Mist Application of Cutting Fluid (original) (raw)

During turning operation, high temperature is produced. S uch high temperature often leads to several problems like a large heat affected zone, high tool wear, change in hardness and microstructure of the work piece, burning and its consequence and micro cracks. Application of cutting fluids in conventional method reduces the above problems to some extent through cooling and lubricating of the cutting zone. But in this process the cooling rate is low. For this reason mist application technique has become the focus of attention of researchers and technicians in the field of machining as an alternative to traditional flood cooling. The concept of mist application of cutting fluid some time referred to as near dry machining. The minimization of the requirement of cutting fluids leads to economical benefits, and environmental friendly machining. In this work, attempts have been made to develop a mist application device to apply cutting fluid for turning operation of medium carbon steels...

Cutting Fluids and Cutting Fluid Application Techniques in Machining: A Review

2018

In view of the environmental and health hazards associated with the use of conventional cutting fluids together with developing governmental regulations, the cutting fluid type and cutting fluid application techniques are critically important in machining process. The heat generation and temperature at the cutting zone due to the friction at tool-chip interface and tool-workpiece interface are significant parameters which influence tool wear, tool life, surface integrity, chip formation mechanism and hence machining quality. A good understanding of the type of cutting fluid and methods to apply cutting fluid at the cutting zone significantly reduces the heat generation and temperature in machining process improves the tool life and surface integrity. Cutting fluid related costs and health concerns associated with exposure to cutting fluid mist and a growing desire to achieve environmental sustainability in manufacturing lead to re-examine the role of these fluids and quantify their ...

Effects of Different Cutting Fluids on Temperature Reduction on Mild Steel during Machining Operations

ATBU Journal of Science, Technology and Education, 2018

The growing demand for biodegradable materials has opened an avenue for using vegetable oils such as Neem seed oil, castor oil and water melon seed oil as an alternative to conventional cutting fluids. In this study, some aspects of the turning process on mild steel using HSS cutting tool at variety of spindle speed, feed rate and constant length of cut were observed using Neem seed oil, soluble oil and straight oil in comparison. This study therefore, determined the effect of temperature on cutting fluids (Neem oil, soluble oil and straight oil) when used as cutting fluid for teaching machining operations. Two specific objectives guided the study, two corresponding research questions and two null hypotheses were also formulated. The data collected were analyzed using mean and Analysis of Variance (ANOVA). The findings of the study revealed that, Neem oil remains the best among the three oils in terms of temperature reduction. There was significant difference in the mean temperature...

Comparison between Nitrogen- Oil- Mist and Air-Oil- Mist Condition when Turning of Hardened Tool Stainless Steel

Minimum quantity lubrication (MQL) is a technique which sprays a small amount of lubricant to the cutting zone with the aid of compressed air. MQL has become an attractive option to dry and flood cutting in terms of being able to increase tool life and reduce the cost of the product. However, machining under MQLseems to be limited by cutting temperature, this is because at high speeds, the oil mist becomes evaporated. Therefore, in this study the use ofnitrogen gas and air as cooling mediumin combination with oil mist as a lubricant was compared in order to improve the machining performance when turning hardened stainless tool steel (STAVAX ESR) with hardness 48 HRCusingwiper coated carbidecutting inserts. The results show that the use of nitrogen with oil mist prolongs the tool life compared to the use of air and oil mist. Also better product surface Finnish was obtained when using nitrogen gas with oil mist.

A Numerical and Experimental Investigation of the Effects of Cutting Fluid on Machining Performance

2016

Cutting fluids play an important role in improving machining performance. However, cutting fluids have adverse effects on health and environment. A new methodology has been proposed for the prediction of tool temperature and the experimentally validated methodology revealed that turning operations can be performed with reduced amount of cutting fluid. Followed by, experiments were conducted and the results demonstrated that the reduce amount of cutting fluid is sufficient to obtain acceptable machining performance

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