Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature precision casting low-creep corundum mullite and manufacturing method thereof
The invention discloses high-temperature precision casting low-creep corundum mullite and a manufacturing method thereof, and relates to the technical field of smelting. According to the high-temperature precision casting low-creep corundum mullite and the manufacturing method thereof, the specific steps are as follows: S1, preparing raw materials according to following basic requirements: industrial alumina Al2O3 is greater than 98%, Na2O is less than 0.5%, high-purity silicon oxide SiO2 is greater than 99%, Fe2O3 is less than 0.03%, and Re rare earth oxide is greater than or equal to 99.95%; S2, preparing high-purity corundum mullite according to following formula: the proportion of industrial alumina is 93-97%, and the proportion of silicon dioxide is 3%-7%, and then adding 1%-5% of Re rare earth oxide according to the total weight of the powder; and S3, uniformly stirring and mixing the powder according to the process. According to the high-temperature precision casting low-creep corundum mullite and the manufacturing method thereof, by adjusting the adding proportion of rare earth, transformation of a mullite net structure rock phase is well controlled, and the microstructure of white corundum is adjusted and optimized; and after crushing and screening, the product is suitable for small-allowance or zero-allowance precision casting at high temperature and is used for manufacturing a ceramic shell and a ceramic core.
本发明公开了高温精密铸造低蠕变刚玉莫来石及其制造方法，涉及冶炼技术领域。该高温精密铸造低蠕变刚玉莫来石及其制造方法，所述具体步骤如下：S1、原材料的基本要求：工业氧化铝：Al2O3>98％，Na2O<0.5％，高纯氧化硅：SiO2>99％，Fe2O3<0.03％；Re稀土氧化物：≥99.95％，S2、高纯度刚玉莫来石配方：工业氧化铝的比例为93％～97％；二氧化硅的比例为3％～7％，然后按粉料总重量加入1％～5％的Re稀土氧化物，S3、将上述粉料按工艺进行搅拌混合均匀。该高温精密铸造低蠕变刚玉莫来石及其制造方法，通过调整稀土的加入比例很好地控制了莫来石网状结构岩相的转变，调整优化了白刚玉的微观结构，并经破碎筛分适用于高温下小余量或无余量精密铸造、制造陶瓷型壳及型芯的高级耐火材料。
High-temperature precision casting low-creep corundum mullite and manufacturing method thereof
The invention discloses high-temperature precision casting low-creep corundum mullite and a manufacturing method thereof, and relates to the technical field of smelting. According to the high-temperature precision casting low-creep corundum mullite and the manufacturing method thereof, the specific steps are as follows: S1, preparing raw materials according to following basic requirements: industrial alumina Al2O3 is greater than 98%, Na2O is less than 0.5%, high-purity silicon oxide SiO2 is greater than 99%, Fe2O3 is less than 0.03%, and Re rare earth oxide is greater than or equal to 99.95%; S2, preparing high-purity corundum mullite according to following formula: the proportion of industrial alumina is 93-97%, and the proportion of silicon dioxide is 3%-7%, and then adding 1%-5% of Re rare earth oxide according to the total weight of the powder; and S3, uniformly stirring and mixing the powder according to the process. According to the high-temperature precision casting low-creep corundum mullite and the manufacturing method thereof, by adjusting the adding proportion of rare earth, transformation of a mullite net structure rock phase is well controlled, and the microstructure of white corundum is adjusted and optimized; and after crushing and screening, the product is suitable for small-allowance or zero-allowance precision casting at high temperature and is used for manufacturing a ceramic shell and a ceramic core.
本发明公开了高温精密铸造低蠕变刚玉莫来石及其制造方法，涉及冶炼技术领域。该高温精密铸造低蠕变刚玉莫来石及其制造方法，所述具体步骤如下：S1、原材料的基本要求：工业氧化铝：Al2O3>98％，Na2O<0.5％，高纯氧化硅：SiO2>99％，Fe2O3<0.03％；Re稀土氧化物：≥99.95％，S2、高纯度刚玉莫来石配方：工业氧化铝的比例为93％～97％；二氧化硅的比例为3％～7％，然后按粉料总重量加入1％～5％的Re稀土氧化物，S3、将上述粉料按工艺进行搅拌混合均匀。该高温精密铸造低蠕变刚玉莫来石及其制造方法，通过调整稀土的加入比例很好地控制了莫来石网状结构岩相的转变，调整优化了白刚玉的微观结构，并经破碎筛分适用于高温下小余量或无余量精密铸造、制造陶瓷型壳及型芯的高级耐火材料。
High-temperature precision casting low-creep corundum mullite and manufacturing method thereof
高温精密铸造低蠕变刚玉莫来石及其制造方法
LIN NANYANG (Autor:in) / ZHONG WENJIAN (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Granular mullite for high-temperature precision casting and manufacturing method thereof
| Europäisches Patentamt | 2021
Lightweight high-strength corundum mullite castable and preparation method thereof
| Europäisches Patentamt | 2022
High-temperature-resistant and anti-erosion corundum mullite brick and preparation method thereof
| Europäisches Patentamt | 2022
Preparation method of ultra-high temperature corundum-mullite ceramic product
| Europäisches Patentamt | 2021