SiMo Ductile Iron Crystallization Process

Stawarz, M.

doi:10.1515/afe-2017-0027

Cited by 20 publications

(14 citation statements)

References 5 publications

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“…In [15], the use of the wear resistant Fe-C-Cr alloys have been proposed instead of some steel castings. The article [16] shows the method of cheap ductile iron production on the base of steel scrap, while the authors of [17,18] presented the high-silicon cast iron and SiMo iron capabilities and advantages. The authors of [19][20][21] thoroughly described the outstanding properties of the CGI iron while comparing it with the Ductile Iron (DI).…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Gating System for Steel Castings

Jezierski

Dojka

Janerka

2018

Metals

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Abstract:The article presents the attempt to optimize a gating system to produce cast steel castings. It is based on John Campbell's theory and presents the original results of computer modelling of typical and optimized gating systems for cast steel castings. The current state-of-the-art in cast steel casting foundry was compared with several proposals of optimization. The aim was to find a compromise between the best, theoretically proven gating system version, and a version that would be affordable in industrial conditions. The results show that it is possible to achieve a uniform and slow pouring process even for heavy castings to preserve their internal quality.

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Section: Introductionmentioning

confidence: 99%

Optimizing the Gating System for Steel Castings

Jezierski

Dojka

Janerka

2018

Metals

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“…Other ingredients added during the melting was Ranco carburizer, ferrosilicon FeSi75, and FeMo65 rich alloy (for SiMo ductile cast iron). The spheroidization process (for SiMo ductile iron) of cast iron was conducted in the bottom of the ladle, after covering the nodulizing agent by pieces of steel scrap [13]. Magnesium rich alloy used in the studies was FeSiMg5RE.…”

Section: Description Of the Work Methodologymentioning

confidence: 99%

Physicochemical Properties of Silicon Cast Iron

Stawarz¹,

Kajzer²,

Kajzer³

et al. 2017

Archives of Foundry Engineering

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The article presents results of pitting corrosion studies of selected silicon cast irons. The range of studies included low, medium and high silicon cast iron. The amount of alloying addition (Si) in examined cast irons was between 5 to 25 %. Experimental melts of silicon cast irons [1-3] were conducted in Department of Foundry of Silesian University of Technology in Gliwice and pitting corrosion resistance tests were performed in Faculty of Biomedical Engineering in Department of Biomaterials and Medical Devices Engineering of Silesian University of Technology in Zabrze. In tests of corrosion resistance the potentiostat VoltaLab PGP201 was used. Results obtained in those research complement the knowledge about the corrosion resistance of iron alloys with carbon containing Si alloying addition above 17 % [4-6]. Obtained results were supplemented with metallographic examinations using scanning electron microscopy. The analysis of chemical composition for cast irons using Leco spectrometer was done and the content of alloying element (silicon) was also determined using the gravimetric method in the laboratory of the Institute of Welding in Gliwice. The compounds of microstructure were identify by X-ray diffraction.

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“…The pieces of magnesium master alloy had size between 5 and 10 mm. It is characterized by a reduced magnesium content and a higher amount of rare earth elements, including cerium and other lanthanides; it was used for nodularization in research [6]. Chemical composition of metal charge was as follows: 0.08% C, 0.001% Si, 0.04% Mn, 0.004% Cu, 0.046% Al, 0.006% S, 0.016% P.…”

Section: Methodsmentioning

confidence: 99%

Selected Phenomena of the In-Mold Nodularization Process of Cast Iron That Influence the Quality of Cast Machine Parts

2017

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This paper discusses a problem connected with the production process of ductile iron castings made using the in-mold method. The study results are presented showing that this method compromises the quality of the cast machine parts and of the equipment itself. Specifics of the nodularization process using the in-mold method do not provide the proper conditions for removal of chemical reaction products to the slag, i.e., the products stay in the mold cavity and they also decrease the quality of the casting. In this work, corrosion-type defects were diagnosed mostly on the surface of the casting and some compounds in the near-surface layer-i.e., fayalite (Fe 2 SiO 4 ) and forsterite (Mg 2 SiO 4 )-which cause discontinuities in the metal matrix. The results presented here were selected based on experimental melts of ductile iron. The elements of the mold used in this study, the shape of the mixing chamber, charge materials, method of melting, temperature of liquid metal, etc. were directly related to the production conditions. An analysis was conducted of the chemical composition using a Leco GDS500A spectrometer and a carbon and sulfur Leco CS125 analyzer. Metallographic examinations were conducted using a Phenom-ProX scanning electron microscope with an EDS system.

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SiMo Ductile Iron Crystallization Process

Cited by 20 publications

References 5 publications

Optimizing the Gating System for Steel Castings

Optimizing the Gating System for Steel Castings

Physicochemical Properties of Silicon Cast Iron

Selected Phenomena of the In-Mold Nodularization Process of Cast Iron That Influence the Quality of Cast Machine Parts

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