Turning particulate metal matrix composites: Experimental study of the evolution of the cutting forces, tool wear and workpiece surface roughness with the cutting time

Davim, J. Paulo

doi:10.1243/0954405011515433

Cited by 37 publications

(16 citation statements)

References 7 publications

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“…Higher cutting speeds are not advantageous in all the cases except when PCD and CBN tools are used 9,10 . Davim 11 identified that the medium cutting speed ranges from 200-450 m/min are recommended for carbide and coated carbide tools for better surface finish and reduced tool wear. The maximum cutting speeds used with PCD tools is up to 700 m/min.…”

Section: Introductionmentioning

confidence: 99%

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Basavarajappa

Davim

2013

Mat. Res.

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This study presents an experimental investigation on surface roughness and chip formation in turning of Al 2219/15SiCp and Al 2219/15SiCp-3Gr (hybrid) composites. Experiments were conducted with different cutting conditions using carbide, coated carbide and polycrystalline diamond (PCD) tools. The results reveal that the surface roughness values are less for coated carbide tools compared to carbide and are minimum for PCD tools. The incorporation of graphite in Al 2219/15SiCp composite increases the surface roughness. This is due to smearing and removal of softer and amorphus graphite particles on the surface of the specimen, creates pits on the machined surface which increases the surface roughness values. The graphitic composite produced discontinuous chips leads to easy machining. PCD tool performs better than carbide and coated carbide tools.

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Section: Introductionmentioning

confidence: 99%

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Basavarajappa

Davim

2013

Mat. Res.

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“…A similar experiment has been conducted on turning of MMCs using PCD inserts and found that the cutting forces increases with flank wear of the inserts. The feed and depth forces are more sensitive to this increase [9]. A predictive model has been developed while machining of Al-SiC-MMC using ANOVA and ANN.…”

Section: Introductionmentioning

confidence: 99%

Effect of modified drill point geometry on drilling quality characteristics of metal matrix composite (MMCs)

Singh

2016

J Mech Sci Technol

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The abrasive reinforcement present in 'Metal matrix composites' (MMCs) is responsible for numerous machining challenges for the research fraternity. The increase in tool wear, burr formation, surface roughness, and increase in cutting forces are few of such machining challenges during the drilling of MMCs. The present research investigation explores the effect of change in drill point geometry on the drilling Quality characteristics (QCs) of the drilled hole wall. The drilling QCs under investigation are, Specific cutting pressure (SCP) and Surface roughness (SR) of the drilled hole wall. The levels of the input process parameters for optimum values of the output responses were established by Taguchi's methodology. SEM images and contour plots of drilled hole wall have been used to qualitatively explain the drilling behavior of MMCs. The chip formation mechanism observed during drilling establishes the cutting behavior of the different cutting edges of the modified drill point geometry. It has been observed that the single conical chips were produced by primary cutting edge and single ring type chips were produced by secondary cutting edge. The step diameter is the main factor which influences the SCP followed by the feed and point angle. The surface roughness of the drilled hole wall has been governed by the cutting speed, feed and step diameter. Burnishing and honing effect were observed on the drilled hole wall surface because of entrapped free SiC particles using SEM.

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“…As result of these properties and potential applications, a great necessity exits to understand the questions associated with the production and machining of such materials. Machining MMCs is a rather complex task owing to its heterogeneity and to the fact that reinforcements are extremely abrasive [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The machinability of MMCs reinforced with particles of SiC (20%) using PCD tools was studied having in consideration the evolution of the cutting time of the tool wear, the cutting forces and the surface roughness workpieces [1][2][3]. Later, was evaluated the performance of the CVD diamond tools in machining of these composites [4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental cutting model of metal matrix composites (MMCs)

Davim¹,

Silva²,

Baptista³

2007

Journal of Materials Processing Technology

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Turning particulate metal matrix composites: Experimental study of the evolution of the cutting forces, tool wear and workpiece surface roughness with the cutting time

Cited by 37 publications

References 7 publications

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Effect of modified drill point geometry on drilling quality characteristics of metal matrix composite (MMCs)

Experimental cutting model of metal matrix composites (MMCs)

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