Yuav ua li cas los daws qhov teeb meem ntawm stencil printing liab hnab yas?
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
Yog xav paub ntxiv, thov mus saib
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Ua ntej, cov txuj ci yooj yim ntawm cov hlau Mesh SMT thaj xim liab: xim roj hmab roj hmab yog muab faib rau hauv kev txhais tes los ntawm cov khoom siv roj hmab thiab cov khoom siv khoob nyiab roj hmab (lub tshuab khawb tseg muab faib ua cov khoom siv roj hmab tsis rub tawm, cov roj hmab tsis zoo tuaj). Tib xim liab yog nyob rau tib lub thickness steel mesh. Vim hais tias ntawm qhov txawv slit widths, qhov siab ntawm cov roj hmab nplhaib glue ntsiab lus tsis zoo li qub.
Qhov thib ob, cov hlau hlau Mesh SMT thaj thaj liab yas mesh khoom yog tsuas yog hlau phaj, ntxiv rau yas mesh phaj, tooj liab mesh phaj. Lub thickness ntawm cov hlau mesh phaj yog feem ntau ntawm 0.15 thiab 0.20 hli, qhov dav ntawm 0603 tivthaiv yog 0.25 rau 0.28 hli, qhov 0805 tivthaiv yog 0.30 rau 0.33 hli, thiab ntev ntev yog li 10% ntawm lub qhov ntev ntev.
Thib peb, txoj kev ceev ntawm cov hlau ntxa SMT thaj xim kua nplaum yog teem raws li cov viscosity ntawm cov kua liab. Qhov siab dua qhov siab, qhov qeeb qeeb ceev, txo qhov siab, qhov ceev ceev, qhov ceev yog 0.5 cm ~ 8cm / Sec yog qhov qub. Tsuav nws tuaj yeem lav tau qhov kev txi ntawm cov roj hmab txhuam hniav siv. Nyob rau tib lub sij hawm, qhov ceev ceev ntawm kev zais ntsej muag kuj tseem ceeb nrog rau kev sib tw ntawm pawg thawj coj. Cov roj hmab khawm liab kuj yuav raug kho raws li cov xim ntawm cov roj hmab liab. Lub sijhawm ua haujlwm yuav txav tau cov roj hmab liab ntawm cov hlau ntxaij tom qab khawb qhov scraper.
Qeb plaub, kev ntsuam xyuas ntawm cov teeb meem uas muaj teeb meem ntawm hlau hlau SMT thaj xim liab:
Copper mesh SMT thaj cov kua nplaum liab feem ntau yog pib ua ntej luam ntawv kom txo nws cov viscosity thiab pab txhawb kev luam ntawv liab. Nyob rau hauv cov yas yas luam ntawv, lub hlau mesh yuav tsum tau ntxuav nquag.
1. Txiav tshaj: Vim tsis muaj viscosity ntawm kua nplaum liab los yog dav loj ntawm lub hlau ntxaij.
2, lub tshuab tsis khawb qhov khawb ntawv: nws yuav yog vim qhov khib nyiab ntawm qhov khib nyiab heev los sis qhov muaj feem xyuam ntawm cov roj hmab liab tsawg dhau; los yog kub kub tsis txaus; cov roj hmab hnia roj hmab yog qhov siab tshaj.
3, cov kua nplaum yog tsawg heev: feem ntau cov hlau ntxa qhov dav hlau me me los yog cov hlau mesh tsis huv, tau thaiv qhov.
4, xim liab cev qhuav dej: nws yog vim cov neeg pluag tsis muaj zog thixotropy; los yog cov dej noo nqus tau sai heev.
Ua ntej, cov kev taw qhia txog hlau ntxa SMT thaj xim liab:
Hauv cov txheej txheem liab qab, ntau lub tsev txhab nyiaj tau siv cov kua nplaum los yog cov 0.2-0.3mm stencil luam tawm liab yas. Txawm li cas los xij, rau cov khoom uas yuav tsum tau muab nws tus kheej tso rau thiab tom qab ntawd ces muab tshuaj txhuam thiab muaj ntau qhov chaw tso kawm. Qhov kev ua kom tiav ntawm cov neeg tau txais kev pab yog qhov tsawg tsawg thiab cov stencil luam tsis tiav. Tau kawg, qee cov zauv xaiv xaiv nruab nti thawj zaug thiab tom qab muab qhov khoom pov thawj, yog li ntawd lub chip feem ua rau muaj kev phom sij ntawm kev ntxhov siab thiab ntog feem thaum thaum tivthaiv tso.
Qhov ob, cov hlau ntxa hlau SMT thaj xim liab txheej txheem yuav tsum muaj thiab siv ceev faj
Tus txheej txheem ntawm cov kua nplaum nplaum ua kua yog: txheej lo, ib thaj, ib qho kev tua, ib qho yoj tes yoj thiab ib qho tu. Cov nram qab no piav qhia txog cov kua nplaum liab nyob rau hauv kev nthuav dav.
Hlau Mesh SMT thaj xim liab yas ua ntej tua
Cov kua nplaum liab yog muab tso rau hauv ib qho kev tivthaiv nkaus xwb, thiab yuav tsum muaj kev ruaj khov, lub neej ntev, zoo zoo, tsis muaj tshuaj lom thiab tsis qab, thiab tsim nyog rau kev siv ceev thiab yooj yim. Txij li cov mounted yam tsawg heev, lub kua nplaum liab feem ntau yog siv rau qhov chaw ntawm ob lub pawm. Nws feem ntau coated nyob rau hauv PCB los ntawm cov kabmob khib nyiab luam ntawv, siab dispensing, thiab lwm yam. Yog li, nws yuav tsum tau hais tias cov kua nplaum liab tsis coated. Kev txhuam, tsis muaj tailing, cov duab thiab qhov loj ntawm cov npluas nplaum yog zoo ib yam, du, tag nrho thiab tsis collapsed.