Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 41, Issue 1-2, Pages 24-30Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-008-1451-3
Keywords
PTA hardfacing; Regression analysis; Dilution; Optimization; Genetic algorithm
Funding
- All India Council for Technical Education, New Delhi
- University Grants Commission, New Delhi, India
- Coimbatore Institute of Technology
- V. L. B. Janakiammal College of Engineering and Technology, Coimbatore, India
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Plasma transferred arc hardfacing has attracted increasing attention for its effective protection against corrosion, thermal shock, and abrasion. The quality of hardfaced components depends on the weld bead geometry and dilution, which have to be properly controlled and optimized to ensure better economy and desirable mechanical characteristics of the weld. These objectives can be fulfilled by developing mathematical equations to predict the dimensions of the weld bead. This paper highlights the development of such mathematical equations using multiple regression analysis, correlating various process parameters to weld bead geometry in PTA hardfacing of Colmonoy 5, a nickel-based alloy over stainless steel 316 L plates. The experiments were conducted based on a five factor, five level central composite rotatable design matrix. A genetic algorithm (GA) was developed to optimize the process parameters for achieving the desired bead geometry variables.
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