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Wyświetlanie 1-7 z 7
Tytuł:
The Analysis of Thermomechanical States in Multipass Arc Weld Surfaced Steel Elements
Autorzy:
Winczek, J.
Powiązania:
https://bibliotekanauki.pl/articles/352503.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
temperature field
phase transformation
Gas Metal Arc Weld surfacing
Opis:
The paper presents the analysis of temperature fields, phase transformations, strains and stresses in a cuboidal element made from S235 steel, surfaced with multipass GMA (Gas Metal Arc) method. The temperature field is described assuming a dual-distribution heat source model and summing up the temperature fields induced by the padded weld and by the electric arc. Dependence of stresses on strains is assumed on the basis of tensile curves of particular structures, taking into account the influence of temperature. The calculations were carried out on the example of five welds in the middle of the plate made of S235 steel. The simulation results are illustrated in graphs of thermal cycles, volume shares of structural components and stresses at the selected points of cross-section, and the temperature and strain distributions in the whole cross section.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1615-1628
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of a temporary temperature field during arc weld surfacing of steel elements taking into account heat of the weld
Autorzy:
Winczek, J.
Rygał, G.
Powiązania:
https://bibliotekanauki.pl/articles/122403.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
modeling
arc weld surfacing
temperature field
modelowanie
pole temperatury
Opis:
In this work, a model of a temperature field in a steel element during a singlepass arc weld surfacing is presented. Analytical solution for half-infinite body model is obtained by aggregating temperature increments caused by applying liquid metal and heat radiation of a moving electrode. The assumptions are Gaussian distributed heat sources of applied metal and the weld and of an electric arc heat source. Computations of the temperature field were carried out during arc weld surfacing of cuboidal steel element. The results are presented as temporary and maximum temperature distribution in the element’s crosssection and thermal cycles at selected points. The accuracy of the solution is verified comparing a calculated fusion line to that obtained experimentally.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 1; 111-120
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermomechanical States in Arc Weld Surfaced Steel Elements
Autorzy:
Winczek, J.
Skrzypczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/352289.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
temperature field
phase transformation
Gas Metal Arc Weld surfacing
Opis:
Kinetics of phase transformations during heating is limited by temperature values at the beginning and at the end of austenitic transformation, while the progress of phase transformations during cooling is determined on the basis of TTT-welding diagram and Johnson-Mehl-Avrami and Kolomogorov law for diffusive transformations and Koistinen-Marburger for martensitic transformation. Stress state of a bar subjected to thermo-mechanical loads is described assuming the plane cross section hypothesis and using integral equations of stress equilibrium of a bar as well as simple Hook’s law. Stresses in the elastic-plastic state are determined by iteration using solutions with a variable elastic modulus of elasticity, conditioned by tensile curves. Dependence of stresses on strains is assumed on the basis of tensile curves of particular structures, taking into account the influence of temperature. There were performed calculations of the temperature field, phase transformations, strains and stresses for GMAW surfacing of a cuboid element made of S235 steel. Authors’ programs, made in Borland Delphi, were used for calculations.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1623-1634
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The model of temporary temperature field during multi-pass arc weld surfacing. Pt. 1, Analitycal description
Autorzy:
Winczek, J.
Rygał, G.
Skrzypczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/122866.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
temperature field
Gas Metal Arc Weld surfacing
modelling
pole temperatury
modelowanie
Opis:
This work presents a model of a temperature field in a steel element during multi-pass Gas Metal Arc Weld surfacing taking into account heat of the melted electrode material. An analytical solution for a half-infinite body model is obtained by aggregating temperature increments caused by applying liquid metal and heat radiation of a moving electrode. The assumptions are Gaussian distributed heat sources of applied melted electrode material and of an electric arc.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 2; 123-130
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The model of a temporary temperature field during multi-pass arc weld surfacing. Pt. 2, Example of computations
Autorzy:
Winczek, J.
Rygał, G.
Skrzypczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/122577.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
temperature field
Gas Metal Arc Weld surfacing
modelling
pole temperatury
modelowanie
Opis:
In this work computations of a temperature field are carried out during multipass Gas Metal Arc Weld surfacing of a cuboidal steel element taking into account heat of the melted electrode material. The results are presented in the form of temporary and maximum temperature distribution in the element’s cross-section and thermal cycles at selected points.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 3; 141-148
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Evaluation of the Wear Mechanism of High-Carbon Hardfacing Layers
Autorzy:
Winczek, J.
Gucwa, M.
Mičian, M.
Koňár, R.
Parzych, S.
Powiązania:
https://bibliotekanauki.pl/articles/354160.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hardfacing
self shielded flux cored arc welding
cast iron
erosion
wear
structure
Opis:
Materials based on cast irons are often used for protection against wear. One of the methods of creating protective surface with cast iron structures is hardfacing. The application of hardfacing with self shielded flux cored wire with high carbon content is one of the economical ways often used to protect machinery parts exposed to both abrasion and erosion. The wear resistance of hardfacings depends on their chemical composition, structure obtained after hardfacing, parameters of depositing process andspecific conditions of wear. As the base material in the investigation the steel grade S235JR was used. The wear behavior mechanism of hardfacings made with one type of self shielded flux cored wire and different process parameters were evaluated in thispaper. Structures obtained in deposition process were different in hardness, amount of carbides and resistance to wear with two investigated impingement angles. The erosion tests showed that impingement angle 30° gives lower erosion rate than angle 60°.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 1111-1115
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the heat source model selection on mapping of heat affected zones during surfacing by welding
Autorzy:
Winczek, J.
Powiązania:
https://bibliotekanauki.pl/articles/122299.pdf
Data publikacji:
2016
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
welding heat source
heat-affected zone
submerged arc welding
modelowanie
źródło ciepła spawalnicze
strefa wpływu ciepła
spawanie łukiem krytym
Opis:
The paper compares forms and dimensions of heat affected zones determined on the basis of analytical descriptions of temperature fields caused by different models of heat source. In the first case, a single-distributed volumetric heat source model reflecting only the impact of an electric arc was assumed. In further considerations, bimodal heat source models were applied. The first one consists of a volumetric heat source model of weld reinforcement (of melted electrode material) and a surface model of an electric arc. In the second one a bimodal source is the sum of volumetric heat source models of weld reinforcement and an electric arc. Calculations are based on the example of submerged arc welding of a rectangular S355 steel element. The results of numerical simulations were verified experimentally, confirming the argument that it is necessary to include the bimodal heat source in temperature field modelling, which takes into account the temperature rises caused by the heat of melted electrode material.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2016, 15, 3; 167-178
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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