The effect of the number of welding passes in the distortion of 304L steel plates

Silva, Maurício de Oliveira; Araújo, Douglas Bezerra de; Souza, Daniel; Teixeira, Paulo Roberto

doi:10.20906/cps/cob-2015-1123

Cited by 1 publication

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“…This is due to the high temperature of T * 0 . The evolution of the angular distortion value depends on a number of factors such as HI [33]; number of passes [34]; welding sequence and direction [35]; and bead shape [36] among others.…”

Section: Welding Distortion Analysismentioning

confidence: 99%

Experimental analysis of temperature field and distortions in multi-pass welding of stainless cladded steel

Ghorbel

Ktari

Haddar

2021

Int J Adv Manuf Technol

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The stainless clad steel materials (particularly A283-Gr-C hot-rolled to austenitic stainless steel plate SA240 TP 316L) have become widely used in the fabrication of heat exchangers, pressure vessels, and other components owing to their very interesting properties and low production cost. These cladded materials are mostly joined using multi-pass welding techniques. The temperature distribution that supervenes during welding affects the microstructures and the mechanical properties and may generate residual stresses in the heat-affected zone of the welded plates. Since limited experimental data are available in the literature regarding the complex cases of multi-pass welding of cladded steel materials, a thorough experimental study was performed in order to evaluate the temperature distribution on the welded plates. In fact, eight K-type thermocouples were fixed at different distances from the weld centerline in order to record the temperature evolution along longitudinal, transversal, and thickness directions during the welding process. Due to the unavoidable effects of the generated heat fluxes that always follow the welding, several dimensional changes were occurred on the welded plates. In this study, the longitudinal shrinkage and the angular distortion generated during the welding process by the effect of the heat fluxes were investigated. Then, tensile and bending tests were performed in order to check the welded plate reliability. It was found that (i) the welded joint presents a higher mechanical tensile strength than the parent metal and (ii) no separations, fractures, or tearing appear on the weld joint surface after the bending test.

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Section: Welding Distortion Analysismentioning

confidence: 99%