Yuav ua li cas txo lossis tshem tawm deformation los ntawm cov khoom sib txawv los yog kev ua haujlwm tau dhau los ua ib qho teeb meem nyuaj tshaj plaws uas tau ntsibPCB manufacturershauv PCB board sampling. Cov hauv qab no yog qee qhov laj thawj deformation:
1. Qhov hnyav ntawm lub rooj tsav xwm Circuit Court nws tus kheej tuaj yeem ua rau dents thiab deformation ntawm lub rooj tsavxwm
Feem ntau, lub tshuab hluav taws xob reflow siv cov saw hlau los tsav lub rooj tsav xwm hauv Circuit Court rau pem hauv ntej hauv qhov cub reflow. Yog tias muaj qhov hnyav dhau ntawm lub rooj tsavxwm lossis qhov loj ntawm lub rooj tsavxwm loj heev, nws yuav pom qhov tshwm sim ntawm qhov sib txuam hauv nruab nrab vim nws qhov hnyav, ua rau khoov ntawm lub rooj tsavxwm.
2. Qhov tob ntawm V-Cut thiab cov hlua txuas txuas yuav cuam tshuam rau qhov deformation ntawm lub vaj huam sib luag
V-Cut yog cov txheej txheem ntawm kev txiav grooves ntawm ib daim ntawv loj ntawm cov khoom, yog li thaj chaw uas V-Cut tshwm sim yog qhov ua rau deformation.
3. Deformation tshwm sim thaum lub sij hawm PCB board ua
Lub deformation ua rau PCB pawg thawj coj ua yog qhov nyuaj heev, uas tuaj yeem muab faib ua ob hom kev ntxhov siab: thermal stress thiab mechanical stress. Kev ntxhov siab thermal feem ntau yog tsim los ntawm cov txheej txheem nias, thaum cov neeg kho tshuab kev ntxhov siab feem ntau yog tsim thaum lub sij hawm stacking, tuav, thiab ci txheej txheem ntawm daim hlau. Cia wb tham luv luv hauv qhov kev txiav txim ntawm tus txheej txheem.
Copper clad phaj cov khoom tuaj: Qhov loj ntawm tooj liab clad phaj xovxwm yog qhov loj, thiab muaj qhov sib txawv ntawm qhov kub thiab txias ntawm qhov sib txawv ntawm cov phaj kub, uas tuaj yeem ua rau muaj qhov sib txawv me ntsis ntawm cov resin curing ceev thiab degree hauv ntau qhov chaw thaum lub sij hawm nias. . Kev ntxhov siab hauv zos kuj tuaj yeem tsim, uas maj mam tso tawm thiab deforms hauv kev ua haujlwm yav tom ntej.
Nias: Cov txheej txheem PCB nias yog cov txheej txheem tseem ceeb uas ua rau muaj kev ntxhov siab thermal, uas tau tso tawm thaum lub sij hawm tom qab drilling, shaping, los yog grilling txheej txheem, uas ua rau deformation ntawm lub rooj tsavxwm.
Cov txheej txheem ci rau daim npog ntsej muag thiab cov cim: Vim qhov tsis muaj peev xwm ntawm lub ntsej muag lub ntsej muag kom sib koom ua ke thaum lub sijhawm sib zog, PCB cov laug cam yuav muab tso rau hauv cov khib nyiab rau ci thiab kho, thiab lub rooj tsavxwm yog qhov yooj yim deformation hauv nws tus kheej qhov hnyav lossis muaj zog. cua hauv qhov cub.
Cua kub solder leveling: tag nrho cov cua kub solder leveling txheej txheem yog ib tug sai sai cua sov thiab txias txheej txheem, uas inevitably ua rau thermal stress, uas ua rau micro strain thiab tag nrho deformation thiab warping cheeb tsam.
Cia: PCB boards feem ntau khov kho rau hauv rhawv thaum lub sij hawm ib nrab tiav ntawm kev cia. Kev hloov tsis raug ntawm txee nruj los yog stacking thaum lub sij hawm cia yuav ua rau txhua yam deformation ntawm cov laug cam.
Ntxiv nrog rau cov xwm txheej saum toj no, muaj ntau lwm yam cuam tshuam rau kev deformation ntawm PCB boards.