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179. Laser sintering of metal powder conditions?

1. Use of high power laser (1000w above) scan of the sintered metal powder, layer by layer stack molding, molding pieces to complete the post-processing by surface molds, production molds can be used as die-casting dies, forging dies used. 2.optomec the company in 1998 and 1999, respectively, introduced the LENS-50, LENS-1500 models of steel alloy, iron-nickel alloys, titanium, nickel alloys, titanium, tantalum and nickel-aluminum alloy as the raw material, the use of laser technology, the metal Direct melting deposition modeling, the production of metal parts strength of the traditional method of production of metal parts, precision in the xy plane of up to 0.13mm, z direction of 0.4mm, but the high surface roughness, the equivalent level of sand casting surface finish, in the for finishing before use. 3. China has carried out this year's research work in this area, Northwestern Polytechnical University, Beijing University of Aeronautics produced by this method high temperature alloy parts, Tsinghua University is also carrying out this work. Huazhong University of Science at the international level, a laser - plasma hybrid rapid prototyping technology, namely the use of high-power laser sintering melting metal powder layer by layer, layer by layer using plasma profile shaping of the entity to obtain a high surface precision metal parts or mold.