镍基高温合金选择性激光熔化的工艺参数

Study on nickel-based superalloy selective laser melting process parameters

为研究不同工艺参数对镍基高温合金选择性激光熔化成形质量的影响,通过单层单道实验,分析激光功率、扫描速度和铺粉厚度等工艺参数对熔化道的宽度、连续程度和表面质量的影响.结果表明：当前实验条件下,合理的工艺参数取值范围为激光功率250 ～ 300 W,扫描速度600～800 mm/s,铺粉层厚0.02 ～0.03 mm.该研究成果可以为后续的块体成形综合性能研究奠定基础.

This paper is a study on the effect of various process parameters on the nickel-base super- alloy selective laser melting forming quality. The study, based on single single-channel experiments, ana- lyzes the effect of laser power, scanning speed, and dusting thickness and other process parameters on the melting channel width, the degree of continuity and surface quality. The results show that, under the cur- rent experimental conditions, the reasonable process parameter ranges are 250 W for the laser power, 600 mm / s for the scanning speed , and 0.02 mm for dusting thickness. The research may lay the foun- dation for a comprehensive study of the performance of the subsequent block shape.