ʻO ka waiwai o ka Green Silicon Carbide Micropowder i ka hana ʻana i nā mea hana kikoʻī
I kona hele ʻana i loko o nā hale hana mea hana pololei, kahi e lohe ai kekahi i ka puʻuwai o ke kanaka, ua piha ka ea i ke ʻala palupalu o ka coolant. ʻO Old Master Li, e ʻūlū ana i kona mau maka, e nānā ana i kahi poloka ana tungsten carbide i wili hou ʻia me kahi aniani hoʻonui, e ʻōhumu ana, "I kēia mau lā, ke lilo nei kēia hana i mea paʻakikī loa. ʻO kahi hewa hoʻokahi, ʻoiai he ʻumi tausani o ka laulā o ka lauoho, hiki ke uhaʻi i ka mea hana holoʻokoʻa!" ʻOiaʻiʻo, ʻo ka puʻuwai o nā mea hana pololei—nā aniani optical, nā bearings ceramic, a me nā carbide probes—he paʻakikī paʻakikī kēlā me kēia: ʻo nā koi gritty, brittle, akā naʻe ke koi nei i lalo i ka nanometer. I kēia manawa, ke pāʻani mālie nei kahi micropowder ʻōmaʻomaʻo olaola i ke kuleana o "hero ma hope o nā hiʻohiʻona"—ʻo ka silicon carbide micropowder ʻōmaʻomaʻo, ka "micrometer-level scalpel" pono ʻole i ka hana pololei.
ʻAʻole wale ke one ka silicon carbide ʻōmaʻomaʻo (SiC). He waiwai i hana ʻia mai nā mea maka e like me ke one quartz a me ka petroleum coke i loko o kahi umu kū'ē, loaʻa iā ia kahi kūkulu paʻa maoli (he paʻakikī Mohs o 9.5, ʻo ka lua wale nō i ka daimana a me ka cubic boron nitride). ʻOi aku ka kupaianaha o kona mau kihi kristal ʻoi a me nā waiwai kemika paʻa loa, e ʻae ana iā ia e kū i nā mahana kiʻekiʻe a kū'ē i kekahi pilikia me nā mea e hana ʻia nei. Ma hope o ka kuʻi ʻana a me ka hoʻokaʻawale ʻana, ʻo kēia mau micropowders ʻōmaʻomaʻo ʻālohilohi, e like me ka liʻiliʻi o kekahi mau microns a i ʻole nā hapa o ka micron, ua like me kahi "hui pahi micro-sharp" i hoʻopaʻa ʻia a ʻoi hoʻi i hoʻolālā kūikawā ʻia e hoʻoponopono i nā mea paʻakikī loa, ultra-brittle me ka pololei koi.
Ke hoʻoponopono nei i ka paʻakikī: ʻO ka "ʻenemi" o ka carbide a me nā keramika
ʻO nā mea hana ʻokiʻoki carbide, nā noho hali keramika, a me nā apo sila silicon carbide he mea maʻamau i nā mea hana kikoʻī. He paʻakikī loa kēia mau mea a paʻakikī nā mea abrasive maʻamau e komo i loko o lākou, e hopena ana i ka hana haʻahaʻa a me ka maʻalahi o ka chipping a me ka haki. ʻO ka hiki ʻana mai o ka silicon carbide micropowder ʻōmaʻomaʻo e hoʻololi koke i ke ʻano. "Ua wili mua wau i nā wēlau probe carbide me ka mālama nui, e like me ke humuhumu, a ua haki pinepine nā ʻaoʻao," wahi a Xiao Wang, nāna e hoʻohana i kahi wili ʻili kikoʻī. "Mai ka hoʻohana ʻana i kahi wai wili i hana ʻia me ka silicon carbide micropowder ʻōmaʻomaʻo, ua lilo wau i mea hilinaʻi nui! ʻOi aku ka wikiwiki o ka hānai ʻana, ʻoi aku ka 'crisp' o ka ikaika wili, a ʻo ka mea nui, ʻoi aku ka maikaʻi o ka ʻaoʻao, me ka emi ʻana o ka chipping." ʻO ka mea huna ma hope o kēia aia i ka paʻakikī ultra-kiʻekiʻe a me nā ʻaoʻao ʻoi o ka silicon carbide micropowder ʻōmaʻomaʻo, ka mea "ʻoki" maʻemaʻe ma o ka mea ma mua o ka wāwahi ʻana me ka ikaika brute. Hoʻemi nui kēia i ka hōʻino ʻana i nā ʻāpana hana palupalu a hoʻonui nui i ka pono o ka hana ʻana.
Ke kālai ʻana i ka "Glass Heart": Nā mea hoʻomaʻemaʻe akamai o nā mea hana Optical a me Semiconductor
ʻO nā maka o nā mea hana kikoʻī—nā aniani optical a me nā prism, a me nā wafers semiconductor a me nā ʻāpana sensor MEMS—pono nā ʻili e laumania e like me ka ʻili pēpē (ʻo ka ʻinoʻino ʻo Ra e hiki pinepine i ka pae nanometer), me ka ʻole o kahi no nā ʻōpala a i ʻole ka hōʻino ʻana o lalo. Hoʻololi ka micropowder silicon carbide ʻōmaʻomaʻo i haku polishing palupalu. I ka wā o nā pae lapping a me ka polishing, hoʻohana ʻia ka micropowder silicon carbide ʻōmaʻomaʻo me ka nui o nā ʻāpana ʻoi aku ka maikaʻi (W-grade a ʻoi aku ka maikaʻi) a hoʻokuʻu ʻia i loko o kahi wai polishing i hoʻolālā kūikawā ʻia. "No nā oscillators kristal quartz a i ʻole nā ʻili optical kikoʻī, ʻoi aku ka maikaʻi o ka hoʻokuʻu ʻana o ka pauka silicon carbide ʻōmaʻomaʻo ma mua o kekahi mau mea pipiʻi," wahi a kekahi mea hana lima me iwakālua mau makahiki o ka ʻike ma kahi hale hana optical. "Hāʻawi ia i kahi ikaika wili paʻa, a ʻoi aku ka liʻiliʻi o ka hiki ke hoʻopili a ʻōpala i ka ʻili. ʻAʻole ʻālohilohi ka ʻili i wili ʻia, a he papau ka papa hōʻino o lalo, he mea nui ia no ka transmittance optical a me ke kūpaʻa lōʻihi o nā ʻāpana optical!" ʻO ka inertness kemika kūlohelohe o ka silicon carbide ʻōmaʻomaʻo e hōʻoiaʻiʻo ana hoʻi ʻaʻole e hoʻokomo ke kaʻina polishing i nā haumia a me ka haumia, e hōʻoiaʻiʻo ana i ka maʻemaʻe o ka ʻāpana hope loa.
Hoʻolālā Kūpono: ʻO ka "Pahi Kālai" no nā ʻĀpana Micro paʻakikī
Ua piha nā mea hana kikoʻī me nā ʻano microparts ʻano ʻē aʻe: nā mea hoʻokaʻawale keramika ʻano ʻē, nā ʻauwaha i loko o nā ʻāpana microfluidic, a me nā micro-gears i hana ʻia me ka carbide cemented. He paʻa a paʻakikī kēia mau wahi, e hiki ʻole ai ke kiʻi i nā mea hana kuʻuna. ʻO ka micropowder silicon carbide ʻōmaʻomaʻo, i hui pū ʻia me ka ʻenehana mīkini kikoʻī, lilo ia i mea hana ikaika no ka "micro-carving." No ka laʻana, ʻo ka hoʻohui ʻana i ka pauka silicon carbide ʻōmaʻomaʻo maikaʻi i ka wai wili no ka wili jig kikoʻī a i ʻole ka ʻoki ʻana i ka uea hiki ke hoʻomaikaʻi nui i ka pono o ka wili ʻana a me ka pololei o ke contour no nā mea superhard. "ʻO ka hana ʻana i kēlā microhole lahilahi lauoho i loko o kahi nozzle carbide e pili ana i ka wili ʻana iā ia i kēlā me kēia ʻāpana me kahi wili wili i hoʻokomo ʻia me ka pauka silicon carbide ʻōmaʻomaʻo, i hui pū ʻia me ke poʻo wili daimana lahilahi nila," wahi a Zhao, nāna e mālama i ka mālama ʻana i ka mold kikoʻī. "Hana ia i nā paia puka pololei a laumania, me ka mana dimensional kūlike i loko o nā micrometer. ʻAʻole i loaʻa i ka hoʻohana ʻana i nā pauka ʻē aʻe kahi hopena pololei." I ka hana ʻana me ke kōkua ultrasonic, he hoa maikaʻi loa ka pauka silicon carbide ʻōmaʻomaʻo no nā haʻalulu alapine kiʻekiʻe, e hiki ai ke ʻeli pololei, ʻoki, a me ka hana ʻana i nā contour maikaʻi o nā mea paʻakikī a palupalu.
Ke hoʻohana pono nei i kēia "Micron Knife": ʻIke mai ka Workshop
I ka hoʻomau ʻana o nā mea hana kikoʻī e lilo i mea liʻiliʻi, akamai, a loaʻa ka hana kiʻekiʻe aʻe, e lilo wale nā koi kikoʻī hana no nā ʻāpana koʻikoʻi i mea paʻakikī. Ke hoʻomaikaʻi mau nei ka ʻenehana pauka silicon carbide ʻōmaʻomaʻo. ʻO nā micropowders me nā hoʻolaha nui o nā ʻāpana, nā ʻāpana maikaʻi (nanoscale), a me nā morphologies hiki ke hoʻomalu ʻia (e like me ka sphericity hapa e hōʻemi i ke kahakaha ʻana) he mau wahi noiʻi a me ka hoʻomohala wela. Ke hoʻoikaika mau nei nā ʻenekinia e hoʻohui maikaʻi i nā micropowders silicon carbide ʻōmaʻomaʻo i loko o nā ʻāpana hana automated a akamai (e like me nā kikowaena polishing robotic a me nā ʻōnaehana wili adaptive me ka nānā ʻana ma ka pūnaewele) e hoʻokō i ka hana pololei paʻa a maikaʻi. Ma nā hale hana kikoʻī o ka wā e hiki mai ana, ʻo kēia "scalpel pae micrometer" e ʻoi aku ka ʻoi a me ka akamai.