One Mullite
Oneone Mullitehe ʻano mea aluminosilicate refractory i hoʻohana nui ʻia i ka ʻoihana foundry.
ʻO ka Hoʻohui Kemika Nui:
ʻO nā ʻāpana kemika mua o ke one mullite ʻo ia ka Aluminum Oxide (Al₂O₃) a me Silicon Dioxide (SiO₂). ʻO nā pae hoʻohui kemika maʻamau: 42% ≤ Al₂O₃ ≤ 47% a me 51% ≤ SiO₂ ≤ 53%. Loaʻa pū kekahi i nā liʻiliʻi o ka Iron Oxide (Fe₂O₃), Alkali Metal Oxides (Na₂O+K₂O), a me nā mea trace ʻē aʻe.
Kaʻina Hana:
Hoʻohana pinepine ʻia ke one Mullite me ka hoʻohana ʻana i nā minelala waiwai i ka aluminosilicate, e like me ke kaolin, ka pālolo paʻakikī, a i ʻole muscovite. ʻO ke kaʻina hana e pili ana i ka wili ʻana i nā mea maka, ka hoʻohui ʻana iā lākou me nā mea hoʻohui, a me ke kaomi ʻana iā lākou i ke ʻano. A laila hoʻoheheʻe ʻia kēia mau ʻano i loko o ka umu wela kiʻekiʻe ma nā mahana ma waena o 1300°C a me 1550°C. Ma hope o ka calcination, hele ka huahana i ka wili ʻana, ka nānā ʻana, ka hoʻokaʻawale magnetic e wehe i ka hao, a me nā kaʻina hana ʻē aʻe e loaʻa ai nā huahana one mullite o nā nui ʻāpana like ʻole.
Nā kikoʻī o ka nui o ka ʻāpana:
Loaʻa ke one Mullite i nā ʻano nui like ʻole o nā ʻāpana. ʻO kā mākou lako nui: 8-16 mesh, 16-30 mesh, 30-60 mesh, 60-80 mesh, a me 80-120 mesh. Eia kekahi, hāʻawi mākou i nā ʻano maikaʻi i ʻike ʻia ʻo ka pauka mullite, e like me 200 mesh a me 300 mesh.
Nā ʻano hana:
Ka Paʻakikī Kiʻekiʻe:Me ka paʻakikī o ka hoʻoheheʻe ʻana ma kahi o 1750°C, kū pono ia i nā mahana kiʻekiʻe o ka metala i hoʻoheheʻe ʻia i ke kaʻina hana hoʻoheheʻe ʻana, e pale ana i ka pūpū hoʻoheheʻe mai ka hōʻino ʻia.
Kūlana Paʻa Wela Maikaʻi Loa:Mālama ke one Mullite i ke kūpaʻa o ka nui ke hoʻololi ʻia ka mahana. Kūpaʻa ia i ka hoʻonui ʻana a i ʻole ka ʻūmiʻi ʻana o ka wela, e hōʻoiaʻiʻo ana i ka pololei o nā mea i hoʻoheheʻe ʻia.
Waiwai Shakeout Maʻalahi:Ma hope o ke kāwili ʻana, hiki ke wehe maʻalahi ʻia ke one mullite (shakeout) mai nā kāwili ʻana. Hoʻemi kēia i ka pono no ka hana hoʻopau ma hope a hoʻomaikaʻi i ka pono o ka hana ʻana.
Kūlana Kiʻekiʻe o ka Hoʻolei ʻana:ʻO ka hoʻohana ʻana i ke one mullite ma ke ʻano he mea pūpū e hopena i ka hoʻoheheʻe ʻana me kahi ʻili laumania. Hoʻēmi ia i nā hemahema hoʻolei e like me nā lua one a me nā lua pahū, a laila e hoʻonui ai i ka maikaʻi holoʻokoʻa o nā mea i hoʻolei ʻia.
| Nā kikoʻī | Papa ʻaina ahiahi | Papa 1 | Papa 2 |
| Al2O3 | 44%-45% | 43%-45% | 43%-50% |
| SiO2 | 50%-53% | 50%-54% | 47%-53% |
| Fe2O3 | ≤1.0% | ≤1.5% | ≤2.1% |
| K2O+Na2O | ≤0.5% | ≤0.6% | ≤0.8% |
| CaO | ≤0.4% | ≤0.5% | ≤0.5% |
| TiO2 | ≤0.3% | ≤0.7% | ≤0.3% |
| Soda Xaustic | ≤0.5% | ≤0.5% | ≤0.7% |
| Ka nui o ka nui | ≥2.5g/cm3 | ≥2.5g/cm3 | ≥2.45g/cm3 |
ʻO ke kumu o ka hoʻolei pololei ʻana, ʻo ia ka hana ʻana i nā pūpū mold (ke kaʻina hana o ka uhi ʻana i ke ʻano wax me nā papa he nui o ka mea refractory e hana i kahi pūpū waho. Ma hope o ka heheʻe ʻana o ke ʻano wax, hana ʻia kahi lua no ka ninini ʻana i ka metala i hoʻoheheʻe ʻia). Hoʻohana nui ʻia ke one Mullite ma ke ʻano he hui refractory i loko o ka pūpū mold a hoʻopili ʻia i nā papa like ʻole o ka pūpū, penei:
1. Pūpū ʻIli (Hoʻoholo pololei i ka maikaʻi o ka ʻili o ka hoʻolei ʻana)
Hana:Aia ka papa ʻili i ka pilina pololei me ka mea i hoʻoheheʻe ʻia a pono e hōʻoia i kahi ʻili laumania (e pale ana i ka ʻoʻoleʻa a me ka lua ʻana) me ka pale ʻana i ka hopena mua o ka metala i hoʻoheheʻe ʻia.
2. Pūpū Hope (Hāʻawi i ka ikaika holoʻokoʻa a me ka hanu ʻana)
Hana:He ʻano papaha ka pūpū hope ma waho o ka papa ʻili. Kākoʻo ia i ka ikaika holoʻokoʻa o ka pūpū hoʻoheheʻe (e pale ana i ka deformation a i ʻole ka hiolo ʻana i ka wā e ninini ana) me ka hōʻoia ʻana i ka breathability (e hoʻokuʻu ana i nā kinoea mai ka lua a pale i ka porosity i ka hoʻolei ʻana).
3. Nā Noi Kūikawā no nā Hoʻolei Koi Kiʻekiʻe
Nā hoʻoheheʻe ʻana o ke kopa wela kiʻekiʻe:e like me nā pahi turbine ʻenekini mokulele (nā mahana ninini o 1500-1600°C), koi i ka pūpū mold e kū i nā mahana koʻikoʻi. Hiki i ke kūpaʻa kiʻekiʻe o ke one Mullite ke pani i ke one zircon pipiʻi (kiko heheʻe 2550°C, akā pipiʻi), e hoʻokō ana i nā koi kū'ē wela kiʻekiʻe me ka hoʻemi ʻana i nā kumukūʻai.
No nā hoʻoheheʻe metala reactive:e like me nā mea hoʻohui alumini a me nā mea hoʻohui magnesium (he mea pane wikiwiki loa a pane maʻalahi me ka SiO₂ i loko o ke one quartz e hana i nā inclusions), hiki i ke kūpaʻa kemika o ke one mullite ke hōʻemi i ka reactivity a pale i ke kūkulu ʻia ʻana o nā "oxidation inclusions" i loko o ka hoʻolei ʻana.
No nā hoʻoheheʻe kikoʻī nui:e like me nā hale pahu pahu turbine makani (hiki ke kaupaona i kekahi mau tona), pono ka pūpū mold i ka ikaika kūkulu kiʻekiʻe. ʻO ka papa hope i hana ʻia e ke one mullite a me ka mea hoʻopaʻa he ikaika kiʻekiʻe, e hōʻemi ana i ka pilikia o ka hoʻonui ʻana a me ka hiolo ʻana o ka mold.
4. Hoʻohui pū ʻia me nā mea hana ʻē aʻe
I ka hana maoli ʻana, hoʻohana pinepine ʻia ke one mullite me nā mea ʻē aʻe e hoʻonui i ka hana o ka pūpū hoʻoheheʻe:
Hoʻohui ʻia me ke one zircon:Hoʻohana ʻia ke one zircon ma ke ʻano he papa ʻili (e hōʻoia i kahi ʻili kiʻekiʻe aʻe) a me ke one mullite ma ke ʻano he papa kākoʻo (e hōʻemi i nā kumukūʻai). He kūpono kēia no nā mea i hoʻolei ʻia me nā koi ʻili kiʻekiʻe loa, e like me nā ʻāpana aerospace.
I hui pū ʻia me ke one quartz:No nā hoʻolei ʻana me nā koi mahana haʻahaʻa (e like me ke kopa keleawe, kiko heheʻe 1083 ℃), hiki iā ia ke pani hapa i ke one quartz a hoʻohana i ka hoʻonui haʻahaʻa o ke one mullite e hōʻemi i nā māwae pūpū.
| Kaʻina Hana Kuhikuhi No ka Hana ʻana i ka Pūpū Hoʻolei Kiʻekiʻe | ||
| ʻO ka slurry ʻili maʻamau, ka pauka zirconium | 325 mesh + silica sol | One: one zirconium 120 mesh |
| ʻO ka slurry papa hope | 325 mesh + silica sol + mullite powder 200 mesh | One: one mullite 30-60 mesh |
| Papa hoʻoikaika | Pauka Mullite 200 mesh + silica sol | One: one mullite 16-30 mesh |
| Hoʻopaʻa ʻana i ka slurry | Pauka Mullite 200 mesh + silica sol | _ |
ʻO Shandong Robert New Material Co., Ltd.Aia ma ke kūlanakauhale ʻo Zibo, ka moku ʻo Shandong, Kina, he kahua hana mea refractory. He ʻoihana hou mākou e hoʻohui i ka noiʻi a me ka hoʻomohala ʻana, ka hana ʻana, ke kūʻai aku ʻana, ka hoʻolālā a me ke kūkulu ʻana i ka umu, ka ʻenehana, a me ka hoʻokuʻu aku i nā mea refractory. Loaʻa iā mākou nā lako piha, nā ʻenehana holomua, ka ikaika loea ikaika, ka maikaʻi o ka huahana maikaʻi loa, a me ka inoa maikaʻi. Uhi kā mākou hale hana ma mua o 200 ʻeka a ʻo ka hopena makahiki o nā mea refractory i hoʻohālikelike ʻia he 30000 tons a ʻo nā mea refractory i hoʻohālikelike ʻole ʻia he 12000 tons.
ʻO kā mākou huahana nui o nā mea refractory:nā mea kūpaʻa alkaline; nā mea kūpaʻa silicon alumini; nā mea kūpaʻa ʻano ʻole; nā mea kūpaʻa wela insulation; nā mea kūpaʻa kūikawā; nā mea kūpaʻa hana no nā ʻōnaehana hoʻolei mau.
Nā Nīnau i Nīnau Pinepine ʻia
Pono kōkua? E kipa aku i kā mākou mau kahua kākoʻo no nā pane i kāu mau nīnau!
He mea hana maoli mākou, ua loea kā mākou hale hana i ka hana ʻana i nā mea refractory no nā makahiki he 30 a ʻoi. Hoʻohiki mākou e hāʻawi i ke kumukūʻai maikaʻi loa, ka lawelawe mua a me ka lawelawe ma hope o ke kūʻai aku.
No kēlā me kēia kaʻina hana, loaʻa iā RBT kahi ʻōnaehana QC piha no ka hoʻohuihui kemika a me nā waiwai kino. A e hoʻāʻo mākou i nā waiwai, a e hoʻouna ʻia ka palapala hōʻoia maikaʻi me nā waiwai. Inā he mau koi kūikawā kāu, e hoʻāʻo mākou i ka maikaʻi loa e hoʻokō iā lākou.
Ma muli o ka nui, ʻokoʻa ka manawa hoʻouna. Akā ke hoʻohiki nei mākou e hoʻouna koke me ka maikaʻi i hōʻoia ʻia.
ʻOiaʻiʻo, hāʻawi mākou i nā laʻana manuahi.
ʻAe, ʻoiaʻiʻo, ua ʻoluʻolu ʻia ʻoe e kipa i ka hui ʻo RBT a me kā mākou huahana.
ʻAʻohe palena, hiki iā mākou ke hāʻawi i ka manaʻo maikaʻi loa a me ka hoʻonā e like me kou kūlana.
Ua hana mākou i nā mea refractory no nā makahiki he 30 a ʻoi, loaʻa iā mākou ke kākoʻo loea ikaika a me ka ʻike waiwai, hiki iā mākou ke kōkua i nā mea kūʻai aku e hoʻolālā i nā kilns like ʻole a hāʻawi i ka lawelawe hoʻokahi.
