ʻIkepili Ka Graphite Crucible

Nānā nui
Ka graphite cruciblehana ʻia mai ka graphite flake maoli ma ke ʻano he kumu kumu, a ua hana ʻia me ka pālolo refractory plastic a i ʻole carbon e like me ka mea hoʻopili. Loaʻa iā ia nā hiʻohiʻona o ke kūpaʻa wela kiʻekiʻe, ka conductivity thermal ikaika, ke kūpaʻa corrosion maikaʻi, a me ke ola lawelawe lōʻihi. I ka hoʻohana ʻana i ka wela kiʻekiʻe, he liʻiliʻi ka coefficient o ka hoʻonui ʻana i ka wela, a loaʻa iā ia kekahi hana kūʻē i ke koʻikoʻi no ka hoʻoilo wikiwiki a me ka wela. Loaʻa iā ia ke kūpaʻa corrosion ikaika i nā hopena acidic a me ka alkaline, ke kūpaʻa kemika maikaʻi loa, a ʻaʻole komo i nā hopena kemika i ka wā o ka hoʻoheheʻe ʻana. ʻO ka paia o loko o ka graphite crucible he maʻalahi, a ʻaʻole maʻalahi ka hoʻoheheʻe ʻana i ka wai metala a pili i ka paia o loko o ka crucible, e hana ana ka wai metala i ka flowability maikaʻi a me ka hiki ke hoʻolei, kūpono no ka hoʻolei ʻana a me ka hana ʻana i nā ʻano like ʻole. Ma muli o nā hiʻohiʻona maikaʻi loa i luna, hoʻohana nui ʻia nā crucibles graphite i ka hoʻoheheʻe ʻana i ke kila kila kila a me nā metala non-ferrous a me kā lākou mau ala.

ʻAno
Hoʻohana nui ʻia nā crucibles graphite no ka hoʻoheheʻe ʻana i nā mea metala, i hoʻokaʻawale ʻia i ʻelua ʻano: graphite maoli a me ka graphite artificial.
1) graphite maoli
Hana ʻia ia me ka graphite flake maoli e like me ka mea nui, me ka hoʻohui ʻana i ka pālolo a me nā mea ʻē aʻe refractory. Kapa ʻia ʻo ia he pālolo graphite crucible, aʻo ka carbon binder type crucible i hana ʻia me ka asphalt ka mea hoʻopaʻa. Hana ʻia ʻo ia e ka ikaika sintering o ka pālolo a ua kapa ʻia ʻo ia ʻo ka hui hoʻopaʻa palolo Hui. ʻO ka mea mua he ʻoi aku ka ikaika a me ke kūpaʻa haʻalulu wela. Hoʻohana ʻia ia no ka hoʻoheheʻe ʻana i ke kila, ke keleawe, nā ʻāpana keleawe, a me nā metala non-ferrous ʻē aʻe, me nā ʻano nui a me nā mana hoʻoheheʻe mai 250g a 500kg.
ʻO kēia ʻano kīʻaha me nā mea pono e like me ka spoon skimming, poʻi, apo hui, kākoʻo crucible, a me ke koʻokoʻo hoʻoulu.
2) graphite hana
Aia ma kahi o 50% mau minelala pālolo ka mea maoli graphite crucibles i ʻōlelo ʻia ma luna, aʻo nā haumia (maʻiʻo lehu) i loko o nā crucibles graphite artificial ʻoi aku ka liʻiliʻi ma mua o 1%, i hoʻohana ʻia no ka hoʻomaʻemaʻe ʻana i nā metala maʻemaʻe kiʻekiʻe. Aia kekahi graphite maʻemaʻe kiʻekiʻe i hoʻomaʻemaʻe kūikawā (ka lehu maʻi<20ppm). Hoʻohana pinepine ʻia nā pahu graphite artificial e hoʻoheheʻe i nā metala makamae, nā metala maʻemaʻe kiʻekiʻe, a i ʻole nā ​​metala hoʻoheheʻe kiʻekiʻe a me nā oxides. Hiki ke hoʻohana ʻia ma ke ʻano he crucible no ka loiloi kinoea ma ke kila.

Kaʻina hana hana
Hiki ke hoʻokaʻawale ʻia ke kaʻina hana o nā crucibles graphite i ʻekolu mau ʻano: ka hana lima, rotational molding, a me ka compression molding. ʻO ka maikaʻi o ka crucible pili loa i ke kaʻina hana hoʻoheheʻe. ʻO ke ʻano hana e hoʻoholo ai i ke ʻano, density, porosity, a me ka ikaika mechanical o ke kino crucible.
ʻAʻole hiki ke hana ʻia nā crucibles i hoʻoheheʻe ʻia e ka lima no nā kumu kūikawā me ka hoʻohana ʻana i nā ʻano hana hoʻoheheʻe ʻana a i ʻole ka hoʻopili ʻana. Hiki ke hana ʻia kekahi mau kīʻaha kūikawā ma ka hoʻohui ʻana i ka hoʻoheheʻe ʻana a me ka hana lima.
ʻO ka hoʻoheheʻe ʻana i ka Rotary kahi kaʻina e hiki ai i ka mīkini wili ke hoʻokuʻu i ka ʻōpala e hana a hoʻohana i ka pahi kūloko e hoʻopau i ka pālolo e hoʻopiha ai i ka hoʻoheheʻe crucible.
ʻO ka hoʻoheheʻe ʻana ka hoʻohana ʻana i nā mea paʻi e like me ke kaomi ʻaila, ke kaomi wai, a i ʻole ke kaomi ea e like me ka ikehu kinetic, me ka hoʻohana ʻana i nā mole kila e like me nā mea palaki no ka hana crucible. Ke hoʻohālikelike ʻia me ke ʻano o ka rotary molding, loaʻa iā ia nā mea maikaʻi o ke kaʻina hana maʻalahi, pōkole hana pōkole, kiʻekiʻe a me ka maikaʻi, haʻahaʻa haʻahaʻa haʻahaʻa, haʻahaʻa haʻahaʻa haʻahaʻa, haʻahaʻa crucible shrinkage a porosity, kiʻekiʻe huahana kiʻekiʻe a me ka nui.

Mālama a mālama
Pono e pale ʻia nā crucibles graphite mai ka makū. Makaʻu loa nā crucibles graphite i ka makū, hiki ke loaʻa ka hopena nui i ka maikaʻi. Inā hoʻohana ʻia me kahi kīʻaha wai, hiki iā ia ke hana i ka māhā, ka pohā, ka hāʻule ʻana o ka lihi, a me ka hāʻule ʻana o lalo, e hopena ai i ka nalowale o ka metala hoʻoheheʻe ʻia a me nā pōʻino pili i ka hana. No laila, i ka mālama ʻana a me ka hoʻohana ʻana i nā crucibles graphite, pono e uku ʻia i ka pale ʻana i ka wai.
ʻO ka hale kūʻai no ka mālama ʻana i nā crucibles graphite e maloʻo a hoʻoheheʻe ʻia, a mālama ʻia ka mahana ma waena o 5 ℃ a me 25 ℃, me kahi haʻahaʻa o 50-60%. ʻAʻole pono e mālama ʻia nā crucibles ma ka lepo pōhaku lepo a i ʻole ka lepo sima e pale aku ai i ka makū. Pono e kau ʻia ka pahu graphite nui ma luna o ke kumu lāʻau, ʻoi aku ka 25-30cm ma luna o ka honua; Hoʻopili ʻia i loko o nā pahu lāʻau, nā hīnaʻi wicker, a i ʻole nā ​​ʻeke mauʻu, pono e waiho ʻia nā mea moe ma lalo o nā pallets, ʻaʻole i emi iho ma mua o 20cm ma luna o ka honua. ʻOi aku ka maikaʻi o ka hoʻokomo ʻana i kahi papa o ka manaʻo ma luna o nā mea moe. I loko o kekahi manawa o ka hoʻopaʻa ʻana, pono e hoʻopaʻa i ka papa haʻahaʻa i lalo, ʻoi aku ka maikaʻi me nā papa luna a me lalo e kū pono ana kekahi i kekahi. ʻAʻole pono e lōʻihi ka wā ma waena o ka hoʻopaʻa ʻana a me ka hoʻopaʻa ʻana. ʻO ka maʻamau, pono e hana ʻia ka hoʻopaʻa ʻana i hoʻokahi manawa i kēlā me kēia ʻelua mahina. Inā ʻaʻole kiʻekiʻe ka makū o ka honua, hiki ke hana ʻia ka hoʻopaʻa ʻana i hoʻokahi manawa i kēlā me kēia ʻekolu mahina. I ka pōkole, hiki i ka hoʻopaʻa pinepine ʻana ke loaʻa ka hopena maikaʻi i ka moisture-proof.