8 kev khiav hauj lwm tseem ceeb rau hluav taws xob soldering hlau soldering
1. Weldments 's nto kho
Ntau yam khoom siv hluav taws xob thiab cov cables yog welded ua ke manually nrog cov hlau soldering. Cov weldments uas feem ntau ntsib yuav tsum muaj lawv qhov chaw huv si tsis tu ncua, tshwj tsis yog cov khoom siv hluav taws xob nyob rau hauv "lub sij hawm pov hwm" yog ua hauj lwm nyob rau hauv cov chaw tsim khoom loj. Ua hauj lwm los ntxuav lub vuam nto ntawm xeb, roj, plua plav, thiab lwm yam kuab paug uas tuaj yeem cuam tshuam qhov zoo ntawm qhov vuam. Hauv kev ua haujlwm ntawm phau ntawv, kev siv tshuab scraping, cawv thiab acetone scrubbing, thiab lwm yam kev siv ncaj qha tau nquag siv.
2. Pre-welding
Pre-soldering, tseem hu ua tinning, tinning, tinning, thiab lwm yam, yog cov txheej txheem ntawm pre-wetting cov hlau lead ntawm cov khoom uas yuav tsum tau soldered los yog cov conductive soldering seem nrog solder. Pre-soldering yog ib lub npe tsim nyog vim tias nws cov txheej txheem thiab cov txheej txheem zoo ib yam rau cov tsoos soldering: tom qab cov hlau tau diffused los ua ib txheej kev sib txuas, weldment qhov saum npoo yog "plated" nrog ib txheej ntawm solder.
Pre-soldering tsis yog ib qho tseem ceeb hauv cov txheej txheem soldering, txawm hais tias nws yog ze li ntawm tes soldering hlau vuam, tshwj xeeb tshaj yog rau kev saib xyuas, kev daws teeb meem, thiab R & D.
3. Tsis txhob siv dej ntau dhau
Nws yog ib qho tseem ceeb kom muaj qhov tseeb ntawm flux, tab sis tsis txhob xav tias ntau dua ib txwm zoo dua. Ntxiv rau qhov ua kom cov khoom ua haujlwm yuav tsum tau ua kom huv si ib ncig ntawm cov pob qij txha tom qab soldering, cov rosin ntau dhau kuj txo cov haujlwm ua haujlwm los ntawm kev ua kom lub sijhawm cua sov (rosin melts, volatilizes, thiab steals cua sov), thiab thaum lub sij hawm cua sov tsis txaus, nws yog ib qho yooj yim. los sib tov nws nrog cov solder los tsim qhov "Slag inclusion" defect.
Nws yog qhov yooj yim rau cov dej ntws ntau dhau mus rau cov neeg sib cuag thaum lub sij hawm vuam ntawm kev hloov cov ntsiab lus, uas ua rau kev sib cuag tsis zoo. Qhov kom muaj nuj nqis ntawm soldering flux yuav tsum tau siv kom cov ntxhiab tsw rosin tsuas tuaj yeem moisten cov kev sib txuas uas yuav los tom ntej thiab tsis xau los ntawm cov ntawv luam tawm ntawm lub rooj tsavxwm mus rau qhov chaw tivthaiv lossis lub qhov (socket) (xws li lub qhov (socket) IC). Nws yog ib qho tseem ceeb tsis tas yuav rov thov cov flux rau cov xov hlau uas siv rosin cores.
4. Khaws lub taub hau ntawm lub taub hau.
Lub taub hau ntawm cov hlau nplaum yog yooj yim oxidized los tsim ib txheej ntawm cov impurities dub, uas yuav luag ua raws li cov txheej txheem cua sov thiab ua rau cov hlau nplaum plam nws cov cua sov vim tias nws nyob rau hauv qhov kub thiab txias rau lub sijhawm ntev. soldering thiab raug tshav kub-decomposed cov ntaub ntawv zoo li flux. Yog li, koj tuaj yeem txhuam cov kab mob ntawm cov hlau thav duab. Lwm cov txheej txheem yog los so cov hlau nplaum lub ntsis nrog ib daim ntaub ntub dej los yog daim txhuam cev.
5. Tus choj txuas hluav taws xob cuam tshuam rau cua sov
Nws tsis tuaj yeem ua rau peb niaj hnub hloov qhov ntxeev ntawm cov hlau soldering nyob rau hauv kev ua haujlwm tsis yog kev sib dhos vim muaj ntau yam ntawm cov hlau sib txuas 'cov duab. Nws yog tsim nyog los tsim ib tug solder choj rau tshav kub hloov nyob rau hauv thiaj li yuav ua kom cov hauj lwm zoo ntawm soldering hlau taub cua sov. Lub sij hawm "solder choj" yog hais txog kev tuav ntawm ib qho me me ntawm cov khoom siv ntawm cov hlau soldering raws li cov kav dej rau cov cua sov hloov ntawm lub taub thiab cov vuam thaum lub sij hawm cua sov.
Obviously, lub vuam yog sai rhuab mus rau vuam kub vim molten hlau conducts tshav kub zoo dua huab cua. Ceev faj tsis txhob siv tus choj solder uas khaws cov tin ntau dhau.
6. Lub solder yuav tsum tau siv raws li tus nqi tsim nyog.
Cov khoom siv ntau dhau tsis tsuas yog khib nyiab kim dua tab sis kuj tseem ua rau cov txheej txheem soldering thiab ua haujlwm qeeb. Dab tsi yog qhov phem tshaj yog tias cov tin ntau dhau tuaj yeem ua rau tsis muaj kev ceeb toom luv luv nyob rau hauv high-density circuits. Txawm li cas los xij, tsis txaus solder tsis tuaj yeem tsim kom muaj kev sib raug zoo thiab ua rau cov khoom sib txuas tsis muaj zog. Ib qho tsis muaj solder feem ntau ua rau cov xov hlau xoob, tshwj xeeb tshaj yog thaum txuas rau lub rooj tsavxwm.
7. Cov khoom siv vuam khov yuav tsum tau siv.
Ua ntej lub solder hardens, tsis txhob txav los yog vibrating lub vuam. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog thaum clamping lub vuam nrog tweezers; nco ntsoov tias koj tos kom lub solder solidify ua ntej tso cov tweezers. Qhov no yog vim li cas cov txheej txheem ntawm solder solidification koom nrog crystallization. Lub crystallization txoj kev xav hais tias thaum ib tug weldment yog tsiv thaum lub sij hawm crystallization txheej txheem, cov crystallization tej yam kev mob yog hloov, uas ua rau tsim ntawm ntxhib crystals thiab thiaj li hu ua "kub welding."
Qhov saum npoo muaj qhov tsis zoo, zoo li taum-dregs zoo li, thiab cov qauv sab hauv ntawm qhov sib koom ua ke yog xoob, ua rau nws yooj yim los tsim cov huab cua sib txawv thiab cov kab nrib pleb, uas txo qhov sib koom ua ke lub zog thiab ua rau nws muaj hluav taws xob tsis zoo. Yog li ntawd, lub vuam yuav tsum tau tuav kom txog thaum lub solder muaj sij hawm teem. Hauv kev siv tiag tiag, qhov vuam tuaj yeem kho tau siv ntau yam kev tsim nyog lossis kev ruaj ntseg clamping mechanisms.
