Increasing of Utility Properties of Grey Cast Iron Castings with Heat Treatment

Eperješi, Š.; Malik, J.; Vasková, Iveta; Fecko, D.

doi:10.1515/afe-2015-0029

Cited by 6 publications

(5 citation statements)

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“…Therefore, the area of fine crystals develops with primary orientation in the direction opposite to the heat removal direction. [8,9] The structure of aluminium castings of the analysed samples consists of α -solid solution (primary released) and eutectic (Figure 10). The eutectic appears to be a two-phase structure consisting of α -solid solution and silicon.…”

Section: T -It Is Time [S]mentioning

confidence: 99%

Thermal Factors of Die Casting and Their Impact on the Service Life of Moulds and the Quality of Castings

Matisková¹,

Mura²,

Selye³

2013

ACTA POLYTECH HUNG

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This article deals with the analysis of the temperature factors of die casting and the conditions of the service life of moulds. It also describes a mechanism of the origin of internal structures and development of crystallisation grains of aluminium castings depending on the degree of undercooling. The monitored factors are very important in terms of production efficiency and the quality of the casting, which is positively reflected in the most important economic indicators of the production. In die casting, the melted metal is pressed under high temperature into a mould cavity of significantly lower temperature. The mould is then exposed to thermal strain of individual surface layers of the mould material. The speed of cooling of the castings in the metal mould increases, causing an increase of thermal gradients in the casting. Intensive heat exchange between the casting and the metal mould has a negative effect on fluidity, which increases the danger of incomplete replenishment and the occurrence of cold joints.

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Section: T -It Is Time [S]mentioning

confidence: 99%

Thermal Factors of Die Casting and Their Impact on the Service Life of Moulds and the Quality of Castings

Matisková¹,

Mura²,

Selye³

2013

ACTA POLYTECH HUNG

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“…The cylinder liners of commercial diesel engines are generally 2 Advances in Tribology made of grey cast iron. The grey cast iron is tempered at 300-370 ∘ C range [9]. This range of the tempering temperature is a fundamental challenge to the application of TiN coatings at the PRCL interface of these engines because grey cast iron loses it hardness after tempering.…”

Section: Introductionmentioning

confidence: 99%

Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine

Uddin

Kamran

Ahmad

et al. 2018

Advances in Tribology

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Piston ring and cylinder liner (PRCL) interface is a major contributor to the overall frictional and wear losses in an IC engine. Physical vapor deposition (PVD) based ceramic coatings on liners and rings are being investigated to address these issues. High temperature requirements for applications of conventional coating systems compromise the mechanical properties of the substrate materials. In the current study, experimental investigation of tribo-mechanical properties is conducted for various titanium nitride (TiN) coated PRCL interfaces in comparison with a commercial PRCL system. Low-temperature PVD based TiN coating is successfully achieved on the grey cast iron cylinder liner samples. Surface roughness of the grey cast iron cylinder liner substrates and the thickness of TiN coating are varied. A comprehensive comparative analysis of various PRCL interfaces is presented and all the trade-offs between various mechanical and tribological performance parameters are summarized. Coating thickness between 5 and 6 micrometres reports best tribo-mechanical behaviour. Adhesion and hardness are found to be superior for the TiN coatings deposited on cylinder liner samples with higher roughness, i.e., ~ 5-micron Ra. Maximum 62 % savings on the COF is reported for a particular PRCL system. Maximum 97% saving in cylinder liner wear rate is reported for another PRCL system.

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“…The mechanical properties of gray iron depend on the microstructures developed during solidification [7,8]. Inoculation at various levels was also done to be able to make a recommendation towards attaining the desired microstructure and properties [9]. Major constituents of gray cast irons are carbon in the range of 1.7-4.5% and silicon in the range of 1-3%.…”

Section: Introductionmentioning

confidence: 99%

Processing and Effect of Heat treatment on Mechanical Properties of Gray Cast Iron

Teja¹,

Prashanth²,

Phanindran³

et al. 2016

IJERT

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Gray cast iron belongs to materials used in production of casted products, which have wide application for different processing industries. Wide spectrum of properties of these materials is given by the structure of base metal matrix, which can be influenced with heat treatment. Generally the ferrous alloys which have carbon contents of more than 2% are treated as cast irons, from this family of cast irons which contains graphite in form of flakes and shows gray fracture are considered to be gray cast iron. Investigations are carried out to study the effect of heat treatment on micro structure and mechanical properties of gray cast iron. This study was carried out to determine a suitable heat treatment process which would give the best of gray cast iron in terms of mechanical properties. The casted gray cast iron product which is used to prepare glass beverage bottles are subjected to hardening and tempering heat treatments followed by oil quenching at elevated temperatures by which the variations obtained are briefly studied. This study reveals that the hardened gray cast iron shown high hardness value as compared to hardened and tempered gray cast iron.

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Increasing of Utility Properties of Grey Cast Iron Castings with Heat Treatment

Cited by 6 publications

References 0 publications

Thermal Factors of Die Casting and Their Impact on the Service Life of Moulds and the Quality of Castings

Thermal Factors of Die Casting and Their Impact on the Service Life of Moulds and the Quality of Castings

Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine

Processing and Effect of Heat treatment on Mechanical Properties of Gray Cast Iron

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