ʻO ka pepa graphite kahi mea hana kiʻekiʻe i hana ʻia mai ka graphite kūlohelohe a i ʻole synthetic i hana kūikawā ʻia. Hāʻawi ʻo ia i ka hoʻoili wela a me ka uila maikaʻi loa, māmā, a maʻalahi hoʻi. Hoʻohana nui ʻia ia i ka hoʻoluʻu uila uila, nā pihi ikehu hou, aerospace, a me nā māla ʻē aʻe. ʻO ke kaʻina hana e pili ana i nā ʻanuʻu pololei he nui, e like me ka hoʻomaʻamaʻa mua ʻana i nā mea maka, ka graphitization, calendering, a me ka-processing post.
Hoʻomaʻamaʻa mua ʻana i nā mea kanu
Hana ʻia ka pepa graphite mai ka graphite flake maoli a i ʻole graphite synthetic. ʻO ka mea mua, e hoʻoheheʻe ʻia ka mea maka a me ka hoʻokaʻawale ʻana, e wili ana i ka graphite nui i loko o kahi ʻāpana liʻiliʻi ka nui o ka micron{1}}no ka hoʻomaikaʻi ʻana i ka lokahi i nā kaʻina hana ma hope. A laila, hoʻoneʻe ʻia nā mea haumia e like me ka silicates a me ka hao hao ma o ka flotation a i ʻole ka hoʻomaʻemaʻe kemika e hōʻoia i ka maʻemaʻe graphite ma mua o 99%. No ka pepa graphite e koi ana i ka ma'ema'e ki'eki'e, e ho'oma'ema'e hou 'ia me ka ho'ohana 'ana i ka holoi 'akika ki'eki'e a i 'ole ka hui 'alkali.
ʻO ka hana kiʻi kiʻi
ʻO ka pauka graphite pretreated e hana i ka graphitization i nā wela kiʻekiʻe e hoʻomaikaʻi i kona ʻano papa. Hana ʻia kēia kaʻina hana i loko o kahi kapuahi graphitization (e like me Acheson a i ʻole induction furnace) ma nā mahana ma mua o 2800 degere, e hoʻohuli ana i ke kalapona amorphous i kahi ʻano graphite crystalline nui. ʻAʻole hoʻomaikaʻi wale ka graphitization i ka wela a me ka conductivity uila o ka mea akā hoʻonui pū i kona ikaika mechanical. I kekahi mau kaʻina hana, hoʻohui ʻia kahi mea hoʻopili (e like me ka resin phenolic a i ʻole pitch) e hoʻomaikaʻi i ka hana ʻōwili ma hope, akā pono ka carbonization piha i nā wela kiʻekiʻe e pale i nā koena haumia.
Kalena
ʻOkuʻi ʻia ka mea kiʻi kiʻi ʻia a hoʻopaʻa ʻia, a laila hui pū ʻia me kahi liʻiliʻi o ka lubricant (e like me ka molybdenum disulfide) a ʻolokaʻa mau ʻia i loko o kahi kalena -nui. I ka hoʻomaka ʻana, hoʻohana ʻia nā ʻōwili e hōʻemi i ka mānoanoa, a ukali ʻia e ka hoʻomaʻemaʻe mālie i ka mānoanoa i koho ʻia (maʻamau 0.05-2mm). I loko o ke kaʻina hana kalena, pono e hoʻomalu pono ʻia ka mahana (ma kahi o 100-300 degere) a me ke kaomi e hōʻoia i ka paʻa paʻa ʻana ma waena o nā papa graphite a me ka ʻili maʻemaʻe. Ke hele nei kekahi mau pepa graphite kiʻekiʻe i ka ʻōwili anuanu no ka hoʻomaikaʻi hou ʻana i ka paʻa a me ka paʻa.
Ma hope o ka -Hoʻoponopono a me ka nānā ʻana i ka maikaʻi
Ma hope o ka hana ʻia ʻana, e ʻoki ʻia ka pepa graphite, ʻokiʻoki ʻia, a me ka mālama ʻana i ka ʻili (e like me ka pale -oxidation coating) e like me ka makemake. ʻO ka mea hope loa, hoʻāʻo ʻia ka maikaʻi, me ka hoʻomanawanui mānoanoa, conductivity thermal (hiki i 1500-2000 W/m·K), ikaika tensile, a me ka nānā ʻana maʻemaʻe, e hōʻoia i ka hoʻokō ʻana o ka huahana i nā kūlana ʻoihana.
ʻO ke kaʻina hana no ka pepa graphite e hoʻohui i ka ʻepekema waiwai a me ka ʻenehana hana pololei. ʻO ka hoʻonui ʻana i ke kaʻina hana e pili pono i ka hana hope loa, e lilo ia i mea kumu kumu nui no ka hana kiʻekiʻe -hopena hou.
