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A platform for research: civil engineering, architecture and urbanism
High-refractoriness low-expansion silicon carbide roller and preparation method thereof
The invention provides a high-refractoriness low-expansion silicon carbide roller and a preparation method thereof.The preparation method comprises the steps that silicon carbide micro powder with the first particle size, silicon carbide micro powder with the second particle size and silicon carbide micro powder with the third particle size are graded and mixed with a solid additive and a liquid additive, and a sintered material is obtained; mixing the sintered material with a liquid additive to obtain molding pug; and sequentially extruding, drying and sintering the molding pug to obtain the high-refractoriness low-expansion silicon carbide roller. The sintering is an integrated sintering process of firstly discharging glue and then sintering. The use temperature of the silicon carbide roller prepared by the preparation method is greater than or equal to 1500 DEG C, the refractoriness under load is greater than or equal to 1700 DEG C, the requirements of the industrial field on high-temperature materials are met, and meanwhile, the silicon carbide roller has relatively low expansion coefficient, excellent thermal shock resistance and relatively long service life.
本发明提供一种高耐火度低膨胀碳化硅辊棒及其制备方法，所述制备方法包括：将第一粒径的碳化硅微粉、第二粒径的碳化硅微粉以及第三粒径的碳化硅微粉进行级配，并与固体添加剂和液体添加剂混合，得到烧结料；将所述烧结料与液体添加剂混合，得到塑形泥料；对所述塑形泥料依次进行挤出、干燥和烧结，得到所述高耐火度低膨胀碳化硅辊棒；所述烧结为先排胶后烧结的一体式烧成工艺。所述制备方法制备得到的碳化硅辊棒使用温度≥1500℃，荷重软化温度≥1700℃，满足工业领域对高温材料的需求，且同时具备较低的膨胀系数、优异的抗热冲击能力以及较长的使用寿命。
High-refractoriness low-expansion silicon carbide roller and preparation method thereof
The invention provides a high-refractoriness low-expansion silicon carbide roller and a preparation method thereof.The preparation method comprises the steps that silicon carbide micro powder with the first particle size, silicon carbide micro powder with the second particle size and silicon carbide micro powder with the third particle size are graded and mixed with a solid additive and a liquid additive, and a sintered material is obtained; mixing the sintered material with a liquid additive to obtain molding pug; and sequentially extruding, drying and sintering the molding pug to obtain the high-refractoriness low-expansion silicon carbide roller. The sintering is an integrated sintering process of firstly discharging glue and then sintering. The use temperature of the silicon carbide roller prepared by the preparation method is greater than or equal to 1500 DEG C, the refractoriness under load is greater than or equal to 1700 DEG C, the requirements of the industrial field on high-temperature materials are met, and meanwhile, the silicon carbide roller has relatively low expansion coefficient, excellent thermal shock resistance and relatively long service life.
本发明提供一种高耐火度低膨胀碳化硅辊棒及其制备方法，所述制备方法包括：将第一粒径的碳化硅微粉、第二粒径的碳化硅微粉以及第三粒径的碳化硅微粉进行级配，并与固体添加剂和液体添加剂混合，得到烧结料；将所述烧结料与液体添加剂混合，得到塑形泥料；对所述塑形泥料依次进行挤出、干燥和烧结，得到所述高耐火度低膨胀碳化硅辊棒；所述烧结为先排胶后烧结的一体式烧成工艺。所述制备方法制备得到的碳化硅辊棒使用温度≥1500℃，荷重软化温度≥1700℃，满足工业领域对高温材料的需求，且同时具备较低的膨胀系数、优异的抗热冲击能力以及较长的使用寿命。
High-refractoriness low-expansion silicon carbide roller and preparation method thereof
一种高耐火度低膨胀碳化硅辊棒及其制备方法
ZANG ZHICHENG (author) / PENG HONG (author) / ZHU ZENGZAN (author) / SUN MIN (author) / XU HUAN (author) / LI QIUSHENG (author) / XIE RENFEI (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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