1. Cov kev cai yooj yim ntawm SMT txheej txheem rau kev tsim qauv tsim muaj raws li hauv qab no:
Kev faib tawm ntawm cov khoom ntawm cov ntawv luam tawm Circuit Board yuav tsum sib xws li qhov ua tau.Lub peev xwm kub ntawm reflow soldering ntawm cov khoom lag luam zoo yog qhov loj, thiab cov concentration ntau dhau yog ib qho yooj yim ua rau qhov kub thiab txias hauv zos thiab ua rau cov khoom siv virtual.Nyob rau tib lub sijhawm, cov txheej txheem tsis sib xws kuj yog qhov tsim nyog rau qhov sib npaug ntawm qhov nruab nrab ntawm lub ntiajteb txawj nqus.Hauv kev vibration thiab cuam tshuam kev sim, nws tsis yooj yim rau kev puas tsuaj rau cov khoom, metallized qhov thiab solder pads.
2. Cov kev taw qhia kev sib tw ntawm cov khoom ntawm cov ntawv luam tawm Circuit Board yuav tsum zoo ib yam li deb li deb tau rau cov khoom sib xws, thiab cov yam ntxwv kev taw qhia yuav tsum zoo ib yam los pab txhawb kev txhim kho, vuam thiab tshawb xyuas cov khoom.Yog hais tias electrolytic capacitor zoo ncej, diode zoo ncej, transistor ib tus pin kawg, thawj tus pin ntawm kev sib koom ua ke hauv Circuit Court kev coj ua zoo ib yam li deb tau.Cov kev taw qhia luam ntawv ntawm txhua tus lej feem yog tib yam.
3. Cov khoom loj yuav tsum nyob ib ncig ntawm SMD rework khoom cua sov lub taub hau tuaj yeem ua haujlwm loj.
4. Cov khoom siv cua sov yuav tsum nyob deb ntawm lwm yam khoom raws li qhov ua tau, feem ntau muab tso rau hauv lub ces kaum, lub thawv cua qhov chaw.Cov khoom siv cua sov yuav tsum tau txais kev txhawb nqa los ntawm lwm cov kev coj ua lossis lwm yam kev txhawb nqa (xws li lub dab dej kub) kom muaj qee qhov kev ncua deb ntawm cov khoom siv cua sov thiab cov ntawv luam tawm ntawm lub rooj tsavxwm, nrog qhov tsawg kawg nkaus ntawm 2 hli.Cov khoom siv cua sov txuas cov khoom siv cua sov nrog cov ntawv luam tawm hauv Circuit Court boards hauv multilayer boards.Nyob rau hauv kev tsim, hlau solder pads yog tsim, thiab nyob rau hauv kev ua, solder yog siv los txuas rau lawv, thiaj li hais tias lub tshav kub yog emissions los ntawm cov luam Circuit Court boards.
5. Cov khoom siv kub-sensitive yuav tsum tau khaws cia kom deb ntawm cov khoom siv hluav taws xob.Xws li audions, integrated circuits, electrolytic capacitors thiab qee cov ntaub ntawv yas, yuav tsum nyob deb ntawm tus choj pawg, cov khoom siv hluav taws xob siab, cov hluav taws xob thiab cov hluav taws xob muaj zog.
6. Cov txheej txheem ntawm cov khoom siv thiab qhov chaw uas yuav tsum tau hloov kho lossis feem ntau hloov, xws li potentiometers, adjustable inductance coils, hloov pauv capacitor micro-switches, kev tuav pov hwm cov raj, cov yuam sij, plugers thiab lwm yam khoom, yuav tsum xav txog cov txheej txheem ntawm tag nrho lub tshuab. , thiab muab lawv tso rau hauv ib qho chaw uas yooj yim kho thiab hloov.Yog tias lub tshuab hloov kho, yuav tsum tau muab tso rau ntawm lub rooj tsav xwm luam tawm kom yooj yim hloov qhov chaw;Yog tias nws raug kho sab nraum lub tshuab, nws txoj hauj lwm yuav tsum tau hloov mus rau txoj hauj lwm ntawm kev kho pob qhov rooj ntawm lub chassis vaj huam sib luag kom tsis txhob muaj qhov tsis sib haum xeeb ntawm qhov chaw peb-seem thiab ob-seem.Piv txwv li, lub vaj huam sib luag qhib ntawm lub khawm hloov yuav tsum phim txoj hauj lwm ntawm qhov hloov chaw nyob ntawm lub rooj tsav xwm luam tawm.
7. Lub qhov ruaj khov yuav tsum tau muab tso rau ze ntawm lub davhlau ya nyob twg, ntsaws thiab rub qhov chaw, qhov nruab nrab ntawm lub davhlau ya nyob twg ntev thiab qhov feem ntau raug quab yuam, thiab qhov chaw sib thooj yuav tsum tau nyob ib ncig ntawm lub qhov ruaj khov kom tsis txhob deformation vim thermal expansion.Xws li lub davhlau ya nyob twg ntev thermal expansion yog qhov hnyav dua li cov ntawv luam tawm hauv Circuit Court, yoj soldering nquag ua rau muaj qhov tshwm sim.
8. Rau qee yam khoom thiab qhov chaw (xws li transformers, electrolytic capacitors, varistors, choj stacks, radiators, thiab lwm yam.) nrog rau siab ntev thiab tsis tshua muaj precision, lub caij nyoog ntawm lawv thiab lwm yam khoom yuav tsum tau nce los ntawm ib tug tej yam margin ntawm lub hauv paus. qhov chaw qub.
9. Nws raug pom zoo tias qhov nce ntawm cov kab hluav taws xob electrolytic capacitors, varistors, choj stacks, polyester capacitors thiab lwm yam capacitors yuav tsum tsis pub tsawg tshaj 1 hli, thiab cov transformers, radiators thiab resistors tshaj 5W (xws li 5W) yuav tsum tsis pub tsawg tshaj 3 hli.
10. Lub electrolytic capacitor yuav tsum tsis txhob kov cov khoom siv cua sov, xws li cov hluav taws xob muaj zog, cov thermistor, transformers, radiators, thiab lwm yam. Lub ncua sij hawm ntawm lub electrolytic capacitor thiab lub radiator yuav tsum yog tsawg kawg yog 10 hli, thiab lub caij nyoog ntawm lwm yam khoom thiab radiator yuav tsum yog tsawg kawg yog 20mm.
Post lub sij hawm: Dec-09-2020