What are the disadvantages of using cutting fluid?
The main cutting fluid roles are cooling, reducing friction, removing metal particles, and protecting the workpiece, the tool and the machine tool from corrosion [4]. However, the use of cutting fluids has also associated some disadvantages such as their cost, environmental impact and health hazards to workers (Fig.
Which liquid increases life of cutting tool?
The application of water jet reduces the cutting tool surface temperature and as a result tool life increases due to cooling effect of water jet [15]. High Energy Fluid Jet Machining can be used for micro-machining by reducing the jet diameter which is less than 100 μm.
What effect does cutting fluid have on cutting force?
High temperature in cutting zone has been traditionally tried to control by using cutting fluids. The coolant effect reduces temperature in cutting zone and the lubrication action decreases cutting forces. Thus the friction coefficient between tool and chip becomes lower in comparison to dry machining [5] and [6].
What is tool life?
Tool life definition: Tool life is the duration of actual cutting time after which the tool is no longer usable. There are many ways of defining the tool life, and the common way of quantifying the end of a tool life is by a limit on the maximum acceptable flank wear.
Which of the following are the causes of concern while using cutting fluids?
The main cause of these concerns about cutting fluids lies in their chemical composition. Components such as anti-corrosives, anti-foaming agents and biocides are sometimes added, the last-named being one of the most hazardous additives to machine operators (Hong and Broomer, 2000).
How can I improve my cutting tool life?
11 Tips to Increase Tool Life and Reduce Tool Wear
- Use the Right Feeds and Speeds.
- Keep Deflection Under Control.
- Avoid Recutting Chips.
- Lubricate Sticky Materials.
- Add a Surface Speed Safety Factor.
- Dial Back the Tortoise-Hare Slider.
- Use a Gentler Cut Entry in Your CAM Program.
- Be Gentle Exiting the Cut Too.
What has the least effect on tool life?
DOC has the least effect on tool life, even though a light DOC means more passes will be needed to finish the roughing operation, which could mean greater insert consumption.
What are the benefits of using cutting fluid?
During machining, use of cutting fluids improves machined surface finish and reduces cutting tool wear. In general, cutting fluids also have anti-corrosion properties, which protect machined surfaces from corrosion. Cutting fluids also save power consumption by reducing the machining forces.
How does coolant affect the tool life?
The application of coolant during any machining operation is believed to reduce tool wear since the cutting fluid produces a lubricating as well as a cooling effect. The worn crater also becomes deeper and narrower as a result of the coolant.
What affects tool life?
Stresses placed on the tool during the production process can cause wear that decreases the useful life of a tool. Factors such as cutting speeds, cutting types (continuous vs. intermediate), the feed and depth of the cuts, tool geometry, cutting fluid used and the rigidity of the machine can all shorten a tool’s life.
How is tool life affected?
Tool wear and hence tool life of any tool for any work material is governed mainly by the level of the machining parameters i.e., cutting velocity, (VC), feed, (f) and depth of cut (t). Cutting velocity affects the maximum and depth of cut minimum.
Why are cutting fluids necessary?
Cutting fluids are used to reduce friction, through lubrication, which is a tribological phenomenon characteristic of machining processes, and occurs at the contact between workpiece and tool. Also, cutting works to remove the heat generated from the cutting zone through cooling (Pawlak et al., 2004).