Lub rooj tsav xwm hauv Circuit Court yuav pom cov tinning tsis zoo thaum lub sij hawm tsim SMT. Feem ntau, cov tinning tsis zoo yog cuam tshuam nrog kev ua kom huv ntawm qhov liab qab PCB. Yog tias tsis muaj av, yuav muaj qhov pib tsis zoo tinning. Thib ob, tinning Thaum cov flux nws tus kheej tsis zoo, qhov kub thiab txias thiab lwm yam. Yog li dab tsi yog qhov tshwm sim tseem ceeb ntawm cov khoom siv hluav taws xob uas tsis zoo hauv Circuit Board tsim thiab ua? Yuav daws qhov teeb meem no li cas tom qab nthuav tawm nws?
1. Lub tin nto ntawm lub substrate los yog qhov chaw yog oxidized thiab tooj liab nto yog npub.
2. Muaj flakes nyob rau saum npoo ntawm lub rooj tsavxwm Circuit Court tsis muaj tin, thiab cov txheej plating ntawm lub rooj tsavxwm nto muaj cov impurities feem.
3. Cov txheej txheej muaj peev xwm yog ntxhib, muaj qhov tshwm sim kub hnyiab, thiab muaj flakes ntawm lub rooj tsavxwm tsis muaj tin.
4. Qhov saum npoo ntawm lub rooj tsavxwm yog txuas nrog roj, impurities thiab lwm yam sundries, los yog muaj cov roj silicone residual.
5. Muaj qhov pom tseeb ci ntsa iab ntawm cov npoo ntawm qhov muaj peev xwm tsawg, thiab cov txheej txheem siab muaj peev xwm yog ntxhib thiab hlawv.
6. Cov txheej txheej ntawm ib sab yog tiav, thiab txheej txheej ntawm sab nraud yog qhov tsis zoo, thiab muaj qhov pom tseeb ci ntsa iab ntawm ntug ntawm lub qhov muaj peev xwm tsawg.
7. Lub rooj tsav xwm PCB tsis tau lees paub tias yuav ua tau raws li qhov kub thiab txias thaum lub sij hawm soldering txheej txheem, los yog cov flux siv tsis raug.
8. Muaj cov impurities nyob rau hauv cov plating rau ntawm lub rooj tsav xwm hauv Circuit Court, los yog cov khoom sib tsoo tau tso rau ntawm qhov chaw ntawm lub voj voog thaum lub sij hawm tsim cov txheej txheem ntawm lub substrate.
9. Ib cheeb tsam loj uas tsis tshua muaj peev xwm tsis tuaj yeem plated nrog tin, thiab qhov chaw ntawm lub rooj tsav xwm Circuit Court muaj cov xim liab tsaus nti lossis xim liab, nrog rau cov txheej tiav ntawm ib sab thiab cov txheej tsis zoo rau lwm qhov.