Methods and Mechanism of Powder Mixing for Selective Laser Melting

Selective laser melting (SLM) technology has strict demand to its powder materials which is needed be spread evenly and conducted sintering layer by layer. Therefore, the uniformity flatness of bed are basic conditions for processing. Ball milling an important composite preparation process SLM. Three kinds ball processes, dry milling, wet hollow with various parameters adopted prepare TC4 / TiB2 powder. It concluded that a balling time 8 h at speed 230 rpm without proved optimal working condition make maintain good spherical shape ensure mixing uniformity. The mechanism three effects revealed analyzing dynamic relationship hardness ball, particle. This work provides reference high quality