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    Wyświetlanie 1-8 z 8
    Tytuł:
    The Design of Cast Technological Equipment for Heat Treatment Furnaces
    Autorzy:
    Drotlew, A.
    Piekarski, B.
    Słowik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/383016.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry materials
    innovative foundry technologies
    heat treatment plant
    heat treatment furnaces
    materiały innowacyjne
    innowacyjne technologie odlewnicze
    piec do obróbki cieplnej
    urządzenia do obróbki cieplnej
    Opis:
    Various examples of the design of cast elements of the equipment used in furnaces for the heat treatment of machine parts are given. Shortcomings in their performance are indicated. Reasons for required stability of equipment are briefly discussed. Elements of equipment illustrate the possibilities of using a charge-carrying pallet with dimensions of 900×600×45 mm as a basis for multi-component technological equipment. Introducing additional elements, such as metal baskets, intermediate pallets or crossbars to the main pallet, it becomes possible to create different configurations of this equipment. The technological equipment presented and discussed here is offered to different plants which heat-treat a wide variety of produced parts. It was found that the reliability and durability of new designed equipment can be checked only during practical use. For large plants dealing with the heat treatment of bulk quantities of parts homogeneous or similar in shape is recommended to use the dedicated tooling.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 31-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cast construction elements for heat treatment furnaces
    Autorzy:
    Piekarski, B.
    Drotlew, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382333.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    zakład obróbki cieplnej
    Opis:
    The study presents sketches and photos of the cast creep-resistant components used in various types of heat treatment furnaces. The shape of the elements results from the type of the operation carried out in the furnace, while dimensions are adjusted to the size of the furnace working chamber. The castings are mainly made from the high-alloyed, austenitic chromium-nickel or nickel-chromium steel, selecting the grade in accordance with the furnace operating conditions described by the rated temperature, the type and parameters of the applied operating atmosphere, and the charge weight. Typical examples in this family of construction elements are: crucibles, roller tracks, radiant tubes and guides. The majority of castings are produced in sand moulds.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 3 spec.; 163-170
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Konstrukcja palety podstawowej oprzyrządowania technologicznego do obróbki cieplnej
    Structure of guide grate in heat treatment technological equipment
    Autorzy:
    Drotlew, A.
    Garbiak, M.
    Kubicki, J.
    Piekarski, B.
    Siluk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/391791.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
    Tematy:
    żarowytrzymałe staliwo austenityczne
    odlewy dla zakładów obróbki cieplnej
    palety
    creep resistant austenitic cast steel
    castings for heat treatment plants
    grates
    Opis:
    W pracy przedstawiono sposób postępowania umożliwiający ilościową ocenę porównawczą elastyczności różnych rozwiązań konstrukcyjnych odlewu palety podstawowej. Paleta podstawowa jest głównym elementem wchodzącym w skład konstrukcji wszystkich typów oprzyrządowania technologicznego służącego do ułożenia i transportu wsadu w piecu podczas zabiegów obróbki cieplnej. Jest ażurową i cienkościenną konstrukcją. Określono wartość sił i naprężeń tworzących się w zaproponowanych konstrukcjach palety wskutek ich odkształcenia o zadaną wartość. Na tej podstawie wskazano najkorzystniejsze rozwiązania jej konstrukcji.
    The paper presents a procedure that allows a quantitative comparative assessment of the flexibility of different design solutions of guide grate cast. Guide grate is an essential component part in all types of technological equipment structures used for arranging and transporting charge in furnaces during heat treatment. It is an openwork and thin-walled construction element. Values of forces and stresses created in the proposed guide grates due to deformation are specified. On this basis, the most advantageous structure solutions are indicated.
    Źródło:
    Prace Instytutu Odlewnictwa; 2013, 53, 3; 59-71
    1899-2439
    Pojawia się w:
    Prace Instytutu Odlewnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Flexibility of Pusher Furnace Grate
    Autorzy:
    Słowik, J. A.
    Drotlew, A.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/383197.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    pusher furnace
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    obróbka cieplna
    piec przepychowy
    Opis:
    The lifetime of guide grates in pusher furnaces for heat treatment could be increased by raising the flexibility of their structure through, for example, the replacement of straight ribs, parallel to the direction of grate movement, with more flexible segments. The deformability of grates with flexible segments arranged in two orientations, i.e. crosswise (perpendicular to the direction of compression) and lengthwise (parallel to the direction of compression), was examined. The compression process was simulated using SolidWorks Simulation program. Relevant regression equations were also derived describing the dependence of force inducing the grate deformation by 0.25 mm ‒ modulus of grate elasticity ‒ on the number of flexible segments in established orientations. These calculations were made in Statistica and Scilab programs. It has been demonstrated that, with the same number of segments, the crosswise orientation of flexible segments increases the grate structure flexibility in a more efficient way than the lengthwise orientation. It has also been proved that a crucial effect on the grate flexibility has only the quantity and orientation of segments (crosswise / lengthwise), while the exact position of segments changes the grate flexibility by less than 1%.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 137-140
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical Stresses Induced by Compression in Castings of the Load-carrying Grate
    Autorzy:
    Słowik, J.
    Drotlew, A.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380480.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    castings
    innovative foundry technologies
    innovative foundry materials
    heat treatment
    mechanical stresses
    grates
    odlewy
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    obróbka cieplna
    naprężenia mechaniczne
    Opis:
    The main aim of this study was to examine the compression-induced state of stress arising in castings of the guide grates during operation in pusher-type furnaces for heat treatment. The effect of grate compression is caused by its forced movement in the furnace. The introduction of flexible segments to the grate structure changes in a significant way the stress distribution, mainly by decreasing its value, and consequently considerably extends the lifetime of the grates. The stress distribution was examined in the grates with flexible segments arranged crosswise (normal to the direction of the grate compression) and lengthwise (following the direction of force). A regression equation was derived to describe the relationship between the stress level in a row of ribs in the grate and the number of flexible segments of a lengthwise orientation placed in this row. It was found that, regardless of the distribution of the flexible segments in a row, the stress values were similar in all the ribs included in this row, and in a given row of the ribs/flexible segments a similar state of stress prevailed, irrespective of the position of this row in the whole structure of the grate and of the number of the ribs/flexible segments introduced therein. Parts of the grate responsible for the stress transfer were indicated and also parts which play the role of an element bonding the structure.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 51-54
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cast Grates Used in Heat Treatment Furnaces
    Autorzy:
    Piekarski, B.
    Drotlew, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/381751.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technologies
    innovative foundry materials
    castings for heat treatment plants
    crates
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    odlewy dla zakładów obróbki cieplnej
    kraty
    Opis:
    Examples of cast grates whose construction was based on previously used "old" patterns of the technological equipment for heat treatment furnaces (TEq) are presented. Manufacturers of this type of castings have at their disposal numerous earlier designs of the applied TEq. Their adaptation for the needs of a new order, i.e. the creation of a new design or modification of the already existing one, significantly reduces both cost and time of the implementation. It also allows making new grate constructions of various shapes and sizes, reducing in this way the number of patterns stored by the manufacturer of castings. The examples of cast grates shown and discussed in this study document the variety of ways that can be used when making them from the already existing patterns or castings. The presented grates were made using master patterns, entire castings or their fragments, and modular segments.
    Źródło:
    Archives of Foundry Engineering; 2019, 3; 49-54
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Castings in Pit Furnaces for Heat Treatment
    Autorzy:
    Drotlew, A.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380488.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    cast grate
    pit furnace
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    zakład obróbki cieplnej
    paleta odlewnicza
    piec grzewczy
    Opis:
    The article presents examples of typical designs of the cast technological equipment used in pit furnaces for the heat treatment of metals and alloys. The equipment consists of a set of castings connected together in a proper way and used for the formation and transport of charge, which consists of the heat treated parts. Typical equipment has the shape of a cylinder. Usually it comprises a basic pallet (carrier) completed with other elements, i.e. intermediate pallets, rods, spacers, cross-bars and hooks, their number depending on the number and shape of heat-treated products and on production volume. The simplest design solution is to use a cylindrical basket where heat treated products are arranged in a loose configuration. The majority of elements forming the furnace equipment are castings produced in sand molds. Some of them were designed and manufactured in a Foundry of the West Pomeranian University of Technology in Szczecin.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 3 spec.; 11-14
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cast steels for creep-resistant parts used in heat treatment plants
    Autorzy:
    Drotlew, A.
    Garbiak, M.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380318.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    staliwo austenityczne Ni-Cr
    obróbka cieplna
    innovative foundry technologies
    innovative foundry materials
    cast Ni-Cr austenitic steel
    castings for heat treatment plants
    Opis:
    Creep-resistant parts of heat treatment furnaces are in most cases made from high-alloyed chromium-nickel and nickel-chromium iron alloys, both cast and wrought. This paper presents the types of casting alloys used for this particular purpose, since the majority of furnace components are made by the casting process. Standards were cited which give symbols of alloy grades used in technical specifications by the domestic industry. It has been indicated that castings made currently are based on a wider spectrum of the creep-resistant alloy grades than the number of alloys covered by the standards. Alloy grades recommended by the technical literature for individual parts of the furnace equipment were given. The recommendations reflect both the type of the technological process used and the technical tasks performed by individual parts of the furnace equipment. Comments were also made on the role of individual alloying elements in shaping the performance properties of castings.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 4; 31-38
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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