【摘要】 研究电解铜粉高速压制成形工艺,探讨冲击能量、压制次数对生坯密度、最大冲击力和脱模力的影响。结果表明:当冲击能量为6076J时,试样的生坯密度达到最大,为8.42g/cm3,相对密度约为95%;当冲击能量相同时,采用两次压制制备的试样的生坯密度较单次压制的高且前者的脱模力较低。高速压制过程中,最大冲击力随冲击能量的增加而逐渐增大,而脱模力较低,仅在45~90kN之间变化。更多还原

【Abstract】 The high velocity compacting process of electrolytic copper powder was studied. The effects of impact energy and impact times on the green density, the maximal impact force and the withdraw force of specimen were investigated. The results indicate that the maximum of green density is 8.42 g/cm3 and its relative density is about 95% when the impact energy is 6 076 J. The green density of specimen fabricated by two impacts is better and the withdraw force is lower than that of specimen fabricated by single impact when the whole impact energy is identical. During the compaction the maximal impact force is increased with impact energy increasing, while the withdraw force is lower and changes between 45 kN and 90 kN.更多还原