Abrasive wear analysis of TIG melted ceramic coating using Taguchi approach
Laser cladding is the most important surface coating technique, widely used due to its capability of producing metal-matrix ceramic composite surfaces with reasonable hardness, corrosion and wear resistances. However, laser surface treatment technique is limited by several factors, such as expensive...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/51664/ http://irep.iium.edu.my/51664/ http://irep.iium.edu.my/51664/1/51664_Abrasive_Wear_Analysis_of_TIG.pdf |
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| Summary: | Laser cladding is the most important surface coating technique, widely used due to its capability of producing metal-matrix ceramic composite surfaces with reasonable hardness, corrosion and wear resistances. However, laser surface treatment technique is limited by several factors, such as expensive manufacturing procedure and precision control of the system. In order to build up a bridge between quality, flexibility and productivity and to obtain the same at a minimized cost, the present study has adopted a novel process of TIG torch for surface modification of steel components. In this study, TiC embedded composite coatings are developed on AISI 4340 steel substrates by simple powder preplacement and TIG torch melting. To study the abrasive wear behaviour of these coatings against alumina ball at 600o C, a design of experiment based on Taguchi’s orthogonal array is used to acquire the wear test data for determining optimal parameters that lead to the minimization of wear rate. In this technique, L16 orthogonal array and signal-to-noise ratio are used to evaluate the influence of TIG melting parameters including current, speed, voltage and shielding gas flow rate on the wear rates of the composite coated surfaces. The results reveal that welding voltage is the most significant control parameter for minimizing wear rate while the current presents the least contribution to the wear rate reduction. |
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