EFFECT OF POST HEAT TEMPERATURE TO HARDNESS AND MACROSTRUCTURE IN WELDED STELL ST 37
Abstract: The present study
aims to investigate the effect of post heat temperature of hardness and macrostructure
on the result steel welded St 37. Welded process with SMAW (Shelded Metal Arc Welding)
and AC-DC current. Plate steel ST 37 welded of longitudinal, than heat
treatment with temperature various:300°C, 400°C dan 500°C. Highest rate
hardness 157,83 kg/mm2 on temperature treatment spesiment 500ocause
have ferit grain boundary structure more and homogen so properties more
hardness. The lows bending strength 43,51 kg/mm2on raw material,
cause have ferit structure and perlit so more soft properties.The micostuctrure
welded area arround; ferit graind boundary, ferit widmans tatten, ferit
acicular and perlit.
Penulis: Subardi, Djoko
Suprijanto, Roza Lyndu R. Mahendra
Kode Jurnal: jptmesindd090116
