Classification thiab xaiv cov hluav taws xob soldering hlau
Hluav taws xob soldering hlau yog cais raws li daim ntawv ntawm cov cua sov:
Sab hauv thiab sab nraud cua sov
Soldering hlau yog cais raws li kev tswj qhov kub thiab txias:
Ordinary hluav taws xob soldering hlau; kub-kho hluav taws xob soldering hlau; qhov kub thiab txias hluav taws xob soldering hlau
Cov cua sov sab hauv hluav taws xob soldering hlau muaj qhov zoo ntawm kev siv hluav taws xob tsawg, me me, lub teeb yuag, thiab cua sov ceev. Nws muaj ob lub zog ntsuas ntawm 20W thiab 25W, thiab tsim nyog rau cov khoom siv hluav taws xob me me, xws li xov tooj cua semiconductor.
Sab nraud tshav kub soldering hlau
Lub zog ntsuas hluav taws xob sab nraud hluav taws xob hluav taws xob yog 25W, 30W, 45W, 75W, 300W, thiab lwm yam.
Yog hais tias lub zog ntawm cov hluav taws xob soldering hlau siab dhau lawm, cov khoom yuav raug scalded; Yog hais tias lub zog me me dhau, yuav muaj virtual soldering los yog nyuaj rau melting lub solder.
Soldering cov ntaub ntawv (sib faib ua solder thiab flux):
Lub solder yog ib tug fusible hlau, thiab cov solder siv nyob rau hauv phau ntawv soldering yog ib tug tin-lead alloy. Nws muaj qhov zoo ntawm qhov qis melting point, siab mechanical zog, me me nto nro thiab muaj zog oxidation tsis kam.
Lub luag haujlwm ntawm cov flux yog tshem tawm cov oxides, sulfides, roj thiab lwm yam kab mob ntawm cov hlau nto, thiab tiv thaiv cov hlau los ntawm kev txuas ntxiv mus rau oxidize thaum lub sij hawm cua sov txheej txheem. Nyob rau tib lub sijhawm, nws kuj muaj cov txiaj ntsig ntawm kev txhim kho cov kev ua ntawm solder thiab hlau nto thiab ua kom ntub dej.
(1) Nws muaj cov nyhuv ntawm kev ntxuav qhov saum npoo ntawm cov hlau yuav tsum tau welded thiab solder.
(2) Lub melting point yuav tsum qis dua li ntawm tag nrho cov solders.
(3) Nws tuaj yeem tsim cov kua dej ntawm qhov vuam kub thiab muaj kev ua haujlwm ntawm kev tiv thaiv cov hlau nto.
(4) Nws muaj cov npoo tsis tshua muaj zog thiab tuaj yeem ntws nrawm thiab tusyees tom qab tau ua kom sov.
Solder resist yog ib hom kub resistant txheej, nws txoj haujlwm yog los tiv thaiv cov khoom uas tsis tas yuav tsum tau soldered ntawm lub rooj tsav xwm luam tawm.
Hom ntawm solder resist:
Kub curable solder tiv taus; UV lub teeb curable solder resist (photosensitive solder resist); Electron radiation curable solder tiv taus
Solder hlau yog siv rau kev siv phau ntawv soldering. Solder hlau yog tubular, ua los ntawm flux thiab solder ua ke, thiab cov khoom flux yog entrained nyob rau hauv lub solder raj. Cov flux feem ntau siv super-qib rosin raws li cov khoom siv matrix, thiab qee yam activator, xws li diethylamine hydrochloride, ntxiv. Cov khoom sib txawv ntawm cov tin-lead muaj cov ntsiab lus sib txawv.
Feem ntau siv cov xov hlau xws li Sn63Pb37 muaj qhov melting point ntawm 183 degree, thiab Sn62Pb36Ag2 muaj qhov melting point ntawm 179 degree. Txoj kab uas hla ntawm tubular solder hlau yog 0.2, 0.3, 0.4, 0.5, 0.6, {{17 }}.8, 1.{{20}} thiab lwm yam specifications. 0.5, 0.6 solder hlau tuaj yeem siv rau cov khoom siv perforated.
Kev xaiv ntawm cov hlau soldering
Tsim nyog xaiv ntawm hluav taws xob soldering hlau yog ncaj qha cuam tshuam rau kev txhim kho vuam zoo thiab efficiency. Yog hais tias lub hwj chim ntawm cov hluav taws xob soldering hlau siv me me, qhov kub ntawm soldering yog tsawg dhau, ua rau cov pob qij txha tsis du thiab ruaj khov, thiab txawm tias lub solder tsis tuaj yeem yaj, ua rau cov khoom siv tsis tau. Yog hais tias lub zog ntawm cov hluav taws xob soldering hlau yog siab dhau lawm, cov pob qij txha ntawm cov khoom siv yuav raug overheated, ua rau cov khoom puas thiab ua rau cov ntawv ci tooj liab ntawm cov ntawv luam tawm hauv Circuit Court poob.
