Groove Design and Its Influence on Strength of SMAW Joint


Authors : Mr Raghu; E. Srinath Reddy; B. Chennakeshavulu; Aman Kumar Singh; G. Abdul Kadir

Volume/Issue : Volume 4 - 2019, Issue 11 - November

Google Scholar : https://goo.gl/DF9R4u

Scribd : https://bit.ly/2Y9pC1g

This study investigates the mechanical properties of the mild steel after performing the welding operation by SMAW process. Three specimen of 45°, 60°,75° groove angle configurations were prepared and welded for this purpose. Various tests like tensile strength test, hardness test, and bending test were performed and the results for the welded joint were noted. The results obtained from the welded zone, HAZ (heat affected zone), and unaffected base metal zone (BM) were compared with each other. The results showed that the tensile strength increases linearly with the increase in groove angle. So the tensile strength for 75° groove angle is more than the other two. But the hardness values of this welded joint were so great than the other two joints. While the 45° groove angle welded joint has the least tensile strength, and also the hardness vales were low. So after checking all the mechanical properties of the three types of welded joints, the joint with groove angle of 60° was confirmed to be the optimum value in the SMAW process and also this angle is suggested to be used in industries.

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