Thaum lub PCB nkag rau hauv qhov chaw tiv thaiv khoom kub dhau los ntawm 140 ℃ ～ 160 ℃, cov kuab tshuaj thiab cov pa hauv qhov cub yaj yaj yaj. Tib lub sijhawm, cov flux hauv ham muab tshuaj txhuam cov ntaub qhwv, tivthaiv ham xaus thiab pins, thiab cov muab tshuaj txhuam cov muag muag thiab tsaus muag. Nws npog cov ntaub qhwv, thiab cais tawm cov ntaub thiab cov khoom siv pins los ntawm cov pa; thiab cov khoom ua rau saum npoo av tau tag nrho preheated, thiab tom qab ntawd thaum lawv nkag mus rau hauv cheeb tsam soldering, qhov kub tau nce nrawm ntawm tus qauv cua sov kom tsawg 2-3 ° C ib ob qhov muag muab tshuaj txhuam tau mus txog lub xeev molten, thiab cov kua ua kua wets, diffuses. , diffuses, ntws, thiab reflows ntawm cov PCB cov ntxig, tivthaiv cam xaus thiab pins los tsim cov hlau txuas ntawm qhov sib txuas soldering ua rau cov pob qij txha txuas; tom qab ntawd cov PCB nkag rau hauv qhov chaw txias txias rau soldering Point khov.
Taw qhia ntawm reflow soldering txuj ci: Sib txawv reflow soldering muaj qhov zoo sib txawv, thiab cov txheej txheem ntws sib txawv yog qhov tseeb sib txawv.
Infrared reflow soldering: siab hluav taws xob xaim hluav taws xob ua kom sov ua kom zoo dua, qhov kub tsis tseem ceeb, yooj yim los tswj qhov kub nkhaus, yooj yim los tswj lub siab thiab qis kub ntawm PCB thaum ob tog sib xyaw soldering. Cov duab ntxoov ntxoo ua haujlwm, ntsuas kub tsis sib xws, yooj yim ua rau hlawv hauv zos ntawm Cheebtsam lossis PCB
Cov huab cua kub reflow soldering: convection conduction uniform kub, soldering zoo. Kev ntsuas kub ntawm qhov ntsuas kub tsis yooj yim los tswj
Yuam kub-cua reflow soldering: Infrared thiab kub-cua cua kub sib xyaw. Ua ke nrog qhov zoo ntawm infrared thiab kub cua kub cua, zoo tshaj plaws soldering teebmeem tuaj yeem tau txais thaum cov khoom lag luam muag. Yuam hluav taws kub cua kub roj (solder) tuaj yeem faib ua ob hom raws li nws muaj peev xwm ntau lawm:
1. Cov khoom kub thaj chaw: cov khoom lag luam loj yog tsim nyog rau huab hwm coj ntau lawm. Cov laug cam PCB tau muab tso rau ntawm txoj siv conveyor. Lawv yuav tsum dhau los ntawm ntau lub chaw ntsuas kub hauv qhov chaw ua haujlwm. Yog hais tias cheeb tsam kub dhau lawm, yuav muaj qhov kub dhia dhia qhov tshwm sim, uas tsis haum rau qhov siab ua ke ntawm pawg thawj coj saib xyuas kev sib tsoo. Nws tseem zoo siab thiab noj ntau zog.
2. Lub tshav kub qhov chaw me me cov khoom siv: cov khoom me me thiab nruab nrab cov khoom lag luam tau tsim kho sai sai nyob rau hauv cov chaw ruaj, qhov kub hloov nrog lub sijhawm raws li cov kev teeb tsa, thiab txoj haujlwm yog yooj yim. Lub txim tsis ua haujlwm saum cov npoo (tshwj xeeb loj) tuaj yeem kho tau. Tsis haum rau huab hwm coj ntau lawm.
Vim tias cov txheej txheem reflow soldering muaj cov yam ntxwv ntawm" reflow" thiab" kev ntsuas tus kheej-qhov teeb meem" ;, cov txheej txheem rov qab muag cov txheej txheem muaj qhov xoob tsawg rau kev tso qhov tseeb, thiab nws yooj yim kom ua tiav qib siab ntawm automation thiab siab ceev soldering. Nyob rau tib lub sijhawm, vim muaj cov yam ntxwv ntawm qhov cuam tshuam thiab qhov kev ua haujlwm ntawm tus kheej, cov txheej txheem reflow soldering muaj ntau qhov kev txwv ntau dua rau cov qauv tsim, cov txheej txheem tivthaiv, cov khoom sib xyaw thiab cov ntawv luam tawm zoo, cov khoom zoo thiab cov txheej txheem parameter chaw.
Kev ntxuav tu yog txheej txheem ntawm kev tshem tawm cov pa phem thiab tsis huv rau saum npoo ntawm qhov khoom kom raug ntxuav tawm los ntawm kev siv lub cev thiab tshuaj lom neeg. Txawm hais tias nws yog kuab tshuaj tu lossis dej tu, nws yuav tsum mus dhau ntawm cov nplaim dej, kev sib cais, emulsification, saponification, thiab lwm yam, thiab siv cov txheej txheem sib txawv ntawm cov neeg kho tshuab kom tev tawm cov av los ntawm cov txheej txheem rau saum npoo, thiab tom qab ntawd yaug lossis yaug nws. Tom qab ziab, ziab lossis ntuj qhuav.
Reflow soldering yog cov txheej txheem tseem ceeb hauv SMT ntau lawm, thiab qhov ntsuas qhov kub thiab txias qhov chaw tsim nyog yog tus yuam sij rau kev ntseeg zoo ntawm reflow soldering. Kab nkhaus tsis raug cai yuav ua rau cov teeb meem soldering xws li tsis ua tiav soldering, tsis muaj tseeb soldering, tivthaiv ua kom tsis raug, thiab cov khoom muag ntau dhau ntawm PCB, uas yuav cuam tshuam cov khoom zoo.
SMT yog kev tshaj lij kev tsim kho tshuab ua haujlwm, uas suav nrog cov substrates, tsim qauv, khoom siv, khoom siv, txheej txheem sib dhos, cov khoom siv ntau lawm thiab kev tswj hwm. Cov cuab yeej SMT thiab cov txheej txheem SMT xav tau hluav taws xob ruaj khov ntawm qhov chaw ua haujlwm, tiv thaiv hluav taws xob cuam tshuam, tiv thaiv hluav taws xob zoo li qub, muaj lub teeb pom kev zoo thiab tso pa tawm, thiab muaj qhov tshwj xeeb rau qhov ntsuas kub, av noo, thiab huab cua huv ntawm qhov chaw ua haujlwm. Cov Neeg Khiav Haujlwm yuav tsum tau txais kev cob qhia ua haujlwm