Nā pono o nā mea pono graphite a me nā mea hoʻomehana uila no ka umu vacuum

Nā pono o nā mea pono graphite a me nā mea hoʻomehana uila no ka umu vacuum

Me ka hoʻomaikaʻi ʻana o ka pae o ka umu mālama wela valve vacuum, loaʻa i ka mālama wela vacuum nā pono kūikawā, a ua aloha ʻia ka mālama wela vacuum e ka poʻe o ka ʻoihana ma muli o kekahi mau pono e like me ka degassing, degreasing, oxygen free a me ka automation. Eia nō naʻe, he mea kūpono ke hoʻomaopopo ʻia he kūlana kiʻekiʻe ko ka umu mālama wela vacuum no nā mea hoʻomehana uila, e like me ke deformation wela kiʻekiʻe, ka haki. Ua lilo ka Volatilization i mea nui e kāohi ana i ka hoʻomohala ʻana oumu hoʻoheheʻe.
I mea e hoʻoponopono ai i kēia pilikia, ua hoʻohuli ka ʻoihana i kona manaʻo i ka graphite.GraphiteHana ʻia me nā metala ʻē aʻe a he mau pono kīnā ʻole. Ua maopopo he mea kaulana loa ka graphite i nā ʻano umu lapaʻau wela vacuum like ʻole ma ke ʻano he mea hoʻomehana uila.
A laila nā pono o nā mea hoʻomehana uila graphite vacuum heatsink
1) Ke kūpaʻa wela kiʻekiʻe: ʻo ke kiko heheʻe o ka graphite he 3850 ± 50 ℃ a ʻo ke kiko paila he 4250 ℃. Inā paha e puhi ʻia e ka arc wela kiʻekiʻe loa, he liʻiliʻi loa ka pohō kaumaha a he liʻiliʻi loa ke koina o ka hoʻonui wela. Hoʻonui ka ikaika o ka graphite me ka piʻi ʻana o ka mahana. I 2000 ℃, ua pāpālua ka ikaika o ka graphite.
2) Ka hoʻokele a me ka hoʻokele wela: ʻo ka hoʻokele o ka graphite he 100 mau manawa kiʻekiʻe ma mua o nā minelala ʻaʻole metala maʻamau. ʻOi aku ka hoʻokele wela ma mua o ke kila, ka hao, ke kēpau a me nā mea metala ʻē aʻe. E emi ana ka hoʻokele wela me ka piʻi ʻana o ka mahana. ʻOiai i ka mahana kiʻekiʻe loa, lilo ka graphite i mea hoʻokaʻawale. Hiki i ka graphite ke alakaʻi i ka uila no ka mea ʻo kēlā me kēia ʻātoma kalapona i loko o ka graphite e hana i ʻekolu mau pilina covalent me nā mea ʻē aʻe.kalaponanā ʻātoma, a mālama mau kēlā me kēia ʻātoma kalapona i hoʻokahi electron manuahi e hoʻoili i ka uku.
3) Lubricity: ʻo ka hana lubrication o ka graphite e pili ana i ka nui o ka unahi graphite. ʻO ka nui o ka unahi, ʻo ka liʻiliʻi o ke koina friction, a ʻoi aku ka maikaʻi o ka hana lubrication. Paʻa kemika:grafitiHe kūpaʻa kemika maikaʻi ko ia ma ka mahana o ka lumi a hiki ke kūʻē i ka ʻōpala waikawa, alkali a me ka organic solvent corrosion.
4) Plasticity: he paʻakikī maikaʻi ka graphite a hiki ke wili ʻia i loko o nā pepa lahilahi loa. Ke kū'ē i ka haʻalulu wela: ke hoʻohana ʻia ka graphite i ka mahana o ka lumi, hiki iā ia ke kū i ka loli nui o ka mahana me ka ʻole o ka hōʻino. Ke loli koke ka mahana, loli iki ka nui o ka graphite a ʻaʻole e loaʻa nā māwae.
I ka hoʻolālā ʻana a me ka hana ʻana i ka umu hakahaka, pono mākou e noʻonoʻo ʻaʻole loli iki ke kū'ē ʻana o ka mea hoʻomehana uila me ka mahana a paʻa ka resistivity, no laila ʻo ka graphite ka mea makemake ʻia.