Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Graphite crucible for vacuum smelting of intermediate frequency furnace and preparation method thereof
The invention belongs to the technical field, and provides a graphite crucible for vacuum smelting of an intermediate frequency furnace and a preparation method thereof. The graphite crucible comprises the following components in parts by weight: 7-9 parts of needle coke with the granularity of 4-6mm, 8-10 parts of needle coke with the granularity of 2-4mm, 20-25 parts of needle coke with the granularity of 0-2mm, 26-35 parts of needle coke powder, 7-12 parts of graphite and 15-25 parts of modified asphalt. The modified asphalt is prepared from the following components in parts by weight: 60-80 parts of asphalt, 10-15 parts of nano silicon dioxide, 2-7 parts of chromic oxide, 1-5 parts of polyvinyl alcohol and 0.5-3 parts of sodium oleate. The preparation method of the graphite crucible comprises the following steps: performing dry mixing on the needle coke with the particle size of 4-6mm, the needle coke with the particle size of 2-4mm, the needle coke with the particle size of 0-2mm,needle coke powder and three-high graphite, adding modified asphalt, performing wet mixing to obtain paste, and performing crushing, compression molding, roasting, graphitization and the like on thepaste to obtain the graphite crucible. By means of the technical scheme, the problems that in the prior art, the graphite crucible is not high in strength and low in yield are solved.
本发明属于技术领域，提出了一种中频炉真空冶炼用石墨坩埚及其制备方法。一种中频炉真空冶炼用石墨坩埚，包括以下重量份的组分：粒度为4～6mm的针状焦7～9份，粒度为2～4mm的针状焦8～10份，粒度为0～2mm的针状焦20～25份，针状焦粉26～35份，石墨7～12份，改性沥青15～25份；改性沥青由以下重量份的组分组成：沥青60～80份，纳米二氧化硅10～15份，氧化铬2～7份，聚乙烯醇1～5份，油酸钠0.5～3份。石墨坩埚的制备方法中采用先将粒度为4～6mm的针状焦、粒度为2～4mm的针状焦、粒度为0～2mm的针状焦、针状焦粉与三高石墨干混，再加入改性沥青湿混，得到糊料，再将糊料经粉碎、压制成型、焙烧、石墨化等工序制得石墨坩埚。通过上述技术方案，解决了现有技术中石墨坩埚强度不高、成品率低的问题。
Graphite crucible for vacuum smelting of intermediate frequency furnace and preparation method thereof
The invention belongs to the technical field, and provides a graphite crucible for vacuum smelting of an intermediate frequency furnace and a preparation method thereof. The graphite crucible comprises the following components in parts by weight: 7-9 parts of needle coke with the granularity of 4-6mm, 8-10 parts of needle coke with the granularity of 2-4mm, 20-25 parts of needle coke with the granularity of 0-2mm, 26-35 parts of needle coke powder, 7-12 parts of graphite and 15-25 parts of modified asphalt. The modified asphalt is prepared from the following components in parts by weight: 60-80 parts of asphalt, 10-15 parts of nano silicon dioxide, 2-7 parts of chromic oxide, 1-5 parts of polyvinyl alcohol and 0.5-3 parts of sodium oleate. The preparation method of the graphite crucible comprises the following steps: performing dry mixing on the needle coke with the particle size of 4-6mm, the needle coke with the particle size of 2-4mm, the needle coke with the particle size of 0-2mm,needle coke powder and three-high graphite, adding modified asphalt, performing wet mixing to obtain paste, and performing crushing, compression molding, roasting, graphitization and the like on thepaste to obtain the graphite crucible. By means of the technical scheme, the problems that in the prior art, the graphite crucible is not high in strength and low in yield are solved.
本发明属于技术领域，提出了一种中频炉真空冶炼用石墨坩埚及其制备方法。一种中频炉真空冶炼用石墨坩埚，包括以下重量份的组分：粒度为4～6mm的针状焦7～9份，粒度为2～4mm的针状焦8～10份，粒度为0～2mm的针状焦20～25份，针状焦粉26～35份，石墨7～12份，改性沥青15～25份；改性沥青由以下重量份的组分组成：沥青60～80份，纳米二氧化硅10～15份，氧化铬2～7份，聚乙烯醇1～5份，油酸钠0.5～3份。石墨坩埚的制备方法中采用先将粒度为4～6mm的针状焦、粒度为2～4mm的针状焦、粒度为0～2mm的针状焦、针状焦粉与三高石墨干混，再加入改性沥青湿混，得到糊料，再将糊料经粉碎、压制成型、焙烧、石墨化等工序制得石墨坩埚。通过上述技术方案，解决了现有技术中石墨坩埚强度不高、成品率低的问题。
Graphite crucible for vacuum smelting of intermediate frequency furnace and preparation method thereof
一种中频炉真空冶炼用石墨坩埚及其制备方法
WANG XINGLU (Autor:in) / MENG SHUANGLIN (Autor:in) / WANG QIUSHENG (Autor:in) / ZHANG YUZHU (Autor:in) / WU QIUNA (Autor:in) / DUAN ZENGLIANG (Autor:in) / LI KUANGZHENG (Autor:in)
24.04.2020
Patent
Elektronische Ressource
Chinesisch
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