Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation of modified white corundum powder and application of modified white corundum powder in ceramic shell surface layer material
The invention discloses preparation of modified white corundum powder and application of the modified white corundum powder in a ceramic shell surface layer material, and belongs to the technical field of precision casting auxiliary materials. The preparation method comprises the following steps: firstly, carrying out surface modification and structure modification on white corundum powder to obtain modified white corundum powder with low reaction activity, taking the modified white corundum powder as a main raw material of a ceramic shell surface layer material, and adding a pre-sintered composite oxide and metal oxide powder containing trace elements in alloy components into the modified white corundum powder to prepare the ceramic shell surface layer material. The wetting angle of the alloy on the surface of the shell is greatly increased, and the chemical reaction rate and the ion migration probability of the alloy and the surface of the shell are reduced, so that the aim of reducing the burnt-on sand on the surface of the cast alloy blade is fulfilled. According to the raw material modification method and the multi-angle and all-directional shell surface layer material formula disclosed by the invention, the probability of chemical reaction on the surface of the blade can be practically reduced, the qualification rate of blade casting is improved, and a feasible scheme is provided for solving the problem of surface chemical burnt-on sand in the blade casting process.
本发明公开了一种改性白刚玉粉的制备及在陶瓷型壳面层材料中的应用，属于精密铸造辅材技术领域。本发明首先对白刚玉粉进行表面改性和结构改型，得到低反应活性的改性白刚玉粉，并将其用作陶瓷型壳面层材料的主要原料，且通过在改性白刚玉粉中添加预烧结复合氧化物和含有合金成分中的微量元素的金属氧化物粉体，大幅提高合金在型壳表面的润湿角，降低合金与型壳表面的化学反应速率和离子迁移机率，从而达到降低铸造合金叶片表面粘砂的目的。本发明公开的原料改性方法，以及多角度、全方位的型壳面层材料配方，能切实降低叶片表面发生化学反应的机率，提高叶片铸造的合格率，为解决叶片铸造过程中的表面化学粘砂问题提供可行方案。
Preparation of modified white corundum powder and application of modified white corundum powder in ceramic shell surface layer material
The invention discloses preparation of modified white corundum powder and application of the modified white corundum powder in a ceramic shell surface layer material, and belongs to the technical field of precision casting auxiliary materials. The preparation method comprises the following steps: firstly, carrying out surface modification and structure modification on white corundum powder to obtain modified white corundum powder with low reaction activity, taking the modified white corundum powder as a main raw material of a ceramic shell surface layer material, and adding a pre-sintered composite oxide and metal oxide powder containing trace elements in alloy components into the modified white corundum powder to prepare the ceramic shell surface layer material. The wetting angle of the alloy on the surface of the shell is greatly increased, and the chemical reaction rate and the ion migration probability of the alloy and the surface of the shell are reduced, so that the aim of reducing the burnt-on sand on the surface of the cast alloy blade is fulfilled. According to the raw material modification method and the multi-angle and all-directional shell surface layer material formula disclosed by the invention, the probability of chemical reaction on the surface of the blade can be practically reduced, the qualification rate of blade casting is improved, and a feasible scheme is provided for solving the problem of surface chemical burnt-on sand in the blade casting process.
本发明公开了一种改性白刚玉粉的制备及在陶瓷型壳面层材料中的应用，属于精密铸造辅材技术领域。本发明首先对白刚玉粉进行表面改性和结构改型，得到低反应活性的改性白刚玉粉，并将其用作陶瓷型壳面层材料的主要原料，且通过在改性白刚玉粉中添加预烧结复合氧化物和含有合金成分中的微量元素的金属氧化物粉体，大幅提高合金在型壳表面的润湿角，降低合金与型壳表面的化学反应速率和离子迁移机率，从而达到降低铸造合金叶片表面粘砂的目的。本发明公开的原料改性方法，以及多角度、全方位的型壳面层材料配方，能切实降低叶片表面发生化学反应的机率，提高叶片铸造的合格率，为解决叶片铸造过程中的表面化学粘砂问题提供可行方案。
Preparation of modified white corundum powder and application of modified white corundum powder in ceramic shell surface layer material
一种改性白刚玉粉的制备及在陶瓷型壳面层材料中的应用
OUYANG JING (Autor:in) / KOU BAOHONG (Autor:in) / ZHOU WENTAO (Autor:in)
09.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Surface-plated white corundum abrasive and preparation method thereof
| Europäisches Patentamt | 2020
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