1. Kev ntub dej tsis zoo.
Kev ua tau zoo hauv PCB pads noj tin tsis zoo lossis cov khoom siv pins noj tin phem.
Ua rau: tivthaiv pins / PCB pads tau oxidation / muaj kuab paug.
tsawg heev reflow soldering kub.
tsis zoo ntawm solder muab tshuaj txhuam, yuav ua rau tsis zoo wettability, yuav muaj qhov tseeb cuav solder.
2. Tus nqi ntawm cov tin yog tsawg heev.
Kev ua tau zoo tsis yog tag nrho ntawm cov pob qij txha, IC tus pin hauv paus ntawm lub hli khoov nto yog me me.
Ua rau: luam ntawv template qhov rais me me.
wick phenomenon (tsis zoo kub profile); cov ntsiab lus tsis tshua muaj hlau ntawm solder paste. Ib qho ntawm cov laj thawj saum toj no yuav ua rau me me ntawm cov tin, lub zog ntawm kev sib koom ua ke tsis txaus.
3. Pin kev puas tsuaj.
Kev ua tau zoo hauv cov cuab yeej tus pin coplanarity tsis zoo lossis khoov, cuam tshuam ncaj qha rau qhov zoo ntawm vuam.
Ua rau: thauj / khaws thiab muab tso rau thaum kov tsis zoo, yuav tsum tau ceev faj khaws cov khoom, tshwj xeeb tshaj yog FQFP.
4. Cov pa phem npog cov ntaub qhwv.
Muaj tshwm sim los ntawm lub sij hawm mus rau lub sij hawm nyob rau hauv ntau lawm.
Ua rau: los ntawm daim teb; los ntawm txawv teb chaws lub cev ntawm daim kab xev; phau ntawv kov PCB ncoo lossis cov khoom siv; tus cwj pwm daim ntawv qhia txoj hauj lwm tsis yog lawm. Kev tsim khoom yuav tsum tau them sai sai rau kev huv ntawm qhov chaw tsim khoom, cov txheej txheem yuav tsum tau ua raws li tus qauv.
5. Tsis txaus ntawm cov tshuaj txhuam hniav.
Nws kuj yog ib qho tshwm sim tsis tu ncua hauv kev tsim khoom.
Ua rau: thawj PCB luam ntawv / tshuab nres tom qab luam ntawv; luam ntawv txheej txheem tsis hloov; steel phaj qhov rais thaiv; solder paste zoo deterioration.
6. Solder paste yog angular.
Ntau lawm feem ntau tshwm sim thiab tsis yooj yim mus nrhiav, loj yuav txawm solder.
Ua rau: tshuab luam ntawv lifting ceev ceev heev; template qhov phab ntsa tsis du, yooj yim los ua tus solder paste yog yuan Bao zoo li.
1. Ua-nyob rau hauv vuam fume filtration system, zoo filtration ntawm teeb meem gases, zoo nkauj tsos thiab ib puag ncig tiv thaiv, ntau nyob rau hauv txoj kab nrog kev siv high-end ib puag ncig.
2. Cov khoom siv hluav taws xob tshwj xeeb tsim, nrog kev tswj xyuas qhov kub thiab txias, tsis sib xws ntawm qhov kub thiab txias hauv cheeb tsam thermal them nyiaj, kev ua haujlwm siab ntawm thermal them nyiaj, kev siv hluav taws xob tsawg thiab lwm yam ntxwv.
3. Kev siv cov khoom siv hluav taws xob zoo tshaj plaws aluminium alloy cua sov phaj hloov cov cua sov raj, ob qho tib si txuag hluav taws xob thiab txuag hluav taws xob, piv nrog cov reflow qhov cub zoo sib xws hauv kev ua lag luam, qhov sib txawv ntawm qhov kub ntawm sab nraud yog txo qis.
4. Kev txawj ntse, kev koom ua ke nrog PID tswj algorithm ntawm kev cai-tsim ntse tswj system, siv tau yooj yim, muaj zog.
5. Kev cai-tsim khiav tsav lub cev muaj zog raws li cov yam ntxwv ntawm B-hom mesh siv, kom ntseeg tau tias tsis sib xws ceev thiab lub neej ntev.
