镍基碳化钨合金粉末激光熔覆工艺的研究
Research on Technological Parameters of Laser Cladding Ni-based Alloy with WC
付宇明, 高中堂, 郑丽娟
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作者单位:(燕山大学 机械工程学院, 河北 秦皇岛 066004)
中文关键字:激光熔覆; 镍基合金; 工艺参数; 宏观形貌; 微观组织
英文关键字:laser cladding; Ni-based alloy; technological parameters; macro-morphology; microsturcture
中文摘要:采用同步送粉方式在16Mn钢表面熔覆镍基碳化钨合金粉末。通过对不同激光熔覆工艺参数下的宏观形貌以及微观组织进行研究分析, 较详细地探讨激光熔覆功率以及扫描速度对熔覆层熔覆质量的影响。 通过对不同工艺参数下的熔覆层进行显微组织分析以及EDS能谱分析,对熔覆层微观组织种类﹑分布以及碳化钨硬质相组织分布不均匀性进行研究,总结出激光工艺参数对熔覆层的影响规律。最后得出镍基粉末 + 30%碳化钨(钴包WC)粉末在功率3.0 kW、熔覆速度1000 mm/min的工艺参数下为最佳熔覆效果。
英文摘要:Ni-based alloy with WC was prepared on the surface of 16Mn steel using laser cladding technological. The effects of laser power and scanning speed on the quality of cladding layer were detailed discussed through observing the macroscopic morphology and microstructure at different technological parameter. The type and distribution of the cladding layer microstructure and tissue distribution of tungsten carbide hard phase were studied by microstructure and EDS analysis. The effect rules of laser cladding parameters on the quality of cladding layer were summarized. The conclusion show that Ni-based alloy with 30%WC has the best result in the power of 3.0 kW and cladding speed 1000 mm/min can be obtained.