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Preparation method of end plug of SiC composite cladding tube
The invention belongs to the technical field of manufacturing of novel core cladding materials, and particularly relates to a preparation method of an end plug of a SiC composite cladding tube. The preparation method comprises the following steps: mixing SiC whiskers with SiC powder according to a total volume content of 10%-30%; putting the proportioned SiC whiskers and SiC powder into a three-dimensional mixing tank; putting the mixed SiC whiskers and SiC powder into a graphite pressure-bearing mold; putting the graphite pressure-bearing mold into a hot-pressing sintering furnace; vacuumizing the hot-pressing sintering furnace; pressurizing the SiC whiskers and the SiC powder in the graphite pressure-bearing mold through an upper punch and a lower punch; carrying out heat preservation after heating and temperature rise, and carrying out sintering molding on the SiC whiskers and the SiC powder in the graphite pressure-bearing mold; and after heat preservation is finished, reducing the temperature is to room temperature, removing the pressure of the graphite pressure-bearing mold, eliminating the vacuum of the hot-pressing sintering furnace, and taking out the end plug of the SiC composite cladding tube sintered in the graphite pressure-bearing mold. The relative density of the prepared end plug of the SiC composite cladding tube reaches 96% or above, and the boundary dimension of the end plug meets technical requirements.
本发明属于新型核包壳材料制造技术领域，具体涉及一种SiC复合材料包壳管的端塞制备方法。将SiC晶须按照总体积含量10％—30％与SiC粉末混合；将配比后的SiC晶须与SiC粉末放入三维混料罐中；将混合后的SiC晶须与SiC粉末放入石墨承压模具中；将石墨承压模具装入热压烧结炉中；热压烧结炉抽真空；通过上下冲头对石墨承压模具内的SiC晶须与SiC粉末加压；加热升温后保温，对石墨承压模具内的SiC晶须与SiC粉末进行烧结成型；保温结束后降至室温，去除石墨承压模具压力，去除热压烧结炉真空，取出石墨承压模具内烧结好的SiC复合材料包壳管的端塞。制备的SiC复合材料包壳管端塞相对密度达到96％以上，外形尺寸满足技术要求。
Preparation method of end plug of SiC composite cladding tube
The invention belongs to the technical field of manufacturing of novel core cladding materials, and particularly relates to a preparation method of an end plug of a SiC composite cladding tube. The preparation method comprises the following steps: mixing SiC whiskers with SiC powder according to a total volume content of 10%-30%; putting the proportioned SiC whiskers and SiC powder into a three-dimensional mixing tank; putting the mixed SiC whiskers and SiC powder into a graphite pressure-bearing mold; putting the graphite pressure-bearing mold into a hot-pressing sintering furnace; vacuumizing the hot-pressing sintering furnace; pressurizing the SiC whiskers and the SiC powder in the graphite pressure-bearing mold through an upper punch and a lower punch; carrying out heat preservation after heating and temperature rise, and carrying out sintering molding on the SiC whiskers and the SiC powder in the graphite pressure-bearing mold; and after heat preservation is finished, reducing the temperature is to room temperature, removing the pressure of the graphite pressure-bearing mold, eliminating the vacuum of the hot-pressing sintering furnace, and taking out the end plug of the SiC composite cladding tube sintered in the graphite pressure-bearing mold. The relative density of the prepared end plug of the SiC composite cladding tube reaches 96% or above, and the boundary dimension of the end plug meets technical requirements.
本发明属于新型核包壳材料制造技术领域，具体涉及一种SiC复合材料包壳管的端塞制备方法。将SiC晶须按照总体积含量10％—30％与SiC粉末混合；将配比后的SiC晶须与SiC粉末放入三维混料罐中；将混合后的SiC晶须与SiC粉末放入石墨承压模具中；将石墨承压模具装入热压烧结炉中；热压烧结炉抽真空；通过上下冲头对石墨承压模具内的SiC晶须与SiC粉末加压；加热升温后保温，对石墨承压模具内的SiC晶须与SiC粉末进行烧结成型；保温结束后降至室温，去除石墨承压模具压力，去除热压烧结炉真空，取出石墨承压模具内烧结好的SiC复合材料包壳管的端塞。制备的SiC复合材料包壳管端塞相对密度达到96％以上，外形尺寸满足技术要求。
Preparation method of end plug of SiC composite cladding tube
一种SiC复合材料包壳管的端塞制备方法
LU YONGHENG (author) / FENG HAINING (author) / GUO HONG (author) / LIU JIANCHENG (author) / TIAN GUANGFENG (author) / HUANG LIGONG (author) / MENG YING (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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