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Archives of Foundry Engineering
EN The study presented here is related with one of the components of a hybrid decision support system called CAPCAST (Computer Aided Process - CAST), developed under a research project at the Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology. This i[...]
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Archives of Foundry Engineering
EN Ductile iron was quenched using two-variant isothermal transformation. The first treatment variant consisted of one-phase austenitization at a temperature t = 830, 860 or 900 C, cooling down to an isothermal transformation temperature of 300 or 400 C and holding from 8 to 64 minutes. The second trea[...]
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Archiwum Odlewnictwa
2006 R. 6, nr 18/2 111--116
PL Procedura statystyczna posłużyła do oceny wpływu: węgla, krzemu i manganu na granicę plastyczności Rp0,2, wytrzymałość na rozciąganie Rm, twardość H i wydłużenie A5 niestopowego żeliwa ADI. Otrzymane funkcje matematyczne oparto na dużej liczbie wyników badań doświadc[...]
EN Statistical procedure were applied to estimation of the influence of alloying elements: carbon, silicon and manganese on 0.2 % proof strength, tensile strength, hardness and elongation of an ADI. The obtained mathematical functions were based on a large number of the results of empirical investigati[...]
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Archiwum Odlewnictwa
2006 R. 6, nr 18/2 117--122
PL Analizowano wpływ dodatków stopowych na własności mechaniczne żeliwa ADI. Za pomocą funkcji aproksymującej opisano relację pomiędzy pierwiastkami: Cu, Mo i Ni a Rp0,2, Rm, H i A5. Analiza aproksymacji posłużyła do wyznaczenia zależności matematycznych. Do tej analizy[...]
EN Effect of the alloying elements on the mechanical properties in austempered ductile iron was analyzed. Relation among elements Cu, Ni, Mo and the indexs Rp0,2, Rm, hardness and A5 by approximation function was described. Analysis of approximation was used to determin[...]
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Archiwum Odlewnictwa
PL Przedstawiono technologię produkcji odlewów z ADI metodą wytapianych modeli. Opisano technologię formy, stanowisko do sferoidyzacji metodą drutową, linię technologiczną do hartowania izotermicznego odlewów. Podano przykłady produkcji odlewów z ADI metodą wytapianych modeli i ich własności przed i po[...]
EN Technology of ADI casting manufacturing applying investment casting process was presented. Mould technology, stand for Mg-treatment by flexible line, technological line for austempering were described. Examples of castings made by lost wax technology, their properties before and after heat treatment[...]
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Przemysł Spożywczy
PL W trosce o bezpieczeństwo konsumenta Komisja Europejska ustanowiła program ponownej oceny bezpieczeństwa dopuszczonych obecnie substancji dodatkowych. Ze względu na wyniki badań sugerujące niekorzystny wpływ barwników na zdrowie człowieka, jako pierwsza zostanie oceniona ta grupa substancji. Ocena b[...]
EN Safety of the consumer is the main aim of the re-evaluation programme of food additives which has been set up by the Commission. The top priority of evaluation is given to colours, because the results of new studies have been available since the original assessment was carried out. The re-evaluatio[...]
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Autobusy : technika, eksploatacja, systemy transportowe
2016 R. 17, nr 6 1211-1214
PL W pracy przedstawiono rezultaty badań wpływu temperatury hartowania izotermicznego na właściwości mechaniczne 4 rodzajów stopowych żeliw ADI zawierających Ni, Mn, Mo i Cu. W pracy, na podstawie przeprowadzonych pomiarów stwierdzono, że wraz ze zwiększeniem temperatury hartowania izotermicznego zmnie[...]
EN The paper presents results of the studies on the impact of the austempering temperature on mechanical properties of ADIs containing Ni, Mn, Mo, Cu. Based on the measurements, it has been found that along with an increase in the austempering temperature the mechanical strength of castings and the har[...]
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Advances in Materials Science
EN The aim of the present research is to check an analytical model of the kinetics of bainite transformation that will enable the producers of ADI to optimise the microstructure and mechanical properties and minimise the expensive and extensive experimental trials. A combination of thermodynamics and k[...]
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Zeszyty Naukowe. Mechanika / Politechnika Opolska
2009 z. 94 95-96
EN This paper includes some experimental results obtained in the turning of the GJS-500-7 nodular iron when using P20 uncoated cutting tools and ones coated with TiAlN single and TiC/Ti(C,N)/Al2O3/TiN multiple layers.
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Advances in Materials Science
EN Austempered ductile iron is an excellent material and it possesses attractive properties as high strength, ductility and toughness. [n this paper the neural technique was applied to the analysis of the ultimate tensile strength, the yield strength and elongation of austempered ductile iron (ADI). Es[...]
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Advances in Materials Science
EN The corrosion behavior of austempered ductile iron (ADI) in acidic environment bas been investigated at the microscaleby means of the electrochemical microcell technique, surface analysis methods and at the macroscale using the classical electrochemical techniques. Local electrochemical investigatio[...]
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Archives of Metallurgy and Materials
2016 Vol. 61, iss. 4 1985--1990
EN The paper presents results of the wear tests of chain wheels made of austempered ductile iron with various content of residual austenite. The aim of this study was to demonstrate the impact of the dynamic surface treatment (shot peening) on wear properties of surface layers of the chain wheels teste[...]
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Archives of Metallurgy and Materials
2016 Vol. 61, iss. 4 1833--1838
EN A person is forced to travel constantly throughout its entire life. The more modern the society, the greater the pace of life, and the greater the need to be present in many places that are distant from each other. Rail transport occupies second place in this regard, after air transport. This means [...]
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Journal of Polish CIMAC
EN In this work the attempt at quantitative evaluation of the microstructure of ADI cast iron matrix has been made. The automatic analysis of the image of the microstructure of austempered spheroidal cast iron has been used for the evaluation. The treatment variant was a two-phase austenitization. Firs[...]
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Archives of Metallurgy and Materials
2017 Vol. 62, iss. 3 1603--1607
EN High complexity of the physical and chemical processes occurring in liquid metal is the reason why it is so difficult, impossible even sometimes, to make analytical models of these phenomena. In this situation, the use of heuristic models based on the experimental data and experience of technicians [...]
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Archives of Metallurgy and Materials
EN The paper presents results of a two-stage study on the tribocorrosive wear of ADI alloy cast iron containing Ni and Cu. In the first stage of the wear tests with use test rig type pin-on-plate, there were determined the parameters of the process of tribocorrosion of the ADI cast iron in 3.5% NaCl so[...]
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Archives of Metallurgy and Materials
2018 Vol. 63, iss. 3 1417--1422
EN In the case of mining machines, tribocorrosion damage is often observed. This type of consumption is caused by the joint action of mining environment factors such as abrasive and water. The search for methods to counteract tribocorrosion is of great practical importance, but it must be combined with[...]
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Archives of Metallurgy and Materials
2019 Vol. 64, iss. 4 1661--1666
EN In this study a group of selected transformation kinetics equations is applied to describe the isothermal ferritic transformation in austempered ductile iron (ADI). A series of dilatometric tests has been carried out on ADI at different temperatures. The obtained experimental data are utilized to de[...]
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Archives of Foundry Engineering
EN This paper presents the results of the abrasive wear resistance of selected types of nodular cast iron, including ADI, cooperating with quartz sand and 100 grit abrasive paper. It has been shown that carbides in nodular cast iron cause an increase in wear resistance of 6 to 12% depending on the surf[...]
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Prace Instytutu Odlewnictwa
PL Do wyznaczenia kinetyki rozpadu ausferrytu w miedziowo-niklowym żeliwie ADI zastosowano model kinetyczny Johnsona-Mehla-Avramiego (JMA), przystosowany do badań prowadzonych w warunkach nieizotermicznych. Wykorzystując program Netzsch Thermokinetics 3 oraz metodę regresji liniowej dopasowano dane eks[...]
EN To determine the kinetics of ausferrite decomposition in copper-nickel ADI, a kinetic model of Johnson-Mehl-Avrami (JMA), designed for the investigations under non-isothermal conditions, was used. Applying the Netzsch Thermokinetics 3 programme and the method of linear regression, the experimental d[...]
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