Peb Cov Lus Qhia Thaum Soldering Hlau Soldering
1. Vuam txoj kev
Cov khoom sib txawv ntawm cov khoom siv sib txawv yuav tsum tau ua haujlwm sib txawv ntawm cov hlau soldering. Thaum txiav txim siab qhov kub ntawm cov hlau taub hau, koj tuaj yeem kov cov hluav taws xob soldering hlau rau rosin. Yog tias cov hlau nplaum ua lub suab "squeak" thaum nws kov cov rosin, nws txhais tau hais tias qhov kub thiab txias yog; Yog tias tsis muaj suab nrov, tab sis cov rosin tuaj yeem ua rau me ntsis yaj, nws txhais tau hais tias qhov kub thiab txias yog qis. ; Yog hais tias lub taub hau ntawm cov hlau soldering tawm ntau cov pa luam yeeb sai li sai tau thaum nws kov cov rosin, nws txhais tau hais tias qhov kub thiab txias heev.
Feem ntau hais lus, muaj peb kauj ruam tseem ceeb hauv kev vuam:
Ua ntej yaj ib qho me me ntawm cov solder thiab rosin ntawm lub taub hau ntawm cov hlau, thiab ua kom cov hlau taub hau thiab cov hlau nplaum ntawm cov hlua khi tib lub sijhawm.
Ua ntej cov flux ntawm qhov kawg ntawm cov hlau soldering tau evaporated, kov lub ntsis ntawm cov hlau soldering thiab cov hlau solder mus rau lub solder sib koom tib lub sij hawm kom pib melting lub solder.
Thaum lub solder tau infiltrated tag nrho cov solder sib koom, tshem tawm cov soldering hlau thiab solder hlau nyob rau tib lub sij hawm los yog tshem tawm cov tin hlau ua ntej, thiab ces tawm lub soldering hlau taub thiab solder hlau tom qab lub solder sib koom yog tag nrho thiab zoo nkauj.
Cov txheej txheem vuam feem ntau haum rau 2 mus rau 3 vib nas this. Thaum soldering integrated circuits, tus nqi ntawm solder thiab flux yuav tsum nruj me ntsis tswj. Txhawm rau kom tsis txhob muaj kev puas tsuaj rau kev sib xyaw ua ke vim qhov tsis zoo ntawm cov hluav taws xob hluav taws xob hluav taws xob los yog cov hluav taws xob hluav taws xob ntawm lub tshuab hluav taws xob sab hauv rau lub plhaub, hauv kev siv tswv yim, cov txheej txheem ntawm kev tshem tawm lub hwj chim ntsaws ntawm cov hluav taws xob soldering hlau feem ntau yog siv rau solder thaum nws kub.
2. Vuam zoo
Thaum vuam, nws yuav tsum tau ua kom ntseeg tau tias txhua qhov sib koom ua ke yog ruaj khov thiab sib cuag zoo. Lub ntsiab lus tin yuav tsum ci, du thiab tsis muaj burrs, thiab tus nqi ntawm cov tin yuav tsum yog nruab nrab. Lub tin thiab cov khoom yuav tsum tau welded yog ruaj khov, thiab yuav tsum tsis txhob muaj kev vuam cuav lossis cuav vuam. False welding txhais tau hais tias tsuas yog ib qho me me ntawm cov tin yog welded ntawm qhov sib koom ua ke, ua rau kev sib cuag tsis zoo thiab tsis sib xws. False welding txhais tau hais tias nws zoo li welded rau saum npoo, tab sis nws tsis yog welded. Qee zaum cov hlau lead tuaj yeem rub tawm los ntawm kev sib koom ua ke los ntawm kev rub tawm ntawm tes.
3. Cov khoom siv vuam
Rau cov ntaub ntawv uas tsis yooj yim rau welding, cov txheej txheem ntawm plating ua ntej thiab ces vuam yuav tsum tau siv. Piv txwv li, rau txhuas qhov chaw uas tsis yooj yim rau welded, qhov saum npoo tuaj yeem plated nrog ib txheej ntawm tooj liab lossis nyiaj, thiab tom qab ntawd welded. Txoj kev tshwj xeeb yog ntxiv qee qhov CuSO4 (tooj liab sulfate) lossis AgNO3 (silver nitrate) rau hauv dej los npaj cov tshuaj nrog cov concentration ntawm li 20 feem pua. Tom qab ntawd muab cov paj rwb ntub dej nrog cov tshuaj saum toj no rau ntawm cov khoom siv txhuas txhuam polished nrog cov ntawv xuab zeb zoo, lossis ncaj qha rau hauv cov khoom txhuas hauv cov tshuaj. Vim qhov kev hloov pauv ntawm cov tooj liab ions lossis nyiaj ions hauv cov tshuaj thiab txhuas, tom qab li 20 feeb, cov txheej nyias nyias ntawm cov xim hlau lossis cov nyiaj yuav muab tso rau saum npoo ntawm cov txhuas daim. Siv ib daim txhuam cev los nqus cov tshuaj ntawm cov txhuas daim, thiab ci hauv qab lub teeb kom txog thaum lub npoo qhuav tag. Tom qab ua tiav cov haujlwm saum toj no, siv cov tshuaj cawv nrog rosin rau nws, thiab tom qab ntawd nws tuaj yeem ncaj qha welded.
