Predicting the influence of groove angle on heat transfer and fluid flow for new gas metal arc welding processes

Chen, J.; Schwenk, Christopher; Wu, Chuansong; Rethmeier, Michael

doi:10.1016/j.ijheatmasstransfer.2011.08.046

Cited by 46 publications

(26 citation statements)

References 16 publications

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“…During the last decade, significant progress has been made in the field of modeling of the heat and mass transfer during GMAW. Models including the computation of current density, temperature, and momentum transfer, including the transfer of individual droplets, have been presented [94][95][96][97][98][99][100][101][102][103][104][105].…”

Section: Potential Application Of Hyperbaric Weld Repairmentioning

confidence: 99%

Metallurgical Aspects in the Welding of Clad Pipelines—A Global Outlook

2019

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In the present work, the metallurgical changes in the welding of clad pipelines are studied. Clad pipes consist of a complex multi-material system, with (i) the clad being stainless steel or a nickel-based superalloy, (ii) the pipe being API X60 or X65 high-strength carbon steel, and (iii) the welding wire being a nickel-based superalloy or stainless steel in the root and hot pass, with a nickel or iron buffer layer, followed by filling with carbon steel wire. Alternatively, the corrosion resistant alloy may be used only. During production of the clad pipe, at the diffusion bonding temperature, substantial material changes may occur. These are carbon diffusion from the carbon steel to the clad, followed by the formation of hard martensite at the interface on cooling. The solidification behavior and microstructure evolution in the weld metal and in the heat-affected zone are further discussed for the different material combinations. Solidification behavior was also numerically estimated to show solidification parameters and resulting solidification modes.

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Section: Potential Application Of Hyperbaric Weld Repairmentioning

confidence: 99%

Metallurgical Aspects in the Welding of Clad Pipelines—A Global Outlook

2019

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“…In most analytical and numerical solutions of the differential heat conduction equation, the single-distributed heat source model is adopted [1][2][3][4][5][6][7][8][9][10][11][12]. The use of such a heat source model does not allow one to get the irregular shape of the fusion line.…”

Section: Introductionmentioning

confidence: 99%

Analysis of thermal cycles and phase transformations during multi-pass arc weld surfacing of steel casts taking into account heat of the weld

Winczek¹,

Gucwa²,

Makles³

2018

J. Appl. Math. Comput. Mech.

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In this work, a model of phase transformations during multipass weld surfaced steel casts is presented. In the temperature field calculation algorithm, the influence of the heat of overlaying beads and a self-cooling of previously overlayed beads have been taken into account. The fusion area, full and part transformation zones, by solidus, A 1 and A 3 and A 1 temperatures has been determined, respectively. The temperatures of the beginning and the end of the phase changes during cooling were determined on the basis of the timetemperature-transformation welding diagram. In the phase change kinetic description, the JMAK law and KM formula were used. Theoretical considerations are illustrated by example of volume share calculations of particular structural components during the weld surfaced 230-450 W steel cast. The results of computation in the graphical forms are presented: welding thermal cycle diagrams and structural share change histories at selected points, as well as temperature and the phase share distributions in cross section.MSC 2010: 74F05, 74A50, 80A20

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“…There are two ways of modelling the temperature field during welding: analytical [5][6][7][8][9][10][11][12][13][14] and numerical (the finite difference methods, infinitesimal heat balances and finite element method) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. The welding methods and types of joints can be studied through these approaches [6,20,21,[31][32][33]. The construction of numerical models with heightening complexity allows more essential factors for the exact description of the structural changes in the welded steel.…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Temporary Temperature Field and Phase Transformations in One-Side Butt-Welded Steel Flats

Winczek¹

2016

Joining Technologies

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In this chapter, the welding method applied for modelling the temperature field and phase transformations is presented. Three-dimensional and temporary temperature field for butt welding with thorough penetration was determined on the basis of analytical methods of an integral transformation and Green's function. Structural changes of heating and cooling, proceeding in a weld in the heat-affected zone , were described using the existing formulations of phase transformations. Considerations were illustrated by an example, for which analysis of temperature fields, developed by a moving heat source, and calculations of the distribution of particular phases structures were carried out. Metallographic studies of the butt joints, which were arc welded under a flux, were carried out in the empirical part of this work. Their results enabled the verification of the numerical simulation results of the phase transformations.Keywords: butt-welded joint, temperature field, H"Z, phase transformations, numerical modelling, metallographic examination . IntroductionWelding is characterised by many specific features associated with variable temperatures and variable physical and mechanical properties of the welding material. The moving heat source, characteristic of welding, partial melts the joint surface and fuses an electrode. The electrode fills a joint space with liquid metal. Hence, welding elements are subjected to varying temperature ranges, that is, from ambient to that of a liquid metal. ]. The welding methods and types of joints can be studied through these approaches [ , , , ]. The construction of numerical models with heightening complexity allows more essential factors for the exact description of the structural changes in the welded steel.

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Predicting the influence of groove angle on heat transfer and fluid flow for new gas metal arc welding processes

Cited by 46 publications

References 16 publications

Metallurgical Aspects in the Welding of Clad Pipelines—A Global Outlook

Metallurgical Aspects in the Welding of Clad Pipelines—A Global Outlook

Analysis of thermal cycles and phase transformations during multi-pass arc weld surfacing of steel casts taking into account heat of the weld

The Analysis of Temporary Temperature Field and Phase Transformations in One-Side Butt-Welded Steel Flats

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