EFFECT OF GMAW TWIN WIRE TANDEM PARAMETERS ON MECHANICAL PROPERTIES OF WELDED JOINTS

Authors

  • Kumar Sawrav Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
  • Partha Pratim Bandyopadhyay Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India

DOI:

https://doi.org/10.23055/ijietap.2022.29.6.8487

Keywords:

Tandem, Ultrasonic NDT, SN curve, fatigue, microhardness, Robotic, welding

Abstract

Tandem welding has the advantage of higher productivity over a limitation considering narrow groove joints. Tandem has higher deposition and heat input. To study the effect of variation in robotic tandem parameters on fatigue properties of welded joints, the following parameters were investigated, viz. first case root & the second pass using a single wire, subsequent run tandem twin and second case using root pass using a single wire, subsequent run using tandem twin wire welding. Butt joint samples were subjected to ultrasonic testing, mechanical & metallurgical testing, and fatigue testing. Found Group 1 tensile strength, yield strength, % elongation & impact value to be 12 %, 9 %, 23 % & 14 %, respectively, higher than Group 2. Explained variations in microhardness & better fatigue life were observed for Group 1. This investigation will help manufacturers in decision-making while selecting tandem parameters considering productivity or reliability.

Published

2022-12-13

How to Cite

Sawrav, K., & Bandyopadhyay, P. P. (2022). EFFECT OF GMAW TWIN WIRE TANDEM PARAMETERS ON MECHANICAL PROPERTIES OF WELDED JOINTS. International Journal of Industrial Engineering: Theory, Applications and Practice, 29(6). https://doi.org/10.23055/ijietap.2022.29.6.8487

Issue

Section

Quality, Reliability, Maintenance Engineering