| 激光直写标志牌专用熔覆粉末的设计及分析 |
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| 引用本文： | 柳家良,刘顺洪,武永亮,段元威. 激光直写标志牌专用熔覆粉末的设计及分析[J]. 激光技术, 2011, 35(2): 177-181. DOI: 10.3969/j.issn.1001-3806.2011.02.010 |
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| 作者姓名： | 柳家良 刘顺洪 武永亮 段元威 |
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| 作者单位： | 1.华中科技大学材料科学与工程学院, 武汉, 430074 |
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| 摘 要： | 为了研制激光直写标志牌系统所需的专用熔覆粉末,以满足铁路货车用耐候钢Q450NQR1凸字型标志的要求,采用均匀设计与优化的方法,对熔覆合金粉末的成分进行了理论分析和试验验证,取得了不同成分下熔覆层的外观形貌、硬度、腐蚀失重及失重率等数据.结果表明,当合金成分的质量分数为W(Ni)=0.20～0.22,W(Cr)=0.1...
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| 关 键 词： | 激光技术 激光熔覆 自熔性粉末 耐候钢Q450NQR1 |
| 收稿时间： | 2010-06-10 |
Design and analysis of the cladding powder for laser direct writing signs |
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| LIU Jia-liang,LIU Shun-hong,WU Yong-liang,DUAN Yuan-wei. Design and analysis of the cladding powder for laser direct writing signs[J]. Laser Technology, 2011, 35(2): 177-181. DOI: 10.3969/j.issn.1001-3806.2011.02.010 |
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| Authors: | LIU Jia-liang LIU Shun-hong WU Yong-liang DUAN Yuan-wei |
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| Abstract: | In order to develop special cladding powder for laser direct writing signs,and obtain convex shaped logo on weathering steel Q450NQR1 used in railway freight cars,based on uniform design and optimization,the composition of alloy powder was analyzed in theory and confirmed in experiments,and the data of appearance,hardness,corrosion weight loss and corrosion loss rate were obtained for different component.The results indicate that when the mass fraction of alloy composition is w(Ni)=0.20～0.22,w(Cr)=0.14～0.155,w(Si)=0.01～0.015,w(B)=0.005～0.006,and Fe as the remainder,the obtained cladding layer has beautiful appearance,metallurgical bonding with the substrate,and better atmospheric corrosion resistance than the base metal.The result is helpful for application of the system of laser direct writing signs on railway wagons industry. |
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