Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Production method of UHP phi 650mm ultra-high power graphite electrode
The invention discloses a production method of a UHP phi 650mm ultra-high power graphite electrode. P66 oil-based needle coke and liquid modified asphalt are used as main raw materials; the productionmethod comprises the following procedures of: a forming procedure, primary roasting, an impregnation procedure, secondary roasting, an LWG internal string graphitization procedure and a machining production procedure, and by adopting large-particle needle coke with a particle size of 12-24mm or above, the air permeability of a product in a thermal environment is effectively improved, the probability of crack generation is reduced, and the quality reliability and the stable performance of the product are ensured; a water circulation and Roots vacuum combined pump set is adopted for vacuumizing, the vacuum degree in a dipping tank reaches 0.09Mpa or above, the pressurization pressure is stabilized between 1.4Mpa and 1.6Mpa, and the weight gain rate is controlled within the range of 12-14% under the technological conditions of high pressure and high vacuum. According to the UHP phi 650mm graphite electrode product prepared by the method, the breaking strength reaches 11.0Mpa or above, and the UHP phi 650mm graphite electrode product has good thermal shock resistance and relatively high suitability.
本发明公开了一种UHPφ650mm超高功率石墨电极的生产方法，采用P66油系针状焦和液体改质沥青为主要原料，其生产方法包括以下工序：成型工序、一次焙烧、浸渍工序、二次焙烧、LWG内串石墨化工序和机加工生产工序，通过采用12～24mm以上大颗粒针状焦，有效增加制品在热环境下的透气性，减少裂纹产生的几率，保证产品质量可靠性能稳定；抽真空采用水循环和罗茨真空组合泵组，浸渍罐内的真空度达到0.09Mpa以上，加压压力稳定在1.4 Mpa～1.6Mpa，在高压力高真空的工艺条件下，使增重率控制在12～14%的范围内。本发明所制备的UHPΦ650mm石墨电极制品，抗折强度达到11.0Mpa以上，具有良好的抗热震性能和较高的适宜性。
Production method of UHP phi 650mm ultra-high power graphite electrode
The invention discloses a production method of a UHP phi 650mm ultra-high power graphite electrode. P66 oil-based needle coke and liquid modified asphalt are used as main raw materials; the productionmethod comprises the following procedures of: a forming procedure, primary roasting, an impregnation procedure, secondary roasting, an LWG internal string graphitization procedure and a machining production procedure, and by adopting large-particle needle coke with a particle size of 12-24mm or above, the air permeability of a product in a thermal environment is effectively improved, the probability of crack generation is reduced, and the quality reliability and the stable performance of the product are ensured; a water circulation and Roots vacuum combined pump set is adopted for vacuumizing, the vacuum degree in a dipping tank reaches 0.09Mpa or above, the pressurization pressure is stabilized between 1.4Mpa and 1.6Mpa, and the weight gain rate is controlled within the range of 12-14% under the technological conditions of high pressure and high vacuum. According to the UHP phi 650mm graphite electrode product prepared by the method, the breaking strength reaches 11.0Mpa or above, and the UHP phi 650mm graphite electrode product has good thermal shock resistance and relatively high suitability.
本发明公开了一种UHPφ650mm超高功率石墨电极的生产方法，采用P66油系针状焦和液体改质沥青为主要原料，其生产方法包括以下工序：成型工序、一次焙烧、浸渍工序、二次焙烧、LWG内串石墨化工序和机加工生产工序，通过采用12～24mm以上大颗粒针状焦，有效增加制品在热环境下的透气性，减少裂纹产生的几率，保证产品质量可靠性能稳定；抽真空采用水循环和罗茨真空组合泵组，浸渍罐内的真空度达到0.09Mpa以上，加压压力稳定在1.4 Mpa～1.6Mpa，在高压力高真空的工艺条件下，使增重率控制在12～14%的范围内。本发明所制备的UHPΦ650mm石墨电极制品，抗折强度达到11.0Mpa以上，具有良好的抗热震性能和较高的适宜性。
Production method of UHP phi 650mm ultra-high power graphite electrode
UHPφ650mm超高功率石墨电极的生产方法
FENG JIANGUO (Autor:in) / DING JIEBIN (Autor:in)
27.10.2020
Patent
Elektronische Ressource
Chinesisch
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