The Fabrication Conditions Of Spherical Graphite
In the recent decade, many research cooperations and industries are engaged in the industrial production of spherical graphite materials because of its relatively closed structure and good low-temperature strength. As a result, the demand for spherical graphite is high and the study of its production technology and conditions has become increasingly hot.
Taking into account the formation effect of spherical graphite in the production process,the production of spherical graphite requires the correct selection of raw materials and appropriate synthesis conditions. First of all,all raw materials used in the production of spherical graphite should be high-purity graphite and other related refractory materials and additives,so as to ensure the quality of the spherical graphite.
In addition, it is necessary to have perfect synthesis conditions,such as high temperature and pressure,in order to make sure that the graphite and related material can form regular spherical shape under the action of external force.
For the fabrication condition of spherical graphite, prosessing temperature is a crucial factor because high-temperature can make a better graphitization and can give a good sphericity to graphite, while too high temperature can cause the graphite split into small fragments. Generally speaking, processing temperature should becontrolled in the range of 1,400-2,000 degrees Celsius.
In terms of the processing pressure of spherical graphite, it should be controlled in a high-pressure range, which is preferably greater than 2,000MPa. Freezing should also be considered in the process of producing spherical graphite, with a temperature range of -80 to -40 degrees Celsius which ensure a specific pressure drop, isothermal rate and cooling rate during the process.
Meanwhile, in order to make the spherical graphite have a better crystal structure, it is critical to control the atmosphere pressure in proper range, which is usually 0.05-10MPa. The right pressure values lead to a even shrinking of graphite and make sure the forming of the spherical shape of graphite.
In terms of time, the duration of the graphite production should be controlled between 1-2 hours in order to guarantee that the graphite particles form a spherically shape.
In conclusion, in order to produce spherical graphite material with a stable and regular structure, the selection of raw material, perfect synthesis conditions,process temperature, right pressure values and conservative time theories should be followed during the production process.
关于球状石墨生长的工艺条件
近十年来，由于球状石墨具有较封闭的结构和较好的低温强度，许多研究合作和行业都参与到球状石墨材料的工业生产中，因此对球状石墨的需求量很高，其生产技术和条件的研究日益热门。
考虑到球状石墨在生产过程中的形成效果，生产球状石墨需要正确选择原材料和适当的合成条件。首先，在生产球状石墨中使用的所有原料都应是高纯石墨和其他相关耐火材料和添加剂，以确保球状石墨的质量。
此外，有必要拥有完美的合成条件，如高温和高压，以确保石墨和相关材料在外力作用下能够形成规则的球形。
就球状石墨的制备条件而言，加工温度是一个至关重要的因素，因为高温可以使石墨化更好，并且可以使石墨具有良好的球形，而太高的温度可能会导致石墨裂变成小碎片。总的来说，加工温度应控制在1400-2000摄氏度的范围内。
就球状石墨的加工压力而言，它应控制在高压范围内，最好大于2000MPa。生产球状石墨过程中也应考虑结冰，温度范围为-80至-40摄氏度，以确保过程中有特定的压力降落、等温率和冷却速率。
与此同时，为了使球状石墨具有更好的晶体结构，控制气氛压力在适当的范围内是至关重要的，通常为0.05-10MPa。正确的压力值会导致石墨的均匀收缩，并确保石墨形成球形。
就时间而言，石墨生产的持续时间应控制在1-2小时之间，以保证石墨颗粒形成球形。
综上所述，要生产具有稳定和规则结构的球状石墨材料，在生产过程中应遵循原料的选择、完美的合成条件、加工温度、合适的压力值和严格的时间理论。
