Sensing and Control of Double-Sided Arc Welding Process

2002 ◽  
Vol 124 (3) ◽  
pp. 695-701 ◽  
Author(s):  
Y. M. Zhang ◽  
S. B. Zhang ◽  
M. Jiang
Keyword(s):  
Arc Welding ◽  
Current Practice ◽  
Welding Process ◽  
Butt Joint ◽  
Large Structures ◽  
Arc Welding Process ◽  
And Control ◽  
Number Of Passes ◽  
Welding Productivity ◽  
Thick Material

The welding industry is driven to improve productivity without sacrificing quality. For thick material welding, the current practice is to use backing or multiple passes. The laser welding process, capable of achieving deep narrow penetration, can significantly improve welding productivity for such applications by reducing the number of passes. However, its competitiveness in comparison with traditional arc welding is weakened by its high cost, strict fit-up requirement, and difficulty in welding large structures. In this work, a different method, referred to as double-sided arc welding (DSAW) is developed to improve the arc concentration for arc welding. A sensing and control system is developed to achieve deep narrow penetration under variations in welding conditions. Experiments verified that the pulsed keyhole DSAW system developed is capable of achieving deep narrow penetration on a 1/2 inch thick square butt joint in a single pass.

Microstructure and mechanical properties of ADC12/6063-T6 aluminum alloy butt joint achieved by metal inert gas groove welding

2018 ◽  
Vol 233 (10) ◽  
pp. 2120-2124
Author(s):  
Ye Wang ◽  
Mi Zhao ◽  
Hongyu Xu ◽  
Maoliang Hu ◽  
Zesheng Ji
Keyword(s):  
Mechanical Properties ◽  
Arc Welding ◽  
Welding Process ◽  
Weld Interface ◽  
Butt Joint ◽  
Inert Gas ◽  
Butt Joints ◽  
Arc Welding Process ◽  
The Impact ◽  
Silicon Particles

Metal inert gas arc welding process was implemented to join 6063T6 wrought alloy and ADC12 die-casting alloy using ER4047 filler metal. The microstructure of the weld seam and weld interface was investigated. The bonding strength of the butt joints was tested by Charpy U-notch impact test and tensile test. The results showed that a sound welding butt joint with finely silicon particles and excellent mechanical properties was formed, and the size of the silicon particles was nearly 2 μm. Compared with 6063T6 wrought alloy, the impact absorbing energies and the tensile strengths of the butt joint were higher and reached 1.173 kJ/cm2 and 205 MPa, respectively, and the fractures of all tensile specimens occur at the 6063T6 aluminum.

Studies on Temperature Variation and Angular Distortion in Submerged Arc Welded Butt Joint

2013 ◽  
Vol 699 ◽  
pp. 656-661 ◽  
Author(s):  
Arora Hitesh ◽  
Prince Pal Singh ◽  
Ajay Hooda
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Welding Current ◽  
Source Model ◽  
Butt Joint ◽  
Fusion Welding ◽  
Angular Distortion ◽  
Transient Temperature ◽  
Large Structures ◽  
Submerged Arc

Large structures are usually made by joining different elements. Fusion welding is one of the most fundamental technique, which is used to make large metallic joints. During fusion welding a large amount of heat is generated which melts the joint surroundings and a joint is created after solidification. Joint configuration is mostly affected by the material parameters and process type. In this paper, a thermo-mechanical simulation of fusion welding of submerged arc welding is performed using ANSYS. A moving heat source model based on Double-Ellipsoidal heat flux distribution is modelled. The transient temperature distributions and temperature variations of the welded plates are calculated during welding process. Effect of welding speed, welding current on temperature profile and angular distortion of plates is further investigated.

MODELING AND CONTROL OF KEYHOLE ARC WELDING PROCESS

2002 ◽  
Vol 35 (1) ◽  
pp. 151-156
Author(s):  
Y.M. Zhang ◽  
Y.C. Liu
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Modeling And Control ◽  
Arc Welding Process ◽  
And Control
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