11. Cov khoom tsis haum rau kev ntxhov siab yuav tsum tsis txhob muab tso rau ntawm cov ces kaum, cov npoo, los yog ze ntawm cov khoom sib txuas, qhov sib txuas, qhov grooves, cutouts, gashes thiab fab ntawm cov ntawv luam tawm Circuit Board.Cov chaw no yog thaj chaw muaj kev ntxhov siab ntawm cov ntawv luam tawm hauv Circuit Court boards, uas tuaj yeem yooj yim ua rau tawg lossis tawg hauv cov pob qij txha thiab cov khoom siv.
12. Cov txheej txheem ntawm cov khoom yuav tsum ua tau raws li cov txheej txheem thiab qhov sib txawv ntawm reflow soldering thiab yoj soldering.Txo cov duab ntxoov ntxoo thaum lub sij hawm yoj soldering.
13. Printed circuit board positioning qhov thiab cov kev txhawb nqa ruaj khov yuav tsum tau muab tso rau hauv txoj haujlwm.
14. Nyob rau hauv kev tsim ntawm cheeb tsam loj luam tawm Circuit Court board ntawm ntau tshaj 500cm2Txhawm rau tiv thaiv cov ntawv luam tawm ntawm lub rooj tsavxwm los ntawm kev khoov thaum hla lub qhov cub tawg, qhov sib txawv ntawm 5 ~ 10mm dav yuav tsum tau muab tso rau hauv nruab nrab ntawm lub rooj tsavxwm luam tawm, thiab cov khoom (tuaj yeem taug kev) yuav tsum tsis txhob muab tso rau, yog li txhawm rau tiv thaiv cov ntawv luam tawm los ntawm kev khoov thaum hla lub qhov cub tawg.
15. Cov txheej txheem layout ntawm reflow soldering txheej txheem.
(1) Cov kev taw qhia layout ntawm cov khoom yuav tsum xav txog cov kev taw qhia ntawm lub rooj tsavxwm luam tawm rau hauv lub qhov cub reflow.
(2) txhawm rau ua kom ob qhov kawg ntawm cov khoom siv rau ntawm ob sab ntawm lub vuam kawg thiab SMD cov khoom ntawm ob sab ntawm tus pin synchronization yog rhuab, txo cov khoom ntawm ob sab ntawm vuam kawg tsis tsim cov erection, hloov , synchronous cua sov los ntawm vuam tsis xws li solder vuam kawg, yuav tsum tau ob kawg ntawm nti Cheebtsam ntawm luam Circuit Court board ntev axis yuav tsum tau perpendicular mus rau cov kev taw qhia ntawm txoj siv conveyor ntawm lub reflow qhov cub.
(3) Lub axis ntev ntawm SMD cov khoom yuav tsum ua tib zoo sib xws rau cov kev taw qhia hloov ntawm lub reflow rauv.Qhov ntev axis ntawm CHIP Cheebtsam thiab cov axis ntev ntawm SMD cov khoom ntawm ob qhov kawg yuav tsum yog perpendicular rau ib leeg.
(4) Ib qho kev tsim qauv zoo ntawm cov khoom yuav tsum tsis tsuas yog xav txog qhov sib xws ntawm lub peev xwm kub, tab sis kuj xav txog cov kev taw qhia thiab cov kab ke ntawm cov khoom.
(5) Rau lub rooj tsavxwm loj loj, txhawm rau ua kom qhov kub thiab txias ntawm ob sab ntawm lub rooj tsavxwm luam tawm kom zoo ib yam li qhov ua tau, sab ntev ntawm lub rooj tsavxwm luam tawm yuav tsum sib npaug rau cov kev taw qhia ntawm txoj siv conveyor ntawm lub reflow. rauv.Yog li ntawd, thaum lub sij hawm luam ntawv Circuit Court board loj dua 200mm, qhov yuav tsum tau muaj raws li nram no:
(A) ntev axis ntawm CHIP tivthaiv ntawm ob qho kawg yog perpendicular mus rau sab ntev ntawm lub rooj tsavxwm luam tawm.
(B) Lub axis ntev ntawm SMD tivthaiv yog sib npaug rau sab ntev ntawm lub rooj tsavxwm luam tawm.
(C) Rau cov ntawv luam tawm Circuit Board sib sau ua ke ntawm ob sab, cov khoom ntawm ob sab muaj tib txoj kev taw qhia.
(D) Npaj cov kev taw qhia ntawm cov khoom ntawm lub rooj tsav xwm luam tawm.Cov khoom zoo sib xws yuav tsum tau teem rau tib qhov kev taw qhia kom deb li deb tau, thiab cov yam ntxwv kev taw qhia yuav tsum zoo ib yam, thiaj li ua kom yooj yim rau kev teeb tsa, vuam thiab tshawb xyuas cov khoom.Yog hais tias electrolytic capacitor zoo ncej, diode zoo ncej, transistor ib tus pin kawg, thawj tus pin ntawm kev sib koom ua ke hauv Circuit Court kev coj ua zoo ib yam li deb tau.
16. Txhawm rau tiv thaiv luv luv Circuit Court ntawm cov khaubncaws sab nraud povtseg tshwm sim los ntawm kev kov cov ntawv luam tawm thaum lub sijhawm ua haujlwm PCB, cov qauv txheej txheem ntawm txheej txheej sab hauv thiab txheej txheej yuav tsum yog ntau tshaj 1.25mm ntawm PCB ntug.Thaum cov xaim hauv av tau muab tso rau ntawm ntug ntawm lub PCB sab nraud, cov xaim hauv av tuaj yeem tuav txoj haujlwm ntug.Rau PCB nto txoj haujlwm uas tau ua haujlwm vim yog cov qauv tsim, cov khoom siv thiab cov ntawv luam tawm yuav tsum tsis txhob muab tso rau hauv qhov chaw nyob hauv qab ntawm SMD / SMC yam tsis muaj qhov, yog li kom tsis txhob muaj kev sib txawv ntawm solder tom qab tau rhuab thiab remelted hauv nthwv dej. soldering tom qab reflow soldering.
17. Kev sib txuas ntawm cov khoom sib txuas: Qhov tsawg kawg nkaus qhov sib txawv ntawm cov khoom yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm SMT sib dhos rau kev tsim khoom, kuaj xyuas, thiab kev tswj xyuas.
Post lub sij hawm: Dec-21-2020