等离子熔积/铣削复合直接制造高温合金双螺旋整体叶轮

采用等离子熔积与铣削复合制造技术，在等离子熔积成形过程中复合铣削精整，试制了难加工高温合金双螺旋整体叶轮样件，其组织性能和力学性能均高于采用传统工艺加工获得的叶轮。该技术解决了现有高能束熔积成形技术因无支撑和台阶效应造成的尺寸精度和表面质量不高的瓶颈问题，是难加工材料零件短流程、低成本、高质量无模精确制造的新的有效加工方法。

Directly Manufacturing of Superalloy Double Helix Integrated Impeller by Hybrid Plasma Deposition & Milling

A superalloy double helix integrated impeller with good performances of dimensional precision,microstructure and mechanics was rapidly manufactured by HPDM(hybrid plasma deposition & milling) method proposed by author's, laboratory,which synthesized plasma deposition as an additive technology,and milling as a subtractive technique during the processing.Compared with the existing RP methods using high energy density beams,the HPDM method solved the key problems of insufficient dimensional precision and surface quality caused by the step effect and no-supporting,and puts forward a new way to directly manufacture the Difficult-to-Machining materials parts with short-routine,low-cost and high quality.