The Effects of Silicon on The Hardness and Wear of Ferritic Grey Cast Iron on Shoe Brake of Train

Darmo, Suryo; Setyana, Lilik Dwi; Tarmono, T.; Santoso, Nugroho

doi:10.1088/1757-899x/384/1/012017

Cited by 9 publications

(8 citation statements)

References 4 publications

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“…The trend of hardness looks similar between specimens with variations in rpm. The hardness is particularly affected by the kind of phase of the microstructure [17]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Characteristic of Interface Bimetal Aluminum-Copper for Bimetal Bushing Produced by Centrifugal Casting

Santoso

Suharnadi

Prayoga

et al. 2021

Acta Metall Slovaca

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Bimetallic is a type of metal composite that combines two metals that form a metallurgical bond. The manufacture of bimetallic bushings by centrifugal casting has not been developed much. Recently, there is no recommendation yet for optimum temperature and speed of rotation to produce bimetallic bushings. The research was conducted to determine the rotation of the mold in centrifugal casting so as to produce a well-integrated interface. The materials used are aluminum and copper. Aluminum was melted at 750 °C, while copper was melted at 1200 °C. Molten metal was pouring alternately. First, aluminum was poured into the mold, and then after the aluminum temperature reached 400º C, copper was poured into the mold to form a bushing aluminum-copper bimetallic. The molten metal was poured into a rotating sand mold with a constant filling speed of about 0.15 kg s-1. The variations of the rotational speed of the mold were 250, 300, and 350 rpm. The result shows that the interface’s width increases as the mold rotation increases during the pouring process. Interface hardness and wear are increased compared to the base metal. Hence, centrifugal casting with 350 rpm is recommended for aluminum-copper bimetal bushing applications.

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“…The trend of hardness looks similar between specimens with variations in rpm. The hardness is particularly affected by the kind of phase of the microstructure [17]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Characteristic of Interface Bimetal Aluminum-Copper for Bimetal Bushing Produced by Centrifugal Casting

Santoso

Suharnadi

Prayoga

et al. 2021

Acta Metall Slovaca

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“…Hardness of α-case is 644 up to 766 VHN, which caused by the oxygen contamination and finer microstructure on the surface [24]. The hardness is particularly influenced by the kind of phase of the microstructure [25]. Oxygen can extend the α phase region, which shows that α phase will be easily formed with increasing oxygen content [26].…”

Section: Discussionmentioning

confidence: 99%

Oblique Gate Direction During Centrifugal Casting in Artificial Lumbar Disc Model of CP-Ti

Setyana

Mahardika

Suyitno³

2020

Acta Metall Slovaca

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Oblique gate direction in different angles was hardly applied in centrifugal casting. The purpose of this research was to determine the effects of oblique gate direction in centrifugal casting on density, porosity, roughness, and microstructures in the artificial lumbar disc model. The angles of the oblique gate were ranged from 30º to 150º toward to the runner. The sharp turn of the gate would cause retardations and losses friction that decreased the pressure in molten metal. This process caused the porosity and the surface roughness decreased while the density increased. The product in which the oblique gate direction was the same with the mold rotation was better than the one in the opposite direction. The tangential forces would increase the forces acting on molten metal when entered the mold with the oblique gate direction that same with the mold rotation. Gate with the θ of 90º was the most widely used, but the product was better to use the gate with the θ of 60º than the product with the θ of 90º. Hence, to obtain an artificial lumbar disc model with less porosity, high density, and smooth surface, the oblique gate of 60º should be applied.

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“…The phosphorus eutectic is characterized Materials 2023, 16, 6797 2 of 23 by a high hardness (500-600 HB) and high fragility, which explains why it has a great influence on the properties of cast iron. The amount of phosphorus eutectic in cast iron is directly dependent on the phosphorus content, which is also influenced by factors that increase the tendency of phosphorus to segregate [1,12,13]. When the phosphorus content increases, there is an increase in the tensile strength of the cast iron due to graphite and perlite finishing.…”

Section: Introductionmentioning

confidence: 99%

“…With respect to cast iron, microporosity must be taken into account. This is generally specific to gray cast iron due to contraction microcavities that occur in intercellular spaces but is strongly accentuated in the case of a phosphorus cast iron, when these spaces solidify at low temperatures, resulting in the separations of the phosphorous eutectic [5,12,14].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Chemical Composition of Brake Shoes According to the Hardness Recommended by the Product Standard

Ardelean,

Bucur,

Birtok-Băneasă

et al. 2023

Materials

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Optimizing the chemical composition of phosphorus cast iron for the manufacture of brake shoes, which are used in the rolling stock, is based on specific tests, and the results must be within the specified limits of railway standards. This paper presents the processing of data taken from an economic agent producing brake shoes—with chemical composition and hardness values determined through the Brinell method—as well as optimizing these data by obtaining optimal variation intervals. These technological intervals are useful in the case of foundries in order to obtain superior products from a qualitative point of view.

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The Effects of Silicon on The Hardness and Wear of Ferritic Grey Cast Iron on Shoe Brake of Train

Cited by 9 publications

References 4 publications

Characteristic of Interface Bimetal Aluminum-Copper for Bimetal Bushing Produced by Centrifugal Casting

Characteristic of Interface Bimetal Aluminum-Copper for Bimetal Bushing Produced by Centrifugal Casting

Oblique Gate Direction During Centrifugal Casting in Artificial Lumbar Disc Model of CP-Ti

Optimizing the Chemical Composition of Brake Shoes According to the Hardness Recommended by the Product Standard

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