PENGARUH WAKTU TEKAN DAN HASIL GUMPALAN TERHADAP KEKUATAN GESER PADA LAS TITIK

Abstract: Spot welding is actually used for body of car manufacture on automobile industry. The purpose of this research was to know the good time of pressure and the current of welding, especially for 1,5 mm sheet metal  welding. The methods that were used in this study were, first of all, making of experiment of the strenght of the welding result, processing dat, analyzing data and making conclusion and report. After doing the research and getting the result, the good time of pressure and current used on 1,5 mm sheet metal was 10, 20 and 30 seconds and 70 Amp. Is was proven that after the shear tested for the pressure time 10 second and current 70 Amp. The result of treatment gotten was 488,658 N/mm2, and for the pressure time 30 seconds and Amp, the shear strenght gotten was  510,593  N/mm2.  The  data  analysis  the  writer  concluded  that  time  of  pressure  and  current  were  very insfluenntial  on  the  result  of  the  strenght  of  welding  by  using  spot  welding  machine.  It  was  because  of  the electrode pressure time of welding on the material would cause heat that making nugget. The heat processing will influence the result of welding extension.
Keywords: Nugget, holding time, spot welding, sheet metal
Penulis: Nofriady Handra
Kode Jurnal: jptmesindd140224

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