摘要
在WC粉末生产的传统工艺中,存在W粉和炭黑混合粉体的装舟量越少,W粉碳化程度越高、产品中W2C相越少的认识误区。本文通过科学实验和工业应用实践,采用热力学分析研究WC粉末生产工艺中原料装舟量对W粉碳化速率和能耗的影响规律。结果表明,碳化速率随W粉与炭黑混合粉末装舟量的变化而变化,生产能耗随装舟量的增大而减小。在此基础上建立了适用于常规粒度(从超细到超粗)WC粉末生产的碳化速率、能耗和装舟量之间的定量关系,并使WC粉末的碳化效果和生产效率得到了提高。
In conventional industrial production of WC powders,there is an obstinate concept,which alleges the quality of WC powders will be better if fewer mixtures of tungsten and carbon powders are loaded.In the present paper,the effects of raw materials loaded in graphite boat on the energy consumption and the rate of carbonization of tungsten and carbon powders were studied by industrial experiments,and were further verified by practice in industrial production of WC powders.The results show that the carbonization rate will accelerate while more initiatory mixtures of tungsten and carbon powders are loaded in the graphite boat,and unit energy consumption decrease with the increase of raw materials load.And the quantitative relations have also been established,which hold good for industrial production of WC powders with various particle sizes from ultra fine to coarse one.The investigations also rectify the conventional concept mentioned above for the industrial production of WC powders and improve production efficiency.
出处
《粉末冶金材料科学与工程》
EI
2010年第6期597-600,共4页
Materials Science and Engineering of Powder Metallurgy
基金
国家科技支撑计划资助项目(2007BAE05B01)
关键词
碳化
WC粉末
装舟量
能耗
生产效率
carbonization
WC powders
raw materials load
unit energy consumption
production efficiency
