Development of Direct Rapid Manufacturing Technology for Metal Parts

摘要

Directly driven by CAD model, based on principle of discrete-superposition, rapid prototyping (RP) technology is the generic terms of rapid manufacturing 3-dimensional physical entities with any complex shape. So far, there are many methods about direct rapid manufacturing for metal parts by utilizing high energy beam (laser-beam, electronicbeam and plasma-beam) or not. The former contains selective laser melting (SLM), selective laser sintering (SLS), laser engineered net shaping (LENS), electron beam melting (EBM), plasma deposition manufacturing (PDM) and other derivative technologies. The latter comprises 3D printing (3DP) and ultrasonic consolidation. Integrating design of structure & material, preparation of new-type material along with forming & processing, digital direct rapid manufacturing for metal parts represents development direction of advanced manufacturing technology.