Umgaqo kunye nenjongo ye-reflow soldering

I-Reflow soldering i-solder ethambileyo eqaphela uxhulumaniso lomatshini kunye nombane phakathi kweephelo ze-solder zamacandelo afakwe phezulu okanye izikhonkwane kunye neepadi zebhodi eziprintiweyo ngokubuyisela i-paste-loaded solder esasazwa kwangaphambili kwiibhodi zebhodi eziprintiweyo. weld.

Umgaqo we-reflow soldering

Ibhodi yesekethe kunye nezixhobo ze-smt ezixhonyiweyo zithuthwa ngomzila wesikhokelo se-oven reflow, kwaye udlula kwindawo yokufudumeza, indawo yokugcina ubushushu, indawo ye-welding kunye nendawo yokupholisa ye-oven reflow ngokulandelanayo.

A. Xa i-PCB ingena kwindawo yokufudumeza, i-solvent kunye negesi kwi-solder paste iyajika. Ngelo xesha, i-flux kwi-solder paste imanzisa iipads, ii-terminals zecandelo kunye nezikhonkwane, kwaye i-solder paste iyathambisa, idibanise, kwaye igubungele i-solder paste. ipleyiti yokuhlukanisa iipads kunye nezikhonkwane zecandelo kwi-oxygen.

B. Xa i-PCB ingena kwindawo yokugcina ubushushu, i-PCB kunye namacandelo afudunyezwa ngokupheleleyo ukuthintela i-PCB ukuba ingene ngokukhawuleza kwindawo yokushisa ephezulu ye-welding kwaye yonakalise i-PCB kunye namacandelo.

C. Xa i-PCB ingena kwindawo ye-soldering, iqondo lobushushu liyenyuka ngokukhawuleza ukuze i-solder paste ifikelele kwimo etyhidiweyo, kwaye i-solder engamanzi imanzisa, isasaze, isasaze, okanye iphinde ikhuphe iipads, iziphelo zecandelo kunye nezikhonkwane ze-PCB ukwenza i-solder joints. .

D. I-PCB ingena kwindawo yokupholisa ukuze iqinise i-solder joints; xa i-reflow soldering igqityiwe.

Injongo ye-reflow soldering

"Reflow soldering" kungenxa yokuba igesi ijikeleza kumatshini welding ukuvelisa ubushushu obuphezulu ukufezekisa injongo ye-welding. Kukuthumela ibhodi yesiphaluka kunye namacandelo e-SMD afakwe kwi-SMT reflow soldering room, kwaye emva koko ubeke i-solder paste esetyenziselwa ukuthengisa amacandelo e-SMD emva kokushisa okuphezulu. Inkqubo yokwenza utshintsho lobushushu reflow ngokusebenzisa ubushushu obuphezulu umoya oshushu uyanyibilika, ukwenzela ukuba amacandelo patch kudityaniswe pads kwibhodi yesekethe, emva koko lupholile kwaye welded kunye. Isishwankathelo sisonke Injongo ye-reflow soldering kukugqithisa amacandelo e-SMT patch ye-passive pins ngokusebenzisa i-Solder paste kunye nebhodi yesekethe idityaniswe kunye yenze ibhodi yesekethe ye-PCBA egqityiweyo eneempawu ezithile zombane.