1. Lub luag hauj lwm ntawm daim nplaum nplaum nplaum nplaum (SMA, surfacemountadhesives) rau cov yawm suab thiab lub tsho rov qab, siv cov khoom sab nraud ntawm lub Rooj Tswjhwm Saib Xyuas Circuit Court, kev siv cov dispensing lossis stencil luam tawm txoj kev xa lub Rooj Tsav Xwm (Circuit Board Circuit Board) (PCB) los xyuas kom meej tias cov khoom tsis tau poob thaum lub sij hawm kis tau ntawm cov kab sib dhos. Muab cov khoom coj los tso rau hauv qhov cub los yog lub tshuab cua sov ua kom sov. Nws tsis zoo ib yam nrog lub khob tshuaj yej, ib zaug heated thiab hardened, thiab tom qab ntawd ces cua kub yuav tsis qhuav, uas yog, zaj duab xis kub kub txheej txheem yog irreversible. Cov nyhuv ntawm SMT thaj yuav sib txawv nyob ntawm seb lub tshav kub kub, qhov txuas, cov khoom siv, thiab Kev Siv Chaw. Thaum siv raws li txoj kev tsim cov khoom tsim los xaiv cov kua nplaum.
2. Cov lus sib sau ntawm daim nplaum PCB sib dhos uas siv rau hauv feem ntau ntawm daim nplaum nplaum (SMA) yog epoxy (epoxies), tab sis muaj polypropylene (acrylics) rau cov hom phiaj tshwj xeeb. Nyob hauv cov kev taw qhia ntawm high-speed Dijiao system thiab electronics kev lag luam los npaj yuav ua li cas nrog luv luv txee lub neej ntawm cov khoom, lub epoxy resin tau ua lub ntiaj teb ntau lub ntsiab lus glue technology. Epoxy resins feem ntau muab kev nplua zoo rau ntau yam ntawm Circuit Court boards thiab muaj hluav taws xob zoo heev. Cov khoom xyaw tseem ceeb yog: cov ntaub ntawv (uas yog, cov khoom siv tseem ceeb), muab tub lim, cov neeg ua haujlwm, thiab lwm yam khoom siv.
3. Kev siv cov kua nplaum lub hom phiaj a. Kev yoj ib txoj kab los tiv thaiv kev tivthaiv kabmob (yoj laug lub txheej txheem) b. Rov qab los tiv thaiv lwm sab ntawm lub Cheebtsam tawm (ob-sided reflow txheej txheem) c. Txhawm rau tiv thaiv kev tshem tawm thiab kev cai (Rov ua dua, txheej txheej txheej txheem) d. Rau kev kos npe (yoj tes yoj (soldering, reflow soldering, pre-coating), cov ntawv cog lus hauv Circuit Board thiab cov khoom kom hloov lub ntim, nrog lub nplaum nplaum rau cov cim.
4. Kev siv cov kua nplaum ua ib thaj chaw a. Dispensing hom: los ntawm cov khoom siv hauv lub rooj sib tham hauv Circuit Court Circuit board. B. Nqa hom: sizing los ntawm kev xuas ncauj los ntsig txog tooj liab.
5. Dijiao method SMA tuaj yeem siv syringe Dijiao, rab koob tshuaj xa los yog template luam ntawv uas siv rau PCB. Kev siv lub koob hloov txoj hauv kev yog tsawg dua 10% ntawm daim ntawv thov tag nrho, thiab nws yog siv rau hauv lub phaj ntawm cov gel hauv cov hlua ntawm koob. Thiab tom qab ntawd dai cov phaus ua ib tug lej rau lub phaj. Cov tshuab no yuav tsum muaj cov kua nplaum uas qis dua thiab muaj kev tiv thaiv zoo rau cov dej tsis haum vim tias nws yog nyob rau sab hauv tsev. Cov yam tseem ceeb uas tswj kev txhaj koob tshuaj tiv thaiv kabmob muaj xws li koob txhaj tshuaj thiab qauv, qhov kub ntawm qhov gel, qhov tob ntawm lub koob txhaj tshuaj, thiab qhov ntev ntawm lub caij nyoog ntawm lub dispenser (nrog rau kev ncua sij hawm ua ntej thiab thaum muaj kev sib cuag ntawm rab koob). Lub ntsuas kub yuav tsum nyob nruab nrab ntawm 25 thiab 30 ° C, uas tswj cov viscosity thiab tus lej thiab daim nplaum.
Template luam ntawv yog siv dav hauv siv tshuaj yaj yeeb, tseem muaj nrog rau kev faib tawm ntawm kua nplaum. Txawm hais tias tsawg dua 2% ntawm SMA tam sim no luam nrog templates, qhov txaus siab ntawm qhov kev qhia no tau nce thiab cov cuab yeej tshiab yog kov yeej qee cov kev txwv yav dhau los. Qhov tseeb template parameter yog tus yuam sij rau kev sib tw tau zoo. Piv txwv, tiv tauj luam ntawv (xoom phaj qhov siab) yuav tsum tau ncua sij hawm, cia kom muaj nplaum zoo dua. Tsis tas li ntawd, cov ntawv tsis sib tiv luam (kwv yees li 1 hli qhov sib txawv) rau cov qauv ntawm polymer yuav tsum tau ceev scraper ceev thiab siab. Lub thickness ntawm cov hlau qauv yog feem ntau 0.15 rau 2.00 hli thiab yuav tsum yog me ntsis loj dua lub (+0.05 hli) qhov nruab nrab ntawm qhov tivthaiv thiab PCB.
Thaum kawg qhov kub thiab txias yuav ua rau cov dej khov thiab cov qauv ntawm cov khoom siv niaj hnub no cia siab rau qhov ntsuas kub ntawm lub qhov ncauj los yog lub chamber kom cov kua sov kub dua li qhov chaw sov dua. Txawm li cas los xij, yog tias PCB kub los ntawm lub hauv ntej ntawm tus txheej txheem los txhim kho, ces cov yas lo lus contour yuav raug puas ntsoog.
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Lwm cov lus: IP65 LED Panels , UL LED Panels , LED teeb lub teeb , LED linear loj hlob teeb , lub teeb siab loj, linear commercal lighting
