The Althoff-Radtke Test Adapted for High Chromium Cast Iron

• Autorzy: Kopyciński D. , Siekaniec D. , Szczęsny A. , Sokolnicki M. , Nowak A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of the possibility of adapting the Althoff-Radtke test for High Chromium Cast Iron. The Althoff-Radtke test is a clump attempt used for steel. The Althoff-Radtke test has four different lengths of clamp which qualifies it as a test to quantitatively take into account different kinds of shrinkage ΔL. The length of the slot of the cracked corner and the length of each staple (50 - 350 mm) are the parameters tendency to cast cracks. Castings of white cast iron have a high tendency to hot cracking due to the large range of solidification temperatures, unfavorable kinetics parameters of shrinkage, and especially a lack of expansion before shrinkage. Shrinkage of high chromium white cast iron is similar to the shrinkage of cast steel, and is approximately 2%. Therefore it is important to test susceptibility to hot cracks. Research was carried out under industrial conditions. Four melts were performed, one of the initial chemical composition and the other three modified by different amounts of Fe-Ti, respectively, 0.25%, 0.5% and 0.75% Fe-Ti. The propensity for hot cracking was based on the observation of the dark surface in the corner of the sample. The study shows that the Althoff-Radtke test can be adapted to determine the tendency for hot cracking of high chromium cast iron. It should however be noted that the test results can not be compared with those for other alloys.

Słowa kluczowe

EN

mechanical properties; casting defect; hot crack; high chromium cast iron

PL

właściwości mechaniczne; wada odlewu; pęknięcie gorące; żeliwo wysokochromowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 4
• Strony: 61--64
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Kopyciński D.

• AGH University of Science and Technology, Department of Foundry Engineering, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Siekaniec D.

• AGH University of Science and Technology, Department of Foundry Engineering, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Szczęsny A.

• AGH University of Science and Technology, Department of Foundry Engineering, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Sokolnicki M.

• Odlewnie Polskie S.A. based in Starachowice, al. Wyzwolenia 70, 27-200 Starachowice, Poland

autor

Nowak A.

• Odlewnie Polskie S.A. based in Starachowice, al. Wyzwolenia 70, 27-200 Starachowice, Poland

Bibliografia

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• [4] Röhring, K. & Wolters, D. (1970). Legiertes Gusseisen T.1. Gusseisen mit Lamellengraphit und karbidisches Gusseisen. Düsseldorf. Giesserei-Verlag.
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• [6] Tabrett, C.P., Sare, I.R. & Ghomashchi, M.R. (1996). Microstructure-property relationships in high chromium white iron alloys. International Materials Reviews. 41(2), 59-82.
• [7] Bennet, S., Bevries, K. & Williams, M. (1974). Adhesive Fracture Mechanics. International Journal of Fracture. 10, 33.
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• [9] Jura, S., Cybo, J. & Jura, Z. (2001). Pęknięcia na gorąco odlewów staliwnych problemem ciągle nierozwiązanym. Archives of Foundry. 1(2/2), 512-519. (in Polish).
• [10] Qiang, Liu. (2012). Control of Wear-Resistant Properties in Ti-added Hypereutectic High Chromium Cast Iron. Sweden: Licentiate Thesis, Royal Institute of Technology, Stockholm.
• [11] Bedolla-Jacuinde, A., Correa, R., Mej´ıa, I., Quezada, J.G. & Rainforth, W.M. (2007). The effect of titanium on the wear behavior of a 16%Cr white cast iron under pure sliding. Wear. 263, 808-820.
• [12] Kopyciński, D., Guzik, E., Siekaniec, D. & Szczęsny, A. (2015). The effect of addition of titanium on the structure and properties of High Chromium Cast Iron. Archives of Foundry Engineering. 15(3), 35-38.
• [13] Studnicki, A., Dojka, R., Gromczyk, M. & Kondracki, M. (2016). Influence of Titanium on Crystallization and Wear Resistance of High Chromium Cast Iron. Archives of Foundry Engineering. 16(1), 117-123.
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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.