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Materials Science in Additive Manufacturing                     Increasing density and strength in binder jetting



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                                  Figure 1. (A) Powder size distributions of SS316L groups. (B) Powder morphology.

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                               Figure 2. Example of green 10 µm group size samples. (A) Bars (mm). (B) Cylinders (mm).

                                                               Table 3. Printing process parameters
                                                                Parameter              Particle size groups
                                                                                10   20   30   40   30+10   40+10
                                                                                µm  µm   µm  µm    µm    µm
                                                               Layer thickness (µm)   Ranged from 100 to 115
                                                               Desired saturation (%)   65 in all size groups
                                                               Rotation speed (rpm)    500 in all size groups
                                                               Traverse speed (mm/s)    3 in all size groups
                                                               Recoat speed (mm/s)  30  30  60  60  60   60
                                                               Bed temperature (°C)     55 in all size groups
                                                               Bed drying time (s)  5  5  10  10   15    15



            Figure 3. Build layout for each powder size group.




            Volume 1 Issue 3 (2022)                         4                      https://doi.org/10.18063/msam.v1i3.20
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