Vim li cas cov tshuaj pleev xim rau ntawm lub rooj tsav xwm Circuit Court?

1. Cov xim peb-pov thawj yog dab tsi?

Peb cov tshuaj tiv thaiv xim yog ib qho tshwj xeeb ntawm cov xim pleev xim, siv los tiv thaiv Circuit Court boards thiab lwm yam khoom siv los ntawm ib puag ncig yaig. Cov xim peb-pov thawj muaj qhov ua haujlwm zoo rau qhov kub thiab txias; Nws tsim cov yeeb yaj kiab tiv thaiv pob tshab tom qab kho, uas muaj cov rwb thaiv tsev zoo, noo noo tsis kam, tiv thaiv to, poob siab tsis kam, plua plav tsis kam, tiv thaiv corrosion, kev laus tiv thaiv, corona tsis kam thiab lwm yam khoom.

Raws li cov xwm txheej tiag tiag, xws li tshuaj lom neeg, kev vibration, hmoov av siab, tshuaj tsuag ntsev, av noo thiab kub, lub rooj tsav xwm hauv Circuit Court tej zaum yuav muaj corrosion, softening, deformation, mildew thiab lwm yam teeb meem, uas yuav ua rau lub Circuit Court malfunction.

Cov xim peb-pov thawj yog coated rau saum npoo ntawm lub rooj tsav xwm hauv Circuit Court los tsim ib txheej ntawm peb-cov pov thawj tiv thaiv zaj duab xis (peb-pov thawj yog hais txog kev tiv thaiv dej noo, tshuaj tiv thaiv ntsev thiab tshuaj tiv thaiv mildew).

2, cov specifications thiab yuav tsum tau ntawm peb cov txheej txheem los tiv thaiv xim

Painting xav tau:
1. Txau xim thickness: cov xim zaj duab xis thickness yog tswj nyob rau hauv 0.05mm-0.15mm. Cov zaj duab xis qhuav yog 25um-40um.

2. Cov txheej txheem thib ob: txhawm rau ua kom cov khoom tuab ntawm cov khoom muaj kev tiv thaiv siab, cov txheej txheem thib ob tuaj yeem ua tau tom qab cov xim pleev xim tau kho (txiav txim siab seb puas yuav ua cov txheej txheem thib ob raws li qhov yuav tsum tau ua).

3. Kev tshuaj xyuas thiab kho: pom qhov muag saib seb lub rooj tsav xwm txheej txheej puas ua tau raws li qhov yuav tsum tau ua, thiab kho qhov teeb meem. Piv txwv li, yog tias cov pins thiab lwm qhov chaw tiv thaiv yog stained nrog peb-pov thawj xim, siv cov tweezers los tuav lub pob paj rwb los yog cov paj rwb huv si dipped rau hauv lub tshuab ntxhua khaub ncaws dej los ntxuav nws. Thaum txhuam, ceev faj tsis txhob ntxuav tawm cov xim zoo li qub.

4. Hloov cov khoom siv: Tom qab cov xim pleev xim tau kho, yog tias koj xav hloov cov khoom, koj tuaj yeem ua raws li hauv qab no:

(1) solder lub Cheebtsam ncaj qha nrog hluav taws xob chromium hlau, thiab tom qab ntawd siv ib daim ntaub paj rwb dipped hauv board dej los ntxuav cov khoom nyob ib ncig ntawm lub ncoo
(2) Vuam lwm yam khoom
(3) Siv txhuam txhuam los txhuam cov xim peb-pov thawj los txhuam qhov vuam, thiab ua rau cov xim pleev xim rau saum npoo kom qhuav thiab khov.

Cov kev xav tau ntawm kev ua haujlwm:
1. Qhov chaw ua haujlwm ntawm peb cov ntaub ntawv pov thawj yuav tsum tsis muaj plua plav thiab huv si, thiab yuav tsum tsis muaj plua plav ya. Kev ua pa zoo yuav tsum tau muab thiab cov neeg ua haujlwm tsis cuam tshuam raug txwv tsis pub nkag mus.

2. Hnav lub qhov ncauj qhov ntswg los yog roj qhov ncauj qhov ntswg, hnab looj tes roj hmab, tshuaj tiv thaiv tsom iav thiab lwm yam khoom siv tiv thaiv thaum ua haujlwm kom tsis txhob raug mob rau lub cev.

3. Tom qab ua haujlwm tiav, ntxuav cov cuab yeej siv hauv lub sijhawm, thiab kaw thiab nruj nreem npog lub thawv nrog cov xim peb-pov thawj.

4. Kev ntsuas tiv thaiv zoo li qub yuav tsum tau ua rau lub rooj tsav xwm hauv Circuit Court, thiab lub rooj tsav xwm hauv Circuit Court yuav tsum tsis txhob sib tshooj. Thaum lub sij hawm txheej txheem txheej, lub Circuit Court boards yuav tsum tau muab tso rau horizontally.

Cov kev xav tau zoo:
1. Qhov saum npoo ntawm lub rooj tsavxwm Circuit Court yuav tsum tsis txhob muaj xim ntws los yog poob. Thaum cov xim pleev xim rau, nws yuav tsum tsis txhob poob rau ntawm ib feem ntawm qhov sib cais.

2. Cov xim txheej peb-pov thawj yuav tsum tiaj tus, ci ntsa iab, tsis sib xws hauv tuab, thiab tiv thaiv qhov chaw ntawm lub ncoo, thaj tiv thaiv lossis tus neeg xyuas pib.

3. Qhov saum npoo ntawm cov xim txheej thiab cov khoom yuav tsum tsis txhob muaj qhov tsis xws luag xws li npuas, pinholes, ripples, shrinkage qhov, plua plav, thiab lwm yam. thiab cov khoom txawv teb chaws, tsis muaj chalking, tsis muaj tev tshwm sim, nco ntsoov: ua ntej cov xim zaj duab xis qhuav, ua tsis txhob kov cov xim ntawm lub siab xav membrane.

4. Ib feem ntawm cov khoom sib cais lossis cov cheeb tsam tsis tuaj yeem coated nrog peb-pov thawj xim.

3. Cov khoom thiab cov khoom siv uas tsis tuaj yeem coated nrog cov xim tsis sib xws

(1) Cov khoom siv uas tsis yog-coatable: pleev xim rau lub zog hluav taws xob, lub dab dej kub, lub zog hluav taws xob, lub zog siab diode, cement resistor, code hloov, potentiometer (adjustable resistor), buzzer, roj teeb tuav, fuse tuav, IC sockets, lub teeb kov keyboards, relays thiab lwm yam ntawm cov qhov (socket), tus pin headers, davhlau ya nyob twg blocks thiab DB9, plug-in los yog SMD lub teeb-emitting diodes (tsis qhia txog kev ua haujlwm), cov hlab ntsha, hauv av ntsia hlau qhov.

(2) Cov khoom thiab cov khoom siv tau teev tseg los ntawm cov duab kos uas tsis tuaj yeem siv nrog peb-pov thawj xim.
(3) Raws li "Catalogue of Non-Three-proof Cheebtsam (Tebchaws)", nws tau teev tseg tias cov khoom siv nrog peb-pov thawj xim tsis tuaj yeem siv.

Yog tias cov khoom siv tsis sib xws hauv cov kev cai yuav tsum tau coated, lawv tuaj yeem raug coated los ntawm peb-pov thawj txheej teev los ntawm R & D department lossis cov duab kos.

Plaub, kev ceev faj ntawm peb cov txheej txheem tshuaj tua kab mob yog raws li hauv qab no

1. Lub PCBA yuav tsum tau ua nrog ib tug crafted ntug thiab qhov dav yuav tsum tsis txhob tsawg tshaj li 5 hli, kom nws yooj yim mus taug kev ntawm lub tshuab.

2. Qhov siab tshaj plaws ntev thiab dav ntawm PCBA board yog 410 * 410mm, thiab qhov tsawg kawg nkaus yog 10 * 10mm.

3. Qhov siab tshaj plaws ntawm PCBA mounted Cheebtsam yog 80mm.

4. Qhov kev ncua deb tsawg kawg nkaus ntawm thaj chaw txau thiab thaj chaw tsis muaj tshuaj tsuag ntawm cov khoom ntawm PCBA yog 3 hli.

5. Kev tu kom huv tuaj yeem ua kom ntseeg tau tias cov corrosive residues raug tshem tawm tag nrho, thiab ua kom cov xim peb-pov thawj nyob rau saum npoo ntawm lub rooj tsav xwm Circuit Court kom zoo. Cov xim tuab yog nyiam dua ntawm 0.1-0.3mm. Ci tej yam kev mob: 60 ° C, 10-20 feeb.

6. Thaum lub sij hawm txau, qee yam tsis tuaj yeem txau, xws li: lub zog hluav taws xob hluav taws xob hluav taws xob los yog cov khoom siv hluav taws xob, lub zog hluav taws xob, lub zog diodes, cement resistors, dial switches, adjustable resistors, buzzers, roj teeb tuav, tuav pov hwm (tube) , IC tuav, kov hloov, thiab lwm yam.
V. Taw qhia txog Circuit Board tri-proof xim rework

Thaum lub rooj tsav xwm Circuit Court yuav tsum tau kho, cov khoom kim heev ntawm lub rooj tsav xwm Circuit Court tuaj yeem muab cais tawm thiab cov seem tuaj yeem muab pov tseg. Tab sis txoj kev siv ntau tshaj yog tshem tawm cov yeeb yaj kiab tiv thaiv ntawm tag nrho lossis ib feem ntawm lub rooj tsav xwm Circuit Court, thiab hloov cov khoom puas ntawm ib qho los ntawm ib qho.

Thaum tshem tawm cov yeeb yaj kiab tiv thaiv ntawm cov xim peb-pov thawj, xyuas kom meej tias lub substrate nyob rau hauv cov khoom, lwm yam khoom siv hluav taws xob, thiab cov qauv nyob ze ntawm qhov chaw kho yuav tsis puas. Cov txheej txheem tiv thaiv kev tshem tawm cov yeeb yaj kiab feem ntau suav nrog: siv cov tshuaj hnyav, micro sib tsoo, cov txheej txheem siv tshuab thiab desoldering los ntawm cov yeeb yaj kiab tiv thaiv.

Kev siv cov kuab tshuaj lom neeg yog txoj kev siv ntau tshaj plaws los tshem tawm cov yeeb yaj kiab tiv thaiv ntawm cov xim peb-pov thawj. Qhov tseem ceeb nyob rau hauv cov khoom siv tshuaj ntawm cov yeeb yaj kiab tiv thaiv kom tshem tawm thiab cov khoom siv tshuaj lom neeg ntawm cov kuab tshuaj tshwj xeeb.

Micro-sib tsoo siv high-speed particle ejected los ntawm lub nozzle rau "sib tsoo" cov ntaub ntawv tiv thaiv zaj duab xis ntawm peb-pov thawj xim ntawm lub Circuit Court board.

Cov txheej txheem kev siv tshuab yog qhov yooj yim tshaj plaws los tshem tawm cov yeeb yaj kiab tiv thaiv ntawm cov xim peb-pov thawj. Desoldering los ntawm cov yeeb yaj kiab tiv thaiv yog thawj zaug qhib lub qhov dej hauv cov yeeb yaj kiab tiv thaiv kom tso cai rau cov molten solder tawm.