温压压制压力强化因子及压制曲线的唯象分析

介绍了一种使用钢铁粉末室温压制回归方程来建立其温压压制方程的分析方法。粉末和模具温度、装粉高度通过压力强化因子影响温压生坯密度。温压压制方程描绘的压制曲线与实验数据相符合。曲线表明装粉高度增加时,粉末和模具加热温度应当降低。对于某些装粉高度温压失去有效性。

Phenomenological Modeling of Warm-Compaction Enhanced Factor for Compacting Pressure and Compaction Curve

A phenomenological modeling approach for establishing warm-compaction equation and curves through modifying regression equation of room-compaction curve is presented. An enhanced factor of compaction pressure is introduced into the equation to reveal effects of powder/die temperature, filling height of powder on green density.Compaction curve resulting from this equation is consistent with experimental data of ATOMET grade iron powders. The curves show that the powder/die temperature should reduce as filling heights of powders increase and that in some cases warm compaction can not give rise to high green density.