Txias-Thermal Shock Test ntawm PCB

Kev ntsuas kub-kub cua sov yog simulate ntau yam kev hloov pauv kub uas tau ntsib los ntawm lub rooj tsav xwm luam tawm hauv qhov kev siv tiag tiag los ntawm kev hloov pauv txias thiab kub hauv qhov kub thiab txias los ntsuas qhov kub thiab txias ntawm lub rooj tsavxwm. Qhov kev sim no tuaj yeem kuaj xyuas seb lub rooj tsav xwm luam tawm puas yuav fuse, qhib Circuit Court, desoldering thiab lwm yam teeb meem nyob rau hauv cov txheej txheem ntawm thermal expansion, thiaj li soj ntsuam qhov kev ntseeg siab ntawm cov luam ntawv Circuit Court board.

Txoj Cai

Lub expansion coefficient ntawm cov ntawv luam tawm Circuit Board sib txawv nyob rau hauv qhov kub thiab txias ib puag ncig, uas tuaj yeem ua rau xoob lossis tawg ntawm cov ntawv luam tawm Circuit Board, uas ua rau kev sib txuas tsis zoo. Kev kuaj mob khaub thuas thiab kub kub yog rov hloov pauv pcb ntawm qhov kub thiab txias tsis tshua muaj los simulate cov xwm txheej huab cua hauv qhov chaw tiag tiag thiab sim seb nws puas tuaj yeem ua haujlwm li qub.

Cov kev xav tau ntawm kev ua haujlwm

Kev ua haujlwm ntawm kev ntsuas txias thiab thermal shock muaj qee yam yuav tsum tau ua. Ua ntej, nws yog ib qho tsim nyog los tswj qhov kub thiab txias ntawm qhov kev sim, thiab ua ntau qhov kev hloov pauv txias thiab kub hauv qhov kub thiab txias. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau qhov xwm txheej ntawm lub rooj tsav xwm luam tawm. Yog tias ua tau, auxiliary reagents rau kev sim oxidation nrawm tuaj yeem ntxiv. Raws li cov txiaj ntsig kev sim, qhov zoo ntawm pcb tuaj yeem ntsuas thiab ua kom zoo.

Daim duab: Lub tshuab txias-thermal

Qhov kev sim no feem ntau muab faib ua ob kauj ruam, uas yog qhov ntsuas kub qis thiab qhov kub siab poob siab. Nyob rau hauv qhov kub tsis tshua muaj kev cuam tshuam cov kauj ruam, cov ntawv luam tawm Circuit Board tau muab tso rau hauv ib puag ncig uas tsis tshua muaj kub thiab kub ceev kom kub nyob rau hauv ob peb feeb los simulate thermal expansion tshwm sim los ntawm huab cua hloov pauv thiab kub hloov ceev. Nyob rau hauv lub siab-kub poob siab kauj ruam, lub Circuit Court board yog muab tso rau hauv ib tug high-kub ib puag ncig thiab sai txias mus rau ib tug tsawg kub nyob rau hauv ob peb feeb los simulate thermal expansion thiab contraction ntawm qhov kub thiab txias thiab ntsuam xyuas qhov tsis kam ntawm cov luam Circuit Court board.

Nws yog ib qho tsim nyog sau cia tias qhov ntsuas txias thiab thermal shock tsis tag nrho sawv cev ntawm kev siv PCB hauv ib puag ncig. Vim hais tias nyob rau hauv kev siv tswv yim, Circuit Court boards kuj yuav ntsib lwm yam ntaub ntawv ntawm lub cev, tshuaj, thiab lom ib puag ncig yam. Yog li ntawd, thaum ntsuas qhov kev ntseeg siab ntawm Circuit Court boards, nws yog ib qho tsim nyog yuav tsum tau sib sau ua ke ntau yam kev sim thiab ua kom tiav kev txiav txim siab raws li kev siv tiag tiag.

Qhov ntsuas kub-kub cua sov muaj qhov cuam tshuam loj rau qhov zoo ntawm PCB. Ua ntej, qhov kev sim no tuaj yeem pab ntsuas kev ruaj ntseg thiab zoo ntawm lub rooj tsav xwm luam tawm, txhawm rau kom ntseeg tau tias nws tuaj yeem ua haujlwm nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias, thiab txhim kho nws lub peev xwm los tiv thaiv kev laus thiab kev hloov ib puag ncig. Qhov thib ob, qhov kev sim kuj tuaj yeem tshawb pom seb puas muaj qhov hloov pauv ntawm lub cev xws li tawg ntawm pcb los ntawm kev hloov pauv kub, kom tsis txhob muaj cov khoom lag luam tsis ua haujlwm thiab cov teeb meem zoo tshwm sim vim li no. Thaum kawg, qhov kev sim tuaj yeem txhim kho kev nkag siab ntawm thermal expansion kev ua haujlwm ntawm PCB, thiab muab cov lus qhia thiab kev ua kom zoo rau cov khoom tsim thiab kev tsim khoom.