Dab tsi yog qhov cuam tshuam rau lub neej ntawm cov hlau lead-dawb soldering hlau taub? Yuav ua li cas ncua nws
Vim qhov nce ntawm qhov melting point ntawm cov hlau lead-free solder, qhov ua hauj lwm kub kuj nce, uas ua rau ib tug heev ceev ceev corrosion tus nqi ntawm soldering hlau taub thiab ib tug shortened kev pab cuam lub neej. Qhov no yog ib qho kev piav qhia tsim nyog. Thaum soldering tsis muaj txhuas, qhov yuav tsum tau soldering kub yog ntau dua li qhov zoo tib yam soldering, uas yog ib qho ntawm cov laj thawj tseem ceeb rau shortening lub neej ntawm soldering hlau taub. Qhov kub thiab txias, qhov ceev ntawm oxidation. Tom qab siv cov hlau lead-dawb soldering, yog vim li cas lub neej kev pab cuam ntawm lub solder ntsis luv luv?
Feem ntau, cov qauv kev ua haujlwm yog feem ntau yog ua los ntawm tooj liab sab hauv, thiab hlau (hlau plating txheej) yog plated rau sab nraud, thaum lub hauv ntej ntawm cov hlau plating txheej yog plated nrog tin (tin plating txheej), thiab tom qab kawg yog. plated nrog anti-oxidation chromium. Txij li cov tin thiab hlau kuj yog cov hlau reactive heev, lawv tuaj yeem yooj yim sib xyaw ua cov hlau sib xyaw, tshwj xeeb tshaj yog nyob rau qhov kub thiab txias. Ntxiv mus, cov flux siv nyob rau hauv soldering kuj yog ib qho catalyst kom ceev lawv cov tshuaj sib xyaw hlau. Tus nqi ntawm kev tsim cov hlau sib xyaw yuav txawv nrog qhov sib txawv ntawm qhov sib txawv. Qhov siab dua qhov kub, qhov tsim tau sai dua, tshwj xeeb tshaj yog ntawm 400 degree lossis siab dua.
Thaum soldering, tin thiab hlau yuav txuas ntxiv tsim cov tshuaj tiv thaiv sib xyaw, thiab vim tias cov hlau sib xyaw ua ke yuav tev tawm ntawm qhov chaw ntawm lub hau txheej, lub hau txheej yuav maj mam eroded tam sim ntawd, thiab tom qab ntawd cov tin yuav sai sai erode cov tooj liab hauv. lub ntsis, yuav nws thiaj li ua rau lub vuam nozzle perforate nyob rau hauv ib tug luv luv lub sij hawm.
Solder nrog cov khoom sib txawv yuav muaj qhov sib txawv yaig nrawm ntawm lub taub hau. Daim duab saum toj no qhia tau hais tias: tin ntxiv {{0}}.7 tooj liab muaj qhov nrawm tshaj plaws yaig ntawm lub taub hau, ces tin ntxiv rau 3.5 nyiaj ntxiv 0.75 tooj liab, tin ntxiv 2 nyiaj ntxiv { {17}}.75 tooj liab ntxiv rau 3 bismuth, thiab thaum kawg tin plus 37 lead. Piv nrog cov tsoos eutectic solder (67/37 solder), ntawm qhov kub thiab txias ntawm 400 degree, tsis muaj cov hlau lead: tin ntxiv rau 3.5 nyiaj ntxiv rau 0.7 tooj liab, tus nqi corrosion ntawm lub taub hau yog 3 zaug sai dua. , thaum tin ntxiv 0.7 tooj liab 4 zaug sai dua.
■ Yuav ua li cas kom ntev lub neej ntawm cov lus qhia tsis muaj hlau lead
1. Thaum siv cov hlau tsis muaj hlau lead rau kev ua haujlwm, vim qhov kub tsis kam ntawm cov khoom thiab kev txiav txim siab ntawm kev ua haujlwm nyab xeeb, qhov ntsuas kub ntawm cov hlau nozzle feem ntau xav kom qis dua 350 degrees - 370 degrees;
2. Raws li qhov sib txawv ntawm kev ua haujlwm vuam ntawm cov hluav taws xob soldering hlau, nws yog ib qho tseem ceeb heev uas yuav tau xaiv qhov zoo tshaj plaws soldering hlau taub. Ib qho yooj yim soldering hlau taub yuav txo tau qhov kub ntawm lub soldering hlau taub thiab ua kom cov efficiency ntawm lub lag luam.
3. Qhov sib txawv ntawm cov sponges uas muaj dej zoo tib yam, nws yog ib qho tsim nyog yuav tsum siv cov hlau xaim hauv cov khoom siv ntxiv, uas yog, nws tsis txo qhov kub ntawm cov hlau taub hau, tab sis kuj ua lub luag haujlwm tu, thiab tseem tuaj yeem tshem tawm cov oxides ntawm lub taub hau. nto ntawm lub taub hau soldering. Teem lub hau ntawm cov hlau soldering kom tsawg li sai tau.
4. Thaum tsis siv ntau tshaj 10 feeb, lub hwj chim ntawm cov hluav taws xob soldering hlau yuav tsum raug txiav tawm.
5. Thaum lub taub hau ntawm cov hlau soldering yog oxidized thiab blackened, ua ntej siv solder nrog flux kom tshem tawm cov oxide. Yog tias nws tsis tuaj yeem muab tshem tawm, siv lub dip ua ntej.
6. Lub tshuab nqus hlau hlau ntawm tus neeg sawv cev nkag mus tshem tawm cov oxide ntawm qhov chaw, thiab tom qab ntawd siv cov khoom siv tshiab.
Ntxiv nrog rau kev raug mob corrosion, cov hlau lead-dawb soldering kuj tseem ua rau lub ntsej muag oxidation. Txawm hais tias qhov tsim ntawm cov hlau lead-dawb solder pob qij txha yuav tsum tau kub siab tshaj SnPb solder pob qij txha, nws tsis yog tsim nyog los ua kom kub ntawm cov hlau soldering kom ua tiav cov hlau lead-free soldering nyob rau hauv cov nqe lus ntawm ib txwm throughput yuav tsum tau ntawm kev lag luam; Txawm li cas los xij, kev txhim kho lub tshuab cua sov yuav tsum tau ua kom tshem tawm Cov Kub Kub Tshaj Tawm Txhim kho cov cua sov ua kom zoo ntawm cov khoom sib koom ua ke thiab txo qhov kub ntawm cov hlau soldering. Tsis tas li ntawd, yuav tsum tau siv lub tswv yim zoo dua qub kom tsis txhob muaj qhov kub thiab txias, uas yuav ua rau kom corrosion ntawm lub ntsis, nce cov nqi hloov pauv thiab lub sijhawm poob.
