Kev tshuaj xyuas ntawm cov khoom siv electroplated yog ib txoj haujlwm tseem ceeb tom qab ua tiav electroplating. Tsuas yog cov khoom siv electroplated uas dhau qhov kev soj ntsuam tuaj yeem raug xa mus rau cov txheej txheem tom ntej rau kev siv.
Feem ntau, cov khoom soj ntsuam rau cov khoom siv electroplated yog: zaj duab xis thickness, adhesion, solder peev xwm, zoo li, ntim, thiab tshuaj tsuag ntsev. Rau cov khoom uas yuav tsum tau tshwj xeeb hauv kev kos duab, muaj cov kev ntsuam xyuas porosity (30U ") rau kub siv cov nitric acid vapor txoj kev, palladium-plated npib tsib xee cov khoom (siv txoj kev gel electrolysis) los yog lwm yam kev ntsuam xyuas ib puag ncig.
1. Electroplating khoom tshuaj xyuas-zaj duab xis thickness tshuaj xyuas
1.Film thickness yog ib yam khoom yooj yim rau electroplating tshuaj xyuas. Cov cuab yeej siv yooj yim yog fluorescent film thickness meter (X-RAY). Lub hauv paus ntsiab lus yog siv X-rays los irradiate lub txheej, sau lub zog spectrum rov qab los ntawm txheej, thiab txheeb xyuas lub thickness thiab muaj pes tsawg leeg ntawm txheej.
2. Kev ceev faj thaum siv X-RAY:
1) Spectrum calibration yog xav tau txhua zaus koj qhib lub computer
2) Ua crosshair calibration txhua hli
3) Kub-nickel calibration yuav tsum tau ua tsawg kawg ib zaug ib lub lim tiam
4) Thaum ntsuas, cov ntaub ntawv xeem yuav tsum raug xaiv raws li cov hlau siv hauv cov khoom.
5) Rau cov khoom tshiab uas tsis muaj cov ntaub ntawv xeem, cov ntaub ntawv xeem yuav tsum tau tsim.
3. Qhov tseem ceeb ntawm cov ntaub ntawv xeem:
Piv txwv li: Au-Ni-Cu(100-221 sn 4%@0.2 cfp
Au-Ni-Cu - Ntsuas cov tuab ntawm nickel plating thiab tom qab ntawd kub plating ntawm tooj liab substrate.
(100-221 sn 4% ——- AMP tooj liab cov khoom siv tooj liab muaj 4% tin)
2. Electroplating khoom tshuaj xyuas-adhesion tshuaj xyuas
Kev tshuaj xyuas adhesion yog ib qho tseem ceeb tshuaj xyuas cov khoom siv electroplating. Cov adhesion tsis zoo yog qhov tsis zoo tshaj plaws hauv kev tshuaj xyuas cov khoom electroplating. Feem ntau muaj ob txoj kev tshuaj xyuas:
1.Bending txoj kev: Ua ntej, siv ib daim ntawv tooj liab nrog tib lub thickness raws li qhov yuav tsum tau kuaj lub davhlau ya nyob twg rau pad qhov chaw yuav tsum tau khoov, siv lub qhov ntswg pliers khoov tus qauv mus rau 180 degrees, thiab siv lub tshuab tsom xam saib seb puas muaj. peeling los yog tev ntawm cov txheej txheem ntawm qhov chaw khoov.
2.Txoj kab xev: Siv 3M daim kab xev nplaum kom ruaj khov rau saum npoo ntawm cov qauv yuav tsum tau kuaj, vertically ntawm 90 degrees, sai sai tshem tawm daim kab xev, thiab saib cov hlau zaj duab xis tev tawm ntawm daim kab xev. Yog tias koj tsis tuaj yeem soj ntsuam kom meej nrog koj ob lub qhov muag, koj tuaj yeem siv 10x microscope los soj ntsuam.
3. Kev txiav txim siab:
a) Yuav tsum tsis txhob poob ntawm cov hmoov hlau los yog nplaum daim kab xev.
b) Yuav tsum tsis txhob tev tawm ntawm cov hlau txheej.
c) Ntev npaum li cov khoom siv hauv paus tsis tawg, yuav tsum tsis muaj qhov tawg loj lossis tev tawm tom qab khoov.
d) Yuav tsum tsis muaj bubbling.
e) Yuav tsum tsis txhob raug cov hlau hauv qab yam tsis muaj cov khoom siv hauv paus tawg.
4. Thaum adhesion tsis zoo, koj yuav tsum kawm paub qhov txawv ntawm qhov chaw ntawm cov txheej txheej. Koj tuaj yeem siv lub tshuab tsom iav thiab X-RAY los ntsuas qhov tuab ntawm cov txheej txheej los txiav txim siab qhov chaw ua haujlwm nrog qhov teeb meem.
3. Electroplating khoom tshuaj xyuas-solderability tshuaj xyuas
1.Solderability yog lub hauv paus muaj nuj nqi thiab lub hom phiaj ntawm tin-lead thiab tin plating. Yog tias muaj cov txheej txheem tom qab soldering, kev vuam tsis zoo yog qhov tsis zoo.
2.Basic txoj kev ntawm solder kuaj:
1) Direct immersion tin method: Raws li cov duab kos, ncaj qha rau ntawm qhov chaw nyob rau hauv qhov xav tau flux thiab muab tso rau hauv lub qhov cub 235-degree. Tom qab 5 vib nas this, nws yuav tsum maj mam muab tawm ntawm qhov ceev ntawm li 25MM / S. Tom qab muab nws tawm, txias rau qhov kub thiab txias thiab siv lub tshuab ntsuas 10x los soj ntsuam thiab txiav txim: thaj chaw tinned yuav tsum muaj ntau dua 95%, thaj chaw tinned yuav tsum du thiab huv, thiab tsis muaj solder rejection, desoldering, pinholes thiab lwm phenomena, uas txhais tau hais tias nws yog tsim nyog.
2) Kev laus ua ntej thiab tom qab vuam. Rau cov khoom siv tshwj xeeb ntawm qee qhov chaw quab yuam, cov qauv yuav tsum muaj hnub nyoog 8 lossis 16 teev siv lub tshuab kuaj kev laus ua ntej kev ntsuas vuam los txiav txim siab qhov ua tau zoo ntawm cov khoom hauv kev siv hnyav. Vuam kev ua tau zoo.
4. Electroplating khoom tshuaj xyuas-zoo li tshuaj xyuas
1.Txoj kev tshuaj ntsuam xyuas yog qhov yooj yim tshuaj xyuas ntawm electroplating tshuaj xyuas. Los ntawm cov tsos, peb tuaj yeem pom qhov tsim nyog ntawm cov txheej txheem electroplating thiab muaj peev xwm hloov pauv hauv cov tshuaj electroplating. Cov neeg siv khoom sib txawv muaj cov kev xav tau sib txawv rau cov tsos. Tag nrho cov electroplated terminals yuav tsum tau soj ntsuam nrog lub tshuab ntsuas qhov tsawg kawg yog 10 npaug ntau dua. Rau qhov tsis xws luag uas tau tshwm sim, qhov kev nthuav dav ntau dua, nws yuav pab tau ntau dua los txheeb xyuas qhov ua rau ntawm qhov teeb meem.
2. Cov kauj ruam soj ntsuam:
1). Nqa cov qauv thiab muab tso rau hauv 10x lub tshuab tsom, thiab teeb tsa nws ntsug nrog cov qauv dawb lub teeb:
2). Saib xyuas qhov chaw ntawm cov khoom los ntawm lub qhov muag.
3. Txoj kev txiav txim:
1). Cov xim yuav tsum tsis sib xws, tsis muaj xim tsaus lossis lub teeb, lossis nrog cov xim sib txawv (xws li blackening, redness, lossis yellowing). Yuav tsum tsis muaj xim sib txawv loj hauv kub plating.
2). Tsis txhob cia tej yam txawv teb chaws (cov plaub hau flakes, plua plav, roj, crystals) lo rau nws
3). Nws yuav tsum tau qhuav thiab yuav tsum tsis txhob stained nrog noo noo.
4). Zoo smoothness, tsis muaj qhov los yog hais.
5). Yuav tsum tsis txhob muaj siab, khawb, khawb thiab lwm yam deformation tshwm sim nrog rau kev puas tsuaj rau cov khoom plated.
6). Cov txheej hauv qab yuav tsum tsis txhob raug. Raws li rau cov tsos ntawm tin-lead, ob peb (tsis ntau tshaj 5%) pits thiab pits raug tso cai tsuav yog nws tsis cuam tshuam rau solderability.
7). Cov txheej yuav tsum tsis txhob muaj blistering, tev los yog lwm yam tsis zoo adhesion.
8). Txoj haujlwm electroplating yuav tsum tau ua raws li cov duab kos. Tus kws ua haujlwm QE tuaj yeem txiav txim siab los so tus qauv kom tsim nyog yam tsis muaj kev cuam tshuam rau kev ua haujlwm.
9). Rau qhov tsis txaus ntseeg qhov tsis xws luag, QE engineer yuav tsum teeb tsa tus qauv txwv thiab cov qauv pabcuam.
5. Electroplating khoom soj ntsuam- ntim tshuaj xyuas
Kev tshuaj xyuas cov khoom ntim khoom electroplating yuav tsum tau ntim cov kev taw qhia kom raug, ntim cov tais thiab cov thawv kom huv si thiab huv si, thiab tsis muaj kev puas tsuaj: cov ntawv sau tiav thiab raug, thiab cov ntawv sau sab hauv thiab sab nraud yog zoo ib yam.
6.Electroplating khoom tshuaj ntsuam xyuas- ntsev tsuag tshuaj ntsuam
Tom qab dhau qhov kev ntsuam xyuas ntsev tsuag, qhov saum npoo ntawm cov khoom tsis tsim nyog electroplated yuav tig dub thiab tsim cov xeb liab. Tau kawg, ntau hom electroplating yuav tsim cov txiaj ntsig sib txawv.
Kev ntsuam xyuas ntsev ntsev ntawm cov khoom siv electroplating tau muab faib ua ob pawg: ib qho yog qhov kev ntsuam xyuas ib puag ncig ntuj; lwm qhov yog cov khoom siv dag zog nrawm simulated ntsev tsuag ib puag ncig kuaj. Kev simulated ntsev tsuag ib puag ncig kev sim yog siv cov cuab yeej ntsuas nrog ib qho chaw ntim - lub tshuab ntsev tsuag tshuaj ntsuam, siv cov txuj ci dag hauv nws qhov chaw ntim los tsim cov ntsev tsuag ib puag ncig los ntsuas cov ntsev tsuag tshuaj tiv thaiv kev ua haujlwm thiab kev ua haujlwm zoo. cov khoom. .
Artificial simulated ntsev tsuag kuaj muaj xws li:
1) Tsis siv neeg ntsev tsuag tshuaj ntsuam (NSS test) yog qhov ntxov tshaj plaws ceev ceev txoj kev kuaj corrosion nrog rau daim ntawv thov dav tshaj plaws. Nws siv 5% sodium chloride ntsev tov, thiab pH tus nqi ntawm cov tshuaj yog hloov mus rau ib tug nruab nrab ntau yam (6 mus rau 7) raws li ib tug tshuaj tsuag. Qhov ntsuas kub yog tag nrho 35 ℃, thiab cov sedimentation tus nqi ntawm ntsev tsuag yuav tsum nyob nruab nrab ntawm 1 ~ 2ml / 80cm?.h.
2) Kev kuaj tshuaj ntsev acetate (ASS test) yog tsim los ntawm kev kuaj tshuaj ntsev nruab nrab. Nws ntxiv qee qhov glacial acetic acid rau 5% sodium chloride tov kom txo cov pH nqi ntawm cov tshuaj mus txog 3, ua rau cov kua qaub acidic, thiab cov ntsev tsuag kuj hloov los ntawm nruab nrab ntsev tsuag rau acidic. Nws tus nqi corrosion yog kwv yees li 3 npaug sai dua qhov kev sim NSS.
3) Cov ntsev tooj liab nrawm nrawm acetate ntsev tsuag tshuaj ntsuam (CASS kuaj) yog kev ntsuas ntsev ntsev sai sai tau tsim tawm txawv teb chaws. Qhov ntsuas kub yog 50 ° C. Ib qho me me ntawm tooj liab ntsev-tooj liab chloride yog ntxiv rau cov ntsev ntsev kom ua rau muaj kev xeb. Nws tus nqi corrosion yog kwv yees li 8 npaug ntawm NSS xeem.
Cov saum toj no yog cov qauv tshuaj ntsuam xyuas thiab kev tshuaj xyuas cov khoom siv electroplated, nrog rau cov khoom siv electroplated zaj duab xis thickness tshuaj xyuas, adhesion tshuaj xyuas, weldability tshuaj xyuas, zoo li tshuaj ntsuam xyuas, ntim tshuaj ntsuam, tshuaj tsuag ntsev,
Post lub sij hawm: Jun-05-2024