Dampak Perubahan Temperatur Lingkungan Terhadap Temperatur Puncak Las Dan Laju Pendinginan Sambungan Dissimilar Metal Menggunakan Las Mlg
Abstract: The failure
of dissimilar weld
joint happen to
train contructions because
of unweld joint quality optimal.This research used MIG
welding with CO2 gas shield. The welding current used was 110
Ampere with wire diameter
0.8mm, welding velocity
2 mm/s, gas
rate of CO2 was 5L/mnt. Temperature measurement
distance towards welding center was 5 mm and 10mm. The joint plate was low
carbon steel ST37 and austenitic stainless steel SS 304 with thickness 4mm. In
order to obtain the temperature, thermocouple was used complated with ADC and
computer to display and graph. Enviroment temperature was variated with room
temperature 100 ºC, 200 ºC and 250 ºC. The
low peak temperature cause
cooling rate post welding deacreased, which was
shown trough the
decreasing shape of
cooling graph. The
higher the environment temperature, the
lower welding peak
temperature. It happen
to both ST37
and SUS 304.
The peak temperature and
cooling rate post
welding of SUS
304 was lower
than ST37. The distribution of peak temperature similar
the incrase of enviroment temperature. The most similar and lowest peak
distribution of enviroment temperature was obtained 250ºC.
Penulis: Sugiarto, Ari
Wahyudi, Masduki
Kode Jurnal: jptmesindd110268
