ʻO nā crucibles nā mea koʻikoʻi o nā mea kemika a lilo i ipu no ka hoʻoheheʻe ʻana a me ka hoʻomaʻemaʻe ʻana i nā wai metala, a me ka hoʻomehana ʻana a me ka hana ʻana i nā huila paʻa-wai.Hoʻokumu lākou i ke kumu no ka hōʻoia ʻana i nā hopena kemika maʻemaʻe.
Hiki ke hoʻokaʻawale ʻia nā crucibles i ʻekolu mau ʻāpana:graphite crucibles, ipu lepo, a me na ipu hao.
Hana ʻia nā kīʻaha graphite mai ka graphite crystalline maoli, e mālama ana i nā ʻano kino like ʻole a me nā waiwai kemika o ka graphite maoli.Loaʻa iā lākou ka conductivity thermal maikaʻi a me ke kūpaʻa wela kiʻekiʻe.I ka hoʻohana ʻana i ka wela kiʻekiʻe, hōʻike lākou i nā coefficient hoʻonui haʻahaʻa haʻahaʻa, e hoʻopaʻa iā lākou i ka hoʻomehana wikiwiki a me ka hoʻoilo.Loaʻa i nā crucibles graphite ke kūpaʻa ʻino i ka ʻakika a me ka alkaline a hōʻike i ke kūpaʻa kemika maikaʻi loa.
Ma muli o kēia mau hiʻohiʻona kiʻekiʻe, hoʻohana nui ʻia nā crucibles graphite i nā ʻoihana e like me ka metallurgy, casting, machinery, and chemical engineering.Loaʻa iā lākou ka hoʻohana nui ʻana i ka hoʻoheheʻe ʻana i nā mea kila kila a me ka hoʻoheheʻe ʻana i nā metala non-ferrous a me kā lākou mau ala, e hāʻawi ana i nā pono ʻenehana a me ka hoʻokele waiwai.
ʻO nā kīʻaha Silicon Carbide:
ʻO nā kīʻaha silikoni carbide he kīʻaha kīʻaha kīʻaha.Ke hoʻomāhana ʻia nā mea paʻa i nā wela kiʻekiʻe, pono nā crucibles no ka mea hiki iā lākou ke pale i nā wela kiʻekiʻe ke hoʻohālikelike ʻia me nā mea aniani.ʻAʻole hoʻopiha piha ʻia nā crucibles i ka wā e hoʻohana ai i mea e pale ai i ka mea wela mai ka kahe ʻana, e ʻae ana i ka ea e komo manuahi a hoʻomaʻamaʻa i nā hopena oxidation.Ma muli o ko lākou kumu liʻiliʻi, ua kau ʻia nā crucibles ma luna o kahi triangle pālolo no ka hoʻomehana pololei.Hiki iā lākou ke hoʻonohonoho pololei a i ʻole ma kahi kihi ma kahi tripod hao, ma muli o nā koi hoʻokolohua.Ma hope o ka hoʻomehana ʻana, ʻaʻole pono e kau koke ʻia nā crucibles ma luna o kahi ʻili metala anuanu e pale aku i ka hoʻolili wikiwiki ʻana a me ka haki ʻana.Pēlā nō, ʻaʻole pono e kau pololei ʻia ma luna o ka ʻili lāʻau e pale aku ai i ka wela a i ʻole ke ahi.ʻO ke ala kūpono, ʻo ia ka ʻae ʻana i nā crucibles e maʻalili maoli ma luna o ka tripod hao a i ʻole e kau iā lākou ma luna o ka ʻupena asbestos no ka hoʻomaha mālie.Pono e hoʻohana ʻia nā ʻōpala crucible no ka lawelawe ʻana.
Platinum Crucibles:
ʻO Platinum crucibles, i hana ʻia me ka platinum metala, e lawelawe ʻia ma ke ʻano he ʻāpana no nā mea hoʻokalakupua wela ʻokoʻa a hoʻohana ʻia no ka hoʻomehana ʻana i nā mea non-metallic, e like me ka hana ʻana i ke aniani fiber a me ke kaha kiʻi aniani.
ʻAʻole pono lākou e hui pū me:
ʻO nā pūhui paʻa e like me K2O, Na2O, KNO3, NaNO3, KCN, NaCN, Na2O2, Ba(OH)2, LiOH, etc.
ʻO Aqua regia, nā mea halogen, a i ʻole nā mea hiki ke hana i nā halogen.
ʻO nā hui o nā metala hiki ke hoʻemi maʻalahi a me nā metala ponoʻī.
ʻO nā silicates i loko o ke kalapona, phosphorus, arsenic, sulfur, a me kā lākou mau pūhui.
ʻO Nickel Crucibles:
ʻO ka helu hoʻoheheʻe o ka nickel he 1455 degere Celsius, a ʻo ka mahana o ka hāpana i loko o ka nickel crucible ʻaʻole pono e ʻoi aku ma mua o 700 degere Celsius e pale aku i ka oxidation ma nā wela kiʻekiʻe.
Kūleʻa loa ʻo Nickel crucibles i nā mea alkaline a me ka corrosion, no laila kūpono lākou no ka hoʻoheheʻe ʻana i nā mea hao hao, slag, pālolo, nā mea refractory, a me nā mea hou aku.Hiki ke hoʻohana ʻia nā kīʻaha nikela me nā kahe alkaline e like me NaOH, Na2O2, NaCO3, a me nā mea i loaʻa iā KNO3, akā, ʻaʻole pono e hoʻohana ʻia me KHSO4, NaHSO4, K2S2O7, a i ʻole Na2S2O7 a me nā sulfide fluxes me ka sulfur.ʻO ka hoʻoheheʻe ʻana i nā paʻakai o ka aluminika, ka zinc, ke kēpau, ka tin, a me ka mercury hiki ke hoʻoheheʻe i nā crucibles nickel.ʻAʻole pono e hoʻohana ʻia nā kīʻaha nikela no ka puhi ʻana i nā wai, ʻaʻole pono e hoʻoheheʻe ʻia ka borax i loko o ia mau mea.
Loaʻa pinepine nā chromium i loko o nā kīʻaha nikela, no laila pono e mālama ʻia ke hoʻopau ʻia ke kau.
Ka manawa hoʻouna: Jun-18-2023