Txoj Kev Siv Hluav Taws Xob Soldering Hlau

Soldering txoj kev ntawm hluav taws xob soldering hlau
2.1 Soldering txoj kev ntawm in-line pin hom Cheebtsam
Lub taub hau ntawm cov hlau nplaum yuav tsum nyob rau hauv kev sib cuag nrog ob qhov sib txuas sib txuas kom tau welded (xws li cov ko taw thiab cov ntaub qhwv) tib lub sijhawm. Cov hlau soldering feem ntau inclined ntawm 30-45 degrees. Tsis txhob sib cuag nrog tsuas yog ib qho ntawm cov welded qhov chaw thaum lub rhuab cheeb tsam ntawm ob welded Cheebtsam txawv heev. Lub kaum sab xis ntawm inclination ntawm cov hlau soldering yuav tsum tau kho kom haum. Txo qhov inclination lub kaum sab xis ntawm cov hlau soldering thiab cov khoom siv soldered nrog thaj chaw vuam loj, ua rau thaj chaw sib txuas ntawm cov khoom siv soldered nrog thaj tsam loj thiab cov hlau soldering, thiab txhim kho cov thermal conductivity. , lub cev muaj zog, horn thiab lwm yam inclination ces kaum yuav nyob ib ncig ntawm 40 degrees. Ob qhov chaw yuav tsum tau welded tuaj yeem ncav cuag qhov kub thiab txias tib lub sijhawm. suav tias yog lub xeev zoo tshaj plaws ntawm cov cua sov.
2.2 Vuam txoj kev ntawm chip Cheebtsam
Ua ntej soldering, siv flux rau ntawm lub ncoo thiab tuav nws nrog ib tug soldering hlau kom tsis txhob tinning tsis zoo los yog oxidation ntawm lub ncoo. Ua rau vuam tsis zoo. Chips feem ntau tsis tas yuav ua tiav. Ua tib zoo tso QFP nti rau ntawm PCB nrog tweezers, saib xyuas kom tsis txhob ua kom cov pins puas. Teem nws nrog lub ncoo. Xyuas kom tseeb tias cov nti tau muab tso rau hauv qhov kev taw qhia kom raug. Kho qhov kub ntawm cov hlau soldering rau ntau tshaj 300 degrees Celsius. Muab ib qho me me ntawm solder rau ntawm qhov kawg ntawm cov hlau soldering, thiab nias rau ntawm daim ntawv sib dhos nrog lub cuab yeej. Siv ib tug me me ntawm solder rau ob diagonally positioned pins, tseem nias rau ntawm lub nti. Solder cov pins ntawm ob kab pheeb ces kaum kom lub nti ruaj khov thiab tsis tuaj yeem txav mus los. Tom qab soldering cov ces kaum sab nraud, rov kuaj xyuas seb txoj hauj lwm ntawm cov nti puas raug. Kho lossis tshem tawm thiab rov kho dua ntawm PCB yog tias tsim nyog. Thaum pib solder tag nrho cov pins. Solder yuav tsum tau ntxiv rau qhov kawg ntawm cov hlau soldering. Siv cov solder rau tag nrho cov pins kom cov pins ntub. Kov qhov kawg ntawm txhua tus pin ntawm cov nti nrog lub ntsis ntawm cov hlau soldering kom txog thaum koj pom cov hlau ntws mus rau hauv cov pins. Thaum soldering, tuav lub taub hau ntawm cov hlau sib txuas mus rau cov pins raug soldered kom tsis txhob muaj ntau tshaj soldering ceg. Tom qab tag nrho cov pins yog soldered, ntub tag nrho cov pins nrog flux los ntxuav lub solder Blot tawm lub solder tshaj qhov uas yuav tsum tau tshem tawm tej yam ua tau luv luv thiab laps Thaum kawg xyuas nrog tweezers rau qaug zog soldering, tom qab kev soj ntsuam tiav, tshem tawm flux los ntawm lub rooj tsavxwm. . Muab cov txhuam txhuam tawv tawv hauv dej cawv thiab so kom zoo zoo raws li kev taw qhia ntawm tus pin kom txog thaum flux
mus txog thaum nws ploj lawm.
2-3 Vuam txoj kev ntawm SMD RC Cheebtsam
Dot tin rau ntawm ib qho kev sib koom ua ntej. Tom qab ntawd muab ib qho kawg ntawm cov khoom xyaw. clip nrog tweezers
Tuav lub tivthaiv, tom qab soldering ib kawg, xyuas seb nws puas raug tso cai; Yog hais tias nws tau muab tso rau kom raug, ces solder rau lwm kawg. Yog tias cov pins nyias nyias, koj tuaj yeem ntxiv cov tin rau cov nti pins hauv kauj ruam 2, thiab tom qab ntawd siv cov tweezers Clamp cov tub ntxhais, coj mus rhaub maj mam rau ntawm ntug ntawm lub rooj kom tshem tawm ntau dhau. Qhov thib peb kauj ruam yog solder ncaj qha nrog ib tug soldering hlau tsis tinning lub soldering hlau.
Vuam lub sij hawm thiab qhov kub thiab txias: qhov kub thiab txias yog txiav txim siab los ntawm kev siv tiag tiag. Nws yog qhov tsim nyog rau solder lub tin taw tes rau 1-4 vib nas this, thiab qhov siab tshaj plaws yog tsis ntau tshaj 8 vib nas this. Feem ntau saib xyuas qhov ntxeev ntawm cov hlau soldering, thaum nws hloov ntshav, qhov kub thiab txias yog siab dhau. General in-line electronic khoom. Teem qhov ntsuas kub ntawm cov hlau taub hau rau (350-370 degrees); rau saum npoo mount cov ntaub ntawv (SMT), teem qhov tseeb kub ntawm lub soldering hlau taub rau (330-350 degrees), feem ntau lub melting point ntawm lub solder ntxiv rau 100 degrees. Thaum soldering loj tiv thaiv taw, qhov kub yuav tsum tsis txhob siab tshaj 380 degrees, tab sis koj tuaj yeem ua kom lub zog ntawm cov hlau soldering.
Vuam ceev faj: Ua ntej welding, saib seb txhua qhov sib koom ua ke (tooj liab ntawm daim tawv nqaij) yog du, oxidized, thiab lwm yam. Yog tias muaj sundries, ntxuav lawv nrog txhuam ua ntej vuam. Yog tias muaj oxidation, ntxiv qhov tsim nyog ntawm flux los ua kom lub vuam lub zog. Thaum vuam cov khoom, nco ntsoov pom qhov vuam taw tes. Txhawm rau kom tsis txhob luv luv Circuit Court tshwm sim los ntawm kev vuam tsis zoo ntawm cov kab. Yog hais tias cov khoom yuav tsum tau soldered yog tsis kub-resistant tej pob khoom xws li yas casings. Soldering tuaj yeem ua tiav tom qab txheej dej cawv ntawm lub cev tiv thaiv kom tsis txhob muaj cua sov. Tom qab vuam, ua tib zoo xyuas cov txheej txheem vuam ntawm cov khoom, seb puas muaj cov tin seem, tin hlaws, thiab tin slag nyob rau hauv ib puag ncig cov pob qij txha.