Soldering hlau - nyob rau hauv-kab tus pin hom tivthaiv vuam txoj kev
1 Hom kev sib cuag ntawm lub taub hau hlau thiab ob qhov chaw yuav tsum tau welded. Txoj hauj lwm sib cuag: Lub taub hau ntawm cov hlau soldering yuav tsum kov 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, thiab yuav tsum tsis txhob sib cuag nrog tsuas yog ib qho ntawm cov khoom yuav tsum tau welded. Thaum lub tshav kub ntawm ob lub Cheebtsam yuav tsum tau welded yog sib txawv heev, lub inclination lub kaum sab xis ntawm lub soldering hlau yuav tsum tau kho kom tsim nyog kom txo tau lub inclination lub kaum sab xis ntawm lub soldering hlau thiab cov khoom yuav tsum tau welded nrog ib tug loj welding cheeb tsam, thiab kom nce. qhov chaw sib cuag ntawm lub welded ib feem nrog ib tug loj welding cheeb tsam thiab soldering hlau, txhim khu kev qha thermal conductivity. Piv txwv li, lub inclination lub kaum sab xis ntawm LCD rub vuam yog hais txog 30 degrees, thiab lub inclination lub kaum sab xis ntawm vuam microphones, motors, hais lus, thiab lwm yam yuav yog hais txog 40 degrees. Ob qhov chaw yuav tsum tau welded tuaj yeem ncav cuag qhov kub thiab txias tib lub sijhawm, uas yog suav tias yog ntxiv rau
Kub zoo tagnrho xeev.
Kev sib cuag siab: Thaum lub taub hau hlau yog nyob rau hauv kev sib cuag nrog lub vuam, yuav tsum tau siv lub siab me ntsis. Lub zog ntawm tshav kub conduction yog proportional rau lub siab thov, tab sis lub hauv paus ntsiab lus yog hais tias nws tsis ua kev puas tsuaj rau saum npoo ntawm weldment.
2 Yuav ua li cas muab solder hlau. Cov khoom siv ntawm cov hlau nplaum yuav tsum tau ua tiav peb txoj hauv kev, uas yog lub sijhawm muab khoom, qhov chaw thiab qhov ntau.
Lub sij hawm muab khoom: Raws li txoj cai, cov hlau xaim xaim tam sim ntawd thaum qhov kub ntawm qhov vuam mus txog qhov kub ntawm cov khoom siv.
Qhov chaw muab khoom: Nws yuav tsum nyob nruab nrab ntawm cov hlau soldering thiab cov welded ib feem thiab ze rau ntawm lub ncoo li sai tau.
Kev muab khoom ntau: Nws nyob ntawm qhov loj ntawm qhov vuam thiab lub ncoo. Tom qab lub solder npog lub ncoo, lub solder tuaj yeem siab dua 1/3 ntawm txoj kab uas hla ntawm lub ncoo, thiab cov sib koom ua ke yuav tsum yog conical.
3 Vuam lub sij hawm thiab qhov kub thiab txias.
3.1 Qhov ntsuas kub yog txiav txim siab los ntawm kev siv tiag tiag. Nws yog qhov tsim nyog tshaj rau solder point rau 1-4 vib nas this, thiab qhov siab tshaj plaws yog tsis ntau tshaj 8 vib nas this. Feem ntau saib qhov ntxeev ntawm cov hlau soldering. Thaum nws hloov ntshav, qhov kub thiab txias yog siab dhau.
3.2 Feem ntau, rau cov khoom siv hluav taws xob hauv-kab, teeb tsa qhov ntsuas kub ntawm cov hlau taub hau rau (350 ~ 370 degrees); rau saum npoo mount cov ntaub ntawv (SMT), teem lub sij hawm kub ntawm lub soldering hlau taub rau
(33o ~ 350 degrees), feem ntau lub melting point ntawm solder ntxiv rau 100 degrees.
3.3 Rau cov ntaub ntawv tshwj xeeb, qhov kub ntawm cov hlau soldering yuav tsum tau teem tshwj xeeb. LCD connectors, thiab lwm yam yuav tsum tau siv nyiaj-muaj tin hlau, thiab qhov kub yog feem ntau ntawm 290 thiab 310 degrees.
3.4 Thaum soldering loj tiv thaiv taw, qhov kub yuav tsum tsis txhob siab tshaj 380 degrees, tab sis lub zog ntawm cov hlau soldering yuav nce.
4 Kev ceev faj rau vuam.
4.1 Ua ntej vuam, saib seb txhua qhov sib koom ua ke (tooj liab ntawm daim tawv nqaij) yog du thiab oxidized. Yog hais tias muaj sundries, siv txhuam los ntxuav lawv ua ntej vuam. Yog tias muaj oxidation, ntxiv qhov tsim nyog ntawm flux los ua kom lub zog vuam.
4.2 Thaum vuam cov khoom, saib qhov vuam taw tes kom tsis txhob luv luv los ntawm kev vuam tsis zoo ntawm cov kab.
4.3 Yog hais tias cov khoom yuav tsum tau welded yog ib lub pob uas tsis yog-kub-resistant xws li cov ntaub ntawv yas, koj muaj peev xwm siv kiag li cawv rau lub cev tivthaiv ua ntej welding los tiv thaiv tshav kub puas.
4.4 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.
