Applicability of CaF2 Solid Lubricant-Assisted Minimum Quantity Lubrication in Turning for Sustainable Manufacturing

2019 ◽  
pp. 229-238
Author(s):  
Mayur A. Makhesana ◽  
K. M. Patel ◽  
Anand S. Patel
Keyword(s):  
Solid Lubricant ◽  
Sustainable Manufacturing ◽  
Minimum Quantity Lubrication ◽  
Minimum Quantity

Minimum Quantity Lubrication for Sustainable Manufacturing

2021 ◽  
pp. 269-292
Author(s):  
Rahul Anand ◽  
Ankush Raina ◽  
Mir Irfan Ul Haq ◽  
Mohd Fadzli ◽  
Bin Abdollah
Keyword(s):  
Sustainable Manufacturing ◽  
Minimum Quantity Lubrication ◽  
Minimum Quantity

scholarly journals Measurement and Analysis of Surface Roughness in WS2 Solid Lubricant Assisted Minimum Quantity Lubrication (MQL) Turning of Inconel 718

Procedia CIRP ◽  
2016 ◽  
Vol 40 ◽  
pp. 138-143 ◽  
Author(s):  
Uma Maheshwera Reddy Paturi ◽  
Yesu Ratnam Maddu ◽  
Ramalinga Reddy Maruri ◽  
Suresh Kumar Reddy Narala
Keyword(s):  
Surface Roughness ◽  
Inconel 718 ◽  
Solid Lubricant ◽  
Minimum Quantity Lubrication ◽  
Minimum Quantity ◽  
Measurement And Analysis

Experimental Results on Lamellar-Type Solid Lubricants in Enhancing Minimum Quantity Lubrication Machining

2016 ◽  
Vol 138 (10) ◽  
Author(s):  
Trung Kien Nguyen ◽  
Kyung-Hee Park ◽  
Patrick Y. Kwon
Keyword(s):  
Vegetable Oil ◽  
Solid Lubricant ◽  
Minimum Quantity Lubrication ◽  
Solid Lubricants ◽  
Machining Process ◽  
Minimum Quantity ◽  
Aspect Ratios ◽  
Significant Difference ◽  
1045 Steel ◽  
Lamellar Type

This paper studies the effect of various lamellar-type solid lubricants (graphite and hBN) that can be mixed into a lubricant to potentially improve the machinability of minimum quantity lubrication (MQL) machining. To examine this, the solid lubricants are classified into particles and platelets based on their aspect ratios as well as their respective sizes. In particular, the particles are classified into microparticles and nanoparticles based on their dimensions (average radius), while the platelets were classified, based on their average thickness, into two types: the “microplatelets” if the thickness is typically up to few tens of microns and the “nanoplatelets” if the thickness is well below a tenth of a micron (even down to few nanometers). Our previous work has shown that the mixture of an extremely small amount (about 0.1 wt. %) of the graphitic nanoplatelets and vegetable oil immensely enhanced the machinability of MQL machining. In this paper, many lubricants, each mixed with a particular variety of nano- or micro-platelets or one type of nanoparticles, were studied to reveal the effect of each solid lubricant on MQL machining. Prior to the MQL machining experiment, the tribological test was conducted to show that the nanoplatelets are overall more effective than the microplatelets and nanoparticles in minimizing wear despite of no significant difference in friction compared to pure vegetable oil. Consequently, the MQL ball-milling experiment was conducted with AISI 1045 steel yielding a similar trend. Surprisingly, the oil mixtures with the microplatelets increased flank wear, even compared to the pure oil lubricant when the tools with the smooth surface were used. Thus, the nanoscale thickness of these platelets is a critical requirement for the solid lubricants in enhancing the MQL machining process. However, maintaining the nanoscale thickness is not critical with the tools with the rough surfaces in enhancing the MQL process. Therefore, it is concluded that finding an optimum solid lubricant depends on not only the characteristics (material as well as morphology) of solid lubricants but also the characteristic of tool surface.

scholarly journals Performance Assessment and Chip Morphology Evaluation of Austenitic Stainless Steel under Sustainable Machining Conditions

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1931
Author(s):  
Anshuman Das ◽  
Smita Padhan ◽  
Sudhansu Ranjan Das ◽  
Mohammad S. Alsoufi ◽  
Ahmed Mohamed Mahmoud Ibrahim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Performance Assessment ◽  
Sustainable Manufacturing ◽  
Minimum Quantity Lubrication ◽  
Chip Morphology ◽  
Compressed Air ◽  
Ceramic Tool ◽  
Sustainable Machining ◽  
Minimum Quantity

Sustainable manufacturing has received great attention in the last few decades for obtaining high quality products with minimal costs and minimal negative impacts on environment. Sustainable machining is one of the main sustainable manufacturing branches, which is concerned with improving environmental conditions, reducing power consumption, and minimizing machining costs. In the current study, the performance of three sustainable machining techniques, namely dry, compressed air cooling, and minimum quantity lubrication, is compared with conventional flood machining during the turning of austenitic stainless steel (Nitronic 60). This alloy is widely used in aerospace engine components, medical applications, gas power industries, and nuclear power systems due to its superior mechanical and thermal properties. Machining was performed using SiAlON ceramic tool with four different cutting speeds, feeds and a constant depth of cut. Consequently, various chip characteristics such as chip morphology, chip thickness, saw tooth distance and chip segmentation frequency were analyzed with both optical and scanning electron microscopes. Performance assessment was performed under the investigated cutting conditions. Our results show that the tool life under MQL machining are 138%, 72%, and 11% greater than dry, compressed air, and flooded conditions, respectively. The use of SiAlON ceramic tool results is more economically viable under the MQL environment as the overall machining cost per component is lower ($0.27) as compared to dry ($0.36), compressed air ($0.31), and flooded ($0.29) machining conditions. The minimum quantity lubrication technique outperformed the other investigated techniques in terms of eco-friendly aspects, economic feasibility, and technical viability to improve sustainability.

Effect of hBN Solid Lubricant Concentration on Machinability of Titanium (Ti-6Al-4V) Alloy

2015 ◽  
Vol 830-831 ◽  
pp. 87-90 ◽  
Author(s):  
S. Santosh ◽  
K. Rajkumar ◽  
A. Gnanavelbabu
Keyword(s):  
Solid Lubricant ◽  
Hexagonal Boron Nitride ◽  
Sustainable Manufacturing ◽  
Minimum Quantity Lubrication ◽  
Solid Lubricants ◽  
Aerospace Applications ◽  
Dry Conditions ◽  
Cutting Zone ◽  
Cutting Zone Temperature ◽  
Zone Temperature

The prime rationale for designers to choose titanium in their designs for aerospace applications is its relative low weight for a given strength level and its relative resistance to high temperature. Excellent biocompatibility makes titanium as ideal material for many biomedical applications. Even though the titanium products are either sintered or cast into required shape, there is a need for machining in order to produce intricate shapes. However machining of titanium alloys poses many serious problems owing to the reactivity of titanium at high cutting temperatures and rapid tool wear. An alternative method to overcome this is by reducing the cutting zone temperature. This can be achieved by the addition of solid lubricants to regular cutting liquids and using it as minimum quantity lubrication (MQL) strategy. In this study, hexagonal boron nitride (hBN) powder with different concentrations (5, 10, 15 wt %) was mixed with water and used as a lubricant. Turning experiments were performed with TiAlN coated Tungsten carbide insert for a constant speed and variable feed rates. For comparison purpose, machining was carried out under dry conditions. Results indicate that the cutting zone temperature reduced drastically on addition of solid lubricant hBN with water. MQL conditions showed that cutting zone temperature decreased by several folds when compared to dry machining. However there was no significant decrease in temperature between 10 and 15 wt% hBN additions which indicates that 10% hBN addition proves to be optimal. This type of machining thereby paves way for sustainable manufacturing.

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