Da tushen Yunƙurin kuma fall ne m da halaye na kayan. Don warware matsalar na shrinkage na M-M PCB Board , bari mu taƙaitaccen gabatarwa da littattafai na m farantin Polyimide:
(1) polyimide yana da kyau kwarai thermal yi, zai iya tsayayya da thermal buga gubar-free soldering zafi magani.
(2) Mai na'urorin masana'antun ayan amfani da m haihuwarka hukumar for kananan na'urorin da cewa bukatar jaddada siginar mutunci.
(3) Polyimide yana da babban gilashi mika mulki zafin jiki da kuma high narkewa batu halaye,
al'ada hali da za a sarrafa a 350 ℃ ko fiye.
(4) A cikin kwayoyin rushe, polyimide ne insoluble a na kowa Organic solvents.
M farantin abu sama da kasa tare da babban tushe abu PI kuma manne yana da dangantaka, da cewa shi ne, da wani babban dangantaka da imidation na PI, da hakan mataki na imidization, da karfi da controllability.
Kamar yadda al'ada samar dokoki, bayan m jirgin sabon, da kuma samuwar na graphics line, da kuma hade da m da kuma taushi a kan aiwatar da matsawa za sãɓãwar launukansa digiri na ci gaba da ƙanƙancewa a cikin graphics line etching, da layin tsanani da kuma shugabanci , zai kai ga reorientation da danniya da dukan hukumar, da kuma ƙarshe kai ga general tsari na hukumar sama da kasa canje-canje. a cikin tsari na hada taushi da kuma m, a matsayin surface rufe film da kuma tushe abu PI fadada coefficient ne saba, A cikin ikon yinsa, daga wani mataki na fadada.
Daga cikin yanayi dalili, wani abu ƙaruwa da aka shafi zafin jiki da kuma, a sakamakon doguwar a PCB samar da tsari, abu bayan yawa zafi rigar tsari, mafi girma shrinkage darajar iya samun daban-daban digiri na dabara canje-canje, amma a cikin dogon lokaci na ainihin samar da kwarewa, canji ko na yau da kullum.
Ta yaya ka sarrafa da kuma inganta?
Tsananin magana, da ciki danniya na kowane yi na abu ne daban-daban, da kuma aiwatar da iko da kowane tsari na faranti ba zai zama daidai da wannan. Saboda haka, kula da coefficient na kayan fadada dogara ne a kan wani babban yawan gwaji sansanonin A kan aiwatar da iko da kuma bayanan ilimin kididdiga analysis ne da muhimmanci musamman. A ainihin aiki, da shrinkage na m farantin ne zuwa kashi saukarwa:
A farko ne daga bude ga yin burodi sheet, Wannan mataki ne yafi lalacewa ta hanyar yawan zafin jiki effects:
Don tabbatar da cewa yin burodi farantin sa da Yunƙurin da fall na zaman lafiya, na farko aiwatar iko daidaito, a karkashin Jigo na wani hadade abu, kowane yin burodi farantin dumama da kuma sanyaya ayyukan dole ne m, ba suyi bi yadda ya dace, da kuma sa ƙãre faranti a cikin iska don zafi masha'a. Iyakar hanyar rage girman ciki danniya sa da kayan fadada da kuma ƙanƙancewa.
A biyu lokaci ya faru a kan aiwatar da juna canja wuri. A shrinkage wannan mataki ne yafi lalacewa ta hanyar da canji na danniya da fuskantarwa a littattafai.
Don tabbatar da cewa line canja wurin tsari ne barga, All yin burodi da zanen gado ba zai iya zama grinds, kai tsaye ta hanyar da sinadaran tsaftacewa line surface pre-magani, bayan matsin lamba membrane surface dole ne matakin kashe, kwamitin surface tsaye kafin da kuma bayan da daukan hotuna lokaci dole ne isasshen , bayan da gama line canja wuri, saboda da canji da danniya fuskantarwa, da m farantin zai gabatar da wani daban-daban mataki na crimp da ƙanƙancewa, haka film diyya iko da dangantaka da layin zuwa wuya da kuma taushi a hade tare da sahihancin iko, a lokaci guda, m farantin ƙaruwa da ascertainment na cikin kewayon dabi'u, shi ne samar da ta tallafa m panel data akai.
A uku lokaci na ƙanƙancewa ya auku a kan aiwatar da wuya da kuma taushi da hukumar latsa, babban matsawa sigogi da kuma kayan Properties na wannan mataki ne m.
Dalilai influencing wannan lokaci na fadada hada da dumama kudi na lamination, da saitin matsin sigogi, da kuma saura jan kudi da kuma kauri daga cikin core. A general, da karami da saura jan kudi, da girma da shrinkage darajar. da sirara da zuciyar, da girma da darajar da Yunƙurin kuma fall. Duk da haka, daga babban ga kananan, shi ne a hankali a hankali tsari, don haka film diyya ne da muhimmanci musamman. Bugu da kari, saboda da yanayin da m jirgin da kuma m hukumar kayan, ta diyya ne wani ƙarin factor cewa bukatar a yi la'akari.