Frontiers of Mechanical Engineering >

2016 , Vol. 11 >Issue 3: 242 - 249

DOI: https://doi.org/10.1007/s11465-016-0397-7

RESEARCH ARTICLE

Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method

  • Zilin HUANG 1 ,
  • Gang WANG , 2 ,
  • Shaopeng WEI 2 ,
  • Changhong LI 3 ,
  • Yiming RONG 4
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  • 1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; Beijing Key Laboratory of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China
  • 2. Beijing Key Laboratory of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China
  • 3. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
  • 4. Beijing Key Laboratory of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China; Mechanical and Energy Engineering Department, South University of Science and Technology of China, Shenzhen 518055, China

Received date: 08 Apr 2016

Accepted date: 27 May 2016

Published date: 31 Aug 2016

Copyright

2016 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

Laser hot wire cladding, with the prominent features of low heat input, high energy efficiency, and high precision, is widely used for remanufacturing metal parts. The cladding process, however, needs to be improved by using a quantitative method. In this work, volumetric defect ratio was proposed as the criterion to describe the integrity of forming quality for cladding layers. Laser deposition experiments with FV520B, one of martensitic stainless steels, were designed by using the Taguchi method. Four process variables, namely, laser power (P), scanning speed (Vs), wire feed rate (Vf), and wire current (I), were optimized based on the analysis of signal-to-noise (S/N) ratio. Metallurgic observation of cladding layer was conducted to compare the forming quality and to validate the analysis method. A stable and continuous process with the optimum parameter combination produced uniform microstructure with minimal defects and cracks, which resulted in a good metallurgical bonding interface.

Key words： process optimization; Taguchi method; signal-to-noise (S/N) ratio; volumetric defect ratio; laser hot wire cladding

Cite this article

Zilin HUANG , Gang WANG , Shaopeng WEI , Changhong LI , Yiming RONG . Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method[J]. Frontiers of Mechanical Engineering, 2016 , 11(3) : 242 -249 . DOI: 10.1007/s11465-016-0397-7

Acknowledgments

This work was financially supported by the National Basic Research Program of China (973 Program) (Grant No. 2011CB013404). The authors are grateful to the State Key Laboratory of Tribology and Dr. Peng Wen for facility support.

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