Dab tsi yog cov kua nplaum liab? Cov kua nplaum liab yog polydilute compound, uas yog txawv los ntawm solder muab tshuaj txhuam nyob rau hauv tias nws soliorifies thaum rhuab. Nws taw tes khov kub yog 150 degree, nyob rau ntawm lub taw nplaum liab pib hloov ncaj qha los ntawm cov tshuaj txhuam zoo li cov khoom noj.
Cov yam ntxwv ntawm cov pos hniav liab: liab pos hniav muaj viscosity, lub hom phiaj, cov yam ntxwv kub, cov chaw ntub dej los ntawm tus PCB thiab tiv thaiv lawv kom tiv thaiv lawv.
Dab tsi yog ham muab tshuaj txhuam? SOLDER muab tshuaj txhuam yog hom khoom siv vuam uas tshwm sim nrog SMT Mounting. Nws yog cov tshuaj txhuam uas sib xyaw kom sib xyaw ua ke los ntawm kev sib xyaw ua ke hmoov, flux, lwm yam surfactants, thiab lwm yam.
SOLDER Muab tshuaj txhuam feem ntau yog siv rau cov soldering hluav taws xob Cheebtsam hluav taws xob xws li cov khoom siv hluav taws xob, capacitors, thiab ICS ntawm PCBs hauv kev lag luam SMT. Nws lub ntsiab tseem ceeb yog lub luag haujlwm ntawm kev coj ua soldering.
Qhov sib txawv ntawm satder muab tshuaj txhuam thiab kua nplaum liab
1. Cov kua nplaum liab muaj cov nyhuv txhim kho thiab tsis ua hluav taws xob, thaum ham muab tshuaj txhuam tseem muaj hluav taws xob kho tau yooj yim
2. Cov kua nplaum liab yuav tsum tau yaig soldering ua ntej vuam yuav nqa tau;
3. Qhov kub ntawm cov kua nplaum liab thaum nthwv dej soldering yog qis dua uas ntawm satder paste thaum lub sij hawm yoj schdering;
4. Cov kua nplaum liab feem ntau siv ua cov khoom siv rau kev kho kom yooj yim, ua cov muab tshuaj tua hluav taws xob tuaj yeem ua hluav taws xob, feem ntau nws siv hluav taws xob hauv vuam.
Cov qauv xaiv rau cov txheej nplaum liab thiab cov ntshiab haoob paste txheej txheem hauv cov txheej txheem SMT
Feem ntau, yog tias tsis muaj cov khoom siv tsoos rau ntawm cov khoom lag luam, cov txheej txheem ham muab (nrog rau ib leeg-ob sab, lossis cov txheej txheem ntau dua) yuav raug siv. Rau ib tug panels nrog ib txwm muaj, cov soldering nto yuav ua rau siv cov txheej txheem liab. Ob chav tsev ob tog nrog ib qho khoom siv ib txwm muaj nyob rau ntawm ib sab, ib qho kev muab tshuaj txhuam cov txheej txheem ntawm lwm sab, thiab cov qauv xim liab ntxiv rau ntawm lwm qhov sib npaug.
Cov txheej txheem liab yuav tsum mus los ntawm ib nthwv dej soldering txheej txheem kom tiav cov vuam ntawm cov chaw thiab PCBs. Cov txheej txheem yog me ntsis ntev dua, uas nce kev ua haujlwm thiab cov nqi tsim khoom. Cov solder muab cov txheej txheem muab tau los ntawm kev sib cav sib ceg, uas tsis tshua muaj zog, txhim kho kev ua lag luam luv luv, txhim kho kev sib tw luv luv.
Qhov sib txawv ntawm satder muab tshuaj txhuam steel ntxaij thiab liab nplaum steel mesh
Firstly, nyob ntawm qhov chaw ntawm kev qhib, tus ham muab tshuaj txhuam steel mesh tuaj yeem qhib ncaj qha rau kev ua kom ncaj qha rau lub pcb ncoo thiab pab txhawb vuam! Thiab cov kua nplaum liab steel mesh yog qhov tshwj xeeb nyob rau hauv tias nws txoj haujlwm yog txhuam cov kua nplaum thiab cov khoom siv muab tshuaj txhuam rau ntawm cov hlua ntawm cov txheej txheem. Yog li, yog tias tus ntxaij hlau yog siv tsis raug, nws tsis tuaj yeem rov ua haujlwm thiab tsuas yog muab pov.
Qhov thib ob, cov ham muab tshuaj txhuam hlau mesh thiab liab adhesive steel ntxaij mesh yog txiav txim siab raws cov cuab yeej sib txawv SMT ua cov txheej txheem sib txawv! Feem ntau, thaum PCBs nyob ntawm tib sab thiab muaj tsawg dua cov khoom siv sib tsoo thiab cov khoom siv liab, kev siv cov xim liab cov roj teeb liab mesh yuav nce ntxiv.
