从温压的压制压力、压制温度、压坯中铁粉颗粒的显微硬度和润滑剂在压坯中的分布等方面对温压过程致密化机制作了分析．结果表明，温压过程中铁粉的固结规律基本上与传统压制过程的相同．温压压坯密度比传统压制提高的值相当于相同压制压力下有效压制压力的增大．温压温度的作用在于延缓铁粉压制过程的加工硬化程度和提高铁粉的塑性变形能力．润滑剂在最佳的温压温度下具有粘流性，部分被挤出压坯，有效地减小铁粉颗粒之间及颗粒与模壁之间的摩擦，降低了脱模压力． The densification mechanism of temperature and pressure process was analyzed from the pressing pressure of warm pressing, the pressing temperature, the microhardness of iron powder in the compact and the distribution of lubricant in the compact. The results show that the consolidation law of iron powder is basically the same as the traditional pressing process. Pressurized green compacts increased in density by as much as the traditional compaction increased the effective compaction pressure at the same compaction pressure. The effect of temperature and pressure temperature is to delay the degree of work hardening of the iron powder pressing process and improve the plastic deformation ability of the iron powder. The lubricant has viscous flow at the optimum temperature and pressure and is partially extruded out of the compact, effectively reducing the friction between the iron powder particles and between the particles and the mold wall, and reducing the release pressure.