Soldering hlau soldering ua haujlwm ntawm 8 qhov tseem ceeb
1, Kev kho deg ntawm soldered qhov chaw
Kev tuav cov hlau vuam hauv qhov vuam yog ntau yam ntawm cov khoom siv hluav taws xob thiab cov xov hlau, tshwj tsis yog tias siv cov khoom siv loj, "lub sij hawm pov hwm" nyob rau hauv cov khoom siv hluav taws xob, feem ntau ntsib hauv cov vuam feem ntau yuav tsum tau ua cov haujlwm ntxuav kom tshem tawm. qhov vuam nto ntawm xeb, roj, plua plav thiab lwm yam impurities cuam tshuam qhov zoo ntawm vuam. Feem ntau siv rau hauv phau ntawv ua haujlwm ntawm kev siv tshuab scraping thiab sib tsoo thiab cawv, acetone scrubbing thiab lwm txoj hauv kev yooj yim thiab yooj yim.
2, ua ntej soldering
Pre-soldering yog yuav tsum tau soldered tivthaiv ua los yog conductive soldering qhov chaw pre-wetted nrog solder, feem ntau kuj hu ua tin-plated, nyob rau hauv lub tin, tin-lined, thiab lwm yam.. tag nrho cov txheej txheem ntawm cov txheej txheem ntawm tin soldering - solder kom ntub dej ntawm qhov chaw ntawm lub vuam, tso siab rau qhov sib txawv ntawm cov hlau los tsim cov txheej txheem kev sib txuas tom qab lub npoo ntawm qhov vuam thiab ua rau cov vuam "plated" ntawm ib txheej ntawm cov hlau.
Pre-soldering tsis yog ib qho tseem ceeb ntawm kev ua haujlwm ntawm tin soldering, tab sis phau ntawv soldering hlau vuam, tshwj xeeb tshaj yog txij nkawm, debugging, kev tshawb fawb thiab kev loj hlob ua hauj lwm yuav hais tau yuav luag indispensable.
3, tsis txhob siv ntau dhau flux
Tus nqi ntawm cov flux yog qhov tseem ceeb, tab sis tsis txhob xav tias qhov zoo dua. Cov rosin ntau dhau tsis tsuas yog tshwm sim los ntawm kev sib txuas ntawm cov pob qij txha yuav tsum tau ntxuav cov haujlwm ua haujlwm, thiab txuas ntxiv lub sijhawm cua sov (rosin melting, volatilisation xav tau thiab tshem tawm cov cua sov), txo kev ua haujlwm; thiab thaum lub sij hawm cua sov tsis txaus lub sij hawm thiab yooj yim rau clip mus rau lub solder nyob rau hauv tsim ntawm "slag" tsis xws luag.
Rau cov soldering ntawm switching Cheebtsam, ntau dhau flux yuav ntws mus rau hauv kev sib cuag, uas ua rau tsis zoo kev sib cuag. Qhov tsim nyog ntawm cov flux yuav tsum yog xws li cov rosin tsuas yog ntub cov pob qij txha uas yuav tsim, thiab tsis txhob cia cov rosin ntws los ntawm cov ntawv luam tawm mus rau cov khoom siv saum npoo los yog lub qhov (socket) (xws li, IC sockets). Rau kev siv cov rosin tub ntxhais hlau, yeej tsis tas yuav tsum tau siv flux.
4, ua kom lub taub hau taub hau huv si
Vim hais tias lub taub hau ntawm lub taub hau vuam nyob rau hauv qhov kub thiab txias rau lub sijhawm ntev, thiab kev sib cuag nrog flux thiab lwm yam kub decomposition ntawm cov khoom, nws nto yog ib qho yooj yim rau oxidation thiab tsim ib txheej ntawm dub impurities, cov impurities yuav luag tsim ib lub tshav kub rwb thaiv tsev. txheej, kom lub taub hau hlau poob lub luag hauj lwm ntawm cua sov. Yog li ntawd, nws yog ib qhov tsim nyog los rub tawm cov impurities ntawm cov hlau soldering txhua lub sijhawm. Nrog ib daim ntaub ntub dej lossis daim txhuam cev ntub dej txhua lub sijhawm los so lub taub hau hlau, kuj yog ib txoj hauv kev.
5, cua sov cia siab rau tus choj solder
Kev ua haujlwm tsis yog kev sib sau ua ke, lub vuam vuam taw tes zoo yog ntau yam sib txawv, peb tsis tuaj yeem hloov pauv lub taub hau ntawm lub taub hau. Txhawm rau txhim kho qhov ua tau zoo ntawm cov hlau taub hau cua sov, yuav tsum tau tsim ib lub tshav kub hloov hluav taws xob. Lub npe hu ua solder choj yog tso siab rau cov hlau soldering kom tuav tau me me ntawm cov khoom siv los ua tus choj rau kev hloov hluav taws xob ntawm cov hlau taub hau thiab cov khoom siv thaum cua sov.
Obviously vim lub thermal conductivity ntawm cov kua hlau yog ntau dua li cov huab cua, yog li ntawd lub solder yog sai rhuab mus rau lub soldering kub. Nws yuav tsum tau muab sau tseg tias raws li ib tug choj ntawm solder tin kom khaws cov nyiaj ntawm tin tsis ntau dhau.
6, tus nqi ntawm solder kom tsim nyog
Cov khoom siv ntau dhau tsis tas yuav tsum haus cov tin kim dua, tab sis kuj nce lub sijhawm vuam, qhov sib txuas ntawm kev ua haujlwm ceev. Ntxiv rau, nyob rau hauv high-density Circuit Court, ntau tin tuaj yeem yooj yim ua rau luv luv Circuit Court. Tab sis me ntsis solder tsis tuaj yeem tsim ib daim ntawv cog lus, txo lub zog ntawm cov pob qij txha, tshwj xeeb tshaj yog thaum vuam hlau ntawm lub rooj tsavxwm, qhov tsis muaj solder feem ntau ua rau cov hlau tawm.
7, lub solder yuav tsum ruaj
Tsis txhob ua lub solder ua ntej lub solidification ntawm vuam qhov chaw kom txav los yog kev co, tshwj xeeb tshaj yog kev siv cov tweezers rau clamp lub vuam qhov chaw yuav tsum tau tos kom lub solidification ntawm solder thiab ces tshem tawm cov tweezers. Qhov no yog vim hais tias cov txheej txheem solder solidification yog cov txheej txheem crystallisation, raws li txoj kev xav ntawm crystallisation, thaum lub sij hawm crystallisation ntawm sab nraud rog (welding pieces txav) yuav hloov cov crystallisation tej yam kev mob, ua rau coarse muaju, uas ua rau lub thiaj li hu ua "kub vuam. ".
Qhov tshwm sim ntawm qhov tshwm sim yog qhov saum npoo ntawm luster ntawm dregs; solder pob qij txha nyob rau hauv cov qauv ntawm cov xoob, yooj yim kom muaj huab cua sib txawv thiab fissures, uas ua rau ib tug txo nyob rau hauv lub zog ntawm lub solder pob qij txha, tsis zoo hluav taws xob conductivity. Yog li ntawd, ua ntej lub solidification ntawm lub solder yuav tsum ua kom lub vuam nyob ruaj ruaj, lub sij hawm ua hauj lwm yuav siv tau nyob rau hauv ntau yam tsim nyog txoj kev los kho cov vuam, los yog siv cov txhim khu kev qha clamping ntsuas.
8, soldering hlau tshem tawm yuav tsum tau them sai sai rau
soldering hlau tshem tawm nyob rau hauv lub sij hawm, thiab tshem tawm ntawm lub kaum sab xis thiab kev taw qhia ntawm kev tsim ntawm ib tug tej yam kev sib raug zoo rau lub soldering point. Tshem tawm ntawm cov hlau soldering thaum maj mam tig me ntsis, tuaj yeem khaws cov pob qij txha uas tsim nyog, uas yuav tsum muaj kev paub txog kev ua haujlwm tiag tiag.
