SAW – Narrow Gap Welding CrMoV Heat-resistant Steels Focusing to the Mechanical Properties Testing

Holub, Lukáš; Dunovský, J; Kovanda, Karel; Kolařík, Ladislav

doi:10.1016/j.proeng.2015.01.538

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…Welding plays a pivotal role in the industrial sector, serving as the backbone of manufacturing, construction, and engineering projects around the globe. It provides a robust method for joining metals and thermoplastics, enabling the creation of complex structures and machinery essential for infrastructure development, transportation networks [ 1 ], and energy production [ 2 ]. The versatility and strength of welding techniques facilitate innovations in design and materials science, driving advancements in aerospace, automotive, and renewable energy industries.…”

Section: Introductionmentioning

confidence: 99%

Virtual Sensor for On-Line Hardness Assessment in TIG Welding of Inconel 600 Alloy Thin Plates

Górka,

Jamrozik,

Wyględacz

et al. 2024

Sensors

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Maintaining high-quality welded connections is crucial in many industries. One of the challenges is assessing the mechanical properties of a joint during its production phase. Currently, in industrial practice, this occurs through NDT (non-destructive testing) conducted after the production process. This article proposes the use of a virtual sensor, which, based on temperature distributions observed on the joint surface during the welding process, allows for the determination of hardness distribution across the cross-section of a joint. Welding trials were conducted with temperature recording, hardness measurements were taken, and then, neural networks with different hyperparameters were tested and evaluated. As a basis for developing a virtual sensor, LSTM networks were utilized, which can be applied to time series prediction, as in the analyzed case of hardness value sequences across the cross-section of a welded joint. Through the analysis of the obtained results, it was determined that the developed virtual sensor can be applied to predict global temperature changes in the weld area, in terms of both its value and geometry changes, with the mean average error being less than 20 HV (mean for model ~35 HV). However, in its current form, predicting local hardness disturbances resulting from process instabilities and defects is not feasible.

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Section: Introductionmentioning

confidence: 99%

Virtual Sensor for On-Line Hardness Assessment in TIG Welding of Inconel 600 Alloy Thin Plates

Górka,

Jamrozik,

Wyględacz

et al. 2024

Sensors

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“…1b). On such high temperatures heat-affected zone microstructure tends to overgrow [6,9], following formation of a quite large grains, which finally has for consequence significant drop in toughness. Here, importance of sufficient toughness become particularly important, because of sufficient resistance to crack initiation and growth [2,6,10] Therefore, even one welding technology (e.g.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Heat-Affected Zone of High-Strength Steel Welds

Hajro¹,

Hodžić²,

Tasic³

2017

DAAAM Proceedings

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Mechanical properties testing of structural steel welds are well known and standardized. Results of those testing are important information regarding evaluation and qualification of welding technologies. However, using only standardized testing it is not possible to evaluate the weakest part of welds; e.g. coarse-grained heat affected zone, where peak temperature over 1300 °C is reached during fusion welding. Such high temperatures have for consequence significant change and drop of some mechanical properties. Thus, it is important to perform some more sophisticated evaluation and prior preparation of test specimens. Actually, such prior preparation include welding thermo-cycle simulation on test specimen ready for standardized testing. The paper present one combination of testing results, both standardised and sophisticated, for the purpose of more detailed review of mechanical properties of high-strength steel welds with nominal yield strength in the range of 690-890 MPa. Detailed distribution across welds is presented including the following generalised mechanical properties: hardness, strength, toughness. Significant drop of some mechanical properties is observed within coarse-grained heat affected zone, which may require particular attention within everyday engineering practice.

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Weld repair of gas turbine disc: optimization of pulsed TIG welding process parameters and microstructural analysis of Cr–Mo-V Steel

Vahdatkhah¹,

Kopaee²,

khah

2022

Int J Adv Manuf Technol

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SAW – Narrow Gap Welding CrMoV Heat-resistant Steels Focusing to the Mechanical Properties Testing

Cited by 4 publications

References 1 publication

Virtual Sensor for On-Line Hardness Assessment in TIG Welding of Inconel 600 Alloy Thin Plates

Virtual Sensor for On-Line Hardness Assessment in TIG Welding of Inconel 600 Alloy Thin Plates

Mechanical Properties of Heat-Affected Zone of High-Strength Steel Welds

Weld repair of gas turbine disc: optimization of pulsed TIG welding process parameters and microstructural analysis of Cr–Mo-V Steel

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