Tom qab reflow soldering ntawm LED teeb hlaws dai, lub reflow soldering kub yuav tsum tau teem, txwv tsis pub nws yog ib qho yooj yim ua rau lub teeb tuag tshwm sim ntawm lub batch ntawm teeb hlaws dai thiab ua irreparable poob. Yog li yuav ua li cas LED reflow soldering ua haujlwm tsis zoo thiab ua rau tsis tsim nyog poob? Jinlida yuav piav qhia ntawm no ntau npaum li cas qhov kub thiab txias ntawm LED teeb hlaws soldering reflow qhov cub?
Dab tsi yog qhov kub thiab txias ntawm LED teeb hlaws soldering reflow qhov cub?
1. Ua ntej ua haujlwm soldering, LED reflow soldering yuav tsum tau nyeem lub Hoobkas specifications ntawm LED teeb hlaws thiab saib nws ntau yam kev tsis.
(1) Nws nyob ntawm qhov kub tsis kam ntawm LED teeb hlaws ntim khoom;
(2) Nws nyob ntawm seb cov khoom siv li cas ntawm cov khoom siv hauv LED vuam yog, xws li dav PCB (fiber board, thiab lwm yam), aluminium substrate, ceramic board, thiab lwm yam.;
(3) Nws nyob ntawm cov khoom siv, txawm tias nws yog qhov kub thiab txias lossis qhov kub thiab txias, los yog resin, thiab lwm yam.
(4) Raws li qhov zoo ntawm LED reflow soldering cov cuab yeej, saib cov naj npawb ntawm qhov kub thiab txias ntawm LED reflow soldering, kev tswj ntawm tus ncej ntws tus nqi, kiv cua, thiab qhov kub thiab txias ntawm txhua cheeb tsam.
2. Tom qab LED reflow soldering kub nkhaus hloov kho, cov khoom loj yuav tsum tau ua tom qab thawj lub rooj tsavxwm tau lees paub thiab qhov zoo yog OK. Qhov no yog thawj qhov kev lees paub ua haujlwm hauv kev tswj hwm lub Hoobkas.
3. Siv rau kev hloov pauv dav dav ntawm LED teeb hlaws tom qab LED reflow soldering
Qhov kub qis tshaj plaws yog 150-170 degrees, thiab qhov kub siab tshaj plaws yog 240-245 degrees (qhov kub siab tshaj plaws tuaj yeem hloov kho rau 260, yog tias 245 degrees tuaj yeem yaj tin, tsis txhob kho rau 260), lub sij hawm siab tshaj 220 degrees tsis tuaj yeem tshaj. 60 vib nas this, Yog hais tias qhov kub thiab txias, lub sij hawm ntawm 260 degrees tsis tuaj yeem tshaj 10 vib nas this. Yog tias nws yog 7 qhov chaw kub, koj tuaj yeem xa mus rau cov chaw hauv qab no: 160, 170, 175, 180, 190, 210, 245, 220. Yog tias lub teeb ci LED hlaws yog lub lens silicone, BI58SN42 solder paste tuaj yeem siv, thiab Qhov kub siab tshaj plaws yog 225 degrees Celsius. Yog tias nws yog PC lens, reflow soldering tsis tuaj yeem siv tag nrho.
