SMT yog dab tsi?
Tsuas yog hais tias, SMT yog cov txheej txheem ntawm qhov muab tso rau hauv lub teeb meem PCB rau kev tsim hluav taws xob txuas. Txhua yam koj xav tau rau qhov no yog lub stencil, cov tais diav, thiab lub tshuab luam ntawv.
Dab tsi yog qhov zoo?
Qhov muab tshuaj yog ua los ntawm cov kab laug ci thiab lub plhaub, uas yog tshuaj ntxuav tu tshuaj. Tsuas yog nws ua raws li cov ntaub nplaum thaum cov khoom raug muab tso rau hauv pawg thawj coj saib, yog tias muab tso kom zoo, tus coj yuav wettened, uas tsim muaj zog tam sim no ntawm lub ncoo ntawm lub rooj tsavxwm thiab cov khoom tivthaiv.
Vim li cas kuv thiaj xav tau lub tshuab luam ntawv?
Tus engineer xav tau ib lub tshuab luam ntawv vim tias nws yog qhov zoo tshaj plaws kom paub meej tias lub lauj kaub muab tshuaj txhuam mus raws nraim qhov nws xav tau. Lub tshuab luam ntawv lub cev yuav dlhos pawg thawj coj thiab cov khoom, thiab cov khoom siv zom zaws yog zawm ntawm lub rooj tsavxwm. Feem ntau, qhov no yuav siv li ntawm 15-45 feeb rau txhua lub rooj tsavxwm, ua qhov zoo rau cov neeg uas xav tau ntau lub npas ntawm lub sijhawm nrawm.
Cov kauj ruam twg luam tawm tsab ntawv pov thawj cov kab ntawv luam tawm?
Cov kauj ruam yog raws li:
1. Tsim: Tag nrho cov PCBs yuav tsum muaj cov ntsiab lus taw qhia rau lawv kom lawv paub tseeb tias qhov twg lub cev yuav tsum mus ua kom haum raws li tus lej. Qhov no yog tshwj xeeb tshaj yog yooj yim ntawm yooj yim, ib lub rooj sib tham, uas txhais tau hais tias lawv tsuas muaj tooj liab ntawm ib qho ntawm nws cov chaw.
2. Kev Cob Qhia: Qhov chaw nruab nrab ntawm cov pawm thiab cov txwj laug feem ntau yog muab zom zaws nrog lub npog qhov ncauj los txhim kho qhov tseeb thiab tswj cov khiav ntawm lub voom.
3. Tag Nrho: Ua ib qho ntawm cov kauj ruam kawg, cov pawm thiab cov laug yog them rau tooj npoo li tsis muaj kev tiv thaiv kev tiv thaiv no, cov cheebtsam nws yog oxidation.