Txoj kev soldering rau SMD Cheebtsam hauv cov txheej txheem soldering
Cov txheej txheem soldering nyob rau hauv SMD Cheebtsam ntawm txoj kev vuam
1 ua ntej welding ntawm cov ntaub qhwv coated nrog flux, nrog ib tug soldering hlau nrog ib zaug, kom tsis txhob muaj cov tinning tsis zoo ntawm cov ntaub qhwv los yog oxidized, ua rau cov vuam tsis zoo, cov nti feem ntau tsis tas yuav cuam tshuam nrog.
2 nrog tweezers ua tib zoo muab QFP nti rau ntawm lub rooj tsavxwm PCB, xyuam xim tsis txhob ua kom cov pins puas. Ua kom nws sib haum nrog lub ncoo, kom ntseeg tau tias cov nti tau muab tso rau hauv txoj cai. Qhov kub ntawm cov hlau soldering mus rau ntau tshaj 300 degrees Celsius, lub taub hau ntawm lub taub hau soldering Dipped nyob rau hauv ib tug me me npaum li cas ntawm solder, nrog ib tug lub cuab tam los nias rau ntawm txoj hauj lwm ntawm lub nti tau ua raws li nyob rau hauv ob kab pheeb ces kaum txoj hauj lwm. pins nrog ib tug me me npaum li cas ntawm solder, tseem nias rau ntawm lub nti, weld ob kab pheeb ces kaum txoj hauj lwm ntawm tus pins, yog li ntawd lub nti yog tsau thiab txav tsis tau. Tom qab vuam cov kab pheeb ces kaum kom rov kuaj xyuas txoj haujlwm ntawm cov nti yog ua raws. Yog tias tsim nyog, kho lossis tshem tawm thiab rov kho txoj haujlwm ntawm PCB.
3 pib soldering tag nrho cov pins, yuav tsum tau muab ntxiv rau lub ntsis ntawm lub soldering hlau, tag nrho cov pins yuav coated nrog solder kom cov pins ntub. Siv lub taub hau ntawm cov hlau nplaum los kov qhov kawg ntawm txhua tus pin ntawm cov nti kom txog thaum koj pom cov hlau nplaum ntws mus rau hauv tus pin. Thaum soldering kom lub ntsis ntawm cov hlau soldering thiab cov pins soldered nyob rau hauv parallel, los tiv thaiv qhov tshwm sim ntawm overlap vim lub solder ntau dhau.
4 Tom qab soldering tag nrho cov pins, ntub tag nrho cov pins nrog flux los ntxuav lub solder. Wick tawm tshaj solder qhov xav tau los tshem tawm cov luv luv thiab laps. Thaum kawg, siv cov tweezers los xyuas qhov tsis tseeb soldering. Thaum qhov kev tshuaj xyuas tiav lawm, tshem tawm cov dej ntws tawm ntawm lub rooj tsavxwm los ntawm kev dipping ib qho txhuam txhuam hauv cawv thiab so kom zoo nyob rau hauv cov kev taw qhia ntawm cov pins kom txog thaum cov flux ploj.
5 nti resistive Cheebtsam yog ib qho yooj yim rau weld ib co, koj tuaj yeem ua ntej taw tes rau ntawm qhov taw tes ntawm lub tin, thiab tom qab ntawd muab tso rau ntawm ib qho kawg ntawm cov khoom, siv cov tweezers los tuav cov khoom, weld ib kawg, thiab saib seb nws puas yog. muab tso rau sab xis; yog tias nws tau muab tso rau ntawm txoj cai, ces welded rau ntawm qhov kawg. Yog tias tus pin nyias nyias hauv kauj ruam 2, koj tuaj yeem ua ntej ntxiv cov tin rau hauv tus pin nti, thiab tom qab ntawd siv cov tweezers los clamp cov tub ntxhais, maj mam khob ntawm ntug ntawm lub rooj, pier ntxiv rau cov khoom siv ntau dhau, cov kauj ruam thib peb. soldering hlau tsis tas yuav tin, soldering hlau ncaj welding. Thaum peb ua tiav lub rooj tsav xwm hauv Circuit Court tom qab kev ua haujlwm vuam, peb yuav tsum tau xyuas qhov zoo ntawm cov pob qij txha ntawm lub rooj tsavxwm, kho, refill welding. Ua tau raws li cov hauv qab no rau cov pob qij txha
Peb ntseeg hais tias cov pob qij txha yog tsim nyog.
(1) Cov pob qij txha txuas rau sab hauv arc (conical).
(2) Tag nrho cov sib koom ua ke yuav tsum ua kom tiav, du, tsis muaj pinholes, tsis muaj rosin stains.
(3) Yog tias muaj cov hlau lead, pins, lawv qhov ntev ntawm tus pin yuav tsum nyob nruab nrab ntawm 1-1.2MM.
(4) Qhov chaw ko taw profile pom tin dispersion yog qhov zoo.
(5) Lub solder yuav ncig tag nrho qhov chaw ntawm lub tin thiab ko taw ntawm qhov.
Tsis txhob ua raws li cov qauv saum toj no ntawm cov pob qij txha uas peb ntseeg tias yog cov pob qij txha tsis tsim nyog, qhov yuav tsum tau kho dua tshiab.
(1) cuav soldering: zoo li yuav welded nyob rau hauv qhov tseeb tsis welded, feem ntau yog vim qias neeg pads thiab pins, flux tsis txaus los yog tsis txaus lub sij hawm cua sov.
(2) luv-circuit: ko taw qhov chaw nyob rau hauv ko taw thiab ko taw los ntawm ntau tshaj ntawm solder txuas nrog luv luv-circuit, nrog rau cov seem slag kom cov ko taw thiab ko taw luv luv.
(3) off-set: vim lub ntaus ntawv nyob rau hauv lub pre-solder positioning yog tsis tso cai, los yog nyob rau hauv lub welding tshwm sim los ntawm kev ua yuam kev ua rau tus pin tsis nyob rau hauv cov ntaub ntawv teev cheeb tsam.
(4) tsawg tin: tsawg tin txhais tau hais tias lub ntsiab lus tin yog nyias dhau, tsis tuaj yeem npog tag nrho ntawm daim tawv nqaij ntawm cov khoom, cuam tshuam rau kev sib txuas ruaj khov.
(5) ntau cov tin: qhov chaw ko taw tau them tag nrho los ntawm cov tin, uas yog, tsim ntawm sab nrauv arc, kom cov duab ntawm cov khoom thiab cov ntaub qhwv tsis tuaj yeem pom, tsis tuaj yeem txiav txim siab seb cov khoom thiab cov ntaub qhwv ntawm cov tin zoo li cas.
(6) tin pob, tin slag: PCB board nto txuas nrog ntau lub pob, tin slag, yuav ua rau cov pins luv luv.
