He aha nā kīʻaha i hana ʻia?

ʻO ka haku mele ʻana okīʻahanā mea waiwai a me kā lākou mea nui i ka metallurgy

ʻO Crucible kahi mea hana pono i ka ʻoihana metallurgical, i hoʻohana ʻia no ka hoʻopaʻa ʻana a me ka hoʻomehana ʻana i nā metala like ʻole a me nā alloys. Eia nō naʻe, pili pono ka hana ʻana o ka crucible i kāna hana a me ke ola ma nā wahi wela kiʻekiʻe. No laila, he mea koʻikoʻi ka hoʻomaopopo ʻana i ka haku mele ʻana o ka crucible i ke koho ʻana i ka crucible kūpono no kahi noi metallurgical. E ʻimi kēia ʻatikala i nā mea waiwai nui o nā crucibles a me ko lākou koʻikoʻi i nā noi metallurgical.

1.Graphite crucible
ʻO ka graphite crucible kekahi o nā ʻano maʻamau. Ma muli o kona kūpaʻa kiʻekiʻe kiʻekiʻe a me ka paʻa kemika, hoʻohana nui ʻia i ka hoʻoheheʻe ʻana i nā metala non-ferrous e like me ke aluminika, ke keleawe, a me ke gula. ʻO ka mea nui o ka graphite crucible he kalapona, nona ka conductivity thermal maikaʻi loa, e ʻae i ka metala e wela koke a me ka like, a laila e hōʻemi ana i ka manawa hoʻoheheʻe. Eia kekahi, hiki i ka graphite crucible ke kū'ē i ka corrosion maikaʻi a hiki ke pale i ka hoʻoheheʻe ʻana o ka hapa nui o nā mea momona a me ka alkaline.

2.Silicon carbide crucible
Makemake ʻia nā crucibles Silicon carbide e ka ʻoihana metallurgical no ko lākou paʻakikī maikaʻi loa a me ka pale ʻana i ka oxidation. He mea paʻakikī loa ka Silicon carbide e hiki ke kū i nā wela kiʻekiʻe loa me ka ʻole o ka deformation. Ke hoʻohālikelike ʻia me nā crucibles graphite, ʻoi aku ka lōʻihi o ka lawelawe ʻana o nā crucibles silicon carbide a kūpono loa no ka hoʻoheheʻe ʻana i ka hao, ke kila a me nā metala wela kiʻekiʻe. Eia kekahi, ʻoi aku ka maikaʻi o ka mea carbide silicon, e hōʻemi ana i ka pōʻino o ka crucible ma muli o nā loli wikiwiki.

3. ʻO ka ipu hao
Hana nui ʻia nā crucibles seramika e like me ka alumina a me ka zirconia. Hōʻike kēia mau crucibles i ka inertness kemika maikaʻi loa a kūpono no ka hoʻoili ʻana i nā metala a me nā mea hoʻoheheʻe ʻia i nā mea ʻē aʻe. ʻO ka helu hoʻoheheʻe kiʻekiʻe o nā crucibles seramika e hiki ai iā lākou ke noho paʻa ma lalo o nā kūlana wela ultra-kiʻekiʻe a hoʻohana nui ʻia i nā laboratories a me kekahi mau noi ʻoihana kūikawā. Eia nō naʻe, palupalu nā kīʻaha ceramic a pono e mālama pono i ka wā e hoʻohana ai e pale i ka haki ʻana ma muli o ka hopena mechanical.

4. Pahu hao hao
Hoʻohana mau ʻia nā kīʻaha kila i nā hana hoʻoheheʻe metala nui, e like me nā mea hoʻokumu. Hana ʻia nā kīʻaha kila me nā mea kila wela a loaʻa ka ikaika mechanical maikaʻi a me ke kūpaʻa wela kiʻekiʻe. ʻOiai ʻaʻole like ka thermally conductive o nā crucibles kila e like me nā crucibles graphite, hiki iā lākou ke pale i ka haʻalulu kino nui, e kūpono ai no nā hana hoʻoheheʻe e koi pinepine ai i ka hoʻouka ʻana a me ka wehe ʻana a i ʻole nā ​​​​hoʻololi.

5. Nā mea ʻē aʻe
Ma waho aʻe o nā mea crucible maʻamau i ʻōlelo ʻia ma luna, aia kekahi mau mea kūikawā i hoʻohana ʻia no nā kumu kikoʻī. No ka laʻana, hoʻohana pinepine ʻia nā crucibles tungsten i nā hoʻokolohua kiʻekiʻe ma muli o ko lākou helu hoʻoheheʻe kiʻekiʻe a me ka pale ʻana i ka corrosion. Hoʻohana ʻia nā kīʻaha Titanium no ka honi ʻana i nā alloys kūikawā no ka mea ʻaʻole lākou e hana me nā metala he nui.

I ka hopena
ʻAʻole hoʻoholo wale ka ʻano mea o ka crucible i kona kūpaʻa a me ka lōʻihi i nā wahi wela kiʻekiʻe, akā pili pū kekahi i ka pono a me ka palekana o ke kaʻina hoʻoheheʻe. No laila, i ke koho ʻana i kahi crucible, pono e noʻonoʻo ʻia nā waiwai kemika o ka mea, thermal conductivity, ikaika mechanical a me ke ola lawelawe e pili ana i nā koi noi kikoʻī. Hiki i nā crucibles o nā mea like ʻole ke hoʻololi i ka ʻoihana metallurgical, e hāʻawi ana i ka hōʻoia hilinaʻi no ka hana pono a me ka palekana.