Nā Pono Kū'ē Kū'ē o ka Graphite Crucibles ma kaʻoihana Metallurgical

Hoʻolauna

I ka ʻoihana metallurgical, ʻo ka hoʻohana ʻana i nā mea kiʻekiʻe kiʻekiʻe ka mea nui e hōʻoia i ka hana kūpono a hilinaʻi o nā metala a me nā mea hao. Ma waena o nā mea like ʻole i hoʻohana ʻia, ua loaʻa i nā crucibles graphite ke kaulana nui ma muli o kā lākou mau waiwai kūʻē i ka corrosion. ʻIke ʻia kēia ʻatikala i nā waiwai pale ʻana o ka corrosiongraphite cruciblesa me kā lākou kuleana koʻikoʻi i nā kaʻina hana metallurgical.

Pale ʻino oNā Kuʻi Kipi

ʻO ka graphite, kahi ʻano kalapona, hōʻike i ke kūʻē kūʻokoʻa i ka hoʻouka ʻana i nā kemika a me nā wela kiʻekiʻe, e lilo ia i mea kūpono no nā crucibles i ka ʻoihana metallurgical. ʻO ke kūpaʻa ʻino o nā crucibles graphite e pili ana i nā waiwai kūʻokoʻa o ka graphite ponoʻī. He ʻano hana ʻole ka graphite, ka mea e pale aku ai i ka hana ʻana me ka hapa nui o nā waikawa, alkalis, a me nā mea ʻino ʻē aʻe i loaʻa i ka wā o ka hoʻoheheʻe metala a me ka hana ʻana.

▪ Kūʻē ʻAka:

ʻO nā kīʻaha graphitehōʻike i ke kūpaʻa maikaʻi i nā kaiapuni acidic. Hiki iā lākou ke pale i nā hopena corrosive o nā waikawa e like me ka sulfuric acid, hydrochloric acid, a me ka waikawa nitric. He mea koʻikoʻi kēia ʻano i nā kaʻina hana e pili ana i ka mālama ʻana i nā ʻakika, e like me ka hana ʻana o kekahi mau metala a me nā ʻokikene metala.

▪ Palekana Alkali:

Ma waho aʻe o nā waikawa,graphite crucibleshōʻike kūʻē i ka alkali. Hoʻohana mau ʻia nā mea alkaline, e like me ka sodium hydroxide a me ka potassium hydroxide, i nā noi metallurgical like ʻole.ʻO nā kīʻaha graphiteʻAʻole i hoʻopilikia ʻia e kēia mau alkali, e hōʻoia ana i ka kūpaʻa a me ka lōʻihi o ka crucible i ka wā o ia mau kaʻina.

▪ Kū'ē i ka Oxidation:

Loaʻa i ka graphite ke kūpaʻa hoʻokahe maikaʻi loa, ʻoiai ma nā wela kiʻekiʻe. Ke hoʻokau ʻia i ka wela loa, hana ka graphite i kahi papa pale o ka graphite oxide ma luna o kona ʻili, kahi mea e pale aku ai i ka hoʻoneʻe hou ʻana. ʻOi aku ka maikaʻi o kēia waiwai i nā noi kahi e ʻike ʻia ai nā crucibles i nā ea hoʻoneʻe, e like me ka hoʻoheheʻe ʻana a me ka hoʻomaʻemaʻe ʻana i nā metala.

Kū'ē Kū'ē Thermal: ʻO kekahi mea nui ographite cruciblesʻO ko lākou kū'ēʻana i ka haʻalulu wela. He kiʻekiʻe ka hoʻoili wela o ka graphite a me ke koena haʻahaʻa o ka hoʻonui wela, hiki iā ia ke pale i nā loli wikiwiki me ka ʻole o ka haki ʻana a me ka haki ʻole. He mea koʻikoʻi kēia kūʻē ʻana i ka haʻalulu wela i nā kaʻina hana e pili ana i ka hoʻomehana ʻana a me ka hoʻoilo ʻana, e like me ka hoʻolei metala a me ka hana alloy.

ʻO nā pono o ka Graphite Crucibles

Hāʻawi nā waiwai pale corrosion o nā crucibles graphite i nā pono i ka ʻoihana metallurgical:

▪ Ola lōʻihi:

ʻOi aku ka lōʻihi o ke ola o nā crucibles graphite e like me nā crucibles kuʻuna i hana ʻia me nā mea e like me ka pālolo a i ʻole ka ceramic ma muli o ko lākou kūpaʻa kiʻekiʻe i ka corrosion a me ka haʻalulu wela.

▪ Hoʻomaikaʻi ʻia ka maikaʻi o ka huahana:

ʻO ke ʻano non-reactive o nā crucibles graphite e hōʻoiaʻiʻo i ka hoʻoheheʻe ʻia a i ʻole nā ​​​​mea hoʻoheheʻe ʻole ʻia, e alakaʻi ana i nā huahana hopena kiʻekiʻe.

▪ Hoʻoikaika ikaika:

Loaʻa i nā crucibles graphite maikaʻi ka wela wela, hiki ke hoʻololi i ka wela, ka hāʻawi like ʻana i ka mahana, a me ka hoʻemi ʻana i ka ikehu i ka wā o ka hoʻoheheʻe ʻana.

Uku Uku: ʻOiai ʻoi aku ka nui o ke kumukūʻai ma mua o nā mea hana crucible ʻē aʻe, ʻoi aku ka lōʻihi o ke ola o nā crucibles graphite a me ka hana ʻoi aku ka maikaʻi o ke kumu kūʻai no ka holo lōʻihi.

Ka hopena

He kuleana koʻikoʻi ka graphite crucibles i ka ʻoihana metallurgical, e hāʻawi ana i nā waiwai kūʻē i ka corrosion kūʻokoʻa, ke kūpaʻa haʻalulu wela, a me ke kūpaʻa ʻana. ʻO ko lākou hiki ke kū i nā kūlana koʻikoʻi i loaʻa i ka wā o ka hoʻoheheʻe metala a me ka hana ʻana i ka alloy e pono ai lākou i nā kaʻina hana metallurgical. Ma ke koho ʻana i nā crucibles graphite, hiki i nā mea hana ke hōʻoia i ka hoʻomaikaʻi ʻana i ka maikaʻi o ka huahana, ka lōʻihi o ke ola crucible, ka ikaika o ka ikehu, a me ka maikaʻi o ke kumukūʻai. Ke hoʻomau nei ka ʻoihana metallurgical i mua, e noho mau nā crucibles graphite i mea hilinaʻi a koʻikoʻi i ka ʻimi ʻana i ka hana metala maikaʻi a kiʻekiʻe.