Nws yog qhov tsim nyog los tsim qhov kub ntawm reflow soldering thaum lub sij hawm ua cov txheej txheem ntawm reflow soldering ntawm coj teeb hlaws, txwv tsis pub nws yog ib qho yooj yim ua rau lub teeb pom kev tuag ntawm cov hlaws dai, uas yog qhov tsis muaj kev cuam tshuam. Yog li yuav ua li cas yuav coj reflow soldering ua haujlwm tsis zoo kom ua rau poob li tsis tsim nyog?
Ua ntej, LED reflow soldering, tom qab kho lub ntsuas cua kub, yuav tsum dhau los ntawm thawj daim phaj thiab paub meej tias txhua yam khoom siv zoo ua ntej pawg ntau lawm kom ua rau nws tsis ua li cas. Nov yog thawj zaug kev lees paub nyob rau hauv kev tswj hwm lub Hoobkas zoo.
Thib ob, koj yuav tsum nyeem lub Hoobkas kev teeb tsa ntawm LED hlaws teeb thiab ntau yam kev ntsuas ua ntej ua vuam ua haujlwm ntawm LED reflow soldering.
1. Nws nyob ntawm qhov siab kub ntawm LED teeb hlaws kab ntim khoom ntim khoom.
2. Nws ua raws li hom khoom siv vuam siv los ntawm cov khoom siv ntawm LED yog, xws li PCB (fiberboard, thiab lwm yam), aluminium base phaj, ceramic board, thiab lwm yam.
3. Nws nyob ntawm solder, seb nws yog ham muab tshuaj ntawm qhov kub lossis qis kub, lossis roj hmab, thiab lwm yam.
4. Raws li qhov tseeb ua tau zoo ntawm cov khoom siv LED reflow soldering, tus naj npawb ntawm qhov kub ntawm qhov chaw ntawm LED reflow soldering, thiab kev tswj ntawm tus nqi ncov qaum, tus kiv cua, kev ntsuas kub ntawm txhua cheeb tsam thiab lwm yam yuav tsum tau txiav txim siab.
Thib peb, kev siv cov kev hloov kho dav dav ntawm LED reflow soldering los ntawm cov hlaws dai LED
Qhov ntsuas kub qis tshaj plaws yog 150–170 degrees, thiab qhov kub siab tshaj plaws yog 240-245 degrees (qhov siab tshaj plaws yuav kho tau mus rau 260, yog tias 245 degrees tuaj yeem yaj tau tin, tsis hloov kho rau 260). Thiab lub sijhawm ntawm qhov kub siab tshaj 220 degrees tsis tuaj yeem tshaj 60 vib nas this. Yog tias qhov ntsuas kub nce siab, lub sijhawm ntawm qhov kub siab tshaj 260 degrees tsis tuaj yeem tshaj 10 vib nas this. Yog tias qhov ntsuas kub yog 7, koj tuaj yeem xa mus rau cov chaw hauv qab no: 160, 170, 175, 180, 190, 210, 245, 220. Yog tias cov LED hlaws dai yog silicone lens, koj tuaj yeem siv BI58SN42 tin paste, thiab qhov kub tshaj plaws yog 225 degrees Celsius. Yog tias nws yog PC lens, siv tsis tau ncaj ncaj nrog kev siv.
