Advantages of the Application of the Temper Bead Welding Technique During Wet Welding

Tomków, Jacek; Rogalski, Grzegorz; Łabanowski, Jerzy

doi:10.3390/ma12060915

Cited by 40 publications

(33 citation statements)

References 31 publications

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“…Water as a welding environment increases the susceptibility of steel to cold cracking [30,31]. Cold cracks can occur in the welds and in the heat-affected zone (HAZ) of the welded joints even 48 h after welding [32,33].…”

Section: Introductionmentioning

confidence: 99%

Dissimilar underwater wet welding of HSLA steels

Tomków

Fydrych

2020

Int J Adv Manuf Technol

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The high-strength low-alloy S460ML and S460N steels were chosen for underwater wet welding of dissimilar T-joints using covered electrodes. For improving the quality of joints, the temper bead welding (TBW) method was used. The application of TBW in pad welding conditions has been investigated earlier but the possibility of usage of this technique in welded joints was not analyzed. The main aim of the study was to check the influence of TBW on the hardness and structures of the heat-affected zone (HAZ) of dissimilar T-joints made in the underwater conditions. The experiments conducted showed that the technique used can reduce the susceptibility to cold cracking by decreasing the hardness in HAZ, which is a result of changes in its structure. The TBW technique reduced the hardness in the HAZ of the S460N steel by 40-50 HV10 and in S460ML by 80-100 HV10. It was also found that the changes in S460ML and S460N were much different, and therefore, the investigated technique can provide better results in the steel characterized by lower carbon equivalent Ce IIW .

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Section: Introductionmentioning

confidence: 99%

Dissimilar underwater wet welding of HSLA steels

Tomków

Fydrych

2020

Int J Adv Manuf Technol

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“…This is because the laser beam offers many advantages, the most important of which are high flexibility, high power densities, localized or selective heating, high processing speed, and low heat input [9][10][11][12][13][14][15]. One of the areas of laser beam application that is currently being widely developed is shaping the properties of surface layers and manufacturing of coatings for enhanced wear characteristics (e.g., corrosion, tribological, abrasive, thermal, and mechanical fatigue or impact load) [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Laser Deposition of Fe-Based Metallic Powder under Cryogenic Conditions

Lisiecki

Ślizak²

2020

Metals

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The purpose of this study was to demonstrate the novel technique of laser deposition of Fe-based powder under cryogenic conditions provided by a liquid nitrogen bath. Comparative clad layers were produced by conventional laser cladding at free cooling conditions in ambient air and by the developed process combining laser cladding and laser gas nitriding (hybrid) under cryogenic conditions. The influence of process parameters and cooling conditions on the geometry, microstructure, and hardness profiles of the clad layers was determined. The optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive spectrometer (EDS), and XRD test methods were used to determine the microstructure and phase composition. The results indicate that the proposed technique of forced cooling the substrate in a nitrogen bath during the laser deposition of Fe-based powder is advantageous because it provides favorable geometry of the clad, low dilution, a narrow heat-affected zone, a high hardness and uniform profile on the cross-sections, homogeneity, and refinement of the microstructure. The influence of the forced cooling on microstructure refinement was quantitatively determined by measuring the secondary dendrite arm spacing (SDAS). Additionally, highly dispersed nanometric-sized (200–360 nm) precipitations of complex carbides were identified in interdendritic regions.

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“…Visual tests were carried out 72 hours after the end of the welding process so as to ensure adequate time for the appearance of potential cold cracks, since both tested steels are characterized by high susceptibility to cold cracking [23,24].…”

Section: Visual Testingmentioning

confidence: 99%

The influence of welding heat input on the quality and properties of high strength low-alloy dissimilar steel butt joints

Tomków

Haras

2020

Weld. Tech. Rev.

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The paper presents the results of non-destructive and destructive tests od dissimilar high-strength low-alloy S460ML and S460N butt joints. These steels are characterized by similar mechanical properties, but their carbon equivalent CeIIW is much different. The joints were made using different values of heat input for each welding bead. They were tested by non-destructive methods: visual, penetrant, radiographic and ultrasonic tests. Then, the destructive tests were made: static tensile test, bending test, impact test and Vickers HV10 hardness measurements. The results of prepared examinations showed, that welding with higher heat input has significant impact on the mechanical properties of the dissimilar steel joints – the joint welded with bigger heat input was characterized by better mechanical properties.

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Advantages of the Application of the Temper Bead Welding Technique During Wet Welding

Cited by 40 publications

References 31 publications

Dissimilar underwater wet welding of HSLA steels

Dissimilar underwater wet welding of HSLA steels

Hybrid Laser Deposition of Fe-Based Metallic Powder under Cryogenic Conditions

The influence of welding heat input on the quality and properties of high strength low-alloy dissimilar steel butt joints

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