Abstract: The addition of auxiliary alternating magnetic field is effective for improving the forming quality of high hardness cladding layer by laser cladding. A kind of simple mechanical sine wave electromagnetic field generator with adjustable frequency and amplitude modulation was designed. In the process of laser cladding, a class of sinusoidal alternating magnetic field was applied. By changing the magnetic field strength and frequency, single channel and multi-channel high hardness cladding layer were prepared on the Q235A surface. Based on the detection of macro and micro measurement of cladding layer. The effects of alternating magnetic field on the geometric characteristics, dilution rate and microstructure of the cladding layer were studied. Research results showed that when the magnetic field frequency and amplitude changed, the width fluctuation range of cladding layer was very narrow, and the average remained unchanged. The height and the contact angle of the cladding layer would decrease with the increase of the magnetic field intensity. The dilution rate was not affected by the parameters variation of the magnetic field. In the magnetic field, the hole in cladding layer would migrate to the surface of the cladding layer, the microstructure of cladding layer was more uniform and compact.
郑丽娟, 付宇明, 宗磊, 齐童. 交变磁场对高硬熔覆层成型质量的影响[J]. 材料导报, 2018, 32(6): 905-908.
ZHENG Lijuan, FU Yuming, ZONG Lei, QI Tong. Effect of Alternating Magnetic Field on the Forming Quality of High Hardness Clad Layer. Materials Reports, 2018, 32(6): 905-908.
1 Yuan Q L,Feng X D,Cao J J,et al.Research progress in laser cladding technology[J].Materials Review A:Review Papers,2010,24(3):112(in Chinese). 袁庆龙,冯旭东,曹晶晶,等.激光熔覆技术研究进展[J].材料导报:综述篇,2010,24(2):112. 2 Zhang D D,Shi Y,Liu J,et al.Research on controlling the crack in laser cladding of high hardness coating[J].Applied Laser,2014,34(1):1(in Chinese). 张栋栋,石岩,刘佳,等.激光熔覆高硬涂层裂纹控制研究[J].应用激光,2014,34(1):1. 3 Qiao H,Li Q T,Fu H G,et al.Effect of processing parameters on microstructure and hardness of Fe-Cr-B alloy coating by laser cladding[J].Transactions of Materials and Heat Treatment,2014,35(2):164(in Chinese). 乔虹,李庆棠,符寒光,等.激光熔覆工艺参数对Fe-Cr-B合金涂层组织和硬度的影响[J].材料热处理学报,2014,35(2):164. 4 Li D Y,Zhao L Z,Zhang J,et al.Influence of ultrasonic vibration on temperature field of TiC/FeAl composite coating in laser cladding[J].Heat Treatment of Metals,2015,40(3):190(in Chinese). 李德英,赵龙志,张坚,等.超声振动对激光熔覆TiC/FeAl复合涂层温度场的影响[J].金属热处理,2015,40(3):190. 5 Liu H X,Tao X D,Zhang X W,et al.Microstructure and interface distribution of Fe-Cr-Si-B-C laser cladding alloy coatings assisted by mechanical vibration[J].Optics and Precision Engineering,2015,23(8):2192(in Chinese). 刘洪喜,陶喜德,张晓伟,等.机械振动辅助激光熔覆Fe-Cr-Si-B-C涂层的显微组织及界面分布形态[J].光学精密工程,2015,23(8):2192. 6 Yu B H,Hu X H,Wu Y E,et al.Studies of the effects and mechanism of electromagnetic stirring on the microstructures and hardness of laser cladding WC-Co based alloy coating[J].Chinese Journal of Lasers,2010,37(10):2672(in Chinese). 余本海,胡雪惠,吴玉娥,等.电磁搅拌对激光熔覆WC-Co基合金涂层的组织结构和硬度的影响及机理研究[J].中国激光,2010,37(10):2672. 7 Cai C X,Liu H X,Jiang Y H,et al.Influence of AC magnetic field on microstructure and wear behaviors of laser cladding Fe-based composite coating[J].Trigbology,2013,33(3):229(in Chinese). 蔡川雄,刘洪喜,蒋业华,等.交变磁场对激光熔覆Fe基复合涂层组织结构及其耐磨性的影响[J].摩擦学学报,2013,33(3):229. 8 Liu H X,Ji S W,Jiang Y H,et al.Microstructure and property of Fe60 composite coatings by rotating magnetic field auxiliary laser cladding[J].Chinese Journal of Lasers,2013,40(1):121(in Chinese). 刘洪喜,纪升伟,蒋业华,等.旋转磁场辅助激光熔覆Fe60复合涂层的显微组织与性能[J].中国激光,2013,40(1):121.
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2018, Vol. 32 
