Influence of Process Parameters on Ceroxide Formation in Low-Carbon Steels

• Autorzy: Vaucheret A. , Nicolini C. , Carton J.-F. , Jacquet P.

Identyfikatory

DOI

10.7494/jcme.2017.1.4.90

• Języki publikacji: EN

Abstrakty

EN

Ceroxides are surface defects caused by a mold-metal reaction during the casting process of steels. This type of defect may affect a large area, but it is located only on the skin of the parts. It does not affect the core of the parts nor its mechanical properties. Nevertheless, ceroxides induce a lack of material on the surface, forming a kind of crater and needing complementary surfacing. The defect is also composed by several non-metallic inclusions containing Al, Mg, Si and O. An EDX analysis by mapping show these elements involved in the mold-metal reaction. The presence of these oxides could confirm the hypothesis of the deoxidizer reoxidation found in the bibliography. To better understand the specific conditions of ceroxide formation, the first step was to find of way to generate systematically this defect at each casting. Two patterns with different filling rate were designed, simulated on Quikcast and tested. The pattern with turbulent filling rate allowed the formation of ceroxide at each casting and so was used during this study. This result shows that the filling rate of the mold could be considered as a first order parameter in ceroxide formation. Then, a specific experimental set up was designed to characterize this defect. The analysis of the defect was done for sizing it: surface and depth. Finally, some key parameters on defect formation were determined like the nature of deoxidizer or the amount of oxygen in the mould. Some laboratory tests were lead to show the influence of these parameters by characterization of the casted parts in comparison with a reference sample. This study allowed us to find process parameters responsive of ceroxide formation and to propose some way of improvement to reduce the size and the occurrence of ceroxides.

Słowa kluczowe

EN

ceroxide; low carbon steel; mold/metal reaction; deoxidation

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Journal of Casting & Materials Engineering
• Rocznik: 2017
• Tom: Vol. 1, no. 4
• Strony: 90--96
• Opis fizyczny: Bibliogr. 12 poz., fot., rys.

Twórcy

autor

Vaucheret A.

• Université de Lyon, ECAM Lyon, INSA-Lyon, LabECAM, F-69005 Lyon, France
• LaBoMaP, Arts et Métiers ParisTech, 71250 Cluny, France

autor

Nicolini C.

• Université de Lyon, ECAM Lyon, INSA-Lyon, LabECAM, F-69005 Lyon, France
• LaBoMaP, Arts et Métiers ParisTech, 71250 Cluny, France
• SAFE Metal, 1 Boulevard de la Boissonnette, 42110 Feurs, France

autor

Carton J.-F.

• SAFE Metal, 1 Boulevard de la Boissonnette, 42110 Feurs, France

autor

Jacquet P.

• Université de Lyon, ECAM Lyon, INSA-Lyon, LabECAM, F-69005 Lyon, France
• LaBoMaP, Arts et Métiers ParisTech, 71250 Cluny, France

Bibliografia

• [1] Les poches et leur garnissage vis-à-vis des céroxydes. (1968). CTIF (Centre Technique des Industries de la Fonderie), Report N°1752.
• [2] Campbell J. (2015). Casting Alloys. In: Campbell J., Complete Casting Handbook. Metal Casting Processes, Metallurgy, Techniques and Design. Second Edition. Butterworth-Heinemann, 223–340.
• [3] Vingas G.J. & Zrimsek A.H. (1965). US Patent no. 3216078 A, Process for casting steel and compositions of matter for use therein.
• [4] Colbaut A. & Beauvais P. (2005). Abreuvage de pièces massives en fonte coulées en sable à prise chimique. Fonderie-Fondeur d’Aujourd’hui, 250, 38–46.
• [5] Lyman W.S., Boulger F.W. & Briggs C.W. (1963). Character and source of the ceroxide defect on steel castings. Transactions of the American Foundrymen’s Society, 71, 358–368.
• [6] Beeley P. (2001). Defects in castings. In: Beely P., Foundry Technology. Second Edition, Butterworth-Henemann, 239–318.
• [7] Mahaney J.K. Jr (1999). Advances in the production and use of steel with improved internal cleanliness. ASTM Special Technical Publication 1361.
• [8] Chaume V. (2008). Internship Report, made with SAFE Metal for ESFF master degree.
• [9] Belding P. (1971). The control of non-metallic inclusions in cast steel. Thesis for the degree of Master of Science. Oregon State University.
• [10] Cuenin P. (1994). Moulage – Noyautage. Techniques de l’Ingénieur, Report M3512
• [11] Datta P.K., Du H.L., Burnell-Gray J.S. & Ricker R.E. (2005). Corrosion: Materials, Environments, and Industries, ASM Handbook, ASM International, 13B.
• [12] Desbordes M. (1930). Le modeleur-mécanicien. Eyrolles edition

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).