In this study, an optimum feedstock has been developed for additive manufacturing of 4605 steel powder through fused deposition modelling and sintering process using the response surface methodology. For this purpose, 15 feedstock samples containing four part binder system of paraffin wax (PW), polypropylene (PP), carnauba wax (CW), and stearic acid (SA) were compounded with 4605 powder. The rheological, physical and mechanical properties of the samples were measured and optimized with the aim of increasing the strength, density of the final part and reducing the viscosity of the feedstock. The results showed that increase in the percentage of SA and PW reduces the viscosity of the feedstock while increase in PP results in increase in density and strength. Finally, the optimum feedstock is suggested to have 61 wt% of PW, 25 wt% of PP, 10 wt% of CW, and 4 wt% of SA along with 90 wt% of steel powder.

在这项研究中，通过使用响应面方法的熔融沉积建模和烧结工艺，为 4605 钢粉的增材制造开发了一种最佳原料。为此，将含有石蜡 (PW)、聚丙烯 (PP)、巴西棕榈蜡 (CW) 和硬脂酸 (SA) 四部分粘合剂体系的 15 个原料样品与 4605 粉末复合。对样品的流变、物理和机械性能进行了测量和优化，目的是提高最终部件的强度、密度并降低原料的粘度。结果表明，SA和PW百分比的增加降低了原料的粘度，而PP的增加导致密度和强度的增加。最后，建议最佳原料为 61 wt% 的 PW、25 wt% 的 PP、10 wt% 的 CW，