ANALISA PENGARUH LUAS PENAMPANG POTONG TERHADAP KEKASARAN PERMUKAAN HASIL PEMBUBUTAN MATERIAL BAJA KARBON TINGGI

Abstract

This research is an experimental study that aims to determine the effect of cross-sectional area of ??cut (A) on the surface roughness of the workpiece and determine the correlation of cross-sectional area of ??cut with surface roughness. The method of data collection is done by the method of literature study and field study. The object used as the sample is ST 60 carbon steel with a diameter of 20 m

Based on the results of data analysis, the results of surface roughness (Ra) measurements using a fixed rotation (n) are 540 rpm and a constant feed motion (f) of 0.03 mm where the depth of cut (a) varies from 0.2 mm, 0.25 mm and 0.3 mm, the values ??of magnitude obtained are 4.09 µm, 5.18 µm and 5.46 µm respectively and the correlation value obtained is 0.74%

While the results of the measurement of surface roughness (Ra) by using a fixed rotation (n) is 540 rpm and a constant feed motion (f) is 0.03 mm where the depth of cutting (a) varies from 0.2 mm, 0.25 mm and 0.3 mm, then the value of magnitude is obtained respectively are 4.32 ?m, 4.37 ?m and 5.58 ?m and the correlation value obtained is 0.88%