对平均粒度为30μm的316L不锈钢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;优选出适宜316L不锈钢粗粉的脱脂工艺及烧结工艺;烧结试件得到了理想的力学性能,抗拉强度630MPa,屈服强度280MPa,延伸率52%,硬度69.5HRB,并评价了其耐蚀性.
316L stainless steel by injection molding using coarser powder with particle size of 30um 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 got. The sintered part is provided with the ideal mechanical property, tensile strength is 630MPa, yield strength is 280MPa, elongation is 52%, hardness is 69.5HRB, corrosion resisting property was evaluated.
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