Simulation of Heat Flow in Computational Method and Its Verification on the Structure and Property of Gray Cast Iron

Shaha,

doi:10.3844/ajassp.2010.795.799

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…First, pig iron and mild steel were charged together in the furnace and heated up to about 1,350°C. The chemical composition of both Fe‐C‐Al and Fe‐C‐Si grades cast iron is shown is Table I details on the moulding and casting of Fe‐C‐Al cast iron (CI) can be found elsewhere (Shaha et al , 2010a, b). After casting, the metallographic samples were prepared following standard metallographic technique and the microstructural study was performed using field emission scanning electron microscope (FESEM).…”

Section: Methodsmentioning

confidence: 99%

“…The conventional grade Fe‐C‐Si cast iron has a complicated and multiphase structures whose property depends not only on the shape and size of the graphite flakes, but also on the morphology of the matrices. The mechanical and chemical properties of cast iron can be widely changed by alloy element addition, heat treatment or controlling the solidification of the alloy (Rivera et al , 2004; Bartocha et al , 2005; Xing et al , 2007; Shaha et al , 2010a, b). The wear property of gray cast iron mainly depends on the properties of the matrix and hence, by modifying the matrices of the gray cast iron it is possible to change the wear behaviour of the cast iron (Terheci et al , 1995; Xia et al , 2007; Buni et al , 2007).…”

Section: Introductionmentioning

confidence: 99%

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The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Maleque

Sugrib

2013

Industrial Lubrication and Tribology

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PurposeThe aim of this paper is to study the tribological behaviour of Fe‐C‐Al cast iron at different temperatures using universal pin‐on‐disk machine.Design/methodology/approachThe cold set resin bonded sand mould casting process was employed to develop Fe‐C‐Al cast iron and Fe‐C‐Si cast iron. The microstructures of materials were studied using field emission scanning electron microscope. The wear and friction tests were conducted using universal pin‐on‐disk machine at 25°C, 100°C, 200°C and 300°C temperature. The worn surface was characterized using scanning electron microscopy.FindingsThe lower wear rate was found for Fe‐C‐Al cast iron compared to Fe‐C‐Si cast iron and delamination type wear morphology was observed in both types of cast iron materials. The results also showed that the friction coefficient value of Fe‐C‐Al cast iron was lower than that of Fe‐C‐Si cast iron at different temperatures. It can be concluded that the overall tribological behaviour of Fe‐C‐Al cast iron at higher temperatures was better than conventional Fe‐C‐Si cast iron.Originality/valueThe information on the development and tribological properties of the Fe‐C‐Al cast iron at different temperatures is scarce in the literature. The special type of cold set resin bonded sand mould was used for casting this Fe‐C‐Al cast iron material. Therefore, the current study is quite new and it is hoped that it will provide a high value to the automotive and other engineering researchers for the application of this material.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Maleque

Sugrib

2013

Industrial Lubrication and Tribology

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“…Moreover, they designed and built an electronic computer controlled system for the measurement of flow rates and pressures inside the core box during mold filling, gassing and purging cycles of phenolic urethane amine process. The solidification process of cast iron in resin bonded sand mold system was studied utilizing a finite element analysis package [12]. To verify the model, the grey cast iron was melted and poured into a resin bonded sand mould at 1300 ı C. The solidification rate was found to be low at the sprue end and reasonably high at the mold wall.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Resin Bonded Sand Mould System Using Design of Experiments and Central Composite Design

Surekha

Rao²,

Rao

et al. 2012

Journal for Manufacturing Science and Production

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In this paper an attempt has been made for linear and non linear modeling of resin bonded sand mould system using full factorial design of experiments and response surface methodology, respectively. It is important to note that the quality of castings produced using the resin bonded sand mould system depends largely on properties of moulds, which are influenced by the characteristics of sand, like type of sand, grain fineness number, grain size distribution and quantity and type of resin, catalyst, curing time etc. In the present study, percentage of resin, percentage of hardener, number of strokes and curing time are considered as input parameters and the mould properties, such as compression strength, shear strength, tensile strength and permeability are treated as responses. In the present work, phenol formaldehyde is used as the resin whereas tetrahydrophthalic anhydride as the hardener. A two level full factorial and three level central composite designs are utilized to develop input-output relationships. Surface plots and main effects plots are used to study the effects of amount of resign, amount of hardener, number of strokes and curing time on the responses, namely, compression strength, tensile strength, shear strength and permeability. Moreover, the adequacies of the developed models have been tested using analysis of variance. The prediction accuracy of the developed models have been tested with the help of twenty test cases and found reasonably good accuracy.

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“…In order to vary the cooling rate and casting junction design [12], two cast shapes were considered: a. Stepped plate: each step of 100 X 25 mm width and length.…”

Section: Experimental Workmentioning

confidence: 99%

Prediction of Hypoeutectic Gray Iron Microstructure during Solidification and Solid Transformation Using Simple Fourier Model

Hanafi

Mahallawy

Elsabbagh

et al. 2010

KEM

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Phases’ evolution during the solidification of a hypoeutectic 3.92% C-equivalence cast iron was modelled by considering the cooling history of the alloy from the melt, thus including both solidification and solid state transformations. Simple Fourier model was used to combine macroscopic heat flow and microscopic kinetics for phase evolution. Different cooling rates were obtained by casting cylinders and stepped plates. Measured number of primary austenitic nuclei, eutectic cells and volume fraction of phases during solidification (graphite, a-ferrite, pearlite and cementite), are correlated with the cooling rate. Growth rate constants for primary austenite, are found to be  = 8.7E-7, and n = 2.3. Growth rate constants for primary graphite (types A, B, and C), are found to be  =5.7E-7, and n = 2. The model matches with the experimental work where the error percent of modelling volume fractions of pearlite, graphite, ferrite and cementite ranges between 0.2 and 1.5%.

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Simulation of Heat Flow in Computational Method and Its Verification on the Structure and Property of Gray Cast Iron

Cited by 7 publications

References 10 publications

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Modeling and Analysis of Resin Bonded Sand Mould System Using Design of Experiments and Central Composite Design

Prediction of Hypoeutectic Gray Iron Microstructure during Solidification and Solid Transformation Using Simple Fourier Model

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