Hauv kev tsim khoom siv hluav taws xob, qhov tseeb ntawm kev tsim cov ntawv luam tawm Circuit Board (PCBS) muaj feem cuam tshuam ncaj qha rau kev ua tau zoo thiab zoo ntawm cov khoom siv hluav taws xob. Raws li cov khoom siv tseem ceeb hauv cov txheej txheem drilling, kev ruaj khov ua haujlwm thiab kev ua tiav qhov tseeb ntawm cov khoom siv drilling PCB yog qhov tseem ceeb heev. Ntawm lawv, ib qho tseem ceeb uas feem ntau tsis quav ntsej tab sis tseem ceeb heev - lub hauv paus granite - yog qhov txiav txim siab seb puas tuaj yeem ua kom muaj peev xwm ntawm cov khoom siv tau zoo tshaj plaws.
Cov yam ntxwv zoo ntawm cov granite bases
Kev ruaj khov zoo heev, tiv taus kev cuam tshuam kev co
Thaum lub sijhawm ua cov txheej txheem PCB drilling, lub laum ntsis tig ntawm qhov ceev ceev kom txiav lub rooj tsavxwm, tsim cov kev co tas mus li thiab nyuaj. Lub hauv paus granite, nrog nws cov qauv ntom thiab sib xws tsim los ntawm cov txheej txheem geological ntau pua lab xyoo, muaj kev ua tau zoo heev ntawm av qeeg. Cov granite zoo sawv cev los ntawm "Jinan Green" yog cov qauv tawv thiab tuaj yeem nqus thiab faib cov zog co uas tsim los ntawm kev ua haujlwm ntawm cov khoom siv, ua kom ntseeg tau tias cov khoom siv drilling ruaj khov thaum lub sijhawm ua haujlwm. Piv nrog rau lwm cov khoom siv hauv paus, granite tuaj yeem txo qhov cuam tshuam ntawm kev co rau qhov tseeb ntawm lub laum ntsis, ua rau qhov tseeb ntawm qhov drilling siab dua thiab qhov sib txawv tswj tau hauv qhov me me, ua tau raws li qhov xav tau drilling siab ntawm cov qhov me me thiab cov qhov me me rau cov laug cam PCB siab.
Kev ua kom muaj zog thiab kev hnav tsis kam ua kom muaj kev raug ntev
Kev ua haujlwm tho qhov ntau zaus ua rau muaj kev cov nyom loj rau qhov tsis kam hnav ntawm qhov chaw ntawm lub hauv paus. Qhov nyuaj ntawm Mohs ntawm granite tuaj yeem ncav cuag 6 txog 7, ntau dua li cov hlau feem ntau thiab feem ntau cov yas engineering. Qhov kev ua kom tawv no ua rau lub hauv paus granite tswj tau qhov tiaj tiaj thiab du ntawm nws qhov chaw txawm tias nws raug lub zog thiab kev sib txhuam ntawm lub laum ntev. Txawm tias tom qab ntau qhov haujlwm tho qhov, qhov kev hnav tsis tseem ceeb, yog li ua kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv tho qhov ntev thiab qhov tseeb tho qhov sib xws. Qhov no yog qhov tseem ceeb heev rau cov tuam txhab tsim PCB loj. Nws tuaj yeem txo qhov tsis ua haujlwm ntawm cov khoom siv thiab lub sijhawm txij nkawm uas tshwm sim los ntawm kev hnav ntawm lub hauv paus, txhim kho kev ua haujlwm zoo thiab txo cov nqi tsim khoom tag nrho.
Kev nthuav dav thiab kev cog lus thermal qis, hloov kho tau raws li qhov kub thiab txias hloov pauv
Hauv lub chaw ua PCB, qhov kub thiab txias ntawm ib puag ncig hloov pauv vim muaj tej yam xws li lub caij thiab cov khoom siv cua sov dissipation. Lub hauv paus ua los ntawm cov khoom siv niaj hnub muaj qhov pom tseeb thermal nthuav dav thiab contraction phenomena, uas yuav ua rau muaj kev hloov pauv ntawm qhov chaw sib piv ntawm cov khoom siv thiab yog li cuam tshuam rau qhov tseeb ntawm drilling. Granite muaj qhov coefficient qis heev ntawm thermal nthuav dav. Piv txwv li, qhov coefficient linear nthuav dav ntawm granite niaj hnub yog kwv yees li 4.6 × 10⁻⁶ / ℃. Thaum qhov kub hloov pauv, qhov loj ntawm lub hauv paus granite tseem yuav luag tas li, muab lub hauv paus ruaj khov thiab txhim khu kev qha rau cov khoom siv drilling. Txawm hais tias nyob rau lub caij ntuj sov kub lossis lub caij ntuj no txias, cov khoom siv tuaj yeem tswj tau qhov siab-precision drilling xeev, xyuas kom meej qhov sib xws ntawm drilling zoo rau ntau pawg ntawm cov khoom PCB.
Kho cov txheej txheem ntawm cov khoom siv drilling PCB
Kev teeb tsa thiab kev teeb tsa kom raug yog lub hauv paus rau qhov tseeb
Thaum lub sijhawm ua cov granite base, los ntawm kev txiav thiab sib tsoo pob zeb diamond siab heev, qhov tiaj tiaj thiab qhov tseeb ntawm qhov loj me tuaj yeem ua tiav. Piv txwv li, qhov kev kam rau siab ntawm cov granite bases siab hauv 1m × 1m tuaj yeem tswj tau kom tsis pub ntau tshaj 4μm. Qhov no ua rau cov khoom siv drilling raug teeb tsa sai thiab raug raws li lub dav hlau thiab qhov chaw ntawm lub hauv paus, nrog rau qhov sib txawv ntawm kev teeb tsa tsawg kawg nkaus ntawm txhua qhov khoom. Kev teeb tsa thiab qhov chaw raug muab kev lees paub rau kev txav mus los ntawm lub laum thaum lub sijhawm ua haujlwm tom qab ntawm cov khoom siv, txhim kho qhov tseeb ntawm qhov drilling los ntawm qhov chaw thiab txo cov teeb meem xws li qhov chaw sib txawv thiab qhov tsis sib xws ntawm cov qhov uas tshwm sim los ntawm kev teeb tsa cov khoom siv tsis raug.
Txhim kho qhov ruaj khov ntawm cov qauv thiab txhim kho kev ruaj khov ntawm kev ua haujlwm
Thaum cov khoom siv PCB drilling ua haujlwm, ntxiv rau nws tus kheej kev co, nws kuj tseem yuav raug cuam tshuam los ntawm kev thauj mus los sab nraud, cov plag tsev tsis sib xws thiab lwm yam. Lub hauv paus granite muaj qhov ceev ceev thiab muaj zog rigidity. Tom qab ua ke nrog cov qauv tseem ceeb ntawm cov khoom siv, nws tuaj yeem txhim kho qhov ruaj khov ntawm tag nrho cov khoom siv. Thaum cov khoom siv raug kev cuam tshuam los ntawm lub zog sab nraud lossis kev co, lub hauv paus granite tuaj yeem faib cov zog cuam tshuam nrog nws tus kheej muaj zog rigidity, tiv thaiv cov khoom tseem ceeb ntawm cov khoom siv los ntawm kev hloov chaw lossis deforming vim lub zog tsis sib xws, thiab ua kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv nyob rau hauv cov xwm txheej ua haujlwm nyuaj. Lub xeev ua haujlwm ruaj khov pab txuas lub neej kev pabcuam ntawm cov khoom siv thiab muab ib puag ncig ua haujlwm ruaj khov thiab txhim khu kev qha rau kev drilling zoo tib lub sijhawm.
Cov nyhuv ntawm daim ntawv thov kev tsim khoom tiag tiag
Kev tsim PCB rau cov khoom siv hluav taws xob
Hauv kev tsim cov PCBS rau cov khoom siv hluav taws xob xws li xov tooj ntse thiab cov khoos phis tawj ntsiav tshuaj, qhov yuav tsum tau ua kom raug yog siab heev. Tom qab lub tuam txhab tsim khoom siv hluav taws xob paub zoo tau qhia txog cov khoom siv PCB drilling uas muaj cov hauv paus granite, cov khoom tsim tau nce ntxiv los ntawm 80% mus rau ntau dua 90%. Cov teeb meem xws li kev sib txuas kab tsis zoo thiab luv luv Circuit Court los ntawm kev ua kom raug tsis txaus tau raug txo qis heev. Lub caij no, vim yog lub hauv paus granite txo qhov zaus ntawm kev saib xyuas cov khoom siv, lub peev xwm tsim khoom txhua hli ntawm lub tuam txhab no tau nce ntxiv 20%, ua rau tus nqi tsim khoom ib yam khoom txo qis thiab yeej tus nqi thiab qhov zoo hauv kev sib tw ua lag luam hnyav.
Kev tsim cov PCBs ntawm cov tswj hwm kev lag luam
Qhov chaw ua haujlwm ntawm cov laug cam tswj kev lag luam nyuaj heev, thiab cov kev cai ntawm kev ntseeg tau rau PCBS yog nruj heev. Ib lub tuam txhab tshwj xeeb hauv kev tsim cov laug cam tswj kev lag luam tau pom qhov nce ntxiv ntawm qhov dhau ntawm nws cov laug cam PCB hauv kev sim ib puag ncig hnyav xws li kub siab thiab av noo siab tom qab siv cov khoom siv drilling nrog cov hauv paus granite. Kev ruaj khov ntawm kev ua haujlwm ntawm cov khoom siv ua rau qhov zoo ntawm kev drilling txhim khu kev qha dua, muab kev lees paub zoo rau kev ua haujlwm ruaj khov mus sij hawm ntev ntawm pawg thawj coj tswj kev lag luam. Nrog cov khoom lag luam zoo, lub tuam txhab tau ua tiav qhib ntau lub khw muag khoom lag luam siab, thiab nws qhov kev lag luam tau nthuav dav tas li.
Cov hauv paus granite, nrog lawv qhov ruaj khov zoo heev, qhov nyuaj siab thiab kev tiv thaiv kev hnav, nrog rau qhov tsis tshua muaj thermal nthuav dav thiab kev cog lus, ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub peev xwm ntawm cov khoom siv drilling PCB. Los ntawm kev teeb tsa thiab kev tso chaw kom raug mus rau kev txhim kho qhov ruaj khov ntawm cov khoom siv, thiab nws cov kev ua tau zoo hauv ntau qhov xwm txheej tsim khoom tiag tiag, txhua tus tau ua pov thawj tag nrho nws qhov tseem ceeb hauv kev txhim kho qhov tseeb ntawm kev drilling thiab kev ua haujlwm ntawm PCBS. Ntawm txoj kev nrhiav kev ua haujlwm siab dua thiab kev ua haujlwm zoo dua hauv kev tsim PCB, lub hauv paus granite yog qhov tseem ceeb rau kev qhib lub peev xwm siab tshaj plaws ntawm cov khoom siv drilling PCB, thiab nws tsim nyog tau txais kev saib xyuas siab thiab kev siv dav ntawm ntau lub tuam txhab tsim khoom siv hluav taws xob.
Lub sijhawm tshaj tawm: Lub Rau Hli-10-2025