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1
Content available Odlewy bimetalowe z wysokochromową warstwą roboczą
Wróbel T., Szajnar J., Cholewa M., Wróbel P., Tenerowicz S.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2s
87--90
PL
W prac przedstawiono technologię bimetalicznych odlewów warstwowych opartą na odlewniczej metodzie nakładania warstw bezpośrednio w procesie odlewania tzw. metodę preparowania wnęki formy. Wykonane tą metodą bimetaliczne odlewy warstwowe złożone są z dwóch zasadniczych elementów tj. części nośnej oraz części (warstwy) roboczej. Część nośną odlewu warstwowego stanowiło typowe tworzywo odlewnicze tj. żeliwo szare z grafitem płatkowym, natomiast część roboczą stanowiła stal stopowa ferrytyczna gatunku X6Cr 13 lub martenzytyczna gatunku X39Cr 13. Weryfikację wykonanych bimetalicznych odlewów warstwowych przeprowadzono w oparciu o nieniszczące badania ultradźwiękowe, badania metalograficzne makro- i mikroskopowe.
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. grey cast iron with flake graphite, whereas working part is plate of ferritic alloy steel sort X6Cr 13 or martensitic alloy steel sort X39Cr 13. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, metallographic macro and microscopic researches.
2
Content available Odlewy bimetalowe z chromowo-nikolową[!] warstwą roboczą
Wróbel T., Szajnar M., Cholewa M., Wróbel P., Suchoń J., Tenerowicz S.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2s
81--86
PL
W prac przedstawiono technologię bimetalicznych odlewów warstwowych opartą na odlewniczej metodzie nakładania warstw bezpośrednio w procesie odlewania tzw. metodę preparowania wnęki formy. Wykonane tą metodą bimetaliczne odlewy warstwowe złożone są z dwóch zasadniczych elementów tj. części nośnej oraz części (warstwy) roboczej. Część nośną bimetalicznego odlewu warstwowego stanowiło typowe tworzywo odlewnicze tj. staliwo niestopowe lub żeliwo szare z grafitem płatkowym, natomiast część roboczą stanowiła stal stopowa austenityczna gatunku X2CrNi 18-9 lub ferrytyczno-austenityczna gatunku X2CrNiMoN 22-5-3. Weryfikację wykonanych bimetalicznych odlewów warstwowych przeprowadzono w oparciu o nieniszczące badania ultradźwiękowe, badania struktury oraz mikrotwardości. Ponadto wykonano symulację komputerową procesu krzepnięcia bimetalicznych odlewów warstwowych w programie NovaFlow&Solid.
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. unalloyed cast steel or grey cast iron with flake graphite, whereas working part is plate of austenitic alloy steel sort X2CrNi 18-9 or ferritic-austenitic alloy steel sort X2CrNiMoN 22-5-3. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, structure and microhardness researches. Moreover was made computer simulation of solidification of bimetallic layered casting with use of NovaFlow&Solid software.
3
Content available remote Examples of material solutions in bimetallic layered castings
Wróbel T., Cholewa M., Tenerowicz S.
Archives of Foundry Engineering
|
2011
|
Vol. 11, iss. 3
11-16
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. pearlitic grey cast iron, whereas working part (layer) is depending on accepted variant plates of alloy steels sort X6Cr13, X12Cr13, X10CrNi18-8 and X2CrNiMoN22-5-3. The ratio of thickness between bearing and working part is 8:1. The verification of the bimetallic layered castings was evaluated on the basis of ultrasonic NDT (non-destructive testing), structure and macro- and microhardness researches.
4
Content available remote Bimetallic layered castings alloy steel - carbon cast steel
Wróbel T., Cholewa M., Tenerowicz S.
Archives of Foundry Engineering
|
2011
|
Vol. 11, iss. 1
105-108
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. ferritic-pearlitic carbon cast steel, whereas working part (layer) is plate of austenitic alloy steel sort X10CrNi 18-8. The ratio of thickness between bearing and working part is 8:1. The quality of the bimetallic layered castings was evaluated on the basis of ultrasonic NDT (non-destructive testing), structure and macro- and microhardness researches.
5
Content available remote Bimetallic layer castings
Cholewa M., Wróbel T., Tenerowicz S.
Journal of Achievements in Materials and Manufacturing Engineering
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2010
|
Vol. 43, nr 1
385--392
EN
Purpose: In paper is presented technology of bimetallic layer casting in configuration: working part (layer) from ferritic or austenitic alloy steel and bearing part from grey cast iron. Design/methodology/approach: In applied technology surface layer on the basis of alloy steel at 2 or 5mm thickness was put directly in founding process of cast iron with use of preparation of mould cavity method. Quality of bimetallic layer castings was estimated on the base of ultrasonic non-destructive testing and examination of the structure and selected usable properties i.e. hardness. Findings: The results of studies and their analysis show efficiency of new, innovative technology of heat-resisting layer castings. Research limitations/implications: In further research, authors of this paper are going to application of different type of alloy steels on working part (layer) of bimetallic casting. Practical implications: On the basis of research results was affirmed that application of thinner plates i.e. about thickness 2mm causes their deformation in time of pouring, what disqualify this layer casting for industrial application. Considerably best results was obtained with use thickness of plate 5mm. Originality/value: The value of this paper resides in new effective method of manufacture of heat-resisting castings, mainly for lining of quenching car to coke production.
6
Content available remote Diffusion phenomena between alloy steel and gray cast iron in layered bimetallic casting
Cholewa M., Wróbel T., Tenerowicz S., Szuter T.
Archives of Metallurgy and Materials
|
2010
|
Vol. 55, iss. 3
771-777
EN
The work presents bimetallic layered casting technology in configuration: the upper layer of high chromium steel or chrome-nickel steel with layer made of cast iron casting. In presented technology of layered bimetallic castings steel elements with a thickness of 1.5 and 5mm. It was used a process of overlay of a surface layer, directly during casting process so-called mould cavity preparation method. Steel elements were placed in sand mould just before pouring the liquid gray cast iron. Verification of bimetallic castings was based on ultrasonic non-destructive testing and examination of the structure and selected utility properties.
PL
W pracy przedstawiono technologie bimetalicznych odlewów warstwowych w konfiguracji: warstwa wierzchnia na bazie stali wysokochromowej lub chromowo-niklowej z podłożem w postaci odlewu z żeliwa szarego. W przedstawionej technologii bimetalicznych odlewów warstwowych użyto do uszlachetnienia warstwy wierzchniej elementów stalowych o grubości 1,5 i 5mm, które w wyniku zastosowania metody nakładania warstw bezpośrednio w procesie odlewania tzw. metodą preparowania wnęki formy, zostały umieszczone w formach piaskowych bezpośrednio przed zalaniem ciekłym żeliwem szarym. Weryfikacje wykonanych bimetalicznych odlewów warstwowych przeprowadzono w oparciu o nieniszczace badania ultradźwiękowe oraz badania struktury i wybranych własności użytkowych.
7
Content available remote Studies of the transition zone in steel - chromium cast iron bimetallic casting
Tenerowicz S., Suchoń J., Cholewa M.
Archives of Foundry Engineering
|
2010
|
Vol. 10, iss. 1
199-204
EN
In this work authors presented the results of transition zone studies on steel - cast iron interface in bimetallic casting. During the investigations cylindrical castings with different diameter were prepared of cast iron with steel rods placed in the center. From each bimetallic casting a microsection was prepared for microhardness tests and metalographic analysis, consisting of transition zone measurement, point and linear analysis as well as quantitative analysis.
8
Content available remote Enrichment of surface of low-alloyed cast iron with use of austenite layer
Szajnar J., Cholewa M., Tenerowicz S., Wróbel T.
Archives of Foundry Engineering
|
2010
|
Vol. 10, iss. 1
187-190
EN
In paper is presented method of obtainment of bimetallic casting for lining of quenching car to coke production. In range of studies were made bimetallic casting of cast iron with chromium-nickel steel plates for their different thickness, researches of joint quality with use of ultrasonic method, metallographic examinations of microstructure and researches of selected usable properties.
9
Content available remote Quality of the joint between cast steel and cast iron in bimetallic castings
Cholewa M., Tenerowicz S., Wróbel T.
Archives of Foundry Engineering
|
2008
|
Vol. 8, iss. 3
37-40
EN
The paper presents conception and production method of skeleton composite castings with use of cast steel G35CrSiMnMoNi skeleton casting and chromium cast iron EN-GJN-XCr15 filling. Working elements in winning machines and devices, which work in intensive aberasive wear i.e. liner of exhausters, percussive and ram hammers, are destination of bimetallic castings. Skeleton geometry was based on three-dimensional symmetrical cubic net consisting of circular connectors and nodes joining 6 connectors according to Cartesian coordinate system. Dimension of an elementary cell was equal to 10 mm and diameter of single connector was equal to 5 mm. In range of studies were casted cast steel skeletons with chromium cast iron filling and based on metallographic research on light and scanning electron microscope was made quality assessment of joint in bimetallic castings. Moreover in range of studies was used microanalysis of chemical composition in transition zone of cast steel-cast iron joint.
10
Content available remote Spatial bimetallic castings manufactured from iron alloys
Cholewa M., Tenerowicz S., Suchoń J.
Archives of Foundry Engineering
|
2007
|
Vol. 7, iss. 3
33-38
EN
In this paper a conception for manufacturing method of skeleton castings with composite features was shown. Main application of such castings are the working organs of machines subjected to intensive abrasive and erosive wear. Skeleton geometry was based on three-dimensional cubic net consisting of circular connectors and nodes joining 6 connectors according to Cartesian coordinate system. Dimension of an elementary cell was equal to 10 mm and diameter of single connector was equal to 5 mm. For bimetallic castings preparation two Fe based alloys were used: L25SHMN cast steel for skeleton substrate and ZlCr15NiMo cast iron for working part of the casting. In presented work obtained structure was analyzed with indication of characteristic regions. Authors described phenomena occurring at the alloys interface and phases in transition zone. A thesis was formulated concerning localization of transition zone at the cast iron matrix - cast steel reinforcement interface. Direction of further studies were indicated.
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