【摘要】 对平均粒度为60μm的Fe-Ni-Cu-C合金粗粉进行了注射成形。采用正交试验法,以生坯三点抗弯强度和生坯密度作为依据,研究了注射参数对生坯质量的影响,得到了理想的脱脂和烧结工艺。结果表明:在1225℃,H2和N2比为1∶3时得到的烧结件具有最好的力学性能,其抗拉强度为360MPa,屈服强度为171MPa,硬度为54HRB。更多还原

【Abstract】 Fe-Ni-Cu-C mixed powder by injection molding using coarser powder with particle size of 60um was studied.The effect of injection parameters to the quality of green was studied by orthogonal arrays design and statistical analysis method according to the density and strength of the green part.The right debinding and sintering processes were obtained.Results indicated that the sintered part is provided with the best mechanical property when the proportion of H2 and N2 is 1∶3 and the sintering temperature is 1225℃,at which,the tensile strength is 360MPa,yield strength is 171MPa and hardness is 54HRB.更多还原