Application of Natural Rocks in Cutting Aluminum

Wolters, Philipp; Picker, Tobias; Breidenstein, Bernd; Krödel, Alexander; Denkena, Berend

doi:10.1007/978-3-030-78424-9_26

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…At the same time, this would provide the industry with the opportunity to advance the transition to a more sustainable economy, which is particularly important in the context of climate change. The machining of comparatively soft materials, such as aluminum and copper alloys or plastics, has already been identified as the first potential area of application in which natural rocks could be used as alternative, and environmentally friendly, cutting tool materials [ 6 , 7 ]. However, their operational behaviors, such as their process forces, tool wear and their interactions, have not been investigated so far.…”

Section: Introductionmentioning

confidence: 99%

“…Bending strength and texture orientation were defined as the main selection criteria for their usage as a cutting tool. The possibility of grinding indexable inserts from rocks and using them in turning operations was also demonstrated [ 6 , 7 ]. The present study extends these investigations to include the influence of tool and rock properties after grinding on the process forces during machining.…”

Section: Introductionmentioning

confidence: 99%

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Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

et al. 2022

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The need for rare resources, such as tungsten or cobalt, combined with the high energy requirements to produce cutting materials, is forcing research and development to work out environmentally friendly alternatives. Natural rocks could be an alternative since they are available in large quantities worldwide, have a potentially suitable property profile, and do not require energy-intensive processes to make them usable as cutting materials. However, there are only a few studies on the usability and suitability of natural rocks as cutting materials for machining processes. Therefore, in this article, inserts made of natural rocks were ground and used in turning operations. First, the properties of various natural rocks were determined, as were the tool properties after grinding. Then, the tool load and wear during the machining process were recorded and evaluated to assess the potential applications of this alternative cutting material more accurately. It is therefore becoming apparent that flint and quartz are suitable for use as alternative cutting materials and should be further researched.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

et al. 2022

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Design of tool grinding processes for indexable inserts made of rocks

Wolters

Breidenstein

Denkena

et al. 2022

Int J Adv Manuf Technol

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Using natural rocks as alternative cutting tool material poses a possibility to meet actual environmental, economic and geopolitical challenges. The present state of knowledge, however, is not sufficient to allow a knowledge-based design of the tool grinding process of cutting tools made of rock. For this reason, this study presents an investigation of the significance of the grinding process parameters and grinding tool specifications for the flank face and cutting edge roughness as well as for the cutting edge microgeometry besides an analysis of the scatter of the grinding results in tool grinding of rock inserts. Thus, the study contributes to a knowledge-based design of tool grinding processes of rock tools. In this context, confocal and focus variation microscopes are used besides SEM images to investigate the above mentioned factors in the plunge face grinding of rock inserts from five different rocks. The results identify the axial feed velocity of the plunge face grinding process as a highly significant influence factor for cutting edge roughness and microgeometry, while cutting speed only shows a significant influence on cutting edge microgeometry. Besides that, highly significant influences of the used rock type and the abrasive grain size are identified for all three mentioned factors. Grinding result analyses show a scatter between 0.04 and 25.00 µm depending on the parameter and rock investigated. Additionally, recommendations for the design of the tool grinding process of rock tools are presented deduced from the obtained results.

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Tool wear when using natural rocks as cutting material for the turning of aluminum alloys and plastics

Breidenstein

Denkena

Bergmann

et al. 2022

Prod. Eng. Res. Devel.

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The growing challenges regarding climate-neutral and resource-saving manufacturing technology is forcing research and development to work out new cutting tool alternatives since the production of conventional cutting materials requires rare raw materials and huge amounts of energy. Natural rocks could be such an alternative since they are available in large quantities worldwide, have a potentially suitable property profile, and do not require energy-intensive processes to make them usable as cutting material. However, according to the current state of knowledge, there are only a few studies on the usability and suitability of natural rocks as cutting materials for machining processes. Therefore, in this article, inserts made of natural rocks are ground and used in turning operations. Their operational behavior is then described by the occurring tool wear and workpiece surface roughness. The influence of different natural rocks, process parameters as well as cutting edge microgeometries is compared after the machining of aluminum alloys and plastic. In the end, this made it possible to define process and tool properties in which natural rocks have application potential.

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Application of Natural Rocks in Cutting Aluminum

Cited by 8 publications

References 11 publications

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

Design of tool grinding processes for indexable inserts made of rocks

Tool wear when using natural rocks as cutting material for the turning of aluminum alloys and plastics

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