ANGULAR DISTORTION IN BUTT ARC WELDING

Yıl 2018, Cilt: 2 Sayı: 4, 137 - 144, 28.12.2018

Ahmet İrfan Yükler , Memduh Kurtulmus

Öz

The importance of fusion welding
technology has been widely recognized in the manufacturing process of various
steel structures such as ships, bridges, construction machines, power plants,
and automobiles. However, a significant disadvantage of fusion welding is that
it often generates unacceptable levels of geometric imperfections such as
shrinkage and distortion. Angular distortion is a major problem and most
pronounced among different types of distortion in the butt welded plates. This
angular distortion is mainly caused by the non-uniform extension and
contraction through thickness direction due to the temperature gradient. The
principal factors affecting the degree of welding angular distortion are:
material properties (the thermal expansion coefficient, the thermal
conductivity and the specific heat), weld groove geometry, joint type and
welding procedures (welding current, arc voltage,
welding speed, shielding gas chemical composition, gas flow rate, welding gun
angle, time gap between successive passes and number of passes). All
these factors are explained in the paper.

The importance of fusion welding
technology has been widely recognized in the manufacturing process of various
steel structures such as ships, bridges, construction machines, power plants,
and automobiles. However, a significant disadvantage of fusion welding is that
it often generates unacceptable levels of geometric imperfections such as
shrinkage and distortion. Angular distortion is a major problem and most
pronounced among different types of distortion in the butt welded plates. This
angular distortion is mainly caused by the non-uniform extension and
contraction through thickness direction due to the temperature gradient. The
principal factors affecting the degree of welding angular distortion are:
material properties (the thermal expansion coefficient, the thermal
conductivity and the specific heat), weld groove geometry, joint type and
welding procedures (welding current, arc voltage,
welding speed, shielding gas chemical composition, gas flow rate, welding gun
angle, time gap between successive passes and number of passes). All
these factors are explained in the paper.

Anahtar Kelimeler

Welding, distortion, Angular distortion

Kaynakça

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