Lub luag haujlwm ntawm metallographic microscopes hauv tus txheej txheem tswj ntawm PCB Board Technology
1. Lub luag haujlwm ntawm Mouldographic tsom rau cov txheej txheem tswj ntawm PCB slicing thev naus laus zis
Kev tsim cov pcb cov laug cam yog txheej txheem ntawm ntau cov txheej txheem sib koom tes nrog lwm tus. Qhov zoo tshaj ntawm cov khoom hauv cov txheej txheem yav dhau los cuam tshuam rau kev tsim cov khoom hauv cov txheej txheem tom ntej, thiab txawm tias cuam tshuam rau qhov zoo ntawm cov khoom kawg. Yog li, kev tswjhwm zoo ntawm cov txheej txheem tseem ceeb ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov zoo ntawm cov khoom kawg. Raws li ib qho ntawm cov txheej txheem kuaj pom, cov tshuab ntsuas ntawm cov thev naus laus zis yog ua si lub luag haujlwm tseem ceeb hauv daim teb no.
Lub luag haujlwm ntawm Mouldographic tsom rau cov txheej txheem tswj ntawm PCB Slicing thev naus laus zis suav nrog cov hauv qab no
2.1 ua haujlwm hauv cov khoom siv cov khoom xa tuaj kuaj xyuas
Qhov zoo ntawm tus tooj liab-clad laminates yuav tsum kom muaj ntau-txheej pcb ntau lawm yuav cuam tshuam ncaj qha rau kev tsim cov ntau txheej pcb laug cam. Cov ntaub ntawv tseem ceeb hauv qab no tuaj yeem tau txais los ntawm cov hlais coj los ntawm kev ntsuas me me ntawm daim tawv me:
2.1.1 tooj liab ntawv ci thickness, tshuaj xyuas seb tooj liab ntawv ci thickness tau raws li kev tsim cov khoom siv ntau-cov txheej txheem tshuab ntau tshaj.
2.1.2 tuab ntawm rwb thaiv tsev txheej thiab kev npaj ntawm Semi cov ntawv kho.
2.1.3 Qhov ntev thiab Latitudinal kev npaj ntawm khob fibers thiab resin cov ntsiab lus hauv insulating xov xwm.
2.1.4 Cov ntaub ntawv tsis xws ntawm Laminated daim hlau muaj feem ntau hom kev tsis xws luag hauv Laminated daim hlau:
(1) pinhole
Lub qhov me me uas tiav rau cov txheej txheej hlau. Rau zus tau tej cov-txheej luam tawm ntau cov laug cam nrog cov khoom siv hluav taws kub siab, qhov tsis xws luag feem ntau tsis tso cai.
(2) pitts thiab dents
Pitting hais txog cov qhov me me uas tsis tau nkag rau hauv cov ntawv ci hlau: concave pits xa mus rau qhov kev siv cov phiaj xwm sib tsoo hauv zos thaum cov txheej txheem nias. Lub xub ntiag ntawm qhov tsis tuaj yeem txiav txim siab los ntawm kev ntsuas qhov loj me ntawm lub qhov me me thiab qhov tob ntawm kev sib tw ntawm daim hlau me me.
(3) khawb
Txav hais txog kev ua kom zoo thiab ntiav grooves kos rau saum npoo tooj liab ntawv ci los ntawm cov khoom ntse. Ntsuas qhov dav thiab qhov tob ntawm khawb hauv hlau ntawm daim hlau metcampe slicing los txiav txim siab seb lub hav zoov puas tau tso cai.
(4) wrinkles thiab folds
Wrinkles xa mus rau cov pob lossis pob ntawm tooj liab ntawv ci saum npoo ntawm lub siab phaj. Lub xub ntiag ntawm qhov tsis xws luag no tsis raug tso cai raws li tuaj yeem pom los ntawm daim duab qhia chaw.
(5) Laminated voids, dawb me me, thiab npuas
Laminated Voids txog cov cheeb tsam uas yuav tsum muaj resin thiab adhesive hauv cov laminated board, tab sis cov puv yog tsis tiav thiab muaj thaj chaw uas ploj lawm; Cov kab dawb yog qhov tshwm sim uas tshwm sim hauv qab ntawm cov ntaub ntawv ntawm cov ntaub ntawv tsis zoo lossis "cov qauv hla" hauv qab ntawm lub substrate; Bubbling hais txog qhov tshwm sim ntawm kev nthuav dav hauv zos thiab sib cais ntawm cov khaubncaws sab nraud povtseg ntawm cov txheej txheem lossis hauv cov ntawv ci thiab cov ntawv luam tawm tooj liab. Lub neej ntawm xws li tsis xws li yog nyob ntawm qhov xwm txheej tshwj xeeb los txiav txim siab seb lawv puas raug tso cai.
