SMD mounting: soldering puag soldering thiab technology. SMD mounting tsev

Zoo soldering txawm hais tias tsis yog raws li ib qho tseem ceeb raws li qhov tseeb qhov kev tso kawm ntawm tej ntsiab, tiam sis nws kuj plays ib tug tseem ceeb luag hauj lwm. Yog li ntawd, peb xav txog lub SMD los ua ke - yog xav tau thiab yuav ua li cas nws yuav tsum tau ua nyob rau hauv tsev rau nws.

Muab cia tsim nyog thiab kev coj cwj pwm kev kawm

Rau optimum kev ua tau zoo, peb yuav tsum muaj:

1. Solder.
2. Ciaj tais los ciaj.
3. Soldering hlau.
4. Ib tug me me nqus dej.
5. Sab cutters.

Ua ntej, koj yuav tsum muaj xws li ib tug soldering hlau mus rau hauv lub qhov hluav taws xob. Ces dej tsau cov ntaub nqus dej. Thaum lub soldering hlau yog rhuab mus cuag ib tug twg hais tias nws yuav yaj lub solder, nws yog tsim nyog los npog lawv (solder) plev. Ces so nws nrog ib tug phuam ntaub nqus dej. Yog li ntawd nws yog tsim nyog yuav tsum tsis txhob excessively ntev sib cuag, vim nws yog fraught nrog hypothermia. Yuav kom tshem tawm cov qub solder residues yuav tsum wiped nyob rau hauv lub puab tsaig stinger (thiab kom nws huv si). Kev kawm yog nqa tawm nrog hwm rau xov tooj cua. Txhua yam yog ua li cas nrog ciaj tais los ciaj. Ua li no, khoov lub xov tooj cua terminals li hais tias lawv yuav nkag mus rau hauv lub qhov board tsis muaj teeb meem. Tam sim no wb tham txog yuav ua li cas nqa tawm lub installation ntawm SMD Cheebtsam.

Pib nrog lub ntsiab lus

Xub thawj, lub Cheebtsam yog muab tso rau hauv lub qhov ntawm lub Rooj Tswjhwm uas yog meant rau lawv. Nyob rau hauv cov ntaub ntawv no, kom ib lub qhov muag rau qhov tseeb hais tias muaj yog ib tug polarity. Qhov no yog tshwj xeeb yog ib qho tseem ceeb rau cov khoom xws li electrolytic capacitors thiab diodes. Raws li los ntawm ib tug me ntsis diluted cov uas nrhiav tau hais tias cov kev tivthaiv tsis poob tawm ntawm lub taag qhov chaw (tab sis tsis sib zog heev nws). Cia li ua ntej koj pib soldering, tsis txhob hnov qab mus tshiav txoj kev lwj siab li ntaub nqus dej dua. Tam sim no cia saib yuav ua li cas lub SMD mounting ntawm lub tsev nyob rau theem ntawm soldering.

Fastening qhov chaw

Soldering ntsis yuav tsum tau positioned ntawm cov card thiab cov davhlau ya nyob twg rau sov qhov chaw nyob qhov twg brazing yuav muab qhov chaw. Yuav kom tsis tso saib qhov khoom ntawm lub cev, lub sij hawm no yuav tsum tsis txhob ntau tshaj 1-2 vib nas this. Koj muaj peev xwm ces coj mus rau qhov chaw ntawm soldering cov tshuaj lo. Thov nco ntsoov tias nyob rau hauv no theem ib tug neeg tej zaum yuav tsuag flux, li ntawd, yuav tau ceev faj. Tom qab lub caij thaum cov yuav tsum tau npaum li cas lub sij hawm rau yaj lub solder, nws yog tsim nyog los thim hlau los ntawm qhov chaw nyob qhov twg cov khoom yog soldered. Rau nws cov teeb tis yog tsim nyog los tuav lub soldering ntsis rau ib tug thib ob. Ces, tsis tau tsiv ntawm yam khoom no, koj yuav tsum tshem tawm cov ntaus ntawv. Nws yuav siv sij hawm ib tug ob peb lub sij hawm, thiab lub soldering chaw txias cia. Tag nrho cov no lub sij hawm nws yuav tsum tau xyuas kom muaj hais tias cov khoom muaj tsis tau hloov nws txoj hauj lwm. Surpluses yuav txiav siv ib sab cutter. Tab sis saib mus rau nws hais tias twb tsis puas los ntawm qhov soldering qhov chaw.

Xyuas qhov zoo tshaj ntawm kev ua hauj lwm

Saib cov uas ua nto mounting SMD:

1. Qhov tseeb tiag mas, yuav tsum tau kev cob cog rua cov kev sib cuag cheeb tsam thiab tso zis qhov chaw. Nyob rau hauv no brazing nws tus kheej yuav tsum tau muaj ib tug swm thiab ci iab nto.
2. Nyob rau hauv cov ntaub ntawv ntawm ib tug kheej kheej zoo los yog connectivity nrog nyob ib sab hu los yuav tsum yog rhuab solder thiab tshem tawm cov tshaj. Khaws nyob rau hauv lub siab hais tias tom qab ua hauj lwm nrog nws nyob rau ntxeev ntawm lub soldering hlau yog ib txwm ib qhov nqi ntawm nws.
3. Yog hais tias muaj yog ib tug matte nto khawb thiab yaj lub solder dua thiab, tsis muaj feem mus, cia nws txias. Yog hais tias tsim nyog, koj muaj peev xwm ntxiv nws rov qab nyob rau hauv me me xov tooj.

Yuav kom tshem tawm cov flux residues los ntawm lub Rooj Tswjhwm Saib, koj muaj peev xwm siv ib tug haum kuab. Tab sis lub lag luam no yog tsis tsim nyog, vim hais tias nws muaj tsis cuam tshuam thiab tsis cuam tshuam rau hauj lwm ntawm lub schemes. Tam sim no cia tus mloog soldering kev tshawb xav. Tom qab ntawd peb mus los ntawm cov yam ntxwv ntawm txhua kev xaiv.

kev tshawb xav

Solder kev twb kev txuas to taub tej co siv lwm yam, ntau fusible. Lub electronics siv rau qhov no lo, nyob rau 40% cov hlau lead thiab 60% tin. Qhov no alloy yuav kua twb nyob rau hauv 180 degrees. Niaj hnub nimno solders tsim raws li nyias leeg, uas yog twb tau sau nrog cov cob, kom muaj raws li cov kev ua ntawm flux. Lub rhuab solder muaj peev xwm tsim ib tug nrog kev twb kev txuas, yog hais tias tus nram qab no tej yam kev mob:

1. Nws yog tsim nyog los tau ntxuav qhov chaw ntawm qhov chaw yuav tsum tau soldered. Ua li no, nws yog ib qho tseem ceeb rau tshem tawm tag nrho cov oxide films uas tsim lub sij hawm.
2. Lub ib feem yuav tsum tso nyob rau hauv cov tshuaj lo rhuab mus rau ib tug kub uas yog txaus rau yaj lub solder. Ib co teeb meem no tshwm sim thaum uas muaj ib tug loj cheeb tsam nrog zoo thermal conductivity. Tom qab elementary tej zaum yuav tsis muaj hwj huam txaus soldering hlau los ua cua sov qhov chaw.
3. Koj yuav tsum saib xyuas ntawm kev tiv thaiv los ntawm qhov kev txiav txim ntawm oxygen. Qhov no ua hauj lwm muaj peev xwm ua tau colophon uas tas ib tug tiv thaiv zaj duab xis.

Qhov feem ntau heev uas tsis

Tam sim no cia peb xav txog peb lub feem ntau yuam kev thiab yuav ua li cas los txhim kho cov lawv:

1. solder pob qij txha kov qhov ntxeev ntawm lub soldering taub. Nyob rau hauv cov ntaub ntawv no heev me ntsis tshav kub yog nkag. Tsim nyog rau plev thov thiaj li mus rau qhov chaw ntawm lub ntsis thiab soldering tsim tus loj tshaj hu cheeb tsam. Ces tig SMD mounting zoo.
2. Siv heev me ntsis solder thiab los mas loj lub sij hawm. Thaum cov txheej txheem pib, nws muaj lub sij hawm qhuav ib feem ntawm cov flux. Solder tsis tau txais ib tug tiv thaiv txheej, raws li ib tug tshwm sim - ib tug oxide zaj duab xis. Thiab yuav ua li cas yuav ua rau lub installation ntawm SMD nyob hauv tsev? No kev soldering viav vias ob soldering hlau thiab solder.
3. Dhau thaum ntxov tshem tawm ntawm qhov ntxeev ntawm lub solder pob qij txha. Thaum tshav kub kub yuav nyuaj thiab ceev ceev.

Koj muaj peev xwm coj ib tug capacitor rau SMD mounting thiab sau nws nyob rau hauv tes.

Brazing free hlau

Tam sim no peb yuav tau xyaum. Piv txwv peb muaj ib tug LED thiab resistor. Lawv yuav tsum solder lub cable. Nws tsis yog siv Circuit Court laug cam, pins thiab lwm yam ancillary khoom. Yuav kom ua tiav lub hom phiaj no koj yuav tsum tau ua cov hauj lwm:

1. Tshem tawm cov rwb thaiv tsev ntawm cov hlau xaus. Lawv yuav tsum huv si, vim hais tias lawv tau muaj kev tiv thaiv los ntawm dej thiab oxygen.
2. Cov strands yog cov xov. Qhov no tiv thaiv lawv tom ntej razlohmachivanie.
3. Tinned hlau xaus. Thaum lub sij hawm tus txheej txheem no nws yog tsim nyog los coj lub stinger sov hlau ua ke nrog cov tshuaj lo (uas yuav tsum tau faib evenly tshaj lub saum npoo).
4. Luv zog cov kev xaus ntawm lub resistor thiab cov LED. Ces nws yog tsim nyog los tin lawv (tsis muaj teeb meem li cas laus los yog qhov chaw tshiab yog siv).
5. Peb tuav cov terminals nyob rau hauv thaum uas tig mus thiab ua ib tug me me npaum li cas ntawm solder. Yuav ua li cas cov Team sib, koj yuav tsum tau sai sai rho cov soldering hlau xwb lawv yuav tsum tau tusyees puv. Kom txog rau thaum cov tshuaj lo hardens kiag li, qhov khoom tsis tau kov. Yog hais tias nws puas tau tshwm sim, ces muaj yog micro-tej kab nrib pleb, uas adversely cuam tshuam tus neeg kho tshuab thiab hluav taws xob khoom ntawm lub tebchaw.

soldering

Nyob rau hauv cov ntaub ntawv no, koj yuav tsum muab tso rau tsawg siab tshaj yav dhau los ib tug, vim hais tias ntawm no lub qhov card ua si zoo lub luag hauj lwm ntawm lub retainer kom paub meej. Tab sis txawm no ib qho tseem ceeb kev. Feem ntau qhov tshwm sim ntawm kev ua hauj lwm ntawm beginners yog hais tias lub tswvyim yog pib los zoo li ib tug loj thiab tas mus li neeg xyuas pib. Tab sis lub point yog yooj yim, li ntawd tom qab ib tug me ntsis xyaum cov kev tshwm sim yuav tsum nyob rau ib tug dlej theem.

Tam sim no cia saib yuav ua li cas lub SMD los ua ke nyob rau hauv cov ntaub ntawv no. Chiv, soldering ntsis thiab solder nyob rau tib lub sij hawm txhab khoom mus rau soldering point. Thiab yuav tsum muaj rhuab thiab ua kev tshawb pom, thiab lub Rooj Tswjhwm Saib. Nws yog tsim nyog kom txoj kev lwj siab mus txog rau thaum cov tshuaj lo tusyees npog tag nrho cov qhov chaw ntawm kev sib cuag. Ces koj yuav txiav nyob ib ncig ntawm ib lub voj voog ib ncig ntawm lub kho site. Nyob rau hauv cov ntaub ntawv no, cov tshuaj lo yuav tsum tau tsiv nyob rau hauv kev coj rov qab. Peb pom hais tias nws yog uniformly faib nyob rau hauv tag nrho hu rau cheeb tsam. Tom qab hais tias, tshem tawm cov solder. Cov kauj ruam kawg - ib tug ceev tshem ntawm txoj kev lwj siab los ntawm cov tshuaj lo pob qij txha. Tos kom txog thaum cov tshuaj lo yuav tau nws kawg daim ntawv thiab thiaj. Tias yog li ntawd nyob rau hauv cov ntaub ntawv no, ib tug mounting SMD. Sau Circuit Court board nyob rau hauv thawj cov me nyuam yuav tsis zoo li, thiaj kub, tab sis thaum lub sij hawm koj yuav kawm tau mus ua nyob rau hauv xws li ib tug theem uas yuav ua tsis tau distinguished, thiab nyob rau hauv lub Hoobkas version.