Abstract
In this study, welding-induced out-of-plane distortion of stainless steel sheets is examined in the case of applying air-atomized mist jet on the rear side of the weld pool. An internally mixed type air atomizing spray nozzle is attached to the welding torch and both are moved at the same speed and direction onto the welding centerline. The test specimens are 2 mm thick grade 304 stainless steel plates. Bead-on-plate welds are made on the plates using a DC Gas tungsten arc welding (GTAW) process. The measured welding distortion and residual stresses are compared with those of a conventional GTAW welding process. The experimental results show that the welds performed with a trailing heat sink using air-atomized mist have almost zero out-of-plane distortion. In addition, a slight welding residual stress reduction is achieved.
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Recommended by Associate Editor Young Whan Park
Sung-Min Joo is currently an Assistant Professor at the Department of Welding & Joining Science Engineering, Chosun University. He received his Ph.D. in Naval Architecture and Ocean Engineering from Chosun University in 2005. His research interests include computational weld mechanics and advanced welding processes.
Se-Min Jeong is currently an Assistant Professor at the Department of Naval Architecture & Ocean Engineering, Chosun University. He received his Ph.D. in Environmental & Ocean Engineering in 2007 from the University of Tokyo. His research interests are focused on computational physics particularly on thermal and fluid systems.
Young-Gon Kim is currently a Principal Researcher in the Department of Green Manufacturing Process Technology Center of KITECH. He received his M.S. and Ph.D. degrees from Osaka University. His research interests include friction stir welding along with fusion welding process for automotive.
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Joo, SM., Kim, YG. & Jeong, SM. Experimental investigation of in-process mitigation of welding distortion for stainless steel plate using air-atomized mist cooling. J Mech Sci Technol 31, 4419–4423 (2017). https://doi.org/10.1007/s12206-017-0842-5
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DOI: https://doi.org/10.1007/s12206-017-0842-5