ZHANG Mei-mei, LIU Bin, BAI Pei-kang
（School of Materials Science and Engineering, North University of China, Taiyuan 030051, China）
Abstract： In consideration of the special environmental conditions of coal equipment in mining, the seamless steel tube of hydraulic prop made of 20# carbon steel was taken as the substrate, and 316L stainless steel powder was used to clad the substrate by a fiber-coupled semiconductor laser. The microstructure of the cladding layer was determined by metalloscope. The hardness, wear resistance and corrosion resistance of the cladding layer were measured.The results show that metallurgy binding interface between the cladding layer and the substrate is obtained without defects such as cracks and pores. The hardness of the cladding layer is much higher than that of the matrix, and the wear resistance and corrosion resistance are simultaneously better. According to the analysis, it is summarized that the improvement in performance of the cladding layer is closely related to the change of microstructure and the thermal effect in the cladding process.The maximum hardness occurs in the equiaxed zone, and with the grain coarsening, the hardness reduces simultaneously. In addition, the precipitated phase, hard particles and trace elements also have a great influence on the properties of the cladding layer, and they will prevent the surface from abrasion and reduce the plastic deformation of the matrix.It is verified that the 316L stainless steel is suitable for the 20# steel in laser cladding repairing process. Since this study focused on coal machine equipment parts, it has certain practical significance for the repair of hydraulic equipment.
Key words： laser cladding; hydraulic support tube; 316L stainless teel; hardness; corrosion resistance; wear resistance
CLD number： TG178 Document code： A
Article ID： 1674-8042（2017）02-0154-08 doi： 10.3969/j.issn.1674-8042-2017-02-007
References
［1］WANG Zhi-hua. Corrosion mechanism and protection techniques of columns of hydraulic supports. Mining and Processing Equipment, 2011, 39(9)： 16-18.
［2］SHAN Ji-guo, DONG Zu-jue, XU Bin-shi. Development of surfacing technology and status of its application in basic industries. China Surface Engineering, 2002, 15(4)： 19-22.
［3］WANG Dong-sheng, HUANG Yin-hui, TIAN Zong-jun, et al. Research status of surface coating technology for TiAl alloy. Materials Review, 2007, 21(11)： 72-75.
［4］ZHA Sen-lin, WANG Dong-sheng. Discussion on current status of domestic mining machinery remanufacturing. Mining and Processing Equipment, 2012, 40(3)： 1-6.
［5］LI Sheng, HAN Li-fa, ZHANG Xiao-ping, et al. Compare on laser cladding and argon arc cladding, covered electrode arc cladding. Hot Working Technology, 2011, 40(15)： 125-128.
［6］ZHANG Jian, WU Wen-ni, ZHAO Long-zhi. Research progress and development trend of laser cladding. Hot Working Technology, 2013, 42(6)： 131-134.
［7］WANG Qi-ming. Breakthroughs and development of semiconductor laser in China. Chinese Journal of Lasers, 2010, 37(9)： 2190-2197.
［8］Price K, Leisher P, Karisen S, et al. KW-class industrial diode lasers comprised of single emitters. In： Proceedings of SPIE, 2010, 7583(5)： 462-470.
［9］Yasa E, Deckers J, Kruth J. The investigation of the influence of laser re-melting on density, surface quality and microstructure of selective laser melting parts. Rapid Prototyping Journal, 2011, 17(5)： 312-327.
［10］Yamada A K， Morisita S， Kutsuna M， et al. Direct diode laser cladding of Co based alloy to dual phase stainless steel for repairing the machinery parts. In： Proceedings of SPIE， 2003, 4831： 65-70.
［11］ZHAO Xing-ming, WAN Rong-chun, SI Song-hua, et al. Microstructure and wear resistance of laser cladding Fe+B4C composite coating. Journal of Anhui University of Technology, 2007, 24(3)： 257-260.
［12］ZHAO Hui-you, CHEN Hua-hui, SHAO He-sheng, et al. The study on the corrosion erosion wear behaviour and wear mechanism of several steels. Tribology, 1996, 16(2), 112-119.
［13］YAN Mi, ZHANG Xiao-xing. Influence of ytterbium on microstructure and corrosion resistance of electroless-deposited Ni-P coatings. Chinese Journal of Rare Metals, 2005, 29(3), 285-288.
［14］HAN Wen-jing, ZHANG Pei-xun, TANG Qi-jian, et al. Property of laser cladded Ni60A+20%WC alloy of cylinder of single hydraulic support. Journal of the China Coal Society, 2012, 37(2)： 340-343.
［15］XIE Wen-Zheng, LI Chun-qiang, YANG Zhi-wei, et al. Study on application of laser cladding technology in hydraulic supports. Coal Mine Machinery, 2010, 31(10)： 106-108.
［16］YANG Qing-dong, SU Lun-chang, DONG Chun-chun, et al. Properties of Fe-based alloy cladding layers on hydraulic support column steel 27SiMn. China Surface Engneering, 2013, 26 (6)： 42-47.
［17］CAO Zheng-hong, DUAN Xiu-lan. Application of semiconductor laser cladding technique in mining eqmpment remanufacturing. Modern Manufacturing Technology and Equipment, 2013, 18(6)： 55-56.
［18］XU Guo-jian, ZHONG Li-ming, HANG Zheng-xiang, et al. Welding performances of galvanized sheet using the fiber coupled diode laser. Laser and Option electronics Progress, 2014, 51(7)： 78-82.
［19］WANG Li-jun, PENG Hang-yu, ZHANG Jun. Advance on high power diode laser coupling. Chinese Optics, 2015, 8(4)： 517-534.
［20］WENG Fei, CHEN Chuan-zhong, YU Hui-jun. Research status of laser cladding on titanium and its alloys： A review. Materials and Design, 2014, 58： 412-425.
［21］Kim H J, Yoon B H, Lee C H. Wear performance of the Fe-based alloy coatings produced by plasma transferred arc weld-surfacing process. Wear, 2001, 249(10/11)： 846-852.
［22］Berns H, Fischer A. Microstructure of Fe-Cr-Chard facing alloys with additions of Nb, Ti and B. Metallography, 1987, 20(4)： 401-429.
［23］Sedriks A J. Corrosion of stainless steel. New York： John Wiley and Sons, 1979： 77-93.
［24］Archard J F. Contact and rubbing of flat surfaces. Journal of Applied Physics, 1953, 24(8)： 981-988.
液压支架管激光熔覆316L不锈钢涂层组织与性能研究
张美美， 刘斌， 白培康
（中北大学 材料科学与工程学院， 山西 太原 030051）
摘要： 基于煤机设备在特殊环境下的使用特点， 选择液压支柱管用20钢作为基体材料， 以316L不锈钢作为熔覆材料， 采用高功率半导体光纤耦合激光器在其上进行激光熔覆实验， 并对熔覆后涂层的形貌、 硬度、 耐蚀性以及耐磨性进行研究。 结果表明， 熔覆层与基体呈现出较好的冶金结合， 且并未出现明显裂纹、 孔洞等缺陷； 此外， 熔覆层的硬度、 耐蚀性和耐磨性相对基体都有了很大的提高。 根据分析可知， 熔覆层性能的提高是与熔覆过程中显微组织的变化及热影响密切相关的， 熔覆层中的析出相、 硬质颗粒以及合金中的微量元素也对其性能有很大影响。 研究表明316L不锈钢作为一种良好的熔覆材料， 可用于煤机设备液压支架管的激光熔覆修复。 研究以液压设备用零件为对象， 因此对于煤机修复方面有重要的参考价值。
关键词： 激光熔覆； 液压支架管； 316L不锈钢涂层； 硬度； 耐腐蚀性； 耐磨性
引用格式： ZHANG Mei-mei, LIU Bin, BAI Pei-kang. Microstructure and properties of laser cladding of 316L stainless steel on hydraulic support tube. Journal of Measurement Science and Instrumentation, 2017, 8(2)： 154-161. ［doi： 10.3969／j.issn.1674-8042.2017-02-007］162Journal of Measurement Science and InstrumentationVol-8 No-2, Jun- 2017ZHANG Yong-mei, et al. ／ Study on structural stability, elastic and electronic properties for β-Ti under pressure ...Journal of Measurement Science and InstrumentationVol-8 No-2, Jun- 2017
[full text view]
