Cutting Temperatures in End Milling of Compacted Graphite Irons

Silva, Leonardo Rosa Ribeiro da; Filho, Antonio Favero; Costa, Éder Silva; Pico, David Fernando Marcucci; Sales, Wisley Falco; Guesser, Wilson Luiz; Machado, Álisson Rocha

doi:10.1016/j.promfg.2018.07.056

Cited by 28 publications

(11 citation statements)

References 21 publications

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“…This happens because of the high temperatures and stresses involved and it becomes more critical as the tool wear grows. Lower machining forces and cutting temperatures for the CGI A in relation to CGI’s B and C were observed by Da Silva et al 24 in the milling process using TiAlN-coated cemented carbide tools, which further supports this hypothesis.…”

Section: Resultssupporting

confidence: 73%

“…This pattern of tool wear mechanism occurred during the machining of the three work materials tested, but because of the higher forces and temperature developed when machining the CGI’s B and C work materials, the tool wear rates are higher in the machining of these two latter work materials, compared to CGI A. Lower machining forces and cutting temperatures for CGI A in relation to CGI’s B and C were observed by Da Silva et al 24 in the milling process using TiAlN-coated cemented carbide tools.…”

Section: Resultsmentioning

confidence: 56%

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Tool wear monitoring in drilling of high-strength compacted graphite cast irons

Silva

Claro

Andrade³

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Machining is such a complex system that any foreseen result is practically impossible. However, research always helps to further understand the process, which contributes to providing positive results. Tool wear is always difficult to foresee, but it can be measured and related to several output parameters. In each individual application, there will be the best parameter that most reliably represents the tool wear. In the present investigation, the hole quality parameters (roughness and cylindricity), power consumption, electrical consumption of the machine tool and the acoustic emission signals were recorded and correlated to the tool condition in order to find the best output parameter for tool wear monitoring during the drilling of compact graphite cast irons. Two high-strength grades of compacted graphite cast irons (both CGI 500 with changes in the matrix and graphitic structure) were machined and compared to the standard grade (CGI 450) usually used in the manufacturing of engines using TiAlN-coated carbide drills at a constant cutting condition. The results showed that the best output parameter to monitor the tool wear was the electric current signal.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 56%

Tool wear monitoring in drilling of high-strength compacted graphite cast irons

Silva

Claro

Andrade³

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…Researchers have reported that cutting speed has the highest impact on the tool-chip interface temperature when compared to feed rate, which results in the softening of work material at the cutting zone. However, increasing the feed rate also results in increased chip thickness, which tends to carry more heat away from the cutting zone [29].…”

Section: Forcesmentioning

confidence: 99%

Experimental Investigation on the Effect of Different Micro-Geometries on Cutting Edge and Wiper Edge on Surface Roughness and Forces in Face Milling

Muthuswamy¹,

Nagarajan²

2021

Lubricants

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The significance of the micro-geometries on the cutting edge is known from numerous studies conducted in the past. However, the effect of micro-geometry on the wiper facet (also called the wiper edge) is not known. Hence, this paper investigates the effect of different micro-geometries with a focus on geometry variation on the wiper edge of a milling insert on surface roughness and forces in face milling of SAE1070 high-carbon steel. Milling inserts with sharp, rounded, chamfered edges and their combinations were manufactured on the cutting edge and wiper edge for the study. Critical surface quality parameters such as the average surface roughness (Ra), mean depth of surface roughness (Rz), and force components such as radial force (Fx), cutting force (Fy), and axial force (Fz) were evaluated. Metal cutting tests were performed at three different cutting speeds and three different feed rates to study the influence of cutting parameters and the effect of edge geometries on surface roughness. The results were correlated with the force values to understand the machining dynamics. Finite element analysis was performed to evaluate the high and low-stress zones on the insert, workpiece, and chip to understand the metal cutting mechanism of different micro-geometries. The novel finding from the study is that having identical micro-geometries on the cutting and wiper edge is the preferred combination, whereas dissimilar micro-geometries result in reduced surface quality, increased forces, and high stress on the workpiece and chip.

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“…According to Silva et al (2018), when milling vermicular cast iron, it is also possible to state that the temperature increases proportionally with the cutting speed, due to the greater kinetic energy involved. The author measured the chip temperature using a thermographic camera.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of the Diameter of Modified Tools With Internal Cooling Channels Under Different Thermal Flows

França

Silva

2021

RETERM

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In this work, the effect on heat generation at the chip-machine tool interface was studied by varying the diameter of internal grooves of a tool for the turning process. This tool is modified with internal channels that circulate water as a coolant through a closed system. As an output parameter, the maximum cutting temperature at the chip-tool interface was studied. The input parameters were the thermal flux present at the chip-tool interface and the diameter of the internal channels present in the cutting tool. All the analysis of variation of the internal channels of the tools and also of the thermal flow exerted on the chip-tool interface were carried out using the finite element method by the Ansys® Workbench 19.2 software. The main one was that the variation in the diameter of the tool's internal grooves does not expressly impact the machining specifications.

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Cutting Temperatures in End Milling of Compacted Graphite Irons

Cited by 28 publications

References 21 publications

Tool wear monitoring in drilling of high-strength compacted graphite cast irons

Tool wear monitoring in drilling of high-strength compacted graphite cast irons

Experimental Investigation on the Effect of Different Micro-Geometries on Cutting Edge and Wiper Edge on Surface Roughness and Forces in Face Milling

Study of the Influence of the Diameter of Modified Tools With Internal Cooling Channels Under Different Thermal Flows

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