ijesa

International Journal of Engineering Science and Application

2548-1185 2587-2176

Nisantasi University

ANGULAR DISTORTION IN BUTT ARC WELDING

Yükler

Ahmet İrfan

Kurtulmus

Memduh

MARMARA ÜNİVERSİTESİ

12 28 2018

2 4 137 144 12 05 2018 12 28 2018

2016

International Journal of Engineering Science and Application

The importance of fusion weldingtechnology has been widely recognized in the manufacturing process of varioussteel structures such as ships, bridges, construction machines, power plants,and automobiles. However, a significant disadvantage of fusion welding is thatit often generates unacceptable levels of geometric imperfections such asshrinkage and distortion. Angular distortion is a major problem and mostpronounced among different types of distortion in the butt welded plates. Thisangular distortion is mainly caused by the non-uniform extension andcontraction through thickness direction due to the temperature gradient. Theprincipal factors affecting the degree of welding angular distortion are:material properties (the thermal expansion coefficient, the thermalconductivity and the specific heat), weld groove geometry, joint type andwelding procedures (welding current, arc voltage,welding speed, shielding gas chemical composition, gas flow rate, welding gunangle, time gap between successive passes and number of passes). Allthese factors are explained in the paper.The importance of fusion weldingtechnology has been widely recognized in the manufacturing process of varioussteel structures such as ships, bridges, construction machines, power plants,and automobiles. However, a significant disadvantage of fusion welding is thatit often generates unacceptable levels of geometric imperfections such asshrinkage and distortion. Angular distortion is a major problem and mostpronounced among different types of distortion in the butt welded plates. Thisangular distortion is mainly caused by the non-uniform extension andcontraction through thickness direction due to the temperature gradient. Theprincipal factors affecting the degree of welding angular distortion are:material properties (the thermal expansion coefficient, the thermalconductivity and the specific heat), weld groove geometry, joint type andwelding procedures (welding current, arc voltage,welding speed, shielding gas chemical composition, gas flow rate, welding gunangle, time gap between successive passes and number of passes). Allthese factors are explained in the paper.

Welding distortion Angular distortion

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