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    Wyświetlanie 1-9 z 9
    Tytuł:
    Defects Appearing in the Surfacing Layers of Abrasion Resistant
    Autorzy:
    Bęczkowski, R.
    Gucwa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381038.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    imperfection
    surfacing
    metallography
    hardfacing
    quality
    wadliwość
    proces napawania
    metalografia
    jakość odlewu
    Opis:
    The surfacing technologies are used for constitution of protection layer against wear and is destined for obtaining coating with high hardness. Among many weldings methods currently used to obtain the hard surface layer one of the most effective way of hardfacing is using flux cored arc welding. This additional material gives more possibilities to make expected hard surface layer. Chemical composition, property and economic factors obtained in flux cored wire are much richer in comparison to these obtained with other additional materials. This is the reason why flux cored wires give possibilities of application this kind of material for improving surface in different sectors of industry. In the present paper the imperfection in the layers was used for hardfacing process in different situations to show the possible application in the surface layer. The work presents studies of imperfection of the welds, contains the picture of microstructures, macrostructures and shows the results of checking by visual and penetrant testing methods.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 23-28
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Cladding Parameters with FCAW on Bead Geometry with Plackett-Burman Experiment Used
    Autorzy:
    Bęczkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/355980.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cladding
    hardface plate
    geometry
    Plackett-Burman design
    FCAW
    Opis:
    The paper analyzes, from the geometrical aspect, the quality of the new flux cored wire intended for cladding process in function of changes in cladding parameters such as welding speed, coefficient of thermal conductivity, power source setting, the length of projecting portion of the electrode. The results of bead geometry analysis allows to illustrate the nature of the impact of the examined input variables on parameters of generated surface. The most important parameters here are the depth of penetration and the height of clad. The experimental data were processed using the Plackett-Burman experiment, which describes the impact of technological parameters on the main parameters used during production of resisting panels. It shows mathematical relations describing correlations between the input parameters and the value of depth of penetration and hight of bead made by Flux Cored Arc Welding (FCAW).
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 2; 681-687
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Repair Welding of the Massive Cast
    Autorzy:
    Bęczkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/381046.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast defect
    rebuilding
    quality
    MAG
    welding
    wady odlewów
    przebudowa
    jakość
    spawanie
    Opis:
    The rebuilding technologies are used to develop surface of ladle. Among many welding methods currently used to obtain surface layer without defects one of the most effective way of rebuilding is using metal arc welding. This additional material gives more possibilities to make expected quality of rebuild surface. Chemical composition, property and economic factors allow to use metal wire. Because of these reasons, solid wire gives opportunity to be wildly used as material to rebuild or repair the surface in different sectors of industry. The paper shows a few ways to rebuild the surface in the massive cast with the use of metal active gas welding for repair. The work presents studies of defect in the massive cast. It contains the pictures of microstructures and defects. The method of removing defects and the results of checking by visual and penetrant testing methods are shown. The papers describes the methodology of repair the ladle with metal active gas welding, preheating process and standards non destructive testing method.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 5-8
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Use of Numerical Modelling to Determine the Conditions of Regeneration of Medium Carbon Steel
    Autorzy:
    Bęczkowski, R.
    Wróbel, J.
    Kulawik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/356535.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    regeneration process
    preheating
    numerical modeling
    mechanical phenomena
    phase transformations
    Opis:
    In the paper, the regeneration process of the material in grade C45 using the MAG welding was analysed. The effect of preheating on the properties of the regenerated layers was determined. Preheating technology was used to facilitate the process of regeneration and minimize the risk of imperfections. The use of numerical methods allows one to observe the direction of changes in the properties, structures and emerging stresses and accompanying strains of the elements depending on the temperature applied for preheating. Modeling of the stress state in the element made of medium carbon steel during the regeneration process was performed on original software based on the finite element method. The implemented numerical model consists of three basic elements – thermal phenomena, mechanical phenomena and phase transformations in the solid state. The performed numerical analysis made determining the optimum heating conditions possible, so that the material in the area of joint didn’t show tendency to create structural notches associated with the stress state.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 4; 2223-2230
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the Content of δ Ferrite in Pulse-Arc Welded Steel 304
    Autorzy:
    Gucwa, M.
    Bęczkowski, R.
    Grzyb, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/380266.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stainless steel
    ferrite
    welding arc
    Schaeffler diagram
    stal nierdzewna
    ferryt
    spawanie
    diagram Schaefflera
    Opis:
    The paper presents the results of research on the effect of the welding arc type on the content of δ ferrite, in the welded joint of 304 grade stainless steel. Based on the commonly used Schaefler diagram, the content of δ ferrite in the welded joint was estimated, and then these results were verified by comparing them with results obtained on specimens welded by different welding arc types, including the pulse arc. The obtained investigation results indicate some discrepancies between calculations made by analytical methods and the fraction of δ ferrite measured on the prepared specimens.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 131-134
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Properties of Coatings Made with Self Shielded Cored Wire
    Autorzy:
    Gucwa, M.
    Winczek, J.
    Bęczkowski, R.
    Dośpiał, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381066.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear resistant alloys
    metallography
    hardfacing
    carbides
    hardness
    cored wire
    stopy odporne na zużycie
    metalografia
    napawanie
    węgliki
    twardość
    drut rdzeniowy
    Opis:
    The welding technologies are widely used for design of protection layer against wear and corrosion. Hardfacing, which is destined for obtaining coatings with high hardness, takes special place in these technologies. One of the most effective way of hardfacing is using self shielded flux cored arc welding (FCAW-S). Chemical composition obtained in flux cored wire is much more rich in comparison to this obtained in solid wire. The filling in flux cored wires can be enriched for example with the mixture of hard particles or phases with specified ratio, which is not possible for solid wires. This is the reason why flux cored wires give various possibilities of application of this kind of filler material for improving surface in mining industry, processing of minerals, energetic etc. In the present paper the high chromium and niobium flux cored wire was used for hardfacing process with similar heat input. The work presents studies of microstructures of obtained coatings and hardness and geometric properties of them. The structural studies were made with using optical microscopy and X- ray diffraction that allowed for identification of carbides and other phases obtained in the structures of deposited materials. Investigated samples exhibit differences in coating structures made with the same heat input 4,08 kJ/mm. There are differences in size, shape and distribution of primary and eutectic carbides in structure. These differences cause significant changes in hardness of investigated coatings.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 39-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Heat Input on the Geometric Properties of Welded Joints
    Autorzy:
    Gucwa, M.
    Bęczkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/380580.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat input
    welded joint
    cored wire
    solid wire
    dopływ ciepła
    złącze spawane
    drut rdzeniowy
    drut lity
    Opis:
    The paper discusses the effect of the heat input in the case of welding with solid and cored wire, respectively to the quality of the obtained joints. Formulas used for this purpose do not allow for the form of the filler, which, in the authors' opinion, has an effect on the basic parameters characterizing the welded joint. The paper presents the results of research on the geometric sizes of a joint made with a similar heat input, but using the filler in the form of, respectively, solid and cored wire. Investigations were carried out on fillet-weld joints that were subjected to macroscopic metallographic examinations. Studies have shown that the heat input given without allowing for the form of the filler does not reflect the changes that occur in the welded joint due to the thermal welding cycle.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 127-130
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Type of Welding Sequence During Hardfacing Chromium Cast Iron for Erosion Resistance
    Autorzy:
    Gucwa, M.
    Bęczkowski, R.
    Winczek, J.
    Wyleciał, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/382472.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear resistant alloys
    hardfacing
    erosion
    welding
    hardness
    stopy odporne na zużycie
    napawanie
    erozja
    spawanie
    twardość
    Opis:
    The paper presents the capabilities of welding techniques to creating properties of wear resistant high chromium cast iron alloy. The use of the right kind of welding sequence allows you to change the structure and properties of the obtained welds. Tests were conducted for one type of additive material in the form of self shielded core wire. In order to determine the effect of the type of welding sequence on the properties of welds performed welding using string bead and weave bead. The resulting weld was tested on hardness and research structure in an optical microscope. In the following studies have been made erosive tests wear of made hardfacing. String beads gave structure rich in carbides and harder about 270 HV of the weld with weave bead. Also, wear resistance was nearly twice as better for welds made with string beads. In the experiment a decisive role in the resistance to wear plays a high hardness of the deposit and the presence of carbides in its structure. Changes in the basic parameters of the deposition process allows for the formation of structure and properties of hardfacing welds in a wide range.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 51-54
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of image data in rapid mapping
    Autorzy:
    Sanecki, J.
    Klewski, A.
    Stępień, G.
    Beczkowski, K.
    Bauer, R.W.
    Powiązania:
    https://bibliotekanauki.pl/articles/359834.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    remote sensing
    rapid mapping
    image map
    unmanned aerial systems (UAS)
    Opis:
    The topic of the publication is the presentation of the method of rapid mapping performation. Rapid mapping are performed in special situations, if a terrain is subjected to significant changes or a quick human reaction is needed. Such performation can be available both in paper and digital versions, published on on-line websites – depending on the needs. For rapid mapping almost every type of image data can be used. In rapid mapping different editorial rules are applicable, it is acceptable to make imaging legible with materials of much less detail. A scale of the design is determined based on the interpretation possibilities, and not on the base of predetermined resolution of the design.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 39 (111); 145-150
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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