采用组元相同但配比不同的两种石蜡基粘结剂,研究粉末注射成形制备纯铜件时其缺陷的成因及影响因素。研究表明,通过优化注射参数,可防止制品缺陷的产生。在注射温度为155℃、注射压力为110MPa、注射速度为40m/s、锁模力为90MPa、保温时间为10s时,注射试样可达到预期效果。 Two kinds of paraffin-based binders with the same components and different proportions were used to study the causes and influencing factors of the defects when the pure copper parts were prepared by powder injection molding. Research shows that by optimizing the injection parameters, to prevent product defects. Injecting temperature of 155 ℃, injection pressure of 110MPa, injection speed of 40m / s, clamping force of 90MPa, holding time of 10s, the injection of the sample can achieve the desired results.