Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for producing sintered blue corundum
The invention provides a method for producing sintered blue corundum, and relates to the technical field of sintering of inorganic non-metallic materials. The method for producing the sintered blue corundum comprises the following steps: S1, mixing high-purity alumina powder and titanium blue to form raw material powder; s2, molding the raw material powder under preset pressure to obtain a green body; s3, the heating rate in the sintering furnace is controlled based on the temperature curve so as to reduce internal stress; and S4, cooling the sintered blue corundum and removing defects on the surface of the product. An obtained green body is put into a sintering furnace with heating parameters, such as heating and cooling rates, adjusted in advance, and sintering treatment is carried out based on a temperature change curve under accurate control, so that thermal stress caused by thermal expansion in a product in the heating and cooling stages can be effectively reduced; therefore, the possibility of cracks, damage and other flaws of the product is greatly reduced, and the consistency and stability of the blue corundum material are improved.
本发明提供一种生产烧结蓝刚玉的方法，涉及无机非金属材料烧结技术领域。该生产烧结蓝刚玉的方法，包括以下步骤：S1.通过混合高纯度氧化铝粉与钛蓝形成原料粉体；S2.将所述原料粉体在预定压力下成型得到生坯；S3.基于温度曲线控制烧结炉内的升温速率以减少内部应力；S4.对烧结后的蓝刚玉进行冷却并去除制品表面的缺陷。通过所得的生坯放入预先调整好加热参数如升降温速率等细节的烧结炉中，基于精确控制下的温度变化曲线进行烧结处理，能够有效降低在加热和冷却阶段产品内部由于热膨胀引起的热应力，从而极大地降低了制品发生裂缝、破损等瑕疵的可能性，提升了蓝刚玉材料的一致性与稳定性。
Method for producing sintered blue corundum
The invention provides a method for producing sintered blue corundum, and relates to the technical field of sintering of inorganic non-metallic materials. The method for producing the sintered blue corundum comprises the following steps: S1, mixing high-purity alumina powder and titanium blue to form raw material powder; s2, molding the raw material powder under preset pressure to obtain a green body; s3, the heating rate in the sintering furnace is controlled based on the temperature curve so as to reduce internal stress; and S4, cooling the sintered blue corundum and removing defects on the surface of the product. An obtained green body is put into a sintering furnace with heating parameters, such as heating and cooling rates, adjusted in advance, and sintering treatment is carried out based on a temperature change curve under accurate control, so that thermal stress caused by thermal expansion in a product in the heating and cooling stages can be effectively reduced; therefore, the possibility of cracks, damage and other flaws of the product is greatly reduced, and the consistency and stability of the blue corundum material are improved.
本发明提供一种生产烧结蓝刚玉的方法，涉及无机非金属材料烧结技术领域。该生产烧结蓝刚玉的方法，包括以下步骤：S1.通过混合高纯度氧化铝粉与钛蓝形成原料粉体；S2.将所述原料粉体在预定压力下成型得到生坯；S3.基于温度曲线控制烧结炉内的升温速率以减少内部应力；S4.对烧结后的蓝刚玉进行冷却并去除制品表面的缺陷。通过所得的生坯放入预先调整好加热参数如升降温速率等细节的烧结炉中，基于精确控制下的温度变化曲线进行烧结处理，能够有效降低在加热和冷却阶段产品内部由于热膨胀引起的热应力，从而极大地降低了制品发生裂缝、破损等瑕疵的可能性，提升了蓝刚玉材料的一致性与稳定性。
Method for producing sintered blue corundum
一种生产烧结蓝刚玉的方法
XU NANHUA (Autor:in) / CHEN XINCHUN (Autor:in) / LUO PING (Autor:in) / LU FAYING (Autor:in) / XU XIANGYU (Autor:in)
06.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Alumina-based sintered corundum mullite and production and preparation method thereof
| Europäisches Patentamt | 2022