I. Ob tog vaj huam sib luag board yam ntxwv
Qhov sib txawv ntawm ib leeg-sab thiab ob-sided Circuit Court boards yog tus naj npawb ntawm cov khaubncaws sab nraud povtseg ntawm tooj liab.
Ob tog ntawm lub rooj tsavxwm yog lub rooj tsav xwm hauv Circuit Court nrog tooj liab ntawm ob sab, uas tuaj yeem txuas tau los ntawm qhov.Thiab tsuas muaj ib txheej ntawm tooj liab rau ntawm ib sab, tsuas yog siv tau rau cov kab yooj yim xwb, thiab qhov ua tau tsuas yog siv rau plug-in tab sis tsis yog rau kev coj ua.
Cov kev xav tau ntawm lub rooj tsavxwm ob tog yog cov xov hlau ceev, qhov aperture me dua, thiab qhov aperture ntawm lub qhov metallized yog me dua thiab me dua.Txheej rau txheej kev sib tshuam yog nyob ntawm qhov zoo ntawm lub qhov metallized, ncaj qha ntsig txog PCB kev ntseeg tau.
Nrog rau qhov txo qis ntawm qhov aperture, qhov qub tsis muaj qhov cuam tshuam rau qhov loj ntawm aperture cov khib nyiab, xws li txhuam cov khib nyiab, volcanic tshauv, ib zaug tso rau hauv lub qhov hauv, yuav ua rau cov tshuaj nag lossis daus ntawm tooj liab, tooj liab plating ploj, tsis muaj qhov tooj liab. , ua ib tug tuag killer ntawm lub qhov metallization.
II.Lub rooj tsavxwm ob tog nyob rau hauv thiaj li yuav xyuas kom meej tias ob-sided Circuit Court muaj ib tug txhim khu kev qha conductive nyhuv, yuav tsum xub siv nyob ntawm tej thiab thiaj li nyob rau welding qhov kev twb kev txuas ntawm ob lub vaj huam sib luag (uas yog, lub metallization txheej txheem los ntawm lub qhov ib feem), thiab txiav qhov kev sib txuas kab taub qhov protruding ib feem, thiaj li tsis ua mob rau tus neeg teb xov tooj tes, qhov no yog lub rooj tsavxwm ntawm kev npaj xaim.
III.Reflow qhov cubQhov tseem ceeb ntawm welding:
1. Cov txheej txheem ua tiav yuav tsum tau ua raws li qhov yuav tsum tau ua ntawm cov txheej txheem kos duab rau cov cuab yeej xav tau shaping;Ntawd yog, tom qab thawj cov yas plug-in.
2. Tom qab shaping, tus qauv lub ntsej muag ntawm lub diode yuav tsum tau nce, thiab qhov ntev ntawm ob tus pins yuav tsum tsis txhob sib haum.
3. Thaum lub cuab yeej nrog polarity yuav tsum tau muab tso, xyuam xim rau lub polarity yuav tsum tsis txhob muab tso rov qab, thiab cov menyuam integrated block Cheebtsam, tom qab insertion, txawm ntsug los yog recumbent ntaus ntawv, yuav tsum tsis txhob pom tseeb qaij.
4. Lub zog ntawm cov hlau hluav taws xob siv rau vuam yog nyob nruab nrab ntawm 25 ~ 40W, qhov kub ntawm lub taub hau hluav taws xob yuav tsum tswj tau ntawm 242 deG C, qhov kub siab dhau lub taub hau yog yooj yim "tuag", qhov kub yog tsawg dhau los yaj lub solder, lub vuam lub sij hawm yog tswj nyob rau hauv 3 ~ 4 vib nas this.
5. formal welding raws li cov cuab yeej los ntawm siab mus rau qhov siab, los ntawm sab hauv mus rau sab nraud ntawm lub vuam txoj kev ua haujlwm, vuam lub sij hawm rau tus tswv, lub sij hawm ntev heev yuav kub ntaus tsis zoo, tseem yuav kub tooj liab coated hlau ntawm lub tooj liab coated phaj.
6. Vim tias nws yog ob sab welding, yog li nws yuav tsum tau ua cov txheej txheem thav duab los tso lub rooj tsav xwm hauv Circuit Court, thiaj li tsis txhob nias lub cuab yeej hauv qab no.
7. Tom qab ua tiav ntawm Circuit Court board vuam yuav tsum tau nqa tawm ib qho kev ntsuam xyuas ntawm cov cim hom, xyuas qhov to ntawm vuam qhov chaw, paub meej tias lub Circuit Court board tom qab lub redundant ntaus ntawv pin pruning, tom qab ntws mus rau hauv cov txheej txheem tom ntej.
8. Hauv kev ua haujlwm tshwj xeeb, yuav tsum nruj me ntsis ua raws li cov txheej txheem cuam tshuam rau kev khiav lag luam, kom ntseeg tau cov khoom siv vuam zoo.
Nrog rau kev loj hlob sai ntawm cov cuab yeej siv siab, cov khoom siv hluav taws xob sib txuas nrog cov pej xeem tau hloov kho tas li, cov pej xeem kuj xav tau kev ua haujlwm siab, me me, ntau yam khoom siv hluav taws xob, uas muab cov kev xav tau tshiab rau lub rooj tsav xwm Circuit Court.
Post lub sij hawm: Sep-03-2021