Lub hauv paus ntsiab lus ntawmPCBA reflow solderingyog ib qho kev siv cov txheej txheem nto mounting rau cov khoom siv hluav taws xob rau cov ntawv luam tawm Circuit Board (PCBs).

Lub hauv paus ntsiab lus ntawm reflow soldering yog raws li cov hauv paus ntsiab lus ntawm thermal conduction thiab melting ntawm cov khoom siv solder.Firstly, solder paste yog siv rau qhov xav tau soldering qhov chaw ntawm PCB.Cov tshuaj txhuam hniav muaj cov hlau alloy, feem ntau muaj cov hlau lead, tin, thiab lwm yam hlau uas tsis tshua muaj melting point.

Tom qab ntawd, cov khoom siv saum npoo av (SMD) raug muab tso rau hauv qhov chaw muab tshuaj txhuam kom raug.Reflow soldering yuav tsum tau ua kom sov thiab txias nyob rau hauv ob theem loj.Heating theem: qhov kub thiab txias maj mam nce, ua rau solder paste pib melting.Cov hlau alloy nyob rau hauv lub solder paste melts thiab tsim ib lub xeev ua kua.

Thaum cov txheej txheem no, qhov kub thiab txias yuav tsum ncav cuag ib theem txaus kom ntseeg tau tias cov pob qij txha tau yaj, tab sis tsis siab dhau los ua rau lwm cov khoom hauv lub qhov cub reflow los yog PCB.Soldering theem: Thaum lub solder muab tshuaj txhuam yog melting, lub solder pob qij txha tsim hluav taws xob. thiab mechanical kev sib txuas ntawm covPCB thiab cov khoom.Thaum cov pob qij txha ncav cuag qhov kub thiab txias, cov pob hlau hauv cov khoom siv hlau pib pib tsim cov pob tin.Cooling theem: qhov kub hauv qhov cub reflow pib poob qis, ua rau cov nplaum nplaum kom txias sai thiab ua kom ruaj khov, tsim cov pob qij txha ruaj khov.
Tom qab cov pob qij txha tau txias lawm, cov nplaum nplaum ua kom ruaj khov thiab ruaj khov txuas PCB thiab cov khoom sib xyaw ua ke.Qhov tseem ceeb ntawm kev rov ua dua tshiab yog los tswj qhov kub thiab txias hauv qhov cub reflow kom ua tiav cov yaj ntawm cov nplaum nplaum, thiab rau cov pob qij txha. tsim txhim khu kev qha thiab ruaj khov kev sib txuas nrog PCB thiab cov khoom.

Tsis tas li ntawd, qhov zoo ntawm cov tshuaj txhuam hniav zoo kuj cuam tshuam qhov zoo ntawm cov khoom siv, yog li xaiv qhov tsim nyog solder paste formulation yog qhov tseem ceeb.