Studying the effect of the percentage of cutting fluid and cutting speed on surface roughness

الملخص EN

The purposes of cutting fluids (MWF) which are used in the mechanical machining operation are important to make cutting easy, and increase the rate of productivity.

It is now very important subject because the direct effect to produce best surface roughness and negative effect on work environment and worker.

This paper studies the effect of using cutting fluids on the surface roughness of the product.

The Iraqi soluble cutting type was used, in the experimental work, special study to do a number of experiments to choose the best metal cutting parameter such as (cutting speed, condition depth of cut paper, and feed rate) ,also its effects on the surface roughness.

In this paper was used (low alloy steel) and cutting tool of (Tungsten Carbide) were used which have a high hardness.

Different cutting speeds were used with constant cutting depth and feed rates.

was used three different mixtures in different percentages of the fluid with water and by two methods of using cutting fluid, the first method is flooding method and the second is misting method with average of (480 mL/hrs) for three mixtures from the fluid.

From the results appear the best operation case to gain best surface roughness for product is by use flooding method with ratio (1:20) (oil: water) with linear cutting speed (94.2m/min).

Which gives surface roughness of (0.01 m m).

Will have noted the direct effect of the cutting fluid and the water drop on the fluid on the surface roughness.