Qee qhov taw qhia siv lub vuam hlau thiab lwm yam khoom siv vuam
Cov txheej txheem ntawm phau ntawv soldering:
1. Tshawb xyuas ua ntej ua haujlwm
(1) Ntxig cov hluav taws xob soldering hlau ntsaws rau hauv lub qhov (socket) 3-5 feeb ua ntej welding, thiab xyuas seb cov hlau puas kub. Yog hais tias nws tsis kub, ua ntej xyuas seb lub qhov (socket) puas yog ntsaws rau hauv. Qhia, tsis txhob disassemble lub soldering hlau ntawm lub siab nyiam, cia nyob ib leeg ncaj qha kov lub taub hau ntawm koj txhais tes.
(2) Cov lus qhia hlau soldering uas tau oxidized thiab tsis sib xws lossis muaj hooks yuav tsum tau hloov kho:
1), tuaj yeem ua kom muaj txiaj ntsig zoo thaum tshav kub kub;
2) Los xyuas kom meej qhov zoo ntawm cov khoom welded. Yog hais tias ib tug tshiab soldering hlau taub yog hloov, cov xim tu yuav tsum tau muab tshem tawm tom qab cua sov, thiab tin nkawm yuav tsum tau ntxiv tam sim ntawd. Kev ntxuav ntawm cov hlau soldering yuav tsum tau ua ua ntej kev ua haujlwm. Yog tias cov hlau tsis siv ntau tshaj 5 feeb, lub hwj chim yuav tsum muab tua. Daim txhuam cev yuav tsum tau ntxuav. Cov sponges qias neeg muaj hlau hais, los yog daim txhuam cev uas muaj leej faj yuav ua rau lub ntsis ntawm cov hlau soldering.
3) Xyuas seb lub tin-absorbing daim txhuam cev puas muaj dej thiab huv. Yog tias tsis muaj dej, thov ntxiv cov dej uas tsim nyog (tus nqi tsim nyog txhais tau hais tias cov dej yuav nkag mus thaum daim txhuam cev raug nias mus rau ib nrab ntawm cov tuab tuab. Cov haujlwm tshwj xeeb yog: cov av noo yuav tsum Tom qab daim txhuam cev ntub tag, tuav nws. nyob rau hauv xib-teg ntawm koj txhais tes, thiab kaw koj tsib ntiv tes ib txwm), daim txhuam cev yuav tsum tau ntxuav, raws li cov sponges qias neeg muaj hlau hais, los yog sponges uas muaj leej faj yuav ua rau lub taub hau ntawm soldering hlau.
4) Txawm hais tias tib neeg lub cev thiab cov hlau soldering muaj kev ntseeg siab, thiab seb tib neeg lub cev hnav lub nplhaib electrostatic.
2. Vuam cov kauj ruam
Cov kauj ruam ua haujlwm tshwj xeeb ntawm cov hlau vuam tuaj yeem muab faib ua tsib kauj ruam, uas yog hu ua tsib kauj ruam engineering. Yuav kom tau txais kev vuam zoo, nws yuav tsum tau ua nruj me ntsis raws li qhia hauv daim duab 5.
Soldering raws li cov kauj ruam saum toj no yog ib qho ntawm cov yuam sij kom tau txais cov pob qij txha zoo. Nyob rau hauv qhov tseeb ntau lawm, feem ntau yuav ua txhaum ntawm lub lag luam cov kauj ruam yog hais tias lub soldering hlau taub tsis yog nyob rau hauv kev sib cuag nrog welded ib feem ua ntej, tab sis nrog lub solder hlau ua ntej, thiab molten solder tee rau ntawm unpreheated ib feem yuav tsum tau welded. Nyob rau hauv txoj kev no, nws yog ib qho yooj yim uas yuav ua rau welding cuav ntawm cov pob qij txha, yog li ntawd lub ntsis ntawm cov hlau soldering yuav tsum nyob rau hauv kev sib cuag nrog lub workpiece yuav tsum tau welded. Preheating lub workpiece yuav tsum tau welded yog ib qho tseem ceeb txhais tau tias los tiv thaiv tsis tseeb vuam.
3. Vuam qhov tseem ceeb
(1) Txoj kev sib cuag ntawm lub taub hau hlau thiab ob qhov chaw yuav tsum tau welded
Txoj hauj lwm sib cuag: Lub taub hau hlau yuav tsum nyob rau hauv kev sib cuag nrog ob qhov chaw welded (xws li cov ko taw thiab cov ntaub qhwv) kom txuas rau tib lub sijhawm. Cov hlau soldering feem ntau yog inclined ntawm 45 degrees, thiab yuav tsum tsis txhob sib cuag tsuas yog ib qho ntawm cov welded qhov chaw. Thaum lub tshav kub muaj peev xwm ntawm ob qhov chaw welded txawv heev, lub inclination lub kaum sab xis ntawm cov hlau soldering yuav tsum tau kho kom haum. Qhov me me ntawm qhov inclination lub kaum sab xis ntawm cov hlau soldering thiab vuam nto, qhov loj ntawm qhov chaw sib cuag ntawm qhov chaw welded nrog lub peev xwm loj dua thiab cov hlau soldering yuav yog, thiab cov hluav taws xob muaj peev xwm yuav raug txhim kho. Piv txwv li, lub inclination lub kaum sab xis ntawm LCD rub vuam yog hais txog 30 degrees, thiab lub inclination lub kaum sab xis ntawm vuam microphones, motors, hais lus, thiab lwm yam yuav yog hais txog 40 degrees. Ob qhov chaw yuav tsum tau welded tuaj yeem ncav cuag qhov kub thiab txias tib lub sijhawm, uas yog suav tias yog lub xeev zoo tshaj plaws ntawm cov cua sov.
Kev sib cuag siab: Thaum lub taub hau hlau yog nyob rau hauv kev sib cuag nrog lub workpiece yuav tsum tau welded, me ntsis siab yuav tsum tau thov. Lub zog ntawm tshav kub conduction yog proportional rau lub siab thov, tab sis lub hauv paus ntsiab lus yog kom tsis txhob ua kev puas tsuaj rau saum npoo ntawm welded daim.
(2) Muab txoj kev vuam hlau
Kev xa khoom ntawm vuam hlau yuav tsum tau ua tiav peb txoj hauv kev, uas yog lub sijhawm muab khoom, qhov chaw thiab qhov ntau.
Lub sij hawm muab khoom: Raws li txoj cai, cov hlau xaim xaim tam sim ntawd thaum qhov kub ntawm qhov vuam mus txog qhov kub ntawm cov khoom siv.
Qhov chaw muab khoom: Nws yuav tsum nyob nruab nrab ntawm cov hlau soldering thiab cov welded ib feem thiab ze rau ntawm lub ncoo li sai tau.
Kev muab khoom ntau: Nws nyob ntawm qhov loj ntawm qhov vuam thiab lub ncoo. Tom qab lub solder npog lub ncoo, lub solder tuaj yeem siab tshaj 1/3 ntawm txoj kab uas hla ntawm lub ncoo.
(3) Lub sijhawm vuam thiab qhov kub thiab txias
A. Qhov kub thiab txias yog txiav txim los ntawm kev siv tiag tiag. Nws yog qhov tsim nyog rau solder point rau 4 vib nas this, thiab qhov siab tshaj plaws yog tsis pub tshaj 8 vib nas this. Feem ntau saib qhov ntxeev ntawm cov hlau soldering. Thaum nws hloov ntshav, qhov kub thiab txias yog siab dhau.
B. Rau cov khoom siv hluav taws xob hauv kab dav dav, teeb tsa qhov ntsuas kub ntawm lub taub hau rau (350 ~ 370 degrees); rau saum npoo mount cov ntaub ntawv (SMC), teem lub sij hawm kub ntawm lub soldering hlau taub rau (330 ~ 350 degrees)
C. Rau cov ntaub ntawv tshwj xeeb, qhov kub ntawm cov hlau soldering yuav tsum tau teem tshwj xeeb. FPC, LCD connectors, thiab lwm yam yuav tsum siv nyiaj-muaj tin hlau, thiab qhov kub thiab txias yog feem ntau ntawm 290 degrees thiab 310 degrees.
D. Thaum soldering loj tiv thaiv taw, qhov kub yuav tsum tsis txhob siab tshaj 380 degrees, tab sis koj tuaj yeem ua kom lub zog ntawm cov hlau soldering.
(4) Kev ceev faj rau vuam
A. Ua ntej vuam, saib seb txhua qhov sib koom ua ke (tooj liab ntawm daim tawv nqaij) yog du thiab oxidized.
B. Thaum vuam cov khoom, nco ntsoov saib lub vuam taw tes kom tsis txhob luv luv Circuit Court tshwm sim los ntawm kev vuam tsis zoo ntawm txoj kab.
4. Tshawb xyuas tom qab ua haujlwm:
(1) Tom qab siv cov hlau soldering, so tawm cov tin seem ntawm qhov kawg ntawm cov hlau soldering nrog ib daim txhuam cev.
(2) Tom qab tawm haujlwm txhua hnub, cov hlaws tin, tin slag, plua plav, thiab lwm yam yuav tsum tau muab ntxuav kom huv, thiab tom qab ntawd cov hlau soldering tau muab tso rau ntawm cov hlau soldering.
(3) Muab cov khoom siv hluav taws xob uas huv si rau ntawm lub ces kaum sab xis ntawm qhov chaw ua haujlwm.
