Pengaruh Kuat Arus dan Waktu Pengelasan Pada Proses Las Titik (Spot Welding) Terhadap Kekuatan Tarik dan Mikrostruktur Hasil Las Dari Baja Fasa Ganda (Ferrite-Martensite)
Abstract: This research was
conducted to investigate the appropiate spot welding variable to get the maximum
tensile strength. The highest of tensile strength referred as good quality of
weldment. The plate was
made from low
carbon steel with
phase ferrite and martensite. The current of welding used 0.9 kA, 1.6 kA, dan
1.85 kA with welding time were 0.25, 0.5 , 0.75 and 1 second. Mechanical properties
testing done involved
tensile strength to
know shear strength
of weld joint. Microstructure test
used optical microscope.The results show that spot
welding with the current of 1.85kA and welding time of 1
second has the highest tensile strength
(about 237.04 N/mm2). On the other
hand, the lowest tensile
strength (150 N/mm2) was produced by combination of 0.9 kA
and 0.25 second welding time. It was
caused by recrystallization phase deformation on steel.
Penulis: Lisa Agustriyana,
Yudy Surya Irawan, Sugiarto
Kode Jurnal: jptmesindd110264
