Design of bronze-bonded grinding wheel properties

Denkena, Berend; Grove, Thilo; Bremer, Imke; Behrens, Leif

doi:10.1016/j.cirp.2016.04.096

Cited by 46 publications

(9 citation statements)

References 17 publications

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“…The hardness H and the critical bending strength σ c of the rock samples were used for the characterization of their mechanical properties. The critical bending strength can be used as a measure of load-bearing capacity and structural cohesion for solids with multiple phases, as has already been shown in [ 6 , 16 ]. The mentioned properties of the rocks used in this paper have already been investigated and discussed for different temperature levels in [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

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: Methodsmentioning

confidence: 99%

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

et al. 2022

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“…The critical bending strength can be used as a measure of the load-bearing capacity and structural cohesion of solids with several phases. It has already been used for describing the load-bearing capacity of rocks [6] and grinding wheel bonds [31]. Assuming that the area moment of inertia I yy of the samples can be calculated with Eq.…”

Section: Characterisation Of Rock Propertiesmentioning

confidence: 99%

Investigation of the material separation behaviour of rocks using scratch tests for the design of tool grinding processes

et al. 2022

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The use of natural rocks as cutting tool material poses an environmentally friendly alternative to conventional cutting tool materials. So far, however, the basics of tool grinding processes for rock tools have not been systematically investigated. This study, therefore, presents an investigation of the material removal mechanisms of four different types of rocks and a mono mineral via scratch tests analogous to a face plunge grinding process used in tool grinding. The aim is to contribute to a knowledge-based design of tool grinding processes for rock tools. This also includes a characterization of their mechanical properties. The occurring material removal mechanisms identified by SEM-images as well as width and depth of the scratches are used to evaluate the influence of single grain chip thickness and cutting speed on material removal mechanisms. The results show that ductile material removal is possible for all rocks in certain areas of single grain chip thicknesses ranging from 0.28 µm to 3.75 µm depending on the rock used and the applied cutting speed. Besides this, the results show optima for ductile material removal at single grain chip thicknesses that are up to 87-times higher than predicted by an analytical model. Additionally, recommendations for the design of the tool grinding process of the investigated rocks based on the obtained results are presented.

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“…The critical flexural strength σ c is used in this investigation to describe the load-bearing capacity and the structural cohesion of the rock samples or their microstructure under load. The critical bending strength is also suitable for describing the structural cohesion of solids with several phases and is also used to describe the load-bearing capacity of grinding wheel bonds [39]. An increased critical bending strength therefore also indicates an increased load-bearing capacity of the rock samples.…”

Section: Characterisation Of Rock Propertiesmentioning

confidence: 99%

Suitability of natural rocks as materials for cutting tools

et al. 2021

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This study presents an investigation of the usability and suitability of natural rocks as cutting tool materials. Therefore, indexable inserts are manufactured from eight different rocks and two mono minerals in this study and are used for turning of an aluminium alloy. Besides that, a characterization of the rock properties is performed. The wear of the rock tools and the surface roughness of the workpiece generated by the tools are used to evaluate their operational behaviour. Subsequently, the rock properties and the corresponding operational behaviour are used to assess the suitability of the rocks as cutting tool material. The results show that rock inserts can be used as cutting material for the turning of an aluminium alloy showing a width of wear marks between 83 and 1665 µm at the flank face after a cutting length of 500 m depending on the rock used. Furthermore, it is shown that rock tools are able to achieve surface roughness values which are comparable to those obtainable by using a conventional cemented carbide insert. The study shows that natural rocks can generally be used as alternative cutting material for the turning of aluminium. In addition a possible way for a systematic investigation and assessment of the suitability of natural rocks as cutting tool materials is presented, the relevance of the rock properties for the operational behaviour of the rock inserts is described and relevant future research topics concerning the use of rocks as cutting tool material are identified. Article highlights Demonstrating the possibility to use natural rocks as alternative environmentally friendly cutting tool material. Evaluation of operational behaviour and wear mechanisms of rock tools in turning aluminium. Identification of rock properties relevant for the operational behaviour of rock inserts.

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Design of bronze-bonded grinding wheel properties

Cited by 46 publications

References 17 publications

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

Turning Copper and Aluminum Alloys with Natural Rocks as Cutting Tools

Investigation of the material separation behaviour of rocks using scratch tests for the design of tool grinding processes

Suitability of natural rocks as materials for cutting tools

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