nokuthembeka kweemveliso ze-elektroniki. Eli nqaku liza kuphonononga iziphene eziqhelekileyo ze-soldering kwi-SMT kunye nezisombululo zabo.
I-Cold Soldering: I-Cold soldering iyenzeka xa ubushushu be-soldering bunganelanga okanye ixesha le-solder lifutshane kakhulu, okubangela ukuba i-solder inganyibiliki ngokupheleleyo kwaye ibangele i-solder embi. Ukuze ugweme i-soldering ebandayo, abavelisi kufuneka baqinisekise ukuba umatshini we-reflow soldering unolawulo oluchanekileyo lweqondo lokushisa kwaye usete amaqondo okushisa afanelekileyo kunye namaxesha asekelwe kwiimfuno ezithile ze-solder paste kunye namacandelo.
I-Solder Bridging: I-Solder bridging ngomnye umcimbi oqhelekileyo kwi-SMT, apho i-solder idibanisa iindawo zokuthengisa ezikufutshane. Oku kudla ngokubangelwa sisicelo sokuncamathisela solder ngokugqithisileyo okanye uyilo lwephedi yePCB engafanelekanga. Ukujongana ne-solder bridging, lungiselela inkqubo yokukhetha kunye nendawo, lawula inani le-solder paste esetyenzisiweyo, kwaye uphucule uyilo lwe-PCB pad ukuqinisekisa isithuba esaneleyo phakathi kweepads.
I-Voids: I-Voids ibhekisela kubukho beendawo ezingenanto ngaphakathi kweendawo zokubethelela ezingazaliswanga nge-solder. Oku kunokuchaphazela kakhulu amandla kunye nokuthembeka kwe-soldering. Ukuthintela i-voids, cwangcisa ngokufanelekileyo iprofayili yokushisa i-reflow soldering ukuqinisekisa ukuba i-solder iyanyibilika ngokupheleleyo kwaye igcwalise iipads. Ukongeza, qinisekisa ukuba kukho umphunga owaneleyo ngexesha lenkqubo ye-soldering ukunqanda intsalela yegesi enokwenza i-voids.
I-Component Shift: Ngexesha lenkqubo ye-reflow soldering, amacandelo angahamba ngenxa yokunyibilika kwe-solder, ekhokelela kwizikhundla ezingalunganga. Ukuthintela ukutshintshwa kwecandelo, lungiselela inkqubo yokukhetha kunye nendawo kwaye uqinisekise ukuba iiparamitha zomatshini wokuchola kunye nendawo zisetwe ngokuchanekileyo, kubandakanya isantya sokubeka, uxinzelelo, kunye nohlobo lombhobho. Khetha imilomo efanelekileyo ngokusekwe kubungakanani kunye nokumila kwamalungu ukuqinisekisa ukuba ancanyathiselwe ngokukhuselekileyo kwiPCB. Ukuphucula uyilo lwephedi yePCB ukuqinisekisa indawo eyaneleyo yephedi kunye nesithuba kunokunciphisa ngokufanelekileyo utshintsho lwecandelo.
Imekobume yoBuqondo obuZinzileyo: Indawo yobushushu obuzinzileyo ibalulekile kumgangatho wokuthengisela. I-Water Chillers , ngokulawula ngokuchanekileyo ubushushu bamanzi okupholisa, ukubonelela ngokuzinza okupholileyo okuphantsi kweqondo lokushisa kumatshini wokuphinda uthengise kunye nezinye izixhobo. Oku kunceda ukugcina i-solder ngaphakathi kwinqanaba lobushushu elifanelekileyo lokunyibilika, ukuphepha iziphene ze-solder ezibangelwa ukushisa okanye ukufudumala.
Ngokulungiselela inkqubo yokukhetha kunye nendawo, ukuseta ngokufanelekileyo iprofayile yobushushu bokuthengisa, ukuphucula uyilo lwePCB, kunye nokukhetha imilomo efanelekileyo, sinokuziphepha ngokufanelekileyo iziphene eziqhelekileyo zokuthengisa kwi-SMT kunye nokuphucula umgangatho kunye nokuthembeka kweemveliso.
Silapha ngenxa yakho xa usidinga.
Nceda ugcwalise ifomu ukuze uqhagamshelane nathi, kwaye siya kukuvuyela ukukunceda.
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I-TEYU S&A Chiller yasekwa ngo-2002 ineminyaka engama-23 yamava okwenziwa kwe-chiller, kwaye ngoku yamkelwa njengovulindlela wobuchwephesha bokupholisa kunye neqabane elithembekileyo kushishino lwelaser.
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