Yuav ua li cas cov teeb meem yuav tsum tau them sai sai rau thaum siv soldering hlau welding nyob rau hauv cov txheej txheem txij nkawm
1. Kev xaiv hluav taws xob soldering hlau
Muaj ntau ntau hom thiab specifications ntawm hluav taws xob soldering hlau, thiab qhov luaj li cas thiab yuav tsum tau ntawm cov khoom siv hluav taws xob yuav tsum tau soldered yog txawv. Yog li ntawd, qhov tsim nyog xaiv ntawm lub hwj chim thiab hom hluav taws xob soldering hlau muaj kev sib raug zoo rau kev txhim kho vuam zoo thiab kev ua haujlwm zoo. Thaum lub sij hawm soldering txheej txheem, cua sov yog muab los ntawm ib tug soldering hlau. Tsuas yog thaum lub solder joint absorbs txaus tshav kub kom qhov kub ntawm lub soldering cheeb tsam melts lub solder thiab cov flux yog zoo volatilized, yuav muaj ib tug ruaj khov thiab du solder joint. Yog hais tias lub hwj chim ntawm cov hluav taws xob soldering hlau loj dhau lawm, cov cua kub ntau dhau yuav raug xa mus rau lub vuam workpiece, thiab overheating ntawm cov pob qij txha ntawm cov khoom yuav ua rau cov khoom puas tsuaj, thiab vuam tsis xws li tooj liab tev tawm ntawm cov khoom. luam tawm Circuit Board.
Hauv kev siv tiag tiag, kev saib xyuas tshwj xeeb yuav tsum tsis txhob xav tias qhov qis dua lub zog ntawm cov hlau soldering, qhov tsawg dua nws yuav hlawv cov khoom. Ua piv txwv welding high-power triode ua piv txwv, yog tias koj siv lub tshuab hluav taws xob qis hluav taws xob, nws tsis tuaj yeem muab cua sov txaus sai sai tom qab nws sib cuag nrog cov khoom, thiab thaum lub vuam sib txuas tsis ncav cuag qhov kub thiab txias thiab cov hlau soldering nyob twj ywm. rau ib lub sij hawm ntev, lub tshav kub yuav kis mus rau tag nrho Nyob rau hauv lub triode, nws yog heev yooj yim mus ua kom kub ntawm cov tuag mus txog rau theem ntawm kev puas tsuaj.
Thaum soldering ntau yam, koj tuaj yeem xa mus rau cov lus hauv qab no los xaiv cov khoom siv hluav taws xob hluav taws xob.
1. General printed circuit board, installation hlau: 250 degree ~ 350 degree, 20W internal cua sov hom, 30W lwm yam cua sov.
2. Integrated Circuit Court: 250 degree ~ 350 degree, 20W sab hauv tshav kub hom, qhov kub thiab txias hom, lub zog cia hom.
3. Solder lugs, potentiometers, 2 ~ 8W resistors, siab zog raj: 350 degree ~ 450 degree, 30 ~ 50W sab hauv cua sov hom, kub hloov hom 50 ~ 75W sab nraud cua sov hom.
4. Cov khoom loj xws li cov resistors loj tshaj 8W, cov xov hlau saum toj no 2A: 400 degree ~ 550 degree, 100W sab hauv cua sov hom, 150 ~ 200W sab nraud cua sov hom.
5. Hlau daim hlau, thiab lwm yam.: 500 degree ~ 630 degree, sab nraud tshav kub los yog nplaim taws soldering saum 300W.
6. Kev tu thiab kev debugging ntawm cov khoom siv hluav taws xob dav dav: 250 degree ~ 350 degree, 20W sab hauv cov cua sov hom, hom kub tsis tu ncua, hom induction, lub zog cia hom, hom ob hom.
Kev ceev faj rau kev siv hluav taws xob soldering hlau
1. Thaum lub tshuab hluav taws xob tsis siv rau lub sijhawm ntev, lub zog yuav tsum tau muab tua rau lub sijhawm. Txhawm rau kom tsis txhob nrawm oxidation ntawm cov tub ntxhais hlau soldering thiab ua rau lub neej ua haujlwm luv;
2. Ua ntej yuav tua cov hlau soldering, tin taub hau ntawm cov hlau soldering. Txhawm rau tiv thaiv kom nrawm oxidation.
3. Kev ua txhaum cai thiab kev saib xyuas ntawm cov hluav taws xob soldering hlau. Feem ntau cov teeb meem ntawm cov hluav taws xob soldering hlau yog: hluav taws xob soldering hlau tsis kub tom qab tau energized, lub soldering hlau taub tsis "noj" tin, thiab soldering hlau yog them, thiab lwm yam. Tam sim no coj cov cua sov 20W hluav taws xob soldering hlau. ua piv txwv los piav qhia.
A. Cov hlau soldering tsis kub tom qab tau muab tso rau:
Ntsuas ob qhov kawg ntawm lub ntsaws nrog lub ohm thaiv ntawm lub multimeter los xyuas seb puas muaj qhov qhib Circuit Court txhaum;
Yog tias tsis muaj qhov cuam tshuam qhib qhov hluav taws xob, tom qab ntawd siv lub multimeter los ntsuas cov hlau lead ntawm ob qhov kawg ntawm cov tub ntxhais hlau soldering. Yog tias rab koob tsis txav mus, hloov nws nrog ib qho tshiab soldering hlau core;
Yog hais tias tus nqi tsis kam ntawm ob txoj hlua hlau ntawm cov tub ntxhais hlau soldering yog li ntawm 2.5KΩ, nws txhais tau hais tias cov tub ntxhais hlau hlau tsis zoo, nws muaj peev xwm ua rau cov hlau lead hlau tawg, thiab kev sib koom ua ke hauv lub skewer raug txiav.
B. Lub taub hau ntawm cov hlau soldering yog them
Cov kab hluav taws xob tsis raug txuas mus rau lub davhlau ya nyob twg ntawm txoj kab hauv av;
Cov hlua hluav taws xob poob los ntawm cov hlau txuas txuas ntawm cov ntsia hlau thiab tom qab ntawd tsoo cov hlau txuas hauv av, ua rau lub taub hau hlau soldering yuav tsum tau hluav taws xob;
Cov dej xau los ntawm winding ntawm lub hwj chim txhuas hlau; leakage ntawm lub zog hauv av hlau nws tus kheej.
C. Lub taub hau ntawm cov hlau tsis "noj" tin
Tom qab siv lub taub hau rau lub sijhawm ntev, nws yuav tsis "noj" tin vim oxidation, thiab yuav tsum tau hloov lub taub hau tshiab;
Lub taub hau ntawm cov hlau tsis kub thiab tsis noj tin. Rau cov kev daws teeb meem, thov xa mus rau "Lub soldering hlau tsis kub tom qab tau energized".
4. Vuam txoj haujlwm tseem ceeb
A. Kev npaj ua ntej vuam
Cov ntaub ntawv: suav nrog cov ntaub ntawv ncaj qha thiab cov ntaub ntawv pabcuam, ua tib zoo saib seb cov khoom siv vuam puas muaj qhov xav tau polarity, seb cov ko taw puas yog oxidized, oily, thiab lwm yam, thiab seb puas muaj cov kev cai tshwj xeeb rau vuam kub thiab lub sijhawm thaum vuam;
Cov cuab yeej thiab cov khoom siv: nyob ntawm cov khoom siv vuam, yuav tsum muaj cov tin hlau tuav, cov thawv ntim khoom, vuam torches, soldering chaw nres tsheb, tweezers, txiav pliers, thiab lwm yam. , thiab tus neeg teb xov tooj yuav tsum hnav lub dab teg tiv thaiv zoo li qub;
B. Siv vuam
Npaj cov hlau nplaum thiab cov hlua hlau taub hau, thiab ua kom cov hlau taub hau huv si;
Cua sov lub vuam (cov cua sov tiv thaiv ko taw thiab cov ntaub qhwv tib lub sijhawm);
Melting solder: Thaum lub vuam yog rhuab mus rau ib tug kub uas yuav yaj lub solder, muab lub tin hlau rau ntawm lub solder sib koom, thiab lub solder pib yaj thiab ntub lub solder sib koom;
Tom qab ntxiv qhov tsim nyog solder rau qhov sib koom ua ke, tshem tawm cov tin hlau;
Thaum lub solder tau wetted tag nrho cov sib koom tes, tshem tawm cov hlau soldering ntawm ib tug kwv yees li 45 degree kaum.
Cov txheej txheem saum toj no tau ua tiav nyob rau hauv li 2 mus rau 3 vib nas this rau cov pob qij txha dav dav. Nws yuav tsum tau muab sau tseg tias cov khoom txuas txuas yuav tsum tsis txhob shaken ua ntej lub solder yog kiag li solidified kom tsis txhob dag soldering.
C. Kev kho mob tom qab vuam
Thaum lub soldering tiav lawm, xyuas kom tsis muaj soldering, tsis ncaj ncees lawm soldering (rov qab polarity soldering), luv Circuit Court, virtual soldering, thiab lwm yam., thiab ntxuav cov residues ntawm PCBA xws li: tin slag, tin chips, tivthaiv taw, thiab lwm yam.
5. Vuam ntawm ob peb yam yooj yim
A. Welding ntawm cam khwb cia hlau Cheebtsam
Cov khoom siv hluav taws xob ua los ntawm cov thermoplastic. Xws li micro keyboards, connectors, thiab lwm yam., uas tsis tuaj yeem tiv taus qhov kub thiab txias, yog tias lub sij hawm cua sov tsis tswj tau, nws yooj yim heev los ua cov yas deformation, uas ua rau cov khoom tsis ua haujlwm lossis kev ua haujlwm tsis zoo thiab qhov tsis zoo. Yog li ntawd, cov khoom hauv qab no yuav tsum tau them sai sai rau thaum ua tau vuam cov khoom xws li:
Tin cov tivthaiv taw ua ntej kom yooj yim soldering thiab shorten lub sij hawm soldering;
Thaum soldering, nws yog ib qho tsim nyog yuav tau welding ib ko taw los ntawm ib ko taw kom luv lub sij hawm cua sov ntawm cov khoom taw;
Lub hau ntawm cov hlau soldering yuav tsum tsis txhob siv lub zog ntawm cov ko taw;
Nws yog tsim nyog los xaiv tin hlau nrog me me ntawm flux, thiab txoj kab uas hla ntawm tin hlau yog ф0.6-0.8mm;
Tsis txhob kov cov khoom ua ntej cov ntaub ntawv yas txias.
B, FET thiab integrated circuit welding
MOSFET, tshwj xeeb tshaj yog lub rooj vag insulated hom tivthaiv, vim hais tias ntawm nws cov input impedance siab, me ntsis carelessness tuaj yeem ua rau nws sab hauv kev puas tsuaj thiab ua tsis tiav. Bipolar integrated circuits, vim muaj kev sib koom ua ke siab, tab sis cov txheej txheej txheej txheej txheej yog nyias nyias, thiab nws yooj yim puas thaum nws raug kub heev. Tsis muaj ib qho ntawm cov kab hluav taws xob saum toj no tuaj yeem tiv taus qhov kub ntawm 250 degree. Yog li ntawd, cov khoom hauv qab no yuav tsum tau them sai sai rau thaum vuam:
Lub sijhawm vuam yuav tsum tsis pub tshaj 3 vib nas this, thiab yuav tsum luv li sai tau raws li qhov ua tau zoo ntawm kev ua kom ntub dej;
Siv los tiv thaiv zoo li qub kub kub soldering hlau, qhov kub yog tswj ntawm 230 ° C ~ 250 ° C;
Lub zog ntawm cov hluav taws xob soldering hlau yuav tsum tsis pub tshaj 20W rau cov cua sov sab hauv thiab 30W rau cov cua sov sab nraud;
Yog tias qhov sib xyaw ua ke tsis siv lub qhov (socket), thaum nws ncaj qha mus rau lub rooj tsavxwm PCB, qhov kev nyab xeeb vuam kab ke yog hauv av davhlau ya nyob twg → tso zis davhlau ya nyob twg → lub hwj chim davhlau ya nyob twg → input terminal.
