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A&Q o PCB (2)

  • 2021-10-08 18:10:52
9. He aha ka olelo hooholo?
Pane: Ma kahi mamao o 1mm, hiki ke hōʻike ʻia ka hoʻonā ʻana o nā laina a i ʻole nā ​​laina spacing e hana ʻia e ka pale kiʻi maloʻo e ka nui loa o nā laina a i ʻole spacing.ʻO kaʻokoʻa ma waena o ke kiʻi maloʻo a me ka mānoanoa kiʻi kū'ē Ua pili ka mānoanoa o ke kiʻi polyester.ʻO ka mānoanoa o ka papa kiʻi kūʻē, ʻo ka haʻahaʻa o ka hoʻonā.Ke hele ka mālamalama i ka pā kiʻi a me ka kiʻiʻoniʻoni polyester a me ke kiʻi maloʻo e hōʻike ʻia, ma muli o ka hoʻopuehu ʻana o ka mālamalama e ka kiʻi polyester, ʻo ka ʻaoʻao māmā Seriously, ʻoi aku ka haʻahaʻa o ka hoʻonā.


10. He aha ka etching kū'ē a me ka electroplating kū'ē o PCB maloʻo film?
Pane: Etching resistance: ʻO ke kiʻi maloʻo pale pale ma hope o ka photopolymerization e hiki ke kū i ka etching o ka hao trichloride etching solution, persulfuric acid etching solution, acid chlorine, copper etching solution, sulfuric acid-hydrogen peroxide etching solution.I ka hopena etching i luna, i ka wā o ka mahana he 50-55 ° C, pono ka ʻili o ke kiʻi maloʻo me ka lauoho, leakage, warping a me ka hoʻokahe.Electroplating kū'ē: i loko o ka acidic'ālohilohi keleawe plating, fluoroborate maʻamau alakaʻi huila, fluoroborate kukui tin-lead alloy plating a me nā ʻano like ʻole pre-plating solutions o ka electroplating ma luna, ke kiʻi maloʻo pale pale ma hope o ka polymerization ʻaʻohe lauoho lauoho, Infiltration, warping and shedding. .


11. No ke aha e pono ai i ka mīkini hoʻolaha ke omo i kahi ʻūhā i ka wā e wehe ai?

Pane: Ma nā hana hoʻolaha māmā ʻole i hui pū ʻia (nā mīkini hōʻike me nā "points" ma ke kumu kukui), ʻo ke kiʻekiʻe o ka absorption vacuum kahi mea nui e pili ana i ka maikaʻi o ka ʻike.He papa waena nō hoʻi ka ea., Aia ka ea ma waena o ke kiʻi ʻoniʻoni ea, a laila e hoʻopuka i ka refraction māmā, e hoʻopilikia i ka hopena o ka ʻike.ʻAʻole wale ʻo Vacuum e pale i ka refraction māmā, akā no ka pale ʻana i ke āpau ma waena o ka kiʻiʻoniʻoni a me ka papa mai ka hoʻonui ʻana, a e hōʻoia i ka alignment / ʻO ka maikaʻi o ka ʻike.




12. He aha nā pōmaikaʻi o ka hoʻohana ʻana i ka pā wili lehu pele no ka mālama mua ʻana? hemahema?
Pane: Pono: a.ʻO ka hui pū ʻana o nā ʻāpana pumice abrasive a me nā pulupulu nylon i hoʻopili ʻia me ka lole pulupulu, hiki ke wehe i nā lepo āpau a hōʻike i ke keleawe hou a maʻemaʻe;b.Hiki iā ia ke hana i kahi one-grained holoʻokoʻa, ʻōpala a me ka ʻaʻahu D. ʻAʻole e pōʻino ka ʻili a me ka lua ma muli o ka hopena palupalu o ka pulupulu nylon;d.ʻO ka maʻalahi o ka pulupulu nylon palupalu hiki ke hoʻoponopono i ka pilikia o ka ʻili papa ʻole i hoʻokumu ʻia e ka ʻaʻahu o ka pulupulu;e.Ma muli o ka ʻano like ʻole o ka ʻili o ka pā a me ka ʻole o nā grooves, ua hoʻemi ʻia ka hoʻopuehu ʻana o ke kukui ʻike, a laila e hoʻomaikaʻi ai i ka hoʻonā o ke kiʻi.Nā pōʻino: ʻO nā mea maikaʻi ʻole, ʻo ia ka maʻalahi o ka pauka pumice e hōʻino i nā ʻāpana mechanical o nā mea hana, ka mana o ka puʻupuʻu nui o ka pumice pauka a me ka wehe ʻana i ke koena o ka pauka pumice ma ka ʻili o ka substrate (ʻoi loa i nā lua. ).



13. He aha ka hopena o ka papa kaapuni e ulu ana i ka nui a i ʻole ka liʻiliʻi?
Pane: Hoʻoholo ʻia ka manawa hoʻomohala kūpono e ka wahi hoʻomohala (ke kiko kahi e wehe ʻia ai ka kiʻiʻoniʻoni maloʻo ʻole mai ka papa i paʻi ʻia).Pono e mālama ʻia ka helu hoʻomohala ma ka pākēneka mau o ka lōʻihi o ka pauku hoʻomohala.Inā kokoke loa ka wahi hoʻomohala i ka puka o ka ʻāpana e ulu ana, ʻaʻole e hoʻomaʻemaʻe ʻia a hoʻomohala ʻia ke kiʻi kūʻē unpolymerized, a hiki ke waiho ʻia ke koena pale ma ka ʻili o ka papa a kumu i ka ulu ʻana i haumia.Inā kokoke loa ka wahi hoʻomohala i ka puka o ka ʻāpana hoʻomohala, hiki ke kālai ʻia ke kiʻi maloʻo polymerized e Na2C03 a lilo i lauoho ma muli o ka launa lōʻihi ʻana me ka hopena e ulu ana.ʻO ka mea maʻamau ke hoʻomalu ʻia ka wahi hoʻomohala i loko o 40% -60% o ka lōʻihi o ka ʻāpana hoʻomohala (35%-55% o kā mākou hui).


14. No ke aha mākou e hoʻomoʻa mua ai i ka papa ma mua o ka paʻi ʻia ʻana o nā huapalapala?
Pane: ʻO ka papa a i kālua mua ʻia e hoʻonui i ka ikaika hoʻopaʻa ma waena o ka papa a me nā huaʻōlelo ma mua o ka paʻi ʻia ʻana o nā huaʻōlelo, a me ka b e hoʻonui i ka paʻakikī o ka ink solder mask ma ka ʻili o ka papa e pale ai i ka solder mask oil cross -ka laha ʻana ma muli o ka paʻi ʻana a i ʻole ka hana ʻana ma hope.


15. No ke aha e pono ai mākou e koli i ka pulupulu o ka mīkini wili pā ma mua o ka mālama ʻana?
Pane: Aia kekahi mamao ma waena o nā pahu palaki.Inā ʻaʻole ʻoe e hoʻohana i ke koʻi no ka wili ʻana i ka pā, nui nā wahi e ʻaʻahu ʻole ʻia, e hopena i ka hoʻomaʻemaʻe ʻole ʻana o ka ʻili o ka pā.Me ka ʻole o ka luli ʻole, e hana ʻia kahi awāwa pololei ma ka ʻili o ka pā.Nahaha uea, a maʻalahi ka wawahi ʻana i nā lua a hana i nā hiʻohiʻona huelo me ka ʻole o ka luli ʻana i ka lihi o ka lua.


16. He aha ka hopena o ka squeegee i ka pai ana?
Pane: ʻO ke kihi o ka squeegee e hoʻomalu pono i ka nui o ka aila, a ʻo ke kūlike o ka lau i ka ʻili e pili pono i ka maikaʻi o ka paʻi.


17. He aha nā hopena o ka solder mask a me ka mahana a me ka haʻahaʻa i loko o ka lumi pouli ma ka hana PCB?
Pane: Ke kiʻekiʻe a haʻahaʻa paha ka mahana a me ka haʻahaʻa o ka lumi ʻeleʻele: 1. E hoʻonui ia i ka ʻōpala i ka lewa, 2. He maʻalahi ka ʻike ʻana o ke kiʻi paʻa kiʻi i ka alignment, 3. He maʻalahi ke kumu o ka kiʻiʻoniʻoni e deform, 4. He mea maʻalahi ke hana i ka ili papa e oxidize.


18. No ke aha ʻaʻole e hoʻohana ʻia ka solder mask ma ke ʻano he wahi ulu?

Pane "No ka mea, he nui nā mea ʻokoʻa i loko o nā inika solder mask. ʻO ka mea mua, ʻoi aku ka paʻakikī o nā ʻano o ka inika. He ʻokoʻa nā waiwai o kēlā me kēia inika. I ka wā e paʻi ʻia ai, ʻo ka mānoanoa o kēlā me kēia ʻīnika papa e hoʻohālikelike ʻia ma muli o ka ka hopena o ke kaomi, ka wikiwiki a me ka viscosity, ʻaʻole like ia me ka kiʻiʻoniʻoni maloʻo. ʻOi aku ka lōkahi o ka mānoanoa o ka kiʻiʻoniʻoni hoʻokahi. I ka manawa like, pili pū ʻia ka ʻīnika kūʻai kūʻai e ka manawa kuke ʻana, ka mahana, a me ka ikehu hoʻolaha. i ka wā o ka hana ʻana. Ua like ka hopena o ka papa. No laila ʻaʻole nui ka manaʻo o ka solder mask ma ke ʻano he wahi hoʻomohala.


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