scholarly journals Methodology for the Study of Residual Temperature Stresses in the Butt Contour of a Welded Joint Made of Carbon and High-Alloy Structural Steels during Multi-Pass Welding

2022 ◽  
Author(s):  
L. Mironova
Keyword(s):  
Welded Joint ◽  
Structural Steels ◽  
Reference Points ◽  
High Alloy ◽  
Temperature Stresses ◽  
Welding Technology ◽  
Temperature Problem ◽  
Residual Temperature ◽  
Energy Theory ◽  
Shell Plate

Abstract. The method of investigation of residual temperature stresses in the butt contour of the welded joint "shell – plate" made of carbon and high-alloy structural steels during multi-pass welding is described. The temperature problem was solved on the basis of the obtained experimental data of temperature measurement at the reference points of the structure during the application of the rollers. A solution is proposed that takes into account several stages, each of which corresponds to a specific intermediate temperature field due to the peculiarities of welding technology. The evaluation of residual stresses was carried out on the basis of the energy theory of plasticity, taking into account the dependences of the yield strength and elastic modulus of welded metals on temperature.

scholarly journals Experimental Study of the Distribution of Temperature Fields in the Butt Contour of a Welded Joint Made of Carbon and High-Alloy Structural Steels

2021 ◽  
Vol 346 ◽  
pp. 01012
Author(s):  
Lubov Mironova ◽  
Ruclan Nigay ◽  
Evgenij Nigay
Keyword(s):  
Analytical Method ◽  
Arc Welding ◽  
Welded Joint ◽  
Structural Steels ◽  
Reference Points ◽  
Temperature Fields ◽  
High Alloy ◽  
Temperature Stresses ◽  
Thin Walled Tube ◽  
Electric Arc Welding

A graphic-analytical method for determining temperature fields in the butt contour of a welded joint of a thin-walled tube with a base is presented. The method is based on the experimental data of temperature measurement at the reference points of the structure. The features of the elements of the welded joint made of carbon and high-alloy structural steels and the modes of electric arc welding were taken into account. A graphic-analytical method for determining temperature fields is proposed, which, on the basis of the theory of welding strains and stresses, makes it possible to determine temperature stresses and strains, both in the elements of the joint and in the contour of the weld.

Experimental and Computational Method for Determining Temperature Stresses in the Welding of Structures Made of Carbon and High-Alloy Structural Steels

2021 ◽  
Vol 1037 ◽  
pp. 343-348
Author(s):  
Lubov Mironova ◽  
Ruslan Nigay ◽  
Evgeny Nigay
Keyword(s):  
Experimental Data ◽  
Welded Joint ◽  
Spline Approximation ◽  
Numerical Differentiation ◽  
Structural Steels ◽  
Reference Points ◽  
Computational Method ◽  
Temperature Fields ◽  
High Alloy ◽  
Temperature Stresses

A method for determining temperature stresses in a welded joint of a thin-walled pipe with a base is described. The method is based on experimental data of temperature measurement at reference points of the structure. The features of the elements of the welded joint made of carbon and high-alloy structural steels and the modes of electric arc welding were taken into account. The efficiency of using spline approximation of experimental data to obtain analytical dependences of the distribution of temperature fields and stresses, as well as to obtain a solution of the heat equation by numerical differentiation and integration for this case, is shown. Formulas for calculating temperature stresses for the case of an asymmetric temperature distribution in a cylinder under the action of a moving high-intensity heat source are obtained.

Study of Isothermal Pneumatic Forming of High-Strength Materials Subject to Energy Theory of Short-Term Creep and Damage

2017 ◽  
Vol 746 ◽  
pp. 36-47
Author(s):  
Sergey Nikolaevich Larin ◽  
Valeriy Ivanovich Platonov ◽  
Evgeniya Vitalievna Leonova
Keyword(s):  
Titanium Alloys ◽  
Rectangular Cross Section ◽  
Evaluation Process ◽  
High Strength ◽  
Reference Points ◽  
Pressure Diffusion ◽  
Hull Structure ◽  
Energy Theory ◽  
Term Creep ◽  
Short Term Creep

Stringer radiator panels made of aluminum and titanium alloys used in the hull structure of the aircraft, which is necessary to maintain the required temperatures. section of the channel profile has a predetermined geometry - a circular or rectangular cross-section of the channel, and the channel itself can be unilateral or bilateral. The technological process of production of radiator panels is to carry out one process machining position, consisting of a series of operations performed by the gas pressure diffusion bonding two sheets and hot-forming gas channels supplied between the sheets. We consider forming a shell of material, following the energy theory of creep and defectiveness. The expressions for the evaluation process and force parameters of damage, in particular - the destruction. The effect sizes of workpiece thickness in the dome, the relative magnitudes of changes in the geometric parameters and the magnitude of damage accumulated from the time of deformation under different laws for the loading of aluminum and titanium alloys. Comparison of theoretical and experimental data on the relative thickness of the dome blanks and reference points, as well as the relative height of the workpiece indicates satisfactory their agreement.

scholarly journals Flash Welding of Microcomposite Wires for Pulsed Power Applications

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1053
Author(s):  
Nikolaj Višniakov ◽  
Jelena Škamat ◽  
Olegas Černašėjus ◽  
Artūras Kilikevičius
Keyword(s):  
Welded Joint ◽  
Butt Joint ◽  
Pulsed Power ◽  
Magnetic Systems ◽  
Butt Welding ◽  
Welding Technology ◽  
Welding Defects ◽  
Welding Joints ◽  
Strength And Plasticity ◽  
Flash Welding

This paper presents the experimental results of Cu-Nb wire joining upon applying flash welding technology. The present research is aimed at investigating the structure, electrical and mechanical properties of butt welding joints of Cu-Nb conductors, usable for coils of pulsed magnetic systems. The butt joint structure was found to be free of welding defects. The structure of the butt welded joint provides an insignificant increase in electrical resistance and sufficient ultimate strength and plasticity of the joint. The tensile strength of the welded sample reaches 630 MPa.

scholarly journals Influence of welding method on microstructural creation of welded joints  

2011 ◽  
Vol 57 (Special Issue) ◽  
pp. S50-S56 ◽  
Author(s):  
P. Čičo ◽  
D. Kalincová ◽  
M. Kotus
Keyword(s):  
Welded Joints ◽  
Arc Welding ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Structural Phase ◽  
Welding Parameters ◽  
Welding Method ◽  
Welding Technology ◽  
Metal Arc Welding

This paper is focused on the analysis of the welding technology influence on the microstructure production and quality of the welded joint. Steel of class STN 41 1375 was selected for the experiment, the samples were welded by arc welding including two methods: a manual one by coated electrode and gas metal arc welding method. Macro and microstructural analyses of the experimental welded joints confirmed that the welding parameters affected the welded joint structure in terms of the grain size and character of the structural phase.

Welding Technology Research for the Train Bogie

2013 ◽  
Vol 423-426 ◽  
pp. 784-787
Author(s):  
Gang Wang ◽  
Zhi Gang Chen
Keyword(s):  
High Resistance ◽  
Weld Joint ◽  
Welded Joint ◽  
Welding Process ◽  
Technology Research ◽  
Process Scheme ◽  
High Quality ◽  
Process Testing ◽  
Welding Technology ◽  
High Fatigue

Train bogie weld joint requirements with well toughness, high fatigue resistance and high resistance to overload. This article analied the weldability of SMA490BW steel, Combining with the characteristics of train bogie structure, a welding process scheme which had been used in practical productionwas worked out . Process testing and assessment results showed the process can obtain high quality welded joint.

The Influence of the Deposit Parameters on the Medium Chemical Composition of the Welded Joint

2017 ◽  
Vol 68 (10) ◽  
pp. 2261-2264
Author(s):  
Dumitru Titi Cicic ◽  
Corneliu Rontescu ◽  
Ana Maria Bogatu ◽  
Catalin Gheorghe Amza ◽  
Oana Roxana Chivu
Keyword(s):  
Chemical Composition ◽  
Chemical Industry ◽  
Welded Joint ◽  
Base Material ◽  
Working Environment ◽  
Geometrical Configuration ◽  
Optimal Parameters ◽  
Combined Process ◽  
Welding Technology ◽  
Material Mixing

Recipient type products from energetic and chemical industry undergo a wide combined process of corrosion and ware, due to working environment. In order to put this products back in use, in a shorter period of time, welding reconditioning procedures are applied which mainly aim to restore the geometrical configuration but also the characteristics growth. Any welding technology applied, involves melting a filler material but also a part of the base material, mixing them, thereby obtaining the welded joint. The paper present the experimental results obtained in determining the optimal parameters for Metal Active Gas welding deposit that are going to be used for the restoration of some components from energetic and chemical industry and that are highlighting the dependence between the deposit parameters and the chemical composition of the juncture.

Sign in / Sign up

Export Citation Format

Share Document