Influence of metalworking fluid additives on the thermal conditions in grinding

Meyer, Daniel; Wagner, A.

doi:10.1016/j.cirp.2016.04.016

Cited by 25 publications

(7 citation statements)

References 13 publications

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“…6,7 Water-based cutting fluids provide a superior cooling effect; however, to obtain lower friction between the ejecting chip and tool and prolong the tool life, additives are introduced into the cutting fluids. 8 Lower tool wear rate and surface roughness have been reported with the introduction of nanoparticles into the cutting fluids during machining. 9 In addition, during turning, longer tool life was obtained through the addition of silver nanoparticles as the additive into the cutting fluid.…”

Section: Introductionmentioning

confidence: 99%

“…A good cutting fluid must have high thermal conductivity to reduce thermal expansion and avoid distortion of the tool and workpiece 6,7 . Water‐based cutting fluids provide a superior cooling effect; however, to obtain lower friction between the ejecting chip and tool and prolong the tool life, additives are introduced into the cutting fluids 8 . Lower tool wear rate and surface roughness have been reported with the introduction of nanoparticles into the cutting fluids during machining 9 .…”

Section: Introductionmentioning

confidence: 99%

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An investigation into the tribological behaviour of cutting fluid additives on Ti‐6Al‐4V alloy

Gali

Riahi

2022

Lubrication Science

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The performance of polymer-based and phosphorus-based cutting fluid additives have been shown to depend on the machining conditions employed. This study investigated the tribological behaviour behind the previously reported machining performance of polymer-based and phosphorus-based additives on Ti-6Al-4V using ball-on-disc tests. The coefficient of friction (COF) was evaluated using ball-on-disc tests, surface characterisation was performed on the Ti-6Al-4V and steel ball counterfaces to investigate the wear and friction reduction mechanisms. The tribological performance of the phosphorus-based additive was observed to be influenced by the applied load and temperature. The activation of this additive resulted in a reduction in COF at elevated temperatures. However, the activation temperature was observed to be influenced by the applied load. The COF associated with the polymer-based additive was noted to increase as the temperature increased, regardless of the applied load. The formation of tribolayers from the additives was related to the COF behaviour as well as the surface damage on Ti-6Al-4V and lower material transfer to the steel counterfaces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An investigation into the tribological behaviour of cutting fluid additives on Ti‐6Al‐4V alloy

Gali

Riahi

2022

Lubrication Science

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“…The high percentage of water enables an efficient dissipation of heat from the contact zone and thus reduces the thermal load of tool and workpiece [1]. The individual composition of the metalworking fluid can have a considerable effect on the performance in the machining process [3]. Beside the primary tasks of metalworking fluids: lubrication, cooling and the removal of chips and grinding swarf; there are various further requirements such as corrosion inhibition, long term stability, wettability, and low or no risks to workers and the environment.…”

Section: Introductionmentioning

confidence: 99%

Influence of artificial aging on the lubricating ability of water miscible metalworking fluids

Seidel

Meyer

2019

Prod. Eng. Res. Devel.

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The understanding of the complex aging processes of water miscible metalworking fluids and their effect on the performance in machining processes is of high relevance for the metalworking industry. Nevertheless, only little knowledge is available in this context. Due to the highly dynamic interactions in the complex ecosystem "metalworking fluid", a distinct correlating of the aging process with the performance of the fluid in metalworking processes is hardly possible. Consequences of the aging process on physical, chemical and biological properties of the fluid have been described in several research works. These consequences comprise aspects such as the decrease of the pH-value, the increase of the droplet size, the presence of bacterial cells or the modification of the metalworking fluid composition. The novel approach of the presented work aims to investigate the individual influence of isolated aging aspects on the lubricity of metalworking fluids. Therefore, selected aging aspects were artificially varied separately from each other and evaluated in tribological experiments. It could be shown that the physical presence of bacterial cells as well as extracellular polymeric substances have positive influence on the lubricating ability while the pH-value has no effect and the droplet size only a slight influence on the fluids performance. The results reveal essential knowledge for the design of future monitoring and maintenance strategies for water miscible metalworking fluids.

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“…There is a wide range of additives to customize the properties to specific needs, such as biocidal, antiwear (AW), extreme pressure (EP), antifoam, or emulsifying additives [3]. The individual composition of the fluid can have a considerable effect on the performance in the machining process [4].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Aging on the Lubricity of Metalworking Fluids by Means of Design of Experiment

Seidel

Meyer

2019

Lubricants

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The influence of complex aging processes in water-miscible metalworking fluids on process performance is of high relevance for the metalworking industry. Because of the highly dynamic interactions in the complex "metalworking fluid" ecosystem, a distinct correlation between the aging process and the performance of the fluid in metalworking processes is hardly possible. Consequences of the aging process on physical, chemical, and biological properties of the fluid include aspects such as the decrease of the pH value, the increase of the droplet size in emulsions, the presence of bacterial cells, or the modification of the metalworking fluid composition. In the presented work, the influences of these aging aspects on the lubricity of metalworking fluids were investigated individually. A test series has been carried out, which was planned with a design of experiments method, to investigate interactions between the aging aspects regarding lubricity. In addition, the results enabled the development of an empirical regression model, which allowed an integrated description of the influence of the relevant aging aspects.Lubricants 2019, 7, 94 2 of 12 system, and the temperature is constantly within a convenient sector. The microorganisms can utilize the wide range of chemical compounds in metalworking fluids almost entirely to cover their demand of carbon and energy [5]. An intense maintenance of the cooling lubricant is crucial for a long service life, whereby particular attention is given to the bacterial load. The colonization of metalworking fluids by microorganisms such as bacteria or fungi has been investigated since the 1940s and is still the subject of various research activities [6][7][8][9][10][11]. When the fluid has been colonized, microbial growth in metalworking fluids can neither be completely avoided nor is the initial state of the fluid composition recoverable. Within a few weeks, the microbial load of metalworking fluids can reach a level of 10 7 (or more) colony-forming units per milliliter [8,10]. The standard method of avoiding bacterial load is the addition of biocidal products such as bactericides and fungicides [9]. The treatment with ultrasound, ozone, or UV radiation are further strategies [11]. All those methods reveal specific disadvantages, such as negative influence on emulsion properties, localized or selective impact, or they are harmful to health and the environment [1].Simultaneous to a decreasing number of additives over time due to the metabolic activity of microorganisms, compounds of microbial origin are released continuously in the metalworking fluid, such as low-molecular metabolites, surface-active agents, or extracellular polymeric substances (EPSs). The changes taking place in the cooling lubricant are shown schematically in Figure 1. Other consequences of bacterial colonization are decreasing pH values, increasing droplet sizes [8], or mechanical problems in the metalworking fluid cycle due to clogging of filters, pumps, and so on, by biofilms [7]. Further changes in the metalw...

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Influence of metalworking fluid additives on the thermal conditions in grinding

Cited by 25 publications

References 13 publications

An investigation into the tribological behaviour of cutting fluid additives on Ti‐6Al‐4V alloy

An investigation into the tribological behaviour of cutting fluid additives on Ti‐6Al‐4V alloy

Influence of artificial aging on the lubricating ability of water miscible metalworking fluids

Investigation of the Influence of Aging on the Lubricity of Metalworking Fluids by Means of Design of Experiment

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