钨粉的平面动载压实

 本文研究了粒度为3 μm与20 μm两种钨粉的平面动载压实。证明粒度较小的钨粉在压实后分层严重，中层疏松。要得到良好的压实件，钨粉要有一定值以上的粒度，碰撞速度要在1 100 m/s以上，钨粒中要配以一定量的钴、镍、铁粘结相。这些能用Carroll和Holt的球壳模型作的数值模拟计算清楚说明。

THE PLANAR DYNAMIC COMPACTION OF TUNGSTEN POWDER

In this paper we study the planar dynamic compaction of tungsten powder with the granular size of 3 μm and 20 μm. It is shown experimentally that the tungsten powder with smaller granular size cannot be well compacted. Its compacted sample has severe layer division. In order to obtain well-compacted sample, the tungsten powder must have the granular size more than 20 μm, the velocity of compaction must be greater than 1 100 m/s, and the tungsten powder must be mixed with cohesive phase composed by the cobalt, nickel and iron powder. All these can be well explained by the numerical calculation which is performed by use of the spherical shell model proposed by Carroll and Holt in 1972.