Kev nkag siab zoo thiab cov qauv rau kev siv hlau soldering
1: Nkag siab txog hluav taws xob soldering hlau. Cov hluav taws xob soldering hlau yog cov cuab yeej siv feem ntau hauv kev vuam.
1. Muaj nuj nqi: Nws hloov hluav taws xob hluav taws xob mus rau lub zog hluav taws xob kom sov thiab vuam qhov chaw vuam. Txawm hais tias vuam yog qhov ua tau zoo nyob ntawm qhov zoo ntawm kev tswj tau zoo. Feem ntau hais lus, qhov loj dua lub zog ntawm cov hluav taws xob soldering hlau, qhov kub ntau dua, thiab qhov kub ntawm cov hlau soldering ntau dua.
2. Feem ntau siv cov hluav taws xob soldering hlau yog: 20W; 25 W; 30W; 40W; 60 W; 100 W.
3. Cua sov hom ntawm hluav taws xob soldering hlau: hom cua sov sab hauv; hom cua sov sab nraud.
4. Feem ntau siv cov khoom siv hluav taws xob: cov khoom siv hlau muag, cov khoom siv hluav taws xob, cov tweezers, electrostatic bracelet, kab pheeb ces kaum pliers, absorbent sponge.
2: Kev ceev faj rau kev siv hlau soldering
1. Kev npaj ua ntej siv cov hlau soldering.
Cov hluav taws xob soldering hlau yuav tsum tau tinned ua ntej siv. Txoj kev tshwj xeeb yog: tshav kub ntawm hluav taws xob soldering hlau. Thaum lub solder tsuas yog melted, siv tin hlau kom sib npaug ntawm cov hlau taub hau kom cov hlau taub hau sib npaug nrog ib txheej ntawm cov tin. (Faj seeb: Nws yog ib qho tshuaj tiv thaiv rau cov hlau uas tau muag tshiab kom tawm cov pa taws thaum lub caij cua sov)
2. Ua haujlwm kom raug.
Nws tuaj yeem ua kom lub cev thiab lub hlwb noj qab haus huv ntawm cov neeg ua haujlwm thiab txo qis kev raug mob ntawm kev ua haujlwm. Txhawm rau txo qhov kev puas tsuaj rau tib neeg los ntawm cov tshuaj tsis haum tshuaj tawm thaum lub solder yog rhuab thiab txo cov pa phem uas nqus tau, feem ntau, qhov kev ncua deb ntawm cov hlau mus rau lub qhov ntswg yuav tsum tsis pub tsawg tshaj 20cm, feem ntau yog 30cm. tsim nyog.
3. Ua ntej siv cov hlau soldering, xyuas seb qhov hluav taws xob siv puas yog raws li qhov nominal voltage ntawm cov hlau soldering.
4. Cov hlau soldering yuav tsum yog av thiab zoo hauv av.
5. Hnav ib txoj hlua electrostatic thaum siv cov hlau soldering, thiab cov hlua hluav taws xob electrostatic yuav tsum tau ua kom zoo. (Ceeb Toom: Cov hluav taws xob zoo li qub hauv av xaim thiab cov hlau hlau hauv av yuav tsum tau sib cais)
6. Tsis txhob khob, disassemble los yog nruab qhov hluav taws xob cua sov qhov chaw ntawm lub soldering hlau ntawm lub siab nyiam tom qab nws yog powered.
7. Cov hlau nplaum yuav tsum tau ua kom qhuav thiab tsis txhob siv rau hauv qhov chaw ntub dej ntau dhau los yog los nag.
8. Thaum tshem tawm cov hlau nplaum, tua lub hwj chim.
9. Tom qab kaw lub hwj chim, siv cov hluav taws kub uas seem los muab ib txheej ntawm cov tin rau ntawm lub taub hau hlau los tiv thaiv cov taub hau hlau.
10. Thaum muaj txheej txheej oxide dub rau ntawm cov hlau nplaum, so cov oxide nrog ib daim txhuam cev absorbent thiab siv cov tin tam sim ntawd. (Tsis txhob siv rab riam los khawb)
11. Daim txhuam cev yog siv los sau cov tin slag, tin hlaws thiab oxides. Nws yog qhov tsim nyog los nyem nws nrog koj txhais tes kom txaus kom tsis txhob muaj dej tawm.
12. Lub tshuab hluav taws xob yuav tsum tsis txhob siv lub zog ntev ntev yam tsis siv. Qhov no yuav yooj yim ua rau cov tub ntxhais hlau soldering kom nrawm oxidation thiab hlawv tawm, ua rau nws lub neej luv. Nyob rau tib lub sijhawm, lub taub hau hlau yuav raug oxidized vim cua sov mus ntev, thiab tej zaum yuav "hlawv" thiab tsis "siav". tin"
Peb: Solder
Solder yog cov hlau fusible uas txuas cov khoom sib txuas ua rau cov ntsiab lus sib txuas ntawm lub rooj tsav xwm luam tawm. Tin (Sn) yog ib qho mos mos, malleable silver-dawb hlau nrog lub melting point ntawm 232 degree. Nws muaj cov tshuaj lom neeg ruaj khov ntawm chav sov, tsis yooj yim oxidized, tsis plam nws cov xim hlau, thiab muaj zog tiv thaiv atmospheric corrosion. Lead (Pb) yog ib qho mos, lub teeb xiav-dawb hlau nrog lub melting point ntawm 327 degree. High-purity lead muaj zog tiv thaiv atmospheric corrosion thiab zoo tshuaj stability, tab sis nws yog teeb meem rau tib neeg lub cev. Ntxiv ib qho kev faib ua feem ntawm cov hlau lead thiab ib qho me me ntawm lwm cov hlau rau tin tuaj yeem tsim cov khoom uas tsis tshua muaj melting point, zoo fluidity, muaj zog adhesion rau cov khoom thiab cov xov hlau, siab mechanical zog, zoo conductivity, tsis yooj yim rau oxidize, zoo corrosion kuj, thiab bright solder pob qij txha. Zoo nkauj solder, feem ntau hu ua solder. Solder tuaj yeem muab faib ua 15 hom raws li cov ntsiab lus tin. Raws li cov ntsiab lus tin thiab impurities
Cov tshuaj muaj pes tsawg leeg tau muab faib ua peb qib: S, A, thiab B. Hlau soldering feem ntau yog siv hauv phau ntawv soldering. (Tseem muaj ib puag ncig tus phooj ywg tsis muaj cov hlau lead uas feem ntau siv niaj hnub no)
Plaub: Flux
Flux feem ntau tuaj yeem muab faib ua inorganic flux, organic flux thiab resin flux, uas tuaj yeem yaj thiab tshem tawm oxides ntawm cov hlau nto thiab npog lawv thaum vuam thiab cua sov.
Nyob ib puag ncig ntawm cov hlau kom cais tawm ntawm huab cua thiab tiv thaiv cov hlau los ntawm oxidizing thaum rhuab; nws tuaj yeem txo qhov nro ntawm lub melted solder thiab pab txhawb kev ntub dej ntawm cov solder. (rosin, natural resin flux)
