Welding is an important manufacturing process that can be automated and optimized. This paper focuses on the development of a robotic arc welding system, wherein a three-degreeof-freedom Selective Compliance Assembly Robot Arm (SCARA) is interfaced to a Gas Metal Arc Welding (GMAW) process. The entire system is composed of a robot linked to a GMAW system. Set points are derived using the desire...

This research aims to investigate the process of gas tungsten arc welding commonly used in submersible pump industry. The weld abandons is a noteworthy concern prompting revamp, greater expenses, and this manner, influencing conveyance plan activity. article succeeds deploying six sigma Define, Measure, Analyze, Improve, Control (DMAIC) structure improve action features assess eradicate differe...

This paper deals with the investigation of the microstructure and hardness of steel samples cladded with satellite 6-WC composites by using gas tungsten arc welding (GTAW) process. For this purpose, steel samples were coated with unreinforced and reinforced stellite (by 20, 30 and 40 wt.% WC). The cladded samples were evaluated by metallographic studies, microhardness measurement and X-ray diff...

This article analyzes the transient complex heat transfer and fluid flow in molten metal and arc plasma during the gas metal arc welding process. The model predicts the formation, growth, detachment, and transfer of droplets from the tip of a continuously fed electrode under the influences of several competing forces including gravity, electromagnetic force, arc pressure, plasma shear stress, a...

Observing the weld pool and measuring its geometrical parameters are key issues for developing the next generation intelligent welding machine and modeling the complex welding process. In the past few years, different techniques have been applied, but the dynamic specular weld pool surface and the strong weld arc complicate these approaches and make observation difficult. To resolve the problem...

Quantification of infrared (IR) radiation is a convenient, noncontact method for making the base metal temperature measurements needed for on-line feedback controls. However, the problem of interference from the arc is a complicating factor in applying IR temperature sensing to welding. The objective of this research is to implement and test a top-face, noncontact temperature measurement system...

Observing the weld pool and measuring its geometrical parameters is a key issue for developing the next generation intelligent welding machine and modeling complex welding process. In the past few years, different techniques have been applied, but the dynamic specular weld pool surface and the strong weld arc complicate these approaches and make the observation difficult. To resolve the problem...

As one of techniques to improve a penetration depth in gas tungsten arc welding, it has been proposed that carbon dioxide is applied as shielding using double torch. Two types gases can flow independently the torch: inner and outer gas. The purpose this study was clarification behavior establish guideline for controlling oxygen contamination which affects toughness welded part formed by welding...

Background: Hazardous chemical agents in the welding operation are a mixture of metal fumes and toxic gases, the inhalation of which causes adverse health effects among welders. The emission of gases in the workplace is a logical cause for concern regarding the potential development of respiratory disease. The aim of the present study was to determine the concentration values of gases discharge...