Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Graphite porous crucible and preparation method thereof
The invention relates to a preparation method of a graphite porous crucible. The raw materials of the crucible comprise a solid raw material and modified asphalt, the solid raw material comprises, byweight, 52%-64% of graphitized calcined coke and 36%-48% of a graphitized thermal insulation material, and the modified asphalt accounts for 20%-24% of the solid raw material. The graphite porous crucible is not prone to breakage, low in resistivity and excellent in mechanical property, the prepared graphite crucible is high in compactness, the volume density ranges from 1.62 g/cm3 to 1.64 g/cm3,the resistivity ranges from 20 u.[Omega].M to 25 u.[Omega].M, and the breaking strength is not smaller than 5.7 Mpa; the compact green body is formed by gradually stacking and compacting under the action of self-weight and external force by adopting a horizontal vibration molding process, so that the compactness of the graphite crucible is greatly improved; and the warm roasting mode can greatly reduce the problems of bulging, cracking and the like of the crucible caused by over-high temperature rise or over-fast temperature reduction of the graphite crucible in the roasting process and the cooling process.
本发明涉及一种石墨质多孔坩埚制备方法，所述坩埚原料包括固体原料和改质沥青，固体原料按重量分数包括石墨化煅后焦52％‑64％、石墨化保温料36‑48％，所述改质沥青占固体原料质量分数的20‑24％。本发明的石墨质多孔坩埚不易破裂，电阻率低，力学性能优异，制得的石墨质坩埚密实度高，体积密度在1.62‑1.64g/cm3之间，电阻率在20‑25u.Ω.m之间，抗折强度不小于5.7Mpa；通过采用卧式振动成型工艺在自重和外力作用下逐渐堆积密实形成致密的坯体，大大提高石墨质坩埚的密实性；而温焙烧方式能够大大降低石墨质坩埚在焙烧过程和冷却过程中出现升温过高或降温太快而造成的坩埚出现鼓包和裂纹等问题。
Graphite porous crucible and preparation method thereof
The invention relates to a preparation method of a graphite porous crucible. The raw materials of the crucible comprise a solid raw material and modified asphalt, the solid raw material comprises, byweight, 52%-64% of graphitized calcined coke and 36%-48% of a graphitized thermal insulation material, and the modified asphalt accounts for 20%-24% of the solid raw material. The graphite porous crucible is not prone to breakage, low in resistivity and excellent in mechanical property, the prepared graphite crucible is high in compactness, the volume density ranges from 1.62 g/cm3 to 1.64 g/cm3,the resistivity ranges from 20 u.[Omega].M to 25 u.[Omega].M, and the breaking strength is not smaller than 5.7 Mpa; the compact green body is formed by gradually stacking and compacting under the action of self-weight and external force by adopting a horizontal vibration molding process, so that the compactness of the graphite crucible is greatly improved; and the warm roasting mode can greatly reduce the problems of bulging, cracking and the like of the crucible caused by over-high temperature rise or over-fast temperature reduction of the graphite crucible in the roasting process and the cooling process.
本发明涉及一种石墨质多孔坩埚制备方法，所述坩埚原料包括固体原料和改质沥青，固体原料按重量分数包括石墨化煅后焦52％‑64％、石墨化保温料36‑48％，所述改质沥青占固体原料质量分数的20‑24％。本发明的石墨质多孔坩埚不易破裂，电阻率低，力学性能优异，制得的石墨质坩埚密实度高，体积密度在1.62‑1.64g/cm3之间，电阻率在20‑25u.Ω.m之间，抗折强度不小于5.7Mpa；通过采用卧式振动成型工艺在自重和外力作用下逐渐堆积密实形成致密的坯体，大大提高石墨质坩埚的密实性；而温焙烧方式能够大大降低石墨质坩埚在焙烧过程和冷却过程中出现升温过高或降温太快而造成的坩埚出现鼓包和裂纹等问题。
Graphite porous crucible and preparation method thereof
一种石墨质多孔坩埚及其制备方法
YANG XIUGANG (Autor:in) / YOU BING (Autor:in) / PENG GEHUA (Autor:in) / LUO XIANGMING (Autor:in) / FENG BING (Autor:in) / LIANG GUOLONG (Autor:in) / LUO YUNPENG (Autor:in)
01.05.2020
Patent
Elektronische Ressource
Chinesisch
Graphite crucible repairing material and graphite crucible repairing method
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