Analysis of ductile iron production on steel scrap base

Janerka, K.; Jezierski, J.; Bartocha, D.; Szajnar, J.

doi:10.1179/1743133614y.0000000103

Cited by 12 publications

(10 citation statements)

References 2 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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“…Increasing the amount of steel scrap necessitates the addition of additional ingredients to raise the levels of carbon and silicon. These include anthracite, FeSi and SiC [7,9,10]. A positive effect of additives on the values of the VPS parameter was noticed.…”

Section: Influence Of Charge Materials On the Metallurgical Quality O...mentioning

confidence: 87%

“…They can be divided into base materials that make up the base material of the alloy, auxiliary materials that are used to adjust the chemical composition or that carry alloying elements, and materials that are used to remove contaminants. For melting ductile iron, a typical charge has the following structure: pig iron, steel scrap, returned scrap of ductile iron and ferroalloy and carburizer [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Metallurgical Quality of Nodular Cast Iron in the Production Conditions of a Foundry

Dwulat¹,

Janerka

2023

JMMP

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The aim of this research was to determine the factors affecting the metallurgical quality of cast iron during serial production of castings using a campaign cupola and a holding furnace. The problem to be solved, which was to obtain cast iron with the required mechanical properties while reducing the internal porosity, results from the foundry’s need to increase the metallurgical quality of the alloy. The increasing difficulty and complicated constructions of castings, for which it is not possible to introduce risers at the stage of technological design, make the stage of proper preparation of cast iron the only way to obtain castings without shrinkage defects. The article presents the results of the study of physicochemical and mechanical properties, microstructure and shrinkage tendency of ductile iron depending on the charge materials used, the amount of Mg used during spheroidization and the type of final inoculants. Step castings and wedge tests were produced on a vertical molding line. The spheroidization was carried out by injecting a core wire containing Mg alloy into the cast iron. The final inoculation of 0.2% was performed using a pneumatic dispenser equipped with a vision system to control the effectiveness of the inoculation. The ITACA Meltdeck thermal analysis system was used to study the physicochemical properties of the initial cast iron, and the ITACA X system to analyze the state of the final cast iron on the molding line. Mechanical tests were performed on samples cut from a stepped casting, and microstructure tests were carried out using a light microscope and a scanning electron microscope. The results of thermal analyses show that increasing the share of pig iron at the expense of steel increases the minimum solidification temperature of eutectic, and thus, increases the potential for graphite nucleation in cast iron. Increasing the nucleation potential can be obtained by adding anthracite, FeSi and SiC. A very important factor in obtaining cast iron of high metallurgical quality is the possible limitation during spheroidization of the length of the core wire containing Mg, which is a carbide-forming element. The lower the initial sulfur level, the greater the possibility of reducing the amount of cored wire. The inoculants containing Ce and Bi were the most advantageous final inoculants from the point of view of obtaining the best microstructure parameters and plastic properties of cast iron.

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“…Industries have discovered various materials and process combinations that exhibit surprisingly good strength, wear and corrosion resistance materials for longer life. Ductile iron has properties that when worked upon, could make it to be a possible replacement for forged steels in many applications, 1 Janerka et al 2 The industrial potency of any nation is predicated to a large extent on its steel technology of which ductile is a good alternative; it is thus a source of concerned that in most third world countries, the steel technology is still very low. Therefore, agricultural development depends partly on agricultural implements which are made of ductile iron.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zirconia Dispersion on Mechanical and Corrosion Properties of Ductile Iron

Olaniran¹

2017

MSEIJ

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The increasing applications of ductile iron in most of the major industries, especially in marine, food processing, chemical and electrochemical, agriculture and petroleum industries have made them versatile construction materials. Their good mechanical and chemical properties, chemical composition, weld ability, ease of casting, provide the best-round performance at relatively low cost. This work focuses on the production, mechanical and corrosion studies on ductile iron composite. Ductile Iron composite was produced by sand casting process with varied percentage composition of zirconia. The influence of the zirconia reinforcement on the mechanical; hardness and tensile, properties were investigated. Similarly, the effect of the zirconia on the corrosion property of the composite in 3M NaCl solution at room temperature was studied. From the results, it was observed that the tensile strength and yield strength decreases with increasing percentage composition of the zirconia reinforcement. However, dispersion of the zirconia reinforcement within the matrix of ductile iron considerably improved the corrosion resistance of the composite.

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Analysis of ductile iron production on steel scrap base

Abstract: K . J a n e r k a , J. J e z i e r s k i * , D . B a r t o c h a a n d J. S z a j n a r

Cited by 12 publications

References 2 publications

Optimizing the Gating System for Steel Castings

Optimizing the Gating System for Steel Castings

Evaluation of the Metallurgical Quality of Nodular Cast Iron in the Production Conditions of a Foundry

Effect of Zirconia Dispersion on Mechanical and Corrosion Properties of Ductile Iron

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