ʻO ka Green Silicon Carbide Micropowder: Ka Hōkū Piʻi o nā Abrasives Hana Kiʻekiʻe
I kēia lā, e hoʻomau kākou i kā kākou kūkākūkā ʻana no kekahi mea pāʻani koʻikoʻi ʻē aʻe i loko o ka ʻohana abrasive—pauka micropoda silicon carbide ʻōmaʻomaʻo. ʻO mākou o ka ʻoihana e kapa pilikino iā ia ʻo "Hulk," a ʻaʻole manaʻo he corny ka inoa; ʻo kona mau hiki ke kū maoli i kēlā inoa. Ua kūkākūkā mākou i ka alumina keʻokeʻo i hoʻohui ʻia me ka piha; ua like ia me kahi mea hana lima ʻaha hoʻokolokolo me ka noʻonoʻo, e hana ana i ka hana nani a maʻemaʻe. Akā ʻo ka "Hulk" o kēia lā ua like ia me kahi luna koa mua e hoʻouka ana i ke kaua, e loea ana i nā kaua paʻakikī a me ka hoʻoponopono ʻana i nā pilikia paʻakikī loa. No ke aha i kapa ʻia ai ʻo "hōkū piʻi"? ʻO ke kumu mua ʻo ia kona "paʻakikī."
ʻO ka silicon carbide ʻōmaʻomaʻo ka mea paʻakikī loa ma waena o nā mea abrasive maʻamau, me ka paʻakikī Mohs o 9.5, haʻahaʻa iki ma mua o ka daimana. Mai hoʻohaʻahaʻa i kēia ʻokoʻa 0.5 ma luna oalumina keʻokeʻo i hoʻohui ʻia; i ka wā e hana ai me kekahi mau mea paʻakikī loa, he ʻokoʻa nui ia. Ke puka mau mai nei nā mea hou: nā keramika silicon carbide, ka alumini nitride, ke aniani sapphire, nā wafers silicon photovoltaic, ka carbide cemented—ʻoi aku ka paʻakikī o kēlā me kēia ma mua o ka mea hope. ʻO ka hoʻopili ʻana i nā abrasives maʻamau e like me ke kahakaha ʻana i ka pōhaku me kahi pepa hao—he hana luhi a ʻaʻole pono.
Akā me ka silicon carbide micropowder ʻōmaʻomaʻo, kūpono wale nō ia. ʻO kona mau ʻaoʻao ʻoi a ʻokoʻa e hana e like me nā mea hana ʻoki daimana liʻiliʻi, e "nau" pono ana i kēia mau mea paʻakikī. ʻOi loa aku i ka ʻoihana photovoltaic, e ʻoki ana i kēlā mau monocrystalline a me polycrystalline silicon ingots paʻakikī a palupalu, e ʻike ʻoe ua hoʻohana ʻia ia ma kahi hapa nui o nā laina hana. Me ka ʻole o ia mea, ʻaʻole e hoʻemi ʻia nā kumukūʻai a me ka pono o ka hana ʻana. ʻO kēia ka mea āu e kapa ai "kekahi mea e hoʻopau ana i kekahi."
Eia kekahi, he maikaʻi loa kona conductivity thermal.
He mea hoʻokele wela maikaʻi loa kēia mea ponoʻī. He pōmaikaʻi nui kēia i nā kaʻina hana wili. E noʻonoʻo, hoʻopuka koke ka wili wikiwiki i ka nui o ka wela. Inā ʻaʻole hiki i kēia wela ke hoʻopau a paʻa i loko o ka mea hana, he mea pōʻino ia: ua maʻalahi ka ʻili o ka mea hana i ka "puhi" a me ka nahā; hiki i nā ʻāpana metala ke anneal, e hoʻololi ana i ko lākou paʻakikī; a hiki i nā ana o nā ʻāpana kikoʻī ke lilo i mea pololei ʻole ma muli o ka hoʻonui ʻana a me ka ʻūlū ʻana o ka wela.
Hana ka silicon carbide micropowder ʻōmaʻomaʻo e like me kahi "ʻōnaehana hoʻoheheʻe wela liʻiliʻi" i kūkulu ʻia, e lawe koke ana i ka wela mai ka ʻāpana wili, e hoʻemi pono ana i ka mahana o ka wahi hana. Hoʻemi kēia i ka pōʻino i ka ʻāpana hana i hoʻokumu ʻia e ka wela nui ʻana, e hōʻoiaʻiʻo ana i ka maikaʻi o ka hana ʻana. He ʻano koʻikoʻi loa kēia, ʻoiai no nā mea a me nā ʻāpana i maʻalahi loa i ka wela.
Eia kekahi, ʻo kona waiwai "hoʻokala ponoʻī" e mālama i ka hana i ʻoi mau.
ʻAʻole nā mea hoʻopōʻino maikaʻi he huahana "hoʻokahi wale nō"; pono lākou e mau. ʻOiainā ʻāpana carbide silicon ʻōmaʻomaʻohe paʻakikī a palupalu, ma lalo o ka ikaika wili, e haki nā ʻāpana palupalu, e hōʻike ana i nā lihi hou a ʻoi aku ka ʻoi e hoʻomau i ka hana. Ua kapa ʻia kēia ʻano he "hoʻokala ponoʻī."
Ua like kēia me ka hoʻohana ʻana i ka penikala mīkini; ke mae wale, kaomi hou ʻoe, a puka mai kahi penikala hou e hoʻomau i ke kaha kiʻi. ʻO ke ʻano kēia, ma o ke kaʻina hana holoʻokoʻa, e mau ana kona hiki ke ʻoki me ka hou a me ka ikaika, me ka ʻole o ka mae wale i ka hala ʻana o ka manawa. Paʻa ka pono o ka hana ʻana, a like ka maikaʻi o ka ʻili o ka mea hana, e pale ana i kahi kūlana kahi e hoʻomaikaʻi ai ka maikaʻi i ka hoʻomaka akā e emi ana ma hope. He mea nui kēia no ka hana hou, nui, a me ka hana automated.
E haʻi aku wau iā ʻoe i kahi moʻolelo ʻoiaʻiʻo.
I ka makahiki i hala, ua hoʻokaʻaʻike mai iaʻu kahi hale hana e hana ana i nā nozzles mīkini hana kiʻekiʻe. Hana ʻia kā lākou mau nozzles me nā keramika kūikawā me ka paʻakikī kiʻekiʻe loa. ʻO ka hoʻohana ʻana i nā mea abrasives maʻamau no ka hana ʻana he mea kūpono ʻole a pipiʻi paha, a i ʻole he kūlana haʻahaʻa ke ʻano o ka ʻili, e hōʻike pinepine ana i nā micro-cracks. Ma hope mai, ua hoʻāʻo lākou e hoʻohana i ka silicon carbide micropowder ʻōmaʻomaʻo no ka wili maikaʻi a me ka polishing, a ua koke nā hopena. ʻAʻole wale ka piʻi ʻana o ka pono ma 30-40%, akā ʻo ka mea nui loa, ma lalo o kahi microscope, ua aneane ʻike ʻole ʻia ka papa hōʻino ma ka ʻili o ka workpiece, a ua piʻi nui ka nui o ka hua. Ua kanikau ko lākou haku ma hope, "Me he mea lā ʻaʻole paʻakikī ka hana; ʻaʻole mākou i koho i nā lako kūpono."
ʻIke ʻoe, ʻo ia ka ikaika o ka "Hulk"—ma kona ʻoihana akamai, hiki iā ia ke hoʻoponopono i nā pilikia i hiki ʻole i nā poʻe ʻē aʻe ke hoʻoponopono.
ʻOiaʻiʻo, ʻaʻole nele kēia "vanguard general" i kona mau ʻano ʻē. ʻOiai he paʻakikī, ʻaʻole maikaʻi kona paʻakikī, e lilo ia i mea palupalu. No laila, i ka wā e hana ai me kekahi mau mea paʻakikī kiʻekiʻe, e like me kekahi mau kila, ʻaʻole paha e hana maikaʻi e like me ka alumina keʻokeʻo i hoʻoheheʻe ʻia. Eia kekahi, ʻo kona kala ʻōmaʻomaʻo emerald mai kahi liʻiliʻi o nā haumia; i nā kaʻina hana polishing semiconductor kikoʻī e koi ana i ka maʻemaʻe kemika loa, pono paha nā mea maʻemaʻe. Akā, ʻaʻole kēia e hōʻemi i kona kūlana koʻikoʻi i ka hana ʻana i nā mea paʻakikī a palupalu.
No ke aha i manaʻo ʻia ai he "hōkū piʻi"? E nānā wale i nā ʻano o ka ʻoihana o kēia manawa a me ka wā e hiki mai ana: nā semiconductors hanauna ʻekolu (kalaka silicon, gallium nitride), ikehu hou photovoltaic, keramika aerospace, aniani optical kiʻekiʻe… nui o kēia mau ʻoihana sunrise e hilinaʻi nei i nā mea hana koʻikoʻi i paʻakikī a palupalu hoʻi. ʻO ka silicon carbide micropowder ʻōmaʻomaʻo kekahi o nā mea hana kūpono a maikaʻi loa no ka hoʻoponopono ʻana i kēia mau pilikia paʻakikī.
Ke ulu nei kona hiki ke ulu pū me kēia mau ʻoihana ʻenehana kiʻekiʻe. I ka wā e ulu ana kēia mau ʻoihana, e mau ana ka noiʻi no ka micropowder silicon carbide ʻōmaʻomaʻo hana kiʻekiʻe. Ke noiʻi mau nei kā mākou ʻoihana abrasive pehea e hoʻonui ai i ka like o kāna mau ʻāpana a me ka hoʻomaikaʻi ʻana i kona mālama ʻana i ka ʻili, i hiki ai iā ia ke ʻālohilohi hou aʻe i kēia au hoʻohiki.