Zomwe Zimayambitsa Zokwawa ndi Mayankho a PTFE High-Temperature Tepi

Monga katswiri wopanga nsalu za PTFE zotentha kwambiri, Jiangsu Aokai New Materials amagawana ntchito zamaluso. Insights.In PCB otentha mpweya solder mlingo, golide plating ndi kumiza golide njira, solder zokwawa pa shielding m'mphepete mwa PTFE mkulu-kutentha tepi makamaka chifukwa ophatikizana kulephera thupi la tepi ndi kwambiri ndondomeko mapangidwe.

I. Zomwe Zimayambitsa Kukwawa kwa Solder

M'mphepete warping wa PTFE mkulu-kutentha tepi kupanga mipata Pa mkulu-kutentha kupanga, ndi zomatira mphamvu ya tepi amachepetsa pamene kutentha limatuluka. Pamene kumatirira sikukwanira kukana kupsinjika kwamafuta, m'mphepete mwa tepiyo amapindika pang'ono ndikupanga mipata ya capillary, kulola kuti solder yamadzimadzi ilowe mkati.

Zotsatira zoyipa komanso kuchuluka kwa madamu a solder Solder amakonda kukwawira kumadera otentha kwambiri. Pamene malo otetezedwa ali pa kutentha kwakukulu, solder yamadzimadzi imakwera pamwamba pa mipata ya tepi mu wicking wamba. effect.In Komanso, kwambiri wandiweyani PTFE tepi kupanga masitepe m'mbali, kuchititsa solder kudzikundikira kupanga solder damu, amenenso aggravates solder zokwawa.

Zosagwirizana zakuthupi za PTFE tepi yotentha kwambiri Zomata za tepi yotsika ya PTFE sachedwa kuyenda, kuwonongeka ndi zotsalira zomatira pa kutentha kwambiri. Sikuti amangowononga chotchinga chotchinga, komanso amawononga mapepala, kuonjezera kwambiri chiopsezo cha solder zokwawa.

Zoipitsa zodutsa tepi ya PTFE Ngakhale tepiyo ili bwino, kuphulika ndi kuwaza mikanda yotsatsira yotsalira mu PCB vias, kapena tinthu tating'onoting'ono tomwe timapanga timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timapangidwira.

Zolakwika lamination ndi ndondomeko kusinthasintha Kulephera kuyeretsa kutchinga pamwamba kapena osakwanira kukanikiza pa tepi ntchito adzasiya mipata kwa solder malowedwe.Kuchuluka mofulumira kutentha kukwera pa reflow soldering chakuthwa kumawonjezera solder fluidity, kukhala kosavuta kudutsa malire a PTFE tepi.

Kunyowa kwakukulu kwa malo opaka golide omwe akukulitsa vuto lokutidwa ndi golide komanso kumizidwa kwa golide kumakhala ndi kunyowa kwabwino kwambiri. Kamodzi solder kukhudza pamwamba golide, imafalikira mofulumira m'mbali tepi, chifukwa mu lalikulu kwambiri zokwawa osiyanasiyana kuposa OSP ndi wamba otentha mpweya solder kusanja process.Defects monga golide wosanjikiza pinholes ndi faifi tambala dzimbiri zidzachititsa m'dera wettability ndi zina kuipa kwambiri m'mphepete solder zokwawa.

II. Mayankho: Dongosolo Lamapulogalamu Mwadongosolo la Tepi Yapamwamba ya PTFE

Sankhani mankhwala oyenerera ndi standardize lamination ntchito Kutengera apamwamba PTFE mkulu-kutentha tepi mwapadera kwa PCB njira kutentha, ndi kukana kutentha 250 ~ 260 ℃ kukumana ndi kutsogolera-free kupanga requirements.Clean ndi chishango pamwamba bwino ndi isopropanol pamaso ntchito kuonetsetsa koyenera popanda m'mphepete warping kapena mipata. Valani magolovesi mukamagwira ntchito kuti mupewe kuipitsidwa ndi mafuta.

Pewani kuwombana kwa mikanda ya solder kuti isathyole ndi chishango Gwiritsani ntchito fomula yothira pang'onopang'ono ndikuwonjezera kutentha kwa reflow. Kutenthetsa kokwanira kumapewa kusungunuka kwamphamvu kwa zosungunulira komanso kumachepetsa chiopsezo cha timikanda tating'onoting'ono tomwe timalowa muchitetezo cha tepi.

Limbikitsani kasamalidwe ka makina osindikizira ndi kutsuka zipangizo Sambani stencil mukasindikiza ma PCB 2-3, ndipo tsatirani njira yopukuta + vacuum cleanping kuti mupewe phala la solder splash pa tepi area.

Okhwima ukubwera ndi ndondomeko kulamulira khalidwe kupanga zofooka zakuthupi Amafuna ogulitsa PCB kupereka oyenerera pulagi khalidwe ziphaso kuonetsetsa mokwanira wodzazidwa vias ndi kupewa zobisika solder mikanda kuzilambalala tepi shielding.Konzani mwachisawawa solderability anayendera matabwa golide-yokutidwa. Mavuto ngati golide wocheperako komanso dzimbiri la faifi tapezeka, letsani zinthu zosalongosoka kuti mupewe zokwawa zowopsa zomwe zimayambitsidwa ndi kufalikira kwachilendo kwa solder.

Gwiritsani ntchito njira zina zochepetsera kudalira matepi Ngati kapangidwe kazinthu kakuloleza, gwiritsani ntchito njira zina zosankhira, monga plating ya golide m'mapadi ndi kukonza zala zagolide pambuyo pake. Izi zimathetsa kufunika kotchinga m'mphepete ndi tepi ya PTFE ndikuthetsa vuto la zokwawa za solder.

Kusankha koyenera, kuyika kokhazikika komanso kuwongolera kogwirizana kwa tepi ya PTFE yotentha kwambiri ndi makiyi apakati pakuchotsa zokwawa za solder. Kuwongolera zambiri zazomwe mungagwiritse ntchito kumatha kupititsa patsogolo zokolola komanso kuchepetsa mtengo wokonzanso.

Zomwe zili pamwambazi zimaperekedwa ndi Jiangsu Aokai New Materials Technology Co., Ltd.

Ngati mukufuna magawo atsatanetsatane, mawonekedwe ogwiritsira ntchito ndi mayankho makonda a PTFE nsalu yotentha kwambiri, tepi ya PTFE yotentha kwambiri, lamba wa mesh wa PTFE, lamba wamakina osasunthika, lamba wamtundu umodzi wa PTFE wokutidwa, lamba wonyamula kutentha kwambiri wosamva kutentha ndi nsalu ya fiberglass, chonde titumizireni:

·  Bambo Guo: +86 18944819998

·  Bambo Liu: +86 13705266308

Timatsatira malingaliro abizinesi a ukatswiri ndi kukhulupirika, ndipo timapereka mayankho okhazikika pamafakitale ndi ntchito yoganizira pambuyo pogulitsa makasitomala padziko lonse lapansi.