激光与光电子学进展, 2018, 55 (9): 091403, 网络出版: 2018-09-08   

激光选区熔化扫描策略对钛合金成形精度的影响 下载: 977次

Effect of Scanning Strategy on Forming Precision of Titanium Alloy by Selective Laser Melting
作者单位
1 江南大学机械工程学院, 江苏 无锡 214122
2 国家增材制造产品质量监督检验中心(江苏), 江苏 无锡 214101
摘要
通过不同的扫描策略激光选区熔化(SLM)成形了钛合金样件, 分析了扫描策略对成形精度的影响。结果表明, 成形件侧表面的粗糙度受扫描策略的影响较大, 单向和Z型扫描策略成形件平行于扫描方向的侧表面粗糙度小于垂直于扫描方向的; 螺旋线扫描策略成形件的整体翘曲偏差范围较小, 外形结构较精准; 三种扫描策略成形件的外形长宽尺寸比设计模型减小了1~2 mm, 而其他特征结构尺寸与设计模型相近。螺旋线扫描策略成形件的整体成形精度优于单向和Z型扫描策略。
Abstract
The titanium alloy samples are formed by selective laser melting (SLM) based on different scanning strategies, and the effect of scanning strategy on forming precision is analyzed. The results show that the roughness on lateral surface of forming part is strongly affected by the scanning strategy. The roughness on lateral surface of forming part by one-way scanning or Z-scanning strategies parallel to the scanning direction is better than that on the lateral surface perpendicular to the scanning direction. The degree of bending curvature of forming part by the spiral scanning strategy is relatively small and its shape structure is relatively accurate. Compared with the design model, the length and width of forming part by these three scanning strategies are reduced by 1-2 mm, while the other sizes are close. The whole forming precision of forming part by spiral scanning strategy is better than those by one-way scanning and Z-scanning strategies.

葛亚楠, 武美萍, 冒浴沂, 韩基泰. 激光选区熔化扫描策略对钛合金成形精度的影响[J]. 激光与光电子学进展, 2018, 55(9): 091403. Ge Yanan, Wu Meiping, Mao Yuyi, Han Jitai. Effect of Scanning Strategy on Forming Precision of Titanium Alloy by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2018, 55(9): 091403.

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