Sand Mullite
ʻIkepili Huahana
Ke one mullitehe alumini silicate refractory mea, hoʻohana maʻamau i ke kaʻina hoʻoheheʻe kila kila. ʻO ka refractoriness ma kahi o 1750 degere. ʻOi aku ka kiʻekiʻe o ka alumini ma ke one mullite, ʻoi aku ka haʻahaʻa o ka hao, a me ka liʻiliʻi o ka lepo, ʻoi aku ka maikaʻi o ka huahana mullite sand. Hana ʻia ke one Mullite e ka sintering kiʻekiʻe o ka kaolin.
Nā hiʻohiʻona:
1. Ka helu heheʻe kiʻekiʻe, ma waena o 1750 a me 1860°C.
2. Paʻa wela kiʻekiʻe maikaʻi.
3. Haʻahaʻa hoʻonui wela wela.
4. Paʻa kemika kiʻekiʻe.
5. Hiki ke koho a me ka hoʻololi ʻana ma muli o nā kaʻina hana hoʻoheheʻe like ʻole a me nā koi hoʻolei.
Huahana Huahana
| Hōʻike | 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% |
| Xaustic Soda | ≤0.5% | ≤0.5% | ≤0.7% |
| ʻAiʻi Nui | ≥2.5g/cm3 | ≥2.5g/cm3 | ≥2.45g/cm3 |
Nā noi
ʻO ke kumu o ka hoʻoheheʻe pololei ʻana, ʻo ia ka hana ʻana i ka pūpū mold (ke kaʻina hana o ka uhi ʻana i ke kumu wax me nā ʻāpana he nui o nā mea refractory e hana ai i waho. Hoʻohana mua ʻia ke one ʻo Mullite ma ke ʻano he refractory aggregate i loko o ka pūpū mold a hoʻohana ʻia i nā ʻāpana like ʻole o ka pūpū, e like me kēia:
1. Ka Ili (E hoʻoholo pololei i ka maikaʻi o ka ʻili o ka hoʻolei ʻana)
Hana:Pili pololei ka papa ili me ka hoolei ana a pono e hōʻoia i ka hoʻopau ʻana o ka ʻili maʻemaʻe (e pale aku i ka ʻōpō a me ka lua) ʻoiai ke kū nei i ka hopena mua o ka metala i hoʻoheheʻe ʻia.
2. Back Shell (Hoʻolako i ka ikaika holoʻokoʻa a me ka hanu)
Hana:ʻO ka pūpū hope he ʻano ʻāpana ʻāpana ma waho o ka ʻili. Kākoʻo ia i ka ikaika holoʻokoʻa o ka pūpū mold (pale i ka deformation a hāʻule paha i ka wā o ka ninini ʻana) ʻoiai e hōʻoiaʻiʻo ana i ka hanu (hoʻokuʻu ʻana i nā kinoea mai ka lua a pale i ka porosity i ka hoʻolei ʻana).
3. Nā noi kūikawā no nā hoʻolei kiʻekiʻe
Kiʻekiʻe-mehana hoʻoheheʻe alloy:e like me nā ʻāpana ʻenekini mokulele mokulele (e ninini ana i nā mahana o 1500-1600 ° C), e koi i ka pūpū mold e kū i nā wela wela. Hiki ke hoʻololi i ke one zircon nui loa (kahi heheʻe 2550 ° C, akā pipiʻi) ke kiʻekiʻe refractoriness o ke one ʻo Mullite), e hālāwai me nā koi kūpaʻa kiʻekiʻe me ka hoʻemi ʻana i nā kumukūʻai.
No ka hoolei metala reactive:e like me nā alumini alumini a me ka magnesium alloys (ʻo ia ka mea nui loa a me ka maʻalahi me ka SiO₂ i loko o ke one quartz e hana i nā inclusions), hiki i ka paʻa kemika mullite sand ke hoʻemi i ka reactivity a pale i ka hoʻokumu ʻana o nā "oxidation inclusions" i ka hoʻolei ʻana.
No nā hoʻolei pololei nui:e like me ka makani turbine gearbox housings (hiki ke kaumaha i kekahi mau tons), pono ka ikaika o ke kino o ka mold. ʻO ka papa hope i hoʻokumu ʻia e ke one mullite a me ka binder he ikaika kiʻekiʻe, e hōʻemi ana i ka hopena o ka hoʻonui ʻana a me ka hāʻule.
4. Huipuia me na mea refractory e ae
I ka hana maoli ʻana, hoʻohana pinepine ʻia ke one mullite i hui pū ʻia me nā mea ʻē aʻe e hoʻomaikaʻi i ka hana ʻana o ka shell mold:
Hui pū me ke one zircon:Hoʻohana ʻia ke one zircon ma ke ʻano he papa ʻili (e hōʻoia i ka hoʻopau ʻana o ka ʻili kiʻekiʻe) a me ke one mullite ma ke ʻano o ka papa hope (e hōʻemi i nā kumukūʻai). He kūpono kēia no ka hoʻolei ʻana me nā koi kiʻekiʻe loa, e like me nā ʻāpana aerospace.
Hoʻohui ʻia me ke one quartz:No ka hoʻolei ʻana me nā koi haʻahaʻa haʻahaʻa (e like me ke keleawe keleawe, ka helu heheʻe 1083 ℃), hiki iā ia ke hoʻololi i ke one quartz a hoʻohana i ka hoʻonui haʻahaʻa o ke one mullite e hōʻemi i nā māwae pūpū.
| Ke Kaʻina Hana No ka hana ʻana i ka pūpū pololei | ||
| ʻO ka slurry ākea ākea, ka pauka zirconium | 325 mesh+silika sol | Ke one: zirconium one 120 mesh |
| slurry papa hope | 325 mesh+silica sol+mullite pauda 200 mesh | Ke one: mullite one 30-60 mesh |
| Papa hoʻoikaika | ʻO ka pauka Mullite 200 mesh + silica sol | Ke one: mullite one 16-30 mesh |
| Hoʻopaʻa slurry | ʻO ka pauka Mullite 200 mesh + silica sol | _ |
ʻIkepili Hui
Shandong Robert New Material Co., Ltd.Aia ma Zibo City, Shandong Province, Kina, kahi kumu hana hana refractory. He ʻoihana hou mākou e hoʻohui i ka noiʻi a me ka hoʻomohala ʻana, ka hana ʻana, ke kūʻai aku, ka hoʻolālā kiln a me ke kūkulu ʻana, ʻenehana, a me nā mea refractory hoʻokuʻu aku. Loaʻa iā mākou nā lako piha, nā ʻenehana holomua, ka ikaika ʻenehana ikaika, ka maikaʻi o ka huahana maikaʻi, a me ka inoa maikaʻi. Uhi kā mākou hale hana ma luna o 200 mau ʻeka a ʻo ka puka makahiki o nā mea refractory i hoʻohālikelike ʻia ma kahi o 30000 tons a me nā mea refractory unshaped he 12000 tons.
ʻO kā mākou mau huahana nui o nā mea refractory: aluminika silika refractory mea; nā mea refractory ʻaʻole i hoʻohālikelike ʻia; insulation thermal refractory mea; nā mea refractory kūikawā; nā mea refractory hana no nā ʻōnaehana hoʻolei mau.
Nīnau pinepine
Pono kōkua? E ʻoluʻolu e kipa i kā mākou hui 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. Hoʻohiki mākou e hāʻawi i ke kumukūʻai maikaʻi loa, ʻoi aku ka maikaʻi ma mua o ke kūʻai aku a ma hope o ke kūʻai aku.
No kēlā me kēia kaʻina hana, loaʻa iā RBT kahi ʻōnaehana QC piha no ka haku mele a me nā waiwai kino. A e hoʻāʻo mākou i nā waiwai, a e hoʻouna ʻia ka palapala hōʻoia me nā waiwai. Inā loaʻa iā ʻoe nā koi kūikawā, e hoʻāʻo mākou i ka maikaʻi loa e hoʻokipa iā lākou.
Ma muli o ka nui, ʻokoʻa kā mākou manawa lawe. Akā ke hoʻohiki nei mākou e hoʻouna koke aku me ka maikaʻi i hōʻoia ʻia.
ʻOiaʻiʻo, hāʻawi mākou i nā hōʻailona manuahi.
ʻAe, ʻoiaʻiʻo, ʻoluʻolu ʻoe e kipa i ka hui RBT a me kā mākou huahana.
ʻAʻohe palena, hiki iā mākou ke hāʻawi i ka manaʻo maikaʻi loa a me ka hopena e like me kou kūlana.
Ua hana mākou i nā mea refractory ma mua o 30 mau makahiki, loaʻa iā mākou ke kākoʻo ʻenehana ikaika a me ka ʻike waiwai, hiki iā mākou ke kōkua i nā mea kūʻai aku e hoʻolālā i nā kiln like ʻole a hāʻawi i ka lawelawe hoʻokahi.
