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Investigate welding parameter optimization for weld bead surface quality using MIG technology

Anak John, Gary (2014) Investigate welding parameter optimization for weld bead surface quality using MIG technology. Masters thesis, Universiti Tun Hussein Onn Malaysia.


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Investigation of MIG welding parameter optimization for surface quality is very important to improve the technology of MIG 3D welding application. Weld bead size and shape are one of important considerations for design and manufacturing engineers. These welding parameters affecting the arc and welding bath should be estimated and their changing conditions during process must be known before in order to obtain optimum results, in this case the quality surface of overlap weld beads. The process parameters such as welding voltage, welding travel speed and wire feet rate were studied. The experiments were conducted based on a Three-factor, three-level and L9 using Taguchi method. Taguchi methods applied to improve the quality of welding bead. Carbon steel plate AISI 1015 is used as the work piece material for carrying out the experimentation to optimize the surface quality and hardness value. Taguchi orthogonal array is designed with three levels of welding parameters with the help of software Minitab 16. Nine run experiments of single beads and nine runs for overlap weld beads are performed, surface quality and hardness is calculated using the minitap 16 software. The surface roughness was considered as the quality characteristic with the concept of "the smaller-the-better" and hardness “the larger-the-better. It is also predicted that Taguchi method is a good method for optimization of various input parameters as it reduces the number of experiments.

Item Type: Thesis (Masters)
Subjects: T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking
Depositing User: Normajihan Abd. Rahman
Date Deposited: 04 Sep 2014 00:53
Last Modified: 04 Sep 2014 00:53
URI: http://eprints.uthm.edu.my/id/eprint/5648
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