He nui nā pono o ka pauka graphite e hoʻohana ana i nā electrodes graphite.

He nui nā pono o ka pauka graphite i hoʻohana ʻia ma ke ʻano he mau electrodes graphite. Eia nō naʻe, pehea e hoʻopuka ai i nā pono o kēia mea, e hoʻokō maoli i ka hoʻomaikaʻi ʻana i ka pono, ka hoʻemi ʻana i ke kumukūʻai a me ka hoʻonui ʻana i ka hoʻokūkū mākeke, ʻaʻole wale kēia mau pilikia no nā mea hana graphite e noʻonoʻo ai, akā ʻo nā pilikia hoʻi e pono ai nā mea hoʻohana graphite e noʻonoʻo pono. No laila, i ka wā e hoʻopili ai i nā mea graphite, he aha nā pilikia e pono e hoʻoponopono mua ʻia?

Wehe ʻana i ka lepo: Ma muli o ke ʻano liʻiliʻi o nā ʻāpana o ka graphite, nui ka lepo i hana ʻia i ka wā o ka hana ʻana i ka mīkini, kahi hopena koʻikoʻi i ke kaiapuni o ka hale hana. Eia kekahi, ʻo ka hopena o ka lepo ma luna o nā lako hana e hōʻike nui ʻia ana i kona mana ma ka lako mana o nā lako. Ma muli o ka conductivity uila maikaʻi loa o ka graphite, ke komo i loko o ka pahu mana, hiki ke hana i nā kaapuni pōkole mana a me nā hewa ʻē aʻe. No laila, ua ʻōlelo ʻia e hoʻolako ʻia me kahi mīkini hana graphite kūikawā no ka hana ʻana. Eia nō naʻe, ma muli o ke kumukūʻai hoʻopukapuka kālā kiʻekiʻe o nā lako hana kūikawā no ka graphite, nui nā ʻoihana e makaʻala loa i kēia ʻano. Ma lalo o ia mau kūlana, hiki ke hoʻohana ʻia kekahi mau hopena:

ʻO ka hoʻopuka ʻana i nā electrodes graphite: Me ka hoʻonui nui ʻia o ka hoʻohana ʻana o ka graphite i ka ʻoihana hoʻoheheʻe, ua hoʻolauna pū nā ʻoihana hana ʻaelike hoʻoheheʻe (OEM) i ka ʻoihana OEM o nā electrodes graphite.

Ma hope o ka hana ʻana i ka hoʻokomo ʻaila: Ma hope o ke kūʻai ʻana i ka graphite, e hoʻokomo mua ʻia i loko o ka ʻaila huna no kekahi manawa (e pili ana ka manawa kikoʻī i ka nui o ka graphite), a laila waiho ʻia i loko o kahi kikowaena mīkini no ka hana ʻana. Ma kēia ʻano, ʻaʻole e lele a puni ka lepo graphite akā e hāʻule i lalo. E hōʻemi kēia i ka hopena ma nā lako a me ke kaiapuni.

Ke hoʻololi nei i kahi kikowaena mīkini: ʻO ka mea i kapa ʻia ʻo ka hoʻololi nui ʻana e pili ana i ka hoʻokomo ʻana i kahi mea hoʻomaʻemaʻe vacuum ma kahi kikowaena mīkini maʻamau.

ʻO ka hakahaka hoʻokuʻu i ka wā o ka hana ʻana o ka graphite hoʻokuʻu: ʻAʻole e like me ke keleawe, ma muli o ka wikiwiki o ka hoʻokuʻu ʻana o nā electrodes graphite, ʻoi aku ka nui o ka slag hana e popopo i kēlā me kēia manawa. Pehea e wehe pono ai i ka slag e lilo i pilikia. No laila, pono e ʻoi aku ka nui o ka hakahaka hoʻokuʻu ma mua o ke keleawe. Ma ke ʻano laulā, i ka wā e hoʻonohonoho ai i ka hakahaka hoʻokuʻu, ʻoi aku ka nui o ka hakahaka hoʻokuʻu o ka graphite ma mua o ke keleawe.

Hoʻomaopopo pololei i kona mau hemahema: Ma waho aʻe o ka lepo, loaʻa pū kekahi mau hemahema o ka graphite. No ka laʻana, i ka wā e hana ai i nā ʻōmole aniani, i hoʻohālikelike ʻia me nā electrodes keleawe, ʻoi aku ka liʻiliʻi o ka hiki i nā electrodes graphite ke hoʻokō i ka hopena i makemake ʻia. No ka hoʻokō ʻana i kahi hopena ʻili maikaʻi aʻe, pono e koho ʻia ka nui o nā ʻāpana liʻiliʻi o ka graphite, a ʻo ke kumukūʻai o kēia ʻano graphite he 4 a 6 mau manawa ke kiʻekiʻe ma mua o ka graphite maʻamau. Eia kekahi, haʻahaʻa ka hiki ke hoʻohana hou ʻia o ka graphite. Ma muli o ke kaʻina hana, hiki ke hoʻohana ʻia kahi hapa liʻiliʻi o ka graphite no ka hana hou ʻana a me ka hoʻohana ʻana. ʻAʻole hiki ke hoʻohana hou ʻia ka graphite ʻōpala ma hope o ka mīkini hoʻokuʻu uila no kēia manawa, no laila e hoʻokau ana i kekahi mau pilikia i ka hoʻokele kaiapuni o nā ʻoihana. Ma kēia ʻano, hiki iā mākou ke hāʻawi i ka hana hou manuahi o ka graphite ʻōpala no nā mea kūʻai aku e pale aku i ka hoʻopilikia ʻana no kā lākou palapala hōʻoia kaiapuni.

ʻO ka ʻoki ʻana i ka hana mechanical: ʻOiai ʻoi aku ka palupalu o ka graphite ma mua o ke keleawe, inā hana ʻia ka graphite me ka hoʻohana ʻana i ke ʻano like me nā electrodes keleawe, he mea maʻalahi ke kumu o ka ʻoki ʻana o nā electrodes, ʻoiai ke hana ʻana i nā electrodes lahilahi. Ma kēia ʻano, hiki ke hāʻawi ʻia ke kākoʻo loea manuahi i nā mea hana mold. Hoʻokō nui ʻia ma o ke koho ʻana i nā mea hana ʻoki, ke ala o ka hele ʻana o ka mea hana, a me ke ʻano kūpono o nā palena hana. Ua hoʻokumu ʻia nā laʻana graphite flake kūlohelohe e ke kaomi anu me ka ʻole o ka mea hoʻopaʻa e hoʻohana ana i ka graphite flake kūlohelohe. Ua aʻo ʻia nā hopena o nā loli i ke kaomi hana a me ka paʻa ʻana i ka manawa kaomi ma ka density, porosity a me ka ikaika flexural o nā laʻana. Ua kālailai ʻia ka pilina ma waena o ka microstructure a me ka ikaika flexural o nā laʻana graphite flake kūlohelohe. ʻElua mau ʻōnaehana, boric acid - urea a me tetraethyl silicate - acetone - hydrochloric acid, i koho ʻia e aʻo a kūkākūkā i nā waiwai antioxidant a me nā ʻano hana o ka pauka graphite kūlohelohe a me nā laʻana electrode graphite kūlohelohe ma mua a ma hope o ka mālama ʻana i ka antioxidant. ʻO nā ʻike noiʻi nui a me nā hopena penei: Ua aʻo ʻia ka hana hana o ka graphite flake kūlohelohe a me ka mana o nā kūlana hana ma ka microstructure a me nā waiwai. Hōʻike nā hopena ʻo ke kiʻekiʻe o ke kaomi hana o ka hāpana graphite flake kūlohelohe, ʻoi aku ka nui o ka density a me ka ikaika flexural o ka hāpana, ʻoiai ʻoi aku ka liʻiliʻi o ka porosity o ka hāpana. ʻAʻohe hopena nui o ka manawa paʻa i ka density o ka hāpana. Ke ʻoi aku ma mua o 5 mau minuke, ʻoi aku ka maikaʻi o ke ʻano o ka hāpana. Hōʻike ka ikaika flexural i ka anisotropy maopopo, a ʻo ka awelika o nā ikaika flexural ma nā ʻaoʻao like ʻole he 5.95MPa, 9.68MPa, a me 12.70MPa. Pili loa ka anisotropy o ka ikaika flexural i ka microstructure o ka graphite.

Ua aʻo ʻia nā waiwai antioxidant o ka ʻōnaehana boron-nitrogen i hoʻomākaukau ʻia e ke ʻano hoʻonā a me ke ʻano sol a me ka pauka graphite flake kūlohelohe i uhi ʻia me ka silica sol ma mua a ma hope. Hōʻike nā hopena i ka piʻi ʻana o ka nui o nā impregnations, piʻi ka nui o ka silica sol a me ka ʻōnaehana boron-nitrogen i uhi ʻia ma luna o ka pauka graphite, a ʻoi aku ka maikaʻi o ka waiwai antioxidant. ʻO ka mahana oxidation mua o ka graphite flake kūlohelohe he 883K, a ʻo ka helu pohō kaumaha oxidation ma 923K he 407.6mg/g/h. Ua hoʻomoʻa ʻia ka pauka graphite i ʻeiwa mau manawa i loko o ka ʻōnaehana boric acid - urea a me ka ʻōnaehana ethyl silicate - ethanol - hydrochloric acid. Ma hope o ka mālama wela no 1 hola ma lalo o ka lewa o 1273K a me N2, ʻo ka helu pohō kaumaha oxidation o ka graphite flake kūlohelohe ma 923K he 47.9 mg/g/h a me 206.1mg/g/h. Ma hope o ka mālama wela ʻana no 1 hola ma nā lewa N2 o 1973K a me 1723K, ʻo nā helu pohō kaumaha oxidation o ka graphite flake kūlohelohe ma 923K he 3.0mg /g/h a me 42.0mg/g/h; Hiki i nā ʻōnaehana ʻelua ke hōʻemi i ka helu pohō kaumaha oxidation o ka graphite flake kūlohelohe, akā ʻoi aku ka maikaʻi o ka hopena antioxidant o ka ʻōnaehana boric acid - urea ma mua o ka ʻōnaehana ethyl silicate - ethanol - hydrochloric acid.

Hoʻohana nui ʻia nā electrodes graphite i nā ʻoihana nui e like me ka hana kila umu uila, ka hana ʻana i ka phosphorus i loko o nā umu ore, ka hoʻoheheʻe uila o ke one magnesia, ka hoʻomākaukau ʻana i ka hoʻoheheʻe uila o nā mea refractory, ka electrolysis alumini, a me ka hana ʻana i ka phosphorus ʻoihana, silicon, a me ka calcium carbide. Ua māhele ʻia nā electrodes graphite i ʻelua ʻano: nā electrodes graphite maoli a me nā electrodes graphite artificial. Ke hoʻohālikelike ʻia me nā electrodes graphite artificial, ʻaʻole pono nā electrodes graphite maoli i kahi kaʻina hana kemika graphite. ʻO ka hopena, ua emi nui ka pōʻaiapuni hana o nā electrodes graphite maoli, ua emi nui ka hoʻohana ʻana i ka ikehu a me ka haumia, a ua hoʻohaʻahaʻa nui ʻia nā kumukūʻai. Loaʻa iā lākou nā pono kumukūʻai maopopo a me nā pono waiwai, ʻo ia kekahi o nā kumu nui no ka hoʻomohala ʻana i nā electrodes graphite maoli.

Eia kekahi, ʻo nā electrodes graphite kūlohelohe he mau huahana i hana hohonu ʻia me ka waiwai nui o ka graphite kūlohelohe a he waiwai nui ko lākou no ka hoʻomohala ʻana a me ka hoʻohana ʻana. Eia nō naʻe, ʻoi aku ka haʻahaʻa o ka hana hoʻokumu ʻana, ke kūʻē ʻana i ka oxidation a me nā waiwai mechanical o nā electrodes graphite kūlohelohe i kēia manawa ma mua o nā electrodes graphite artificial, ʻo ia ke keʻakeʻa nui i ko lākou hoʻomohala ʻana. No laila, ʻo ka lanakila ʻana i kēia mau keʻakeʻa ke kī i ka hoʻomohala ʻana i ka hoʻohana ʻana o nā electrodes graphite kūlohelohe.

Ua aʻo ʻia nā waiwai antioxidant o ka ʻōnaehana boron-nitrogen i hoʻomākaukau ʻia e ke ʻano hoʻonā a me ke ʻano sol a me nā poloka graphite flake kūlohelohe i uhi ʻia me ka silica sol ma mua a ma hope. Hōʻike nā hopena e lilo ana ka waiwai antioxidant o nā poloka graphite kūlohelohe i uhi ʻia me ka silica sol i mea ʻino i ka piʻi ʻana o ka nui o nā impregnations. ʻOi aku ka maikaʻi o nā waiwai antioxidant o nā poloka graphite kūlohelohe i uhi ʻia me ka ʻōnaehana boron-nitrogen i ka piʻi ʻana o ka nui o nā impregnations. ʻO nā helu pohō kaumaha oxidation o nā poloka graphite kūlohelohe ma 923K a me 1273K he 122.432mg/g/h a me 191.214mg/g/h, kēlā me kēia. Ua hoʻopiha ʻia nā poloka graphite kūlohelohe i ʻeiwa mau manawa i loko o ka ʻōnaehana boric acid - urea a me ka ʻōnaehana ethyl silicate - ethanol - hydrochloric acid. Ma hope o ka mālama wela no 1 hola i ka lewa o 1273K a me N2, ʻo nā helu pohō kaumaha oxidation ma 923K he 20.477mg/g/h a me 28.753mg/g/h, kēlā me kēia. Ma 1273K, ʻo 37.064mg/g/h a me 54.398mg/g/h kēlā me kēia; Ma hope o ka mālama ʻana ma 1973K a me 1723K kēlā me kēia, ʻo nā helu pohō kaumaha oxidation o nā poloka graphite kūlohelohe ma 923K he 8.182 mg/g/h a me 31.347mg/g/h kēlā me kēia; Ma 1273K, ʻo 126.729mg/g/h a me 169.978mg/g/h kēlā me kēia; Hiki i nā ʻōnaehana ʻelua ke hōʻemi nui i ka helu pohō kaumaha oxidation o nā poloka graphite kūlohelohe. Pēlā nō, ʻoi aku ka maikaʻi o ka hopena antioxidant o ka ʻōnaehana boric acid - urea ma mua o ka ʻōnaehana ethyl silicate - ethanol - hydrochloric acid.