Application of the auxiliary wheel cleaning jet in the plunge cylindrical grinding with Minimum Quantity Lubrication technique under various flow rates

2018 ◽  
Vol 233 (4) ◽  
pp. 1144-1156 ◽  
Author(s):  
Eduardo C Bianchi ◽  
Rafael L Rodriguez ◽  
Rodolfo A Hildebrandt ◽  
José C Lopes ◽  
Hamilton J de Mello ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Substantial Reduction ◽  
Minimum Quantity Lubrication ◽  
Economic Benefits ◽  
Grinding Wheel ◽  
Machining Processes ◽  
Potential Health ◽  
Abrasive Wheel ◽  
Flow Rates ◽  
Minimum Quantity

Minimum Quantity Lubrication is an alternative technique to conventional techniques that are related to environmental sustainability and economic benefits. This technique promotes the substantial reduction of the amount of coolant employed in machining processes, representing a mitigation of risks to people’s health that are involved with the process. On the other hand, it has been reported in the literature that some problems of using the Minimum Quantity Lubrication technique can impair the grinding efficiency. One of these problems is associated with wheel clogging phenomenon, which is caused by inefficient chip removal from the cutting zone as well as from mixture of metal dust and oil accumulated on the wheel surface during grinding. If chips lodge inside the pores of the grinding wheel as machining progresses, they will adversely affect dimensional and geometric quality of final product. Also, this will require more frequent dressing. A solution for this problem can be an effective cleaning system of the abrasive wheel during grinding with the traditional Minimum Quantity Lubrication technique Assisted with Wheel Cleaning Jet. In this context and aiming to explore the various potential health, environmental and economic benefits that have been widely reported in the literature about the use of Minimum Quantity Lubrication technique in grinding, this study presents an application of the Minimum Quantity Lubrication technique at flow rates (30, 60 and 120 mL/h) and assisted with wheel cleaning jet (Minimum Quantity Lubrication + Assisted with Wheel Cleaning Jet) in plunge grinding of a hardened steel with an aluminum oxide wheel. Experiments were also carried out with traditional Minimum Quantity Lubrication (without wheel cleaning) and with the conventional coolant techniques for comparison. The output variables were geometrical errors (surface roughness and roundness) of the workpiece, diametric wheel wear, acoustic emission, vibration and tangential cutting force. Results showed that Minimum Quantity Lubrication + Assisted with Wheel Cleaning Jet (with wheel cleaning jet) not only outperformed the traditional Minimum Quantity Lubrication technique in all the parameters analyzed, but in some cases it proved to be compatible with the conventional coolant technique under the conditions investigated. Also, most of values of the output parameters tested decreased with increase in flow rate.

Experimental Investigation on Turning of Monel K500 Alloy Using Nano Graphene Cutting Fluid Under Minimum Quantity Lubrication

2019 ◽  
Author(s):  
Arul Kulandaivel ◽  
Senthil Kumar Santhanam
Keyword(s):  
Cutting Speed ◽  
Minimum Quantity Lubrication ◽  
High Strength ◽  
High Heat ◽  
Water Soluble ◽  
Cutting Fluid ◽  
Depth Of Cut ◽  
Machining Processes ◽  
Turning Operation ◽  
Minimum Quantity

Abstract Turning operation is one of the most commonly used machining processes. However, turning of high strength materials involves high heat generation which, in turn, results in undesirable characteristics such as increased tool wear, irregular chip formation, minor variations in physical properties etc. In order to overcome these, synthetic coolants are used and supplied in excess quantities (flood type). The handling and disposal of excess coolants are tedious and relatively expensive. In this proposed work, Water Soluble Cutting Oil suspended with nanoparticles (Graphene) is used in comparatively less quantities using Minimum quantity lubrication (MQL) method to improve the quality of machining. The testing was done on Turning operation of Monel K500 considering the various parameters such as the cutting speed, feed and depth of cut for obtaining a surface roughness of 0.462μm and cutting tool temperature of 55°C for MQL-GO (Graphene oxide) process.

Effects of grinding-wheel cleaning system in application of minimum quantity lubrication technique

2020 ◽  
Vol 58 ◽  
pp. 116-128
Author(s):  
Rodrigo de Souza Ruzzi ◽  
Ricardo Bega de Andrade ◽  
Rosemar Batista da Silva ◽  
Raphael Lima de Paiva ◽  
Alexandre Mendes Abrão ◽  
...  
Keyword(s):  
Minimum Quantity Lubrication ◽  
Grinding Wheel ◽  
Minimum Quantity ◽  
Cleaning System

scholarly journals Development of a Low Cost Eco-Friendly Minimum Quantity Lubrication System for Machining Processes

2021 ◽  
Vol 8 ◽  
pp. 37-47
Author(s):  
Arunachalam Ramanathan ◽  
Sumaya Al Rumhi ◽  
Noor Al Hamimi ◽  
Shurooq Al Ajmi
Keyword(s):  
Quality Function Deployment ◽  
Cooling System ◽  
Low Cost ◽  
Minimum Quantity Lubrication ◽  
Lower Surface ◽  
Machining Processes ◽  
Decision Matrix ◽  
Minimum Quantity ◽  
Lathe Machine ◽  
Mql System

Recently all environmental worries are calling for reducing the usage of fluids in machining operations. One of the promising solutions that appeared lately is minimum quantity lubrication (MQL). This research aimed to develop an eco-friendly cooling system for a lathe machine and assess its performance. After considering the customer needs, the needs were translated into engineering specifications in the conceptual design phase, and then the quality function deployment was developed. Three concepts were generated and evaluated considering the selection criteria, and a final concept was selected using the decision matrix method. Following this, a detailed design and fabrication of the subsystems such as the oil tank and a structure accommodate all the components. The developed system was tested on six different workpiece samples to compare the MQL system with the conventional one. In general, the MQL system resulted in lower surface roughness values as well as lower tool wear.

scholarly journals Minimum Quantity Lubrication (MQL) and its Effect on Tool Wear During Miniature Drilling :an Experimental Study

2016 ◽  
Vol 1 (2) ◽  
pp. 65-70
Author(s):  
Norsalawani Binti Mohamad ◽  
Rubina Bahar
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
High Speed Steel ◽  
Minimum Quantity Lubrication ◽  
Limiting Factors ◽  
Work Piece ◽  
Machining Processes ◽  
Minimum Quantity ◽  
Tool Condition ◽  
Overall Performance

Miniature drilling is widely used in industries including electronics and reconstructive surgeries to create small sized holes. Chip removal and effective supply of coolant are the two limiting factors that make the process more complex compared to other meso scale machining processes and also contribute to the tool wear. The tool wear in the process is mainly caused by the interaction, motion and chip production between the tool and work piece. Uniform supply of coolant must be ensured to reach the drilled cavity to keep the tool wear to a minimal level. This study includes experimental investigation of the tool condition after applying Minimum Quantity Lubrication (MQL) system as a greener approach as the name indicates. The tool condition with MQL has also been compared with dry and flood cooling. Two different types of drill bit materials (High Speed Steel and Carbide) have been tested under same experimental condition to drill through Aluminum Alloy 6061 and it has been found that overall performance in terms of tool condition after applying MQL was better compared to the other two methods. The overall wear propagation area was measured for both the conditions. It was seen, the wear propagation covered minimal area with MQL while for flood and dry condition wear was spread over a bigger area on flank. 

scholarly journals Experimental Investigation on Effects of MQL on Surface Finish and Tool Wear in Turning of SAE 1018

2018 ◽  
Vol 7 (2) ◽  
pp. 67-69
Author(s):  
Sandeep Kumar ◽  
Sukhpal Singh Chatha ◽  
Rutash Mittal
Keyword(s):  
Tool Wear ◽  
Surface Finish ◽  
Metal Cutting ◽  
Substantial Reduction ◽  
Minimum Quantity Lubrication ◽  
Environmental Safety ◽  
Work Piece ◽  
Cutting Fluids ◽  
Nose Radius ◽  
Machining Processes

In all machining processes, tool wear is a major problem and it leads to tool failure. In metal industries, the use of cutting fluids affects both employee’s health and environmental pollution. But the use of cutting fluids becomes necessary to keep tight tolerances and to maintain the work-piece surface properties without damages. Researchers are trying to reduce the use of coolant lubricant fluids in metal cutting to obtain environmental safety. So, to minimize the use of cutting fluids new cutting techniques are investigated. Minimal quantity of Lubrication (MQL) is a recent technique introduced in machining to obtain less tool wear and environment safety. The minimum quantity lubrication was provided with a spray of mixture of air and vegetable oil at suitable pressure. MQL machining was performed much superior compared to dry and wet machining due to substantial reduction in tool wear and cutting zone temperature and a better surface finish. MQL provides neat and clean environment avoiding health hazards due to smoke, fumes and gases etc. In this study work-piece of SAE 1018 were prepared to investigate their Surface finish under turning with coated tool bits. Wear of nose radius of tool bits were analyzed by SEM which results in less wear in MQL process as compared to flood cooling.

Minimum Quantity Lubrication (MQL) Machining for Complex Powertrain Components

2006 ◽  
Author(s):  
Richard Furness ◽  
Alexander Stoll ◽  
George Nordstrom ◽  
Gary Martini ◽  
Jon Johnson ◽  
...  
Keyword(s):  
Waste Water ◽  
Minimum Quantity Lubrication ◽  
Water Volume ◽  
Machining Processes ◽  
Capital Equipment ◽  
Minimum Quantity ◽  
Biological Contamination ◽  
Oil Mist

Near Dry or Minimum Quantity Lubrication (MQL) Machining eliminates conventional flood coolant from the machining processes. In doing so, MQL reduces oil mist generation, biological contamination of coolant, waste water volume, costs for capital equipment and regulatory permitting. MQL also improves recyclables and transportation of coolant contaminated chips.

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