Influence of tool material properties on the wear behavior of cemented carbide tools with rounded cutting edges

Denkena, Berend; Michaelis, Alexander; Herrmann, Mathias; Pötschke, Johannes; Krödel, Alexander; Vornberger, Anne; Picker, Tobias

doi:10.1016/j.wear.2020.203395

Cited by 22 publications

(16 citation statements)

References 11 publications

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“…With these materials, the difference in effective hardness at the cutting edge increases in comparison with the ambient temperature hardness. These changed tool properties influence directly the occurring tool wear [ 14 ].…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the different process temperatures not only influence the occurring flank wear, but also the rake face contact length and the resulting crater wear [ 14 ]. In previous investigations, higher thermal conductivity led to higher contact between the rake face and chip [ 14 ]. With the present results, this can be explained by the lower temperatures in the contact area and a resulting lower chip curvature.…”

Section: Discussionmentioning

confidence: 99%

“…According to the temperature measurements, the temperatures decrease at lower cutting speeds, which in turn lead to higher rake face contact length. Thus, the hypotheses put forward in [ 14 ] regarding rake face contact and crater wear could be validated.…”

Section: Discussionmentioning

confidence: 99%

“…Wear mechanisms such as flank and crater wear as well as cutting edge chipping depend strongly on the used tool material and cutting edge microgeometry. For example, flank wear can be reduced by increasing cemented carbide hardness or decreasing the cutting edge rounding, while the rake face contact length and thus crater wear can only be reduced by decreasing thermal conductivity of the used tool material [ 14 ]. The current study expands this investigation to also include the material properties at elevated temperatures and measurements of the arising process temperatures close to the cutting edge.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Cemented Carbide Composition on Cutting Temperatures and Corresponding Hot Hardnesses

et al. 2020

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During metal cutting, high temperatures of several hundred-degree Celsius occur locally at the cutting edge, which greatly impacts tool wear and life. Not only the cutting parameters, but also the tool material’s properties influence the arising cutting temperature which in turn alters the mechanical properties of the tool. In this study, the hardness and thermal conductivity of cemented tungsten carbides were investigated in the range between room temperature and 1000 °C. The occurring temperatures close to the cutting edge were measured with two color pyrometry. The interactions between cemented carbide tool properties and cutting process parameters, including cutting edge rounding, are discussed. The results show that cemented carbides with higher thermal conductivities lead to lower temperatures during cutting. As a result, the effective hardness at the cutting edge can be strongly influenced by the thermal conductivity. The differences in hardness measured at room temperature can be equalized or evened out depending on the combination of hardness and thermal conductivity. This in turn has a direct influence on tool wear. Wear is also influenced by the softening of the workpiece, so that higher cutting temperatures can lead to less wear despite the same effective hardness.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Cemented Carbide Composition on Cutting Temperatures and Corresponding Hot Hardnesses

et al. 2020

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“…Singh et al [25] reported better tribological behavior and wear performance of TiAlN-coated cutting tools, and a friction reduction of 16% to 39% with textured tools. Denkena et al [26] pointed out that some tool shape modifications such as honed and chamfered cutting edges and cutting edge micro geometry can reduce cutting force and tool wear, in addition to facilitate longer tool life. Kuntoğlu and Sağlam [27] used Taguchi to predict and evaluate progressive tool wear and gave the optimization result of machining parameters during turning process.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental investigation into the machining performance in axial ultrasonic vibration-assisted cutting of Ti6Al4V

Zhang

Wang

et al. 2021

Int J Adv Manuf Technol

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Axial ultrasonic vibration-assisted cutting (AUVC) has proved to have better machining performance compared with conventional cutting methods; however, the effect of numerous and complex influencing factors on machining performance has not been clearly revealed and a recommended combination of cutting conditions has not been proposed yet, especially for difficult-to-machine material such as Ti6Al4V alloy. This paper focuses on experimental and theoretical investigation into machining performance when cutting Ti6Al4V with the AUVC method. First, a retrospective of the separation characteristics of AUVC is provided and the variable parameter cutting characteristics are demonstrated. We classify the influencing factors on machining performance into four categories: machining parameters, vibration parameters, tool choice, and cooling conditions. The relationship between these factors in terms of their effect on machining performance is established theoretically. Then, it describes experiments to determine the influence of these factors on cutting force, tool life, and surface roughness. For absolute influence, the orders for cutting force, tool life, and surface roughness are respectively cutting depth > amplitude > feed rate > rotation speed, rotation speed > feed rate > amplitude > cutting depth, and feed rate > amplitude > cutting depth > rotation speed. However, for relative influence, the order is unified as: amplitude > feed rate > rotation speed > cutting depth. Finally, it suggests a smaller feed rate, larger amplitude, moderate rotation speed, and smaller cutting depth in addition to a WC tool coated with TiAlN and used under HPC cooling condition for optimal performance of AUVC. This recommendation is based on the theoretical analysis and experimental results of cutting force, surface roughness, and tool life.

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Investigation of Machined Surface Roughness and Cutting Tool Wear from Prepared Tool Geometry

Straka

Peterka

2022

Machine and Industrial Design in Mechanical Engineering

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Influence of tool material properties on the wear behavior of cemented carbide tools with rounded cutting edges

Cited by 22 publications

References 11 publications

Influence of Cemented Carbide Composition on Cutting Temperatures and Corresponding Hot Hardnesses

Influence of Cemented Carbide Composition on Cutting Temperatures and Corresponding Hot Hardnesses

Theoretical and experimental investigation into the machining performance in axial ultrasonic vibration-assisted cutting of Ti6Al4V

Investigation of Machined Surface Roughness and Cutting Tool Wear from Prepared Tool Geometry

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