Study on the Effects of Abrasive and Coolant-Lubricant Types on Minimum Quantity Lubrication-MQL Grinding

2011 ◽  
Vol 325 ◽  
pp. 231-237 ◽  
Author(s):  
Taghi Tawakoli ◽  
M.J. Hadad ◽  
A. Daneshi ◽  
M.H. Sadeghi ◽  
B. Sadeghi
Keyword(s):  
Surface Quality ◽  
Minimum Quantity Lubrication ◽  
Dry Machining ◽  
Grinding Forces ◽  
Minimum Quantity ◽  
Mql Grinding ◽  
Air Jet ◽  
Dry Grinding ◽  
Surface Damages ◽  
Minimum Quantity Lubricant

In dry grinding, as there is no coolant lubricant to transfer the heat from the contact zone, generation of surface damages are not preventable. Promising alternatives to conventional flood coolant applications are also Minimum Quantity Lubricant (MQL) or Near Dry Machining (NDM) or Semi Dry Machining (SDM). This research has been conducted to study the influence of the abrasive and coolant-lubricant types on the minimum quantity lubrication (MQL) grinding performance. One type of CBN and three types of conventional wheels (corundum) were tested. The tests were carried out in presence of fluid, air jet and eleven types of coolant-lubricants, as well as in dry condition. The results indicate that the finest surface quality and the lowest grinding forces could be obtained when grinding with CBN wheels. In the case of conventional wheels, the coarser wheel induces much proper grinding results.

Experimental Study on the Applicability of Minimum Quantity Lubricant Grinding

2010 ◽  
Vol 139-141 ◽  
pp. 1378-1383 ◽  
Author(s):  
Guang Yao Meng ◽  
Ji Wen Tan ◽  
Yi Cui
Keyword(s):  
High Speed ◽  
Green Manufacturing ◽  
Gas Barrier ◽  
Minimum Quantity ◽  
Mql Grinding ◽  
Grinding Method ◽  
Grinding Fluid ◽  
Dry Grinding ◽  
Fluid Supply ◽  
Minimum Quantity Lubricant

Grinding is often to use the grinding fluid because of the high temperature in the grinding area. During the process of grinding, which is used traditional way of grinding fluid supply, gas barrier layer which around high-speed rotary wheel impeded effective grinding fluid into grinding zone, so it creates huge waste and pollution. Minimum quantity lubricant (MQL) grinding as a way of Green Manufacturing is proposed in recent years. So far, the problem of MQL can be applied in grinding has not been confirmed. In this paper, the applicability of MQL in grinding is studied by comparing the experiment of traditional grinding fluid supply method, minimum quantity lubricant grinding method and dry grinding method, and this study is based on theoretical analysis of minimum quantity lubricant grinding.

Some investigations in grindability improvement of Inconel 718 under ecological grinding

2018 ◽  
Vol 233 (3) ◽  
pp. 727-744 ◽  
Author(s):  
Manoj Kumar Sinha ◽  
Rajeshkumar Madarkar ◽  
Sudarsan Ghosh ◽  
Venkateswara Rao Paruchuri
Keyword(s):  
Surface Integrity ◽  
Inconel 718 ◽  
Ground Surface ◽  
Minimum Quantity Lubrication ◽  
Energy Dispersive ◽  
Grinding Forces ◽  
X Ray ◽  
Minimum Quantity ◽  
Grinding Performance ◽  
Dry Grinding

This work explores the improvement in grinding characteristics of Inconel 718 (IN718) using soluble oil under minimum quantity lubrication and liquid nitrogen (LN2) environments. The coolant flow rate in minimum quantity lubrication and LN2 grinding has been regulated through indigenously developed setups. Grinding performance has been studied in terms of on-machine measured grinding forces and centre line average surface roughness ( Ra). The obtained grinding characteristics have been compared with the outcomes under dry and wet grinding. Surface integrity of ground surface, wheel morphology, and chip formation characteristics has been studied using scanning electron microscope, energy dispersive X-ray spectroscopy, and atomic force microscopy. Analysis of variance has been carried out to capture the variability in the experimental data for tangential forces and Ra. The main effect of the factors and their first-order interactions have been considered, and second-order regression equations have been developed using response surface methodology. LN2 grinding has been proved to be more efficient as it yielded lowest grinding forces, least oxidation, minimal ground surface damage and better surface integrity. The occurrence of almost circular chips in dry grinding indicates severe oxidation, whereas small C-type chips formed under minimum quantity lubrication and LN2 conditions indicate effective cooling under these environments. The energy dispersive X-ray spectroscopy analysis of the ground surfaces also supports these results through the occurrence of the highest oxidation in dry grinding. From this work, it has been concluded that LN2 and minimum quantity lubrication grinding offer a clean and effective means to improve grinding performance of IN718 compared to dry and wet grinding.

Investigation of Grinding Ti-6Al-4V under Minimum Quantity Lubrication (MQL) Condition

2011 ◽  
Vol 487 ◽  
pp. 84-88 ◽  
Author(s):  
Z.Q. Liu ◽  
Guo Giang Guo ◽  
Xiao Hu Zheng ◽  
Qing Long An ◽  
Ming Chen
Keyword(s):  
Surface Roughness ◽  
Flow Field ◽  
Surface Quality ◽  
Minimum Quantity Lubrication ◽  
Grinding Force ◽  
Minimum Quantity ◽  
Dry Grinding ◽  
Force Ratio ◽  
Mist Flow ◽  
Physical Changes

This paper investigates the surface grinding of Ti-6Al-4V under minimum quantity lubrication (MQL) condition. The experiment result indicated that grinding force ratio and specific energy have close related to grinding parameters. Due to the flow field of MQL mist has easy been affected by feed rate, the interaction between of MQL mist flow field and feed rates of worktable has great effect on surface roughness and surface quality. Additionally, comparing to dry grinding, MQL could help to improve surface quality by restrain chemical reactions and physical changes.

Application of Nanofluids in Minimum Quantity Lubrication Grinding

2007 ◽  
Author(s):  
Bin Shen ◽  
Albert Shih ◽  
Simon Tung
Keyword(s):  
Pure Water ◽  
Minimum Quantity Lubrication ◽  
Grinding Wheel ◽  
High Concentration ◽  
Wheel Wear ◽  
Minimum Quantity ◽  
Mql Grinding ◽  
Dry Grinding ◽  
Slurry Layer ◽  
G Ratio

This research project investigated the wheel wear and tribological characteristics in wet, dry and minimum quantity lubrication (MQL) grinding of cast iron. Water-based Al2O3 and diamond nanofluids were applied in MQL grinding process and the results were compared with those of pure water. During the MQL grinding using nanofluids, a dense and hard slurry layer was formed on the wheel surface and could benefit the grinding performance. Experimental results showed that G-ratio, volume of wear of the grinding wheel vs. the volume of material removed, could be improved with high concentration nanofluids. Nanofluids showed the benefits to reduce grinding forces, improve surface roughness, and avoid workpiece burning. Compared to dry grinding, MQL grinding could significantly reduce the grinding temperature.

Investigation on Surface Grinding of Ti-6Al-4V Using Minimum Quantity Lubrication

2012 ◽  
Vol 500 ◽  
pp. 308-313 ◽  
Author(s):  
Guo Qiang Guo ◽  
Zhi Qiang Liu ◽  
Xiao Hu Zheng ◽  
Ming Chen
Keyword(s):  
Surface Roughness ◽  
Plastic Deformation ◽  
Surface Morphology ◽  
Specific Energy ◽  
Minimum Quantity Lubrication ◽  
Grinding Force ◽  
Dry Grinding ◽  
Surface Damages ◽  
Side Flow ◽  
Mql System

This paper investigates the effects of MQL system on the grinding performance of Ti-6Al-4V using SiC abrasive, the evaluation of the performance consisted of analyzing the grinding force, surface roughness and surface morphology. The experiment result indicated that the favorable lubricating effect of MQL oil makes it has the lowest value of grinding force, specific energy and force raito. MQL has better surface finish than dry grinding and fluid grinding has the lowest value of surface roughness under different grinding depth. Surface damages such as: side flow, plastic deformation, redeposition are present in dry and fluid grinding. As grinding depth increased, the damages become much more severe. But in MQL condition, it gives better surface integrity than dry and fluid grinding.

Ionic Liquid As Cutting Fluid Additive Using Minimum Quantity Lubricant (MQL) in Titanium-Ceramic Contact

2019 ◽  
Author(s):  
Sameer A. Magar ◽  
Hong Guo ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquid ◽  
Normal Load ◽  
Minimum Quantity Lubrication ◽  
Cutting Fluid ◽  
Protic Ionic Liquid ◽  
Shipbuilding Industry ◽  
Minimum Quantity ◽  
Wide Range ◽  
Minimum Quantity Lubricant ◽  
High Thermal Resistance

Abstract Titanium alloys have a wide range of application in the field of automotive, biomedical and the civil industry due to its excellent material properties such as high thermal resistance, high load bearing capacity and high corrosion resistance. However, the high cost of machining titanium limits its application in aerospace and shipbuilding industry. Minimum quantity lubrication (MQL) has emerged as a new lubrication technique to achieve sustainable and profitable machining, but multiple studies show that conventional cutting fluid in MQL is not sufficient to reduce the friction and the associated effects. Recently, ionic liquids have shown a great potential in reducing the friction and wear of materials in contact. This study focuses on using an environment-friendly protic ionic liquid (PIL) tri-[bis (2-hydroxyethylammonium)] citrate (DCi) as an additive to a biodegradable oil (BO) used as lubricant in a ball-on-flat reciprocating tribometer in the titanium-ceramic contact at three different frequencies (3Hz, 4Hz and 5 Hz) under different loads. Results show a maximum 50% reduction in friction coefficient and 23% wear reduction at a frequency of 5 Hz under a normal load of 2 N by using 1 wt% DCi as an additive to BO as compared to using neat BO as the lubricant.

scholarly journals Perbedaan Distribusi Kekerasan Metode Minimum Quantity Lubrication (MQL) dan Metode Wet Machining Pada Material Al-Zn

2020 ◽  
Vol 5 (1) ◽  
pp. 42-50
Author(s):  
Wildan Shofiyandi ◽  
Heri Yudiono
Keyword(s):  
Quantitative Research ◽  
Minimum Quantity Lubrication ◽  
Experimental Methods ◽  
Descriptive Statistics ◽  
Observation Data ◽  
Dry Machining ◽  
Delivery Methods ◽  
Minimum Quantity ◽  
Analysis Techniques ◽  
Coolant Delivery

This study aims to determine the influence of three different coolant delivery methods, namely dry machining, Minimum Quantity Lubrication (MQL), and wet machining. This is quantitative research with the use of experimental methods. Data were collected through observation. Data analysis techniques being used was descriptive statistics. In MQL methods, the use of coolant is minimized by mixing it with high-pressurized air. It is shown from the obtained data that the use of MQL methods is not as good as the wet machining. The hardness distribution of wet machining method is lower than the MQL. This was observed from the machining chips of the two methods. The chips from the MQL method were darker than the wet machining method. This finding showed that the heat generated from the MQL was higher than that of wet machining. The Al and Zn bonds in the MQL method is considered to be denser.Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh penggunaan metode pemberian coolant yang berbeda, 3 metode yang digunakan adalah metode dry machining, Minimum Quantity Lubrication (MQL), dan wet machining.  Penelitian ini termasuk jenis penelitian kuantitatif dan menggunakan metode eksperimen. Untuk teknik pengumpulan data menggunakan metode observasi dan teknik analisis data menggunakan teknik analisis statistik deskriptif. Metode MQL merupakan metode yang digunakan untuk meminimalisir penggunaan coolant dengan mencampurkannya dengan udara bertekanan tinggi. Data yang didapat menunjukkan bahwa penggunaan metode MQL belum sebaik penggunaan metode wet machining. Distribusi kekerasan metode wet machining lebih rendah daripada MQL. Hal tersebut dapat terlihat dari geram yang dihasilkan oleh kedua penggunaan metode tersebut, geram yang dihasilkan dari metode MQL lebih gelap daripada metode wet machining. Hal tersebut menunjukkan bahwa, panas yang dihasilkan dari metode MQL lebih tinggi daripada panas yang dihasilkan dari metode wet machining panas tersebut mempengaruhi ikatan Al dan Zn pada metode MQL menjadi lebih rapat.

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