Correct option is D
When
soluble oil (a type of cutting fluid) is mixed with water, it forms a
milky white emulsion. The oil droplets are dispersed in the water, creating a cloudy, white appearance. This mixture is widely used as a
coolant and lubricant in machining operations like turning, milling, and grinding.
The white color is due to the light scattering caused by the dispersed oil droplets within the water.
Soluble oil is a water-miscible cutting fluid made by blending mineral oil with emulsifiers, additives, and sometimes corrosion inhibitors.
When mixed with water, it creates a stable emulsion that provides lubrication, cooling, and rust prevention during machining operations.
Functions in Machining:
·
Cooling: Dissipates heat generated during cutting.
·
Lubrication: Reduces friction between the tool and workpiece.
·
Corrosion Resistance: Protects the workpiece and machine components from rust.
