Qhov tseem ceeb ntawm txhav saj zawg zog PCB tsis tuaj yeem suav nrog hauv kev tsim PCB. Ib qho laj thawj yog qhov kev hloov pauv mus rau qhov me me. Ib qho ntxiv, kev thov kom nruj PCBS tau nce vim qhov yooj thiab ua haujlwm ntawm 3D sib dhos. Txawm li cas los xij, tsis yog txhua tus neeg tsim khoom lag luam PCB muaj peev xwm ua tau raws txoj kev hloov pauv yooj yim thiab nruj PCB tsim cov txheej txheem. Ib nrab-hloov pauv cov laug cam tau tsim los ntawm cov txheej txheem uas txo cov tuab ntawm lub rooj tsav tsheb nruj rau 0.25mm +/- 0.05mm. Qhov no, nyeg, tso cai rau siv lub rooj tsavxwm hauv daim ntawv thov uas xav tau khoov lub rooj tsavxwm thiab teeb tsa nws sab hauv tsev. The plate can be used for one-time bending installation and multi-bending installation.

Nov yog cov ntsiab lus ntawm qee tus cwj pwm uas ua rau nws txawv:

FR4 ib nrab – hloov pauv tus yam ntxwv PCB

L Cov cwj pwm tseem ceeb tshaj plaws uas ua haujlwm zoo tshaj plaws rau koj tus kheej siv yog tias nws yoog raws thiab tuaj yeem hloov kho rau qhov chaw muaj.

L Nws qhov kev ua tau zoo tau nce ntxiv los ntawm qhov tseeb tias nws hloov pauv tsis cuam tshuam nws cov teeb liab xa mus.

L Nws kuj yog qhov hnyav.

Feem ntau, ib nrab hloov pauv PCBS kuj tseem paub txog lawv cov nqi zoo tshaj vim tias lawv cov txheej txheem tsim khoom tau sib xws nrog cov peev txheej tsim khoom uas twb muaj lawm.

L Lawv txuag ob lub sijhawm tsim thiab sijhawm sib dhos.

L Lawv yog cov kev xaiv uas tsis tshua muaj neeg ntseeg tau, tsis yog yam tsawg kawg vim tias lawv zam ntau yam teeb meem, suav nrog kev cuam tshuam thiab vuam.

PCB txheej txheem

The main manufacturing process of FR4 semi-flexible printed circuit board is as follows:

Cov txheej txheem feem ntau suav nrog cov hauv qab no:

L Khoom txiav

L Qhuav zaj duab xis txheej

L Kev kho qhov muag kho qhov muag

L Browning

L laminated

L X-ray xeem

L qhov drilling

L electroplating txheej txheem

L Kev hloov dua siab tshiab

L ntawv

L Screen luam ntawv

L Raug thiab txhim kho

L Nto tiav

L Qhov tob tswj milling

L Kev ntsuas hluav taws xob

L Kev tswj kom zoo

L ntim

Cov teeb meem thiab cov kev daws teeb meem hauv PCB tsim yog dab tsi?

Qhov teeb meem tseem ceeb hauv kev tsim khoom yog kom ntseeg tau qhov tseeb thiab qhov tob tswj milling tolerances. Nws tseem yog ib qho tseem ceeb kom ntseeg tau tias tsis muaj cov pob zeb tawg lossis cov roj ua kom tawg uas tuaj yeem ua rau muaj teeb meem zoo. Qhov no suav nrog txheeb xyuas cov hauv qab no thaum lub sijhawm tswj qhov tob milling:

L tuab

L Cov ntsiab lus Resin

L Milling kam rau ua

Qhov tob tswj milling xeem A

Thickness milling tau ua los ntawm txoj kev ua qauv kom ua tau raws li cov tuab ntawm 0.25 hli, 0.275 hli thiab 0.3 hli. Tom qab lub rooj tsavxwm raug tso tawm, nws yuav raug tshuaj xyuas seb nws puas tuaj yeem tiv taus 90 degree khoov. Feem ntau, yog tias qhov tuab ntxiv yog 0.283mm, iav fiber ntau tau txiav txim siab puas. Therefore, the thickness of the plate, the thickness of the glass fiber and the dielectric condition must be taken into account when conducting deep milling.

Qhov tob tswj milling xeem B

Raws li cov lus saum toj no, nws yog qhov tsim nyog los xyuas kom muaj tooj liab tuab ntawm 0.188mm txog 0.213mm nruab nrab ntawm txheej txheej txheej txheej thiab L2. Kev saib xyuas kom raug kuj yuav tsum tau ua rau txhua qhov kev ua rog uas yuav tshwm sim, cuam tshuam rau qhov tuab tuab tag nrho.

Qhov tob tswj milling xeem C

Kev tswj qhov tob milling yog ib qho tseem ceeb kom ntseeg tau tias qhov ntev tau teev rau 6.3 “x10.5” tom qab cov qauv vaj huam sib luag raug tso tawm. After this, survey point measurements are taken to ensure that 20 mm vertical and horizontal intervals are maintained.

Special fabrication methods ensure that the depth control thickness tolerance is within ±20μm.