摘要
运用经典动力学和缩聚理论的基本观点对铸铁中石墨形态及形成机理进行了分析研究。结果表明：浇注后的铁水内部由于温度降低而析出的石墨融乳液滴的缩聚与扩散能力，金属液体的粘度及其内部各处由于存在温度梯度而产生的温差点电势场的变化率，导磁性元素硅的晶体四块的自旋速率，其它合金元素的相互影响乃是决定铸铁中石墨形态的关键因素。同时认为，矽晶体团块自旋动量的最大值只有在温差点电势场湮灭的瞬间取得。
The state and forming mechanism of graphite in cast iron are analysed with classical dynamics and polycondensation theory. It is showed according to the research that the keys to determine the state of graphite in cast iron include the followings: polycondensing and deffusing ability of melted graphite drop seperated out from melten iron because of temperature descent after casting; viscosity of melted metal; variation of thermoelectric potential field at various points within melted metal come from temperature gradient; spin rate of crystal mass of magnet - conduction element St; affection from other alloy elements. And it is considered that the maximum of spin momentum of St crystal mass can only appear at the moment when the point thermo electrical potential field dies out.
出处
《河北冶金》
1996年第2期45-47,共3页
Hebei Metallurgy
