Effect of metal inert gas welding parameters on the hardness and bending strength of carbon steel plates

This paper reports on process parameter selection for optimizing the weld pool geometry in the metal inert gas welding of High strength low alloy (HSLA) steel. The experimental studies were conducted under varying Voltage, flow rate, stick out and wire feed speed. The settings of welding parameters were determined by using the Taguchi experimental design method. The level of importance of the welding parameters on the weld pool geometry is determined by using analysis of variance (ANOVA). The optimum welding parameter combination was obtained by using the analysis of signal-to-noise (S/N) ratio. The confirmation tests indicated that it is possible to optimize the weld pool geometry significantly by using the Taguchi method. The experimental results confirmed the validity of the used Taguchi method for enhancing the welding performance and optimizing the welding parameters in the metal inert gas welding process.

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Development of adaptive control system for alternating current pulsed metal inert gas welding parameters

Science and Technology of Welding & Joining ◽

10.1179/136217102225006868 ◽

2002 ◽

Vol 7 (6) ◽

pp. 408-412 ◽

Cited By ~ 3

Author(s):

H. Tong ◽

T. Era ◽

T. Ueyama

Keyword(s):

Adaptive Control ◽

Control System ◽

Alternating Current ◽

Inert Gas ◽

Welding Parameters ◽

Adaptive Control System ◽

Metal Inert Gas Welding

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Effects of Welding Parameters on Microstructure and Mechanical Properties of the Joint of the Magnesium Alloy AZ31B

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.480-481.53 ◽

2011 ◽

Vol 480-481 ◽

pp. 53-58

Author(s):

De Xin Sun ◽

Shi Jun Luo ◽

Hong Zhuang Zhang ◽

Da Qian Sun

Keyword(s):

Mechanical Properties ◽

Heat Affected Zone ◽

Welding Current ◽

Inert Gas ◽

Welding Parameters ◽

Grain Coarsening ◽

Microstructure Change ◽

Magnesium Alloy Az31b ◽

Metal Inert Gas Welding ◽

Equiaxed Grains

Through the metal inert gas welding (MIG) experiment, the effects of the different welding parameters on the microstructure, the weld configuration and the mechanical properties of the joint of the magnesium (Mg) alloy AZ31B were analyzed. The results indicate that with the increase in the welding current, the microstructure change of the weld is characterized by the grain coarsening, and the microstructure change of the heat affected zone is characterized by the grain coarsening and the broadening of the heat affected zone. An exorbitant welding current is inimical to the weld configuration. With the increase in the welding speed, the welding linear energy decreases, inducing the formation of the finer equiaxed grains in the weld. Moreover, the grains in the heat affected zone are also with the trend of the refinement, and thus the mechanical properties of the joint increase. The optimal welding current and speed in our experiment are 160-170A and 400-450mm/min, respectively.

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Vibration Tests for Determination of Longitudinal Elasticity Modulus and Shear Modulus of some Structures Welded with Tubular Wire

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.430.101 ◽

2013 ◽

Vol 430 ◽

pp. 101-107

Author(s):

Raul Moisa ◽

Tiberiu Medgyesi ◽

Liviu Bereteu ◽

Gheorghe Drăgănescu ◽

Dorin Simoiu ◽

...

Keyword(s):

Carbon Steel ◽

Shear Modulus ◽

Elasticity Modulus ◽

Welding Process ◽

Flexural Vibration ◽

Steel Plates ◽

Welding Parameters ◽

Advantages And Disadvantages ◽

Vibration Tests

The purpose of this paper is to determine Young's modulus and the shear modulus of some welded joints made with usual tubular steel by flexural vibration tests. This is the case of the type carbon steel plates S235 JR according to EN 10025, with a thickness of 3 mm welded with MIG/MAG welding process with R713 tubular wire with a diameter of 1.2 mm, using SelcoNeoMig 3500 equipment. The technological part is detailed: welding parameters used, advantages and disadvantages of tubular wires use, problems regarding ambient protection, punctual applications of welding procedures with tubular wire. Processing the obtained signal based on vibration response the elasticity modulus is determined and its value is then compared with the value of elasticity modulus obtained through tensile stress and also with the value obtained by theoretical way.

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