Wear Mechanism when Machining Compacted Graphite Iron

Abele, Eberhard; Sahm, Alexander; Schulz, Herbert

doi:10.1016/s0007-8506(07)61464-4

Cited by 82 publications

(35 citation statements)

References 7 publications

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“…It was also found that in experiments machining CGI with cutting speed of 150 m/min, a percentage of pearlite relatively high influenced tool life. However, with cutting speeds higher than 250 m/min, this variable is not significant anymore (Dawson et al, 2001;Abele, Sahm and Schulz, 2002).…”

Section: Resultsmentioning

confidence: 99%

“…This work is an attempt to answer, which is the influence of the variation of CGI Ti level (without leaving the residual level) in tool life, workpiece surface roughness and cutting power in a turning process. (Abele, Sahm and Schulz, 2002;Dawson, 2007). The components and phases present in high percentage in cast iron are mainly graphite, pearlite and ferrite.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of tool wear, surface roughness and cutting power in the turning process of compact graphite irons with different titanium content

Rosa¹,

Diniz²,

Andrade³

et al. 2010

J. Braz. Soc. Mech. Sci. & Eng.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of tool wear, surface roughness and cutting power in the turning process of compact graphite irons with different titanium content

Rosa¹,

Diniz²,

Andrade³

et al. 2010

J. Braz. Soc. Mech. Sci. & Eng.

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“…It is well known that, the decreased in tool life is due to the absence of Manganese-Sulfide (MnS) layer, which acts as a protective surface to avoid adhesion at the toolchip interface in the case of machining CI [5,10]. The most significant difference between CI and CGI is the sulfur content.…”

Section: -255mentioning

confidence: 99%

“…Owing to the improved properties, CGI is considered a suitable candidate to substitute the grey cast iron in various components for diesel engine; such as engine blocks, cylinder heads and cylinder sleeves [4]. [5] Furthermore, the outstanding mechanical strength of CGI material enables the CGI-based engines to operate at higher temperature and cylinder pressure, which improved fuel consumptions, hence produce lower levels of emissions. In addition, CGI is lighter than CI as confirmed by Hyundai Motor Company whereby their CGI-based engine of 1.8L I-4 Diesel is 22 % lighter compared to the CI-based engine of the same kind [3].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cutting force and surface roughness in high-speed milling of compacted graphite iron

et al. 2017

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Abstract. Compacted Graphite Iron, (CGI) is known to have outstanding mechanical strength and weightto-strength ratio as compared to conventional grey cast iron, (CI). The outstanding characteristics of CGI is due to its graphite particle shape, which is presented as compacted vermicular particle. The graphite is interconnected with random orientation and round edges, which results in higher mechanical strength. Whereas, graphite in the CI consists of a smooth-surfaced flakes that easily propagates cracks which results in weaker and brittle properties as compared to CGI. Owing to its improved properties, CGI is considered as the best candidate material in substituting grey cast iron that has been used in engine block applications for years. However, the smooth implementation of replacing CI with CGI has been hindered due to the poor machinability of CGI especially at high cutting speed. The tool life is decreased by 20 times when comparing CGI with CI under the same cutting condition. This study investigates the effect of using cryogenic cooling and minimum quantity lubrication (MQL) during high-speed milling of CGI (grade 450). Results showed that, the combination of internal cryogenic cooling and enhanced MQL improved the tool life, cutting force and surface quality as compared to the conventional flood coolant strategy during highspeed milling of CGI.

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“…In contrast, the graphite particles in compacted graphite iron are vermicular particles. These particles are elongated and randomly oriented as in grey iron; however, they are shorter and thicker and have round edges (Abele et al, 2002).…”

Section: Introductionmentioning

confidence: 96%