tig welding optimization
ISSN: 2277-3754
ISO 9001:2008 Certified
International Journal of Engineering and Innovative Technology (IJEIT)
Volume 2, Issue 11, May 2013
Application of Taguchi Methods and ANOVA in
GTAW Process Parameters Optimization for
Aluminium Alloy 7039
Anoop C A, Pawan Kumar
Department of Mechanical Engineering, NIT Calicut (Kerala), India
VRDE, Defence Research and Development Organization, Ahmednagar (MS), India
Vainarman et al. [2] reported that the use of pulsed arc welding in place of conventional GTAW increases the output by 200–400%, reduces consumption of argon by three to ten times, and also reduces the cost of 1 m weld deposition by three to five times. The aim of pulsing is mainly to achieve maximum penetration without excessive heat build-up, by using the high current pulses to penetrate deeply and then allowing the weld pool to dissipate some of the heat during relatively longer arc period at a low current. The increased numbers of variables in the pulsed GTAW process also support the possibility of increased control of the solidification process. Arc pulsation is responsible for the grain refinement, lesser risk of cracking, reduction in width of
HAZ (heat affected zone) and less distortion. A. Kumar et al
[3] developed a method to use Taguchi method to optimize the magnetic arc oscillation welding process parameters of non-heat treatable aluminum alloy 5456 welds for increasing the mechanical properties. P. K. Giridharan [4] et al developed optimization of pulsed GTAW process parameters to obtain optimum bead geometry using the developed models. M. Balasubramanian [5] et al used traditional Hooke and Jeeve’s algorithm for optimizing process parameters to obtain maximum impact toughness properties in the pulsed
GTA welding of titanium alloy. In this paper, AA7039 samples were welded by pulsed GTAW process and testing was carried out on various machines or equipments. The setting of the pulsed GTAW process parameters were
ISO 9001:2008 Certified
International Journal of Engineering and Innovative Technology (IJEIT)
Volume 2, Issue 11, May 2013
Application of Taguchi Methods and ANOVA in
GTAW Process Parameters Optimization for
Aluminium Alloy 7039
Anoop C A, Pawan Kumar
Department of Mechanical Engineering, NIT Calicut (Kerala), India
VRDE, Defence Research and Development Organization, Ahmednagar (MS), India
Vainarman et al. [2] reported that the use of pulsed arc welding in place of conventional GTAW increases the output by 200–400%, reduces consumption of argon by three to ten times, and also reduces the cost of 1 m weld deposition by three to five times. The aim of pulsing is mainly to achieve maximum penetration without excessive heat build-up, by using the high current pulses to penetrate deeply and then allowing the weld pool to dissipate some of the heat during relatively longer arc period at a low current. The increased numbers of variables in the pulsed GTAW process also support the possibility of increased control of the solidification process. Arc pulsation is responsible for the grain refinement, lesser risk of cracking, reduction in width of
HAZ (heat affected zone) and less distortion. A. Kumar et al
[3] developed a method to use Taguchi method to optimize the magnetic arc oscillation welding process parameters of non-heat treatable aluminum alloy 5456 welds for increasing the mechanical properties. P. K. Giridharan [4] et al developed optimization of pulsed GTAW process parameters to obtain optimum bead geometry using the developed models. M. Balasubramanian [5] et al used traditional Hooke and Jeeve’s algorithm for optimizing process parameters to obtain maximum impact toughness properties in the pulsed
GTA welding of titanium alloy. In this paper, AA7039 samples were welded by pulsed GTAW process and testing was carried out on various machines or equipments. The setting of the pulsed GTAW process parameters were
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