Authors
Abstract
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.
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