Taw qhia
Hauv PCBA kev tsim khoom ib puag ncig, feem ntau cov tuam txhab tsom lawv cov kev siv zog ntawm qhov tseeb ntawmxaiv thiab qhov chaw tshuab, kub aav ntawmreflow qhov cub, thiabSMTAOItshuabalgorithms. Thaum ntsib batch solder joint defects, tombstoning, los yog solder pob teeb meem, ntau factories instinctively kho qhov cub kub profile, feem ntau overlooking tus pas ntsuas kub thiab hygrometer dai ntawm phab ntsa. Nyob rau hauv qhov tseeb, hloov maj mam hloov nyob rau hauv rhiav tej yam kev mob yog lub zais culprits qab PCBA soldering tsis ua hauj lwm.
Humidity Control Failure: Degradation ntawm cov ntaub ntawv thiab Solder Paste Performance
Cov av noo yog qhov sib txawv tshaj plaws uas cuam tshuam rau PCBA kev ua haujlwm zoo. Thaum txheeb ze av noo ntau tshaj 60% RH, PCB pads thiab cov khoom ua kom nrawm nrawm ntawm huab cua, ua rau lub microscopic oxidation.
Cov av noo ntau dhau ua rau muaj kev cuam tshuam loj heev rau solder paste. Lub flux nyob rau hauv solder paste qhia muaj zog hygroscopic zog. Thaum nws nqus dej ntau dhau, qhov vaporization sai ntawm cov dej thaum lub sij hawm siab -kub reflow soldering theem ua rau splattering, tsim ntau random solder npas. Qhov tseem ceeb tshaj, noo noo dilutes lub active Cheebtsam ntawm cov flux, tiv thaiv kom txhob oxidation zoo thaum lub sij hawm soldering thiab ncaj qha ua rau txias solder pob qij txha los yog solder voids. Hloov pauv, cov av noo qis dua 30% RH txhawb kev tsim hluav taws xob zoo li qub hauv kev cob qhia, hem cov chips rhiab heev thaum ua kom cov kuab tshuaj evaporation hauv cov tshuaj txhuam. Qhov no cuam tshuam viscosity, ua rau muaj teeb meem luam ntawv xws li beading lossis hla.
Qhov kub thiab txias hloov pauv: Cov saw hlau tiv thaiv ntawm viscosity thiab Rheology
PCBA cov chaw tsim khoom feem ntau tuav cov txheej txheem ua haujlwm kub ntawm 22℃thiab 26 degree. Qhov no tsis yog rau kev nplij siab ntawm cov neeg ua haujlwm nkaus xwb tab sis yog raws li kev xav ntawm cov dej dynamics.
Solder paste yog thermosensitive, tsis yog -Newtonian kua. Thaum lub rooj cob qhia kub nce, solder paste viscosity txo qis. Thaum lub sij hawm luam ntawv, tsis tshua muaj viscosity ua rau solder paste kom vau tom qab tso tawm stencil, ua rau bridging thiab luv circuits ntawm cov ntaub ntawv uas nyob ib sab. Piv txwv li, qhov kub tsis tshua muaj siab ua rau cov khoom siv tshuaj pleev xim txawv txav, tiv thaiv kom tsis txhob txhaws ntawm stencil apertures thiab ua rau muaj kev cuam tshuam los yog tsis raug. Tsis tas li ntawd, qhov tsis ruaj tsis khov ambient kub tuaj yeem ua rau hloov pauv hauv thaj chaw preheat qhov ntsuas kub hauv qhov cub reflow. Qhov no ua rau qhov qub qhov cub kub qhov profile tsis muaj nuj nqis raws li kev siv, ua kom brittleness ntawm cov khoom siv sib txuas.
Cov dej noo- Cov khoom siv tau yooj yim
Tswj cov dej noo- cov khoom rhiab heev yog qhov tseem ceeb hauv kev sib sau ua ke siab -PCBA kev ua haujlwm rau kev kho mob lossis kev siv tsheb. Yog tias kev tswj cov av noo tsis ua haujlwm, cov hlau lead hauv cov pob IC tuaj yeem nqus tau cov dej noo. Nyob rau hauv qhov siab - qhov kub thiab txias ntawm reflow soldering saum 240℃, qhov no ya raws sai sai expands, generating siab txaus los nqa lub pob casing thiab ua rau micro- tawg los yog sab hauv delamination. Xws li kev puas tsuaj feem ntau yog zais, zoo li qub thaum lub Hoobkas kuaj. Txawm li cas los xij, tom qab lub hlis ntawm kev ua haujlwm, dej vapor corrosion lossis kev ntxhov siab tuaj yeem ua rau ua tiav cov cuab yeej tsis ua haujlwm.
Dynamic Monitoring: Tsim ib lub Foundation rau Kev Tiv Thaiv Ib puag ncig
Cov chaw tsim khoom lag luam muaj kev vam meej tsis yog nyob ntawm phau ntawv ntsuas kub / av noo tab sis nyob ntawm sensor-raws li kev soj ntsuam cov tshuab ua haujlwm 24/7. Peb xa ntau cov ntaub ntawv sau cov ntsiab lus raws cov kab ntau lawm, xa cov ntaub ntawv tiag - lub sijhawm mus rau MES system. Yuav tsum ntsuas kub lossis av noo sib txawv ntawm qhov chaw pib ua ntej, lub kaw lus cia li ceeb toom rau pawg txheej txheem thiab tej zaum yuav ua rau muaj kev cuam tshuam los ntawm lub hauv paus cua txias system. Rau PCBs thiab noo noo- cov khoom rhiab heev, hluav taws xob ya raws- cov ntaub ntawv pov thawj yuav tsum tau teeb tsa, thiab kev ua raws cai nruj heev rau kev tshaj tawm -unpacking Rhiav lifespan taug qab yog yuav tsum tau. Tsuas yog los ntawm kev hloov ib puag ncig ib puag ncig rau hauv cov txheej txheem uas muaj peev xwm ua tau peb tuaj yeem ua kom txhua tus PCBA tau sib sau ua ke raws li lub cev zoo ib yam.
Lub hauv paus ua rau ntawm soldering tsis xws luag feem ntau yog tsis nyob rau hauv cov khoom tsis ua hauj lwm, tab sis nyob rau hauv overlooked atmospheric tej yam kev mob. Yog tias koj tab tom muaj kev hloov pauv loj hauv cov khoom lag luam tawm los, nquag tsis tau piav qhia txog kev sib koom ua ke tsis ua haujlwm, lossis kev tshaj tawm siab - kev muag khoom kho tus nqi, qhov no yuav qhia tau tias muaj qhov tsis zoo hauv koj lub rooj cob qhia ib puag ncig.
Cov ntaub ntawv ceevhais txog NeoDen
1) Tsim los ntawm 2010, 200 + cov neeg ua haujlwm, 27000+ Sq.m. Hoobkas.
2) NeoDen Cov Khoom: Ntau Series PnP tshuab, NeoDen YY1, NeoDen4, NeoDen5, NeoDen K1830, NeoDen9, NeoDen N10P. Reflow Cub IN Series, nrog rau ua tiav SMT Kab suav nrog txhua yam khoom siv SMT tsim nyog.
3) Ua tiav 10000+ cov neeg siv khoom thoob plaws ntiaj teb.
4) 40+ Cov Neeg Sawv Cev Thoob Ntiaj Teb muaj nyob hauv Asia, Europe, America, Oceania thiab Africa.
5) R&D Center: 3 R&D departments nrog 25+ kws R&D engineers.
6) Sau nrog CE thiab tau txais 70+ patents.
7) 30+ kev tswj xyuas zoo thiab kev txhawb nqa engineers, 15+ kev muag khoom loj thoob ntiaj teb, rau cov neeg siv khoom teb raws sijhawm hauv 8 teev, thiab cov kev daws teeb meem kev tshaj lij hauv 24 teev.