Metal Inert Gas (MIG) Welding Process Optimization for 6063-T6 Extruded Material Using OTC/Diahen Equipment

A cost model is an important tool for product design and material selection. An efficient and effective cost estimation tool is necessary for early design evaluations. In this paper, a cost estimation model is presented that estimates the production cost for metal inert gas (MIG) welded joints. This model determines the cost incurred in fabricating each joint with a detailed explanation of each cost component / driver. Each cost component has been closely analyzed and the major cost components have been included in the cost model. We used this cost model to predict the cost of the forty two different joints joined using MIG welding technique. The results predicted by the MIG welding cost model have been compared to that quoted by an expert welder. Initial results show that the cost model and the expert cost estimates follow a similar general trend. Further study is needed to refine the MIG cost model.

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CO2 Laser - MIG Hybrid Welding of Titanium Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.1270 ◽

2011 ◽

Vol 264-265 ◽

pp. 1270-1280

Author(s):

Marco Brandizzi ◽

Annunziata Anna Satriano ◽

Luigi Tricarico

Keyword(s):

Titanium Alloy ◽

Cross Section ◽

Working Conditions ◽

Welding Process ◽

Inert Gas ◽

Welding Parameters ◽

Hybrid Welding ◽

Mig Welding ◽

Butt Welding ◽

Gap Bridging

CO2 laser - Metal Inert Gas (MIG) hybrid welding process was investigated in the butt welding of Ti-6Al-4V titanium alloy sheets of 3.0mm in thickness. Using a Design of Experiment (DoE) approach, bead on plate tests were planned with the aim to analyze the effect of laser and laser-MIG welding parameters on the bead shape, hardness profiles in the weld cross section and welding efficiency. Butt welds performed in correspondence of the bead on plate working conditions which assure the complete penetration of the samples, the absence of undercuts and the maximum welding efficiency, confirm the results of the bead on plate tests and highlights the gap bridging ability of the hybrid welding process.

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Fuzzy Logic-Based Techniques for Modeling the Correlation between the Weld Bead Dimension and the Process Parameters in MIG Welding

International Journal of Manufacturing Engineering ◽

10.1155/2013/230463 ◽

2013 ◽

Vol 2013 ◽

pp. 1-17 ◽

Cited By ~ 1

Author(s):

Y. Surender ◽

Dilip Kumar Pratihar

Keyword(s):

Fuzzy Logic ◽

Knowledge Base ◽

Fuzzy System ◽

Welding Process ◽

Simultaneous Optimization ◽

Inert Gas ◽

Mig Welding ◽

Fuzzy Logic Controllers ◽

Hierarchical Fuzzy System ◽

The Cost

Fuzzy logic-based techniques have been developed to model input-output relationships of metal inert gas (MIG) welding process. Both conventional and hierarchical fuzzy logic controllers (FLCs) of Mamdani type have been developed, and their performances are compared. The conventional FLC suffers from the curse of dimensionality for handling a large number of variables, and a hierarchical FLC was proposed earlier to tackle this problem. However, in that study, both the structure and knowledge base of the FLC were not optimized simultaneously, which has been attempted here. Simultaneous optimization of the structure and knowledge base is a difficult task, and to solve it, a genetic algorithm (GA) will have to deal with the strings having varied lengths. A new scheme has been proposed here to tackle the problem related to crossover of two parents with unequal lengths. It is interesting to observe that the conventional FLC yields the best accuracy in predictions, whereas the hierarchical FLC can be computationally faster than others but at the cost of accuracy. Moreover, there is no improvement of interpretability by introducing a hierarchical fuzzy system. Thus, there exists a trade-off between the accuracy obtained in predictions and computational complexity of various FLCs.

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