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Wyszukujesz frazę "Winczek, M." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    The Properties of High Chromium Hardfacings Made with Using Pulsed Arc
    Autorzy:
    Gucwa, M.
    Winczek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381430.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hardfacing
    heat input
    self-shielded cored wire
    dilution
    napawanie
    dopływ ciepła
    rdzeń
    Opis:
    The paper discusses the possibility of using pulsed arc hardfacing for depositing high chromium and carbon surfaces. In these studies self-shielded cored wire was used as a material for hardfacing. Pulsed arc is used in welding technologies to better control of transport molten metal in the welding arc and heat input. The correct heat input results in limited dilution surfaces that is very important in wear prevention technologies. The paper presents the results of research on the geometric parameters and hardness of deposited surfaces. The investigation was carried out with various welding parameters that were designed in heat source. The survey was conducted on the specimens that were subjected to metallographic examination hardness test.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 1 spec.; 37-40
    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 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:
    Ultrasonic Control of Ductile Cast Iron Castings by Phased Array Technique
    Autorzy:
    Boháčik, M.
    Mičian, M.
    Koňár, R.
    Trško, L.
    Winczek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/380009.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ductile cast iron
    technological casting parameters
    ultrasonic testing
    phased array
    żeliwo sferoidalne
    parametry technologiczne
    badania ultradźwiękowe
    Opis:
    The goal of this article is non-destructive ultrasonic testing of internal castings defects. Our task was to cast several samples with defects like porosity and cavities (where belongs mostly shrinkages) and then pass these samples under ultrasonic testing. The characteristics of ultrasonic control of castings are presented in the theoretical part of this article. Ultrasonic control is a volume non-destructive method that can detect internal defects in controlled materials without damaging the construction. It is one of the most widely used methods of volume non-destructive testing. For experimental control were made several cylindrical samples from ferritic grey and ductile cast iron. Because of the form and dispersion of graphite of grey cast iron it was not possible to make ultrasonic records on this casting with probe we used, so we worked only with ductile cast iron. Ultrasonic records of casting control are shown and described in the experimental part. The evaluation of the measurement results and the reliability of the ultrasonic method in castings control is listed at the end of this article.
    Źródło:
    Archives of Foundry Engineering; 2019, 2; 9-14
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Repair of Foundry Defects in Steel Castings Using Welding Technology
    Autorzy:
    Mičian, M.
    Koňár, R.
    Hlavatý, I.
    Winczek, J.
    Gucwa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380199.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel casting
    repair by welding
    mechanical testing
    approval of welding procedure
    odlew staliwny
    spawanie naprawcze
    badania mechaniczne
    Opis:
    Use of welding technology for the repair of steel castings is particularly common in two areas. These include weld surfacing of protrusions that remained incomplete after casting, or filling the surface defects (cavities). These defects are more common for steel casting than for graphite cast iron, due to the lower fluidity of steel. This article describes a suitable technological process of repairing the defects on the casting using the welding technology. A specimen produced for this purpose was prepared by carving a groove into a cast steel plate 20 GL, which was then filled with a weld metal using MAG (135) technology. The following evaluation of the basic characteristics of the repaired site point to the suitability of the selected technological parameters of the repair procedure. Metallographic evaluation was carried out, further evaluation of mechanical properties by tensile test, bend test and Vickers hardness test. The proposed methodology for the evaluation repair of foundry defects in steel castings also meets the requirements for the approval of welding procedures in accordance with the relevant valid legislation.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 2; 177-180
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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