Pengaruh Parameter Proses Freis Terhadap Kekasaran Permukaan Baja Karbon Fasa Ganda
Abstract: Dual phase
is a new
structure at low
or medium carbon
steel. The structure is obtained from the heating of low or medium
carbon steel in the region α + γ (temperatures between A1-A3), then follow by
holding process within a certain time and cooled quickly (quench) in water, brine or
oil. The result
has a microstructure of
martensite and ferrite
as well as a
few other structures. The steel usually has high
tensile strength, good elongation
and there is no discontinuity yield.
The problem is how the
influence of parameters milling
process on surface roughness the dual
phase carbon steel The purpose of
this study was
to determine the outcome
Freis CNC cutting
conditions due to
the formation process
of double and
tempering phase that begins
with the process
of forging (forging)
on carbon steel .This study
used AISI 1045 steel Ø16mm x 150mm diameter, which was forged at a
temperature of 950oC-900oC to form
a rectangular cross
section with a size
of 10mm x
16mm x 180mm.
Dual-phase heating was continued
at a temperature of 770ºC, arrested at 90 'and cooled rapidly in oil , followed
by a tempering process 600⁰C/30 '. The process of cutting was done by cutting
finishing with feeding 0.12; 0.14; 0.16 mm / put and depth of cut 0.4; 0.6; 0.8
mm while roughing cuts by feeding 0.2; 0.4;
0.6 mm / put
and depth of
cut 1.2, 1.4;a1.6amm .The result Depth
of cut can affect the deflection. The
deflection could be
increased by increasing
the depth of
cut. The results obtained
increase the level of surface roughness. On the depth of cut 0.4 mm with
feeding 0:16 mm / put
the value obtained
average roughness Ra
0.64 μm, including
group N6 roughness when compared with 0.8 mm depth of cut with the same feeding
value of average roughness Ra 1.08
μm including N7.Surface
roughness increased by feeding
could affect the feeding
of 0.12 mm / put and 0.16 mm / put, 0.2 mm / put and 0.6 mm /put because
the distance from the cutting peak roughness
increases, so the
roughness of the
rough and the
process of finishing cuts on
carbon steel dual
phase is more
subtle than on the
untreated carbon steel
with the same cutting parameters.
Penulis: Nur Mohammad Arifin,
Achmad As’ad Sonief, Winarno Yahdi Atmodjo
Kode Jurnal: jptmesindd110271
