Identifikasi Nilai Kekasaran Permukaan pada Pemesinan Paduan Magnesium
Abstract: The using of
magnesium alloy, as alternative to iron and steel, is becoming more popular in
the manufacturing industries. Magnesium and its alloys were classified as
lighter material and also available in a quite large quantity in this world.
Some of machined componens, included automotive and aerospace componens were
produced by cutting, which is known as machining process. The machining process
done in several conditions doe to the pharamater or factor in machining
process. The main factors in machining process are feed rate, cutting speed, machining condition
and deep of cutting. The purpose of this research is to investigate the
influence of cutting pharameter to the surface roughness of magnesium, when machined
using milling process and supplied with cooling air from vortex tube cooler.
Cutting pharameters used in this
research are feed rate and cutting speed. Feed rate used was three levels,
those are 0,15 mm/rev, 0,20 mm/rev, and 0,25 mm/rev. Cutting speed used also
three levels, those are 23,18 m/min, 32,15 m/min and 42,7 m/min. Cooling air is
released from vortex tube cooler with 15 oC of temperature. The result of this
research is found that feed rate affected signicantly on surface roughness
value. The surface roughness value increased with increasing of the feed rate
level. An other han, the surface roughness
value is also affected wear on the edge of the cutting tool. The wear on
the cutting tool contributed to the changes of
nose radius (become bigger), so increase the surface roughness value.
Penulis: Gusri Akhyar Ibrahim
Kode Jurnal: jptmesindd140469
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