The influence of cryogenic supercritical carbon dioxide cooling on tool wear during machining high thermal conductivity steel

Mulyana, Tatang; Rahim, Erween Abd; Yahaya, Shamy Nazrein Md

doi:10.1016/j.jclepro.2017.07.019

Cited by 59 publications

(23 citation statements)

References 43 publications

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“…An advantageous impact of scCO2 plus MQL in respect to cutting forces, cutting temperature and tool life was shown. Furthermore, the positive effect of the CMQL rises as the scCO2 flow rate and the MQL flow rate increase [Mulyana 2017]. These studies substantiate the beneficial use of scCO2 plus MQL in machining.…”

Section: State Of the Artmentioning

confidence: 57%

“…To prevent a blockage of this channel an adequate solubility or miscibility of the two fluids is necessary. Supekar, Stephenson, Rahim and Mulyana raise the pressure and temperature of the CO2 above the critical point (critical temperature ϑcr = 30,98 °C, critical pressure pcr = 73,8 bar) to pass the CO2 from liquid to supercritical state of aggregation [Mulyana 2017 As reference dry machining and experiments with MQL were conducted. An advantageous impact of scCO2 plus MQL in respect to cutting forces, cutting temperature and tool life was shown.…”

Section: State Of the Artmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on the Productivity of Milling Ti6al4v With Cryogenic Minimum Quantity Lubrication

Gross¹,

Appis²,

Hanenkamp³

2019

MM SJ

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Because of its unique material properties, Ti6Al4V is used for components in the aerospace industry which are subject to high mechanical and thermal loads. Due to that, this material is considered as difficult to cut from a machining point of view. In order to improve productivity in machining Ti6Al4V the use of an effective cooling and lubrication strategy is necessary. This challenge can be managed with the innovative hybrid technology (CMQL) combining liquid carbon dioxide (CO2) and minimum quantity lubrication (MQL) being under investigation in this article. At first, investigations on the liquid CO2 release behaviour and the application of oil by the CMQL were conducted. Secondly, CNC milling experiments were carried out using carbide end mills. The CMQL technique was compared to MQL and flood cooling in respect to tool wear, cutting moment and surface integrity. For the milling operations the cooling parameters of the CMQL as well as the cutting parameters were modified, in order to reduce tool wear or increase productivity. The analysis revealed that the development of an appropriate CO2 free jet and a continuous application of oil by the CMQL is achievable without changing the state of aggregation of CO2 from liquid to supercritical. The analysis of the milling experiments indicated that CMQL is more advantageous compared to flood cooling and MQL for higher cutting parameters.

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Section: State Of the Artmentioning

confidence: 57%

Section: State Of the Artmentioning

confidence: 99%

Investigation on the Productivity of Milling Ti6al4v With Cryogenic Minimum Quantity Lubrication

Gross¹,

Appis²,

Hanenkamp³

2019

MM SJ

View full text Add to dashboard Cite

show abstract

“…Life cycle cost (LCC) consider the cost of raw materials, manufacturing, transportation, operation and recovery, which is becoming the main cost analysis approach. Material efficiency is related to the proportion of recycled material which need the designers to determine the quantitative value, while operation cost mainly considers the cost of power, cutting fluid [58], and lubricant oil [59,60] used for the same test part. The cost of labor due to difference values between countries is generally neglected.…”

Section: Economic Factorsmentioning

confidence: 99%

The Analysis of Key Technologies for Sustainable Machine Tools Design

Feng

Shi

2020

Applied Sciences

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Machine tools as indispensable tools for manufacturing products are typical high-energy, high-carbon manufacturing systems due to their larger mass, longer life cycles and huge resources and energy consumption. The current research trend of sustainable machine tools aims to reduce cost, energy consumption and increase sustainability without compromising their functionality, usability, productivity, accuracy, etc. However, there is a lack of systematic reviews about what are the key technologies for sustainable machine tools design. Thus, a comprehensive literature review of machine tool design for sustainability is needed in order to make clear how to design and evaluate sustainable machine tools from the viewpoint of life cycle sustainability analysis. The aim of this paper is to review the sustainable design and assessment aspects of machine tool design from partial goals to integrated aims according to whole sustainability dimensions such as the environment, economy and society, as well as involving key techniques in different life cycle stages. Recent research and study on improving directly or indirectly sustainability performance of machine tools according to focus points could be summarized as: design optimization of components such as lightweight using topology and bionic methods; structure design with modular design and layout; reducing cutting fluids and lubricant oil by employing minimum quantity lubrication, dry and cryogenic machining; reducing energy consumption; waste reduction by reusing, remanufacturing and recycling; sustainability assessment i.e., energy model, life cycle cost and life cycle social benefit. This paper assists designers and manufacturers to improve sustainability of machine tools by specific optimization measures in their activities.

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“…It was found that heat evacuation is proportional to the coefficient of heat transfer and the difference between the cryogenic media temperature and the contact surface temperature [3][4][5][6]. In addition, cooling capability was also estimated with temperature measurements during or after the machining process [7][8][9][10]. However, in observing the results, huge variations with contradictory trends can be observed.…”

Section: Introductionmentioning

confidence: 99%