黄梓麟,王罡,魏绍鹏,李长虹,融亦鸣

• 1:北京交通大学机械与电子控制工程学院
• 2:清华大学机械工程系精密超精密制造装备及控制北京市重点试验室
• 3:南方科技大学机械与能源工程系

摘要(Abstract)：

首先基于响应曲面设计了单道次热丝熔覆试验,选取激光功率、扫描速度、送丝速度和熔覆电流作为变化因子,定义了体积缺陷率,与熔覆层宽度、高度共同作为目标响应,分析了单因子和多因子交互作用对响应的影响规律,建立了反映单道次熔覆工艺参数和成形质量关系的回归模型和经验公式。当选择较大的激光功率和送丝速度,适中的扫描速度和熔覆电流作为工艺参数组合时,激光热丝熔覆单道次成形质量最佳。其次建立多道次熔覆的搭接率模型,准确确定了搭接率参数,提高激光热丝多道次熔覆的成形质量。最后根据多道次熔覆截面微观组织的表征,可以看到在最佳工艺参数下,熔覆层与基体结合良好,金相组织均匀,无杂质气孔以及未熔合缺陷,验证了本文通过响应曲面法建立的工艺参数与响应变量之间关系模型和多道次熔覆搭接率模型的准确性。

关键词(KeyWords)： 激光热丝熔覆;响应曲面法;工艺参数分析;成形质量;搭接率

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973计划)(2011CB013404)

作者(Author): 黄梓麟,王罡,魏绍鹏,李长虹,融亦鸣

DOI: 10.13289/j.issn.1009-6264.2016.s1.028

参考文献(References)：

• [1]郑世卿,温鹏,单际国.激光热丝焊接过程焊丝过渡行为及其稳定性的研究[J].中国激光,2014,41(4):0403008.ZHENG Shi-qing,WEN Peng,SHAN Ji-guo.Research on wire transfer and its stability in laser hot wire welding process[J].Chinese J Laser,2014,41(4):0403008.
• [2]张光钧,吴培桂,许佳宁,等.激光熔覆的应用基础研究进展[J].金属热处理,2011,36(1):5-13.ZHANG Guang-jun,WU Pei-gui,XU Jia-ning,et al.Development of basic research for application of laser cladding technology[J].Heat Treatment of Metals,2011,36(1):5-13.
• [3]徐滨士,方金祥,董世运,等.FV520B不锈钢激光熔覆热影响区组织演变及其对力学性能的影响[J].金属学报,2016,52(1):1-9.XU Bin-shi,FANG Jin-xiang,DONG Shi-yun,et al.Heat-affected zone microstructure evolution and its effects on mechanical properties for laser cladding FV520B stainless steel[J].Acta Metallurgica Sinica,2016,52(1):1-9.
• [4]Wei S,Wang G,Nie Z,et al.Microstructure evolution of martensitic stainless steel in laser hot wire cladding with multiple heating passes[C].TMS2016 Supplemental Proceedings,Nashville,191-197.
• [5]徐鹏,林成新,周超玉,等.激光熔覆304不锈钢涂层的工艺及组织[J].材料热处理学报,2013,34(7):142-146.XU Peng,LIN Cheng-xin,ZHOU Chao-yu,et al.Preparation and microstructure of 304 stainless steel layer by laser cladding[J].Transactions of Materials and Heat Treatment,2013,34(7):142-146.
• [6]Wen P,Feng Z H,Zheng S Q.Formation quality optimization of laser hot wire cladding for repairing martensitic precipitation hardening stainless steel[J].Optics&Laser Technology,2015,65:180-188.
• [7]田威,廖文和,许波,等.基于回归分析的激光熔覆几何特征模型修正[J].材料热处理学报,2012,33(S1):110-114.TIAN Wei,LIAO Wen-he,XU Bo,et al.Revision of geometrical feature model of laser cladding based on regressive analyses[J].Transactions of Materials and Heat Treatment,2012,33(S1):110-114.
• [8]Zhenguo Nie,Gang Wang,James D.Mc Guffin-Cawley,et al.Experimental study and modeling of H13 steel deposition using laser hot-wire additive manufacturing[J].Journal of Materials Processing Technology,2016,23:171-186.
• [9]Zilin HUANG,Gang WANG,Shaopeng WEI,et al.Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method[J].Front Mech Eng,2016,doi:10.1007/s11465-016-0397-7.
• [10]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):164-168.QIAO Hong,LI Qing-tang,FU Han-guang,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):164-168.
• [11]贺长林,陈少克,周中河.激光熔覆工艺对镍基碳化钛熔覆层组织的影响[J].金属热处理,2014,39(7):111-116.HE Chang-lin,CHEN Shao-ke,ZHOU Zhong-he.Effect of laser cladding process on microstructure of nickel-base titanium carbide cladding layer[J].Heat Treatment of Metals,2014,39(7):111-116.

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