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.
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