KUALITAS REPAIR WELDING METODE MIG DENGAN PERLAKUAN PREHEATING PADA CAST WHEEL ALUMINIUM SEBAGAI SUPLEMEN MATERI MATA KULIAH TEKNIK PENGELASAN
| Main Author: | Prihonggo, Uut |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Jurnal Nosel
, 2015
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| Online Access: |
http://jurnal.fkip.uns.ac.id/index.php/ptm/article/view/8191 http://jurnal.fkip.uns.ac.id/index.php/ptm/article/view/8191/5952 |
Daftar Isi:
- The purpose of this research are: (1) to investigate the effect of repair welding on cast wheel Aluminium with MIG welding method by preheating treatment on hardness. (2) to investigate the effect of repair welding on cast wheel Aluminium with MIG welding method by preheating treatment on the level of toughness. (3) to investigate the effect of repair welding on cast wheel Aluminium with MIG welding method by preheating treatment on microstructure photo. (4) to compile the results of this research into the study of teaching material welding engineering courses in mechanical engineering education program majoring in technical and vocational education in faculty of teaching and science education, UNS Surakarta. The testing was conducted in LKP Inlastek Surakarta, Politeknik Manufaktur Ceper, Klaten and in the laboratory techniques S-1 UGM Yogyakarta. This research that the used MIG welding method with preheating treatment. The temperature as used in preheating is 121oC. The population in this research is all of wheels using aluminium alloy. The sample in this study is the cast wheel aluminium alloy. The research is an experimental researchand data analysis using descriptive analysis techniques to directly observe experimental results and then analyze and summarize the results of research. The test performed include: testing of material composition, toughness testing, hardness testing, and microstructure. Based on the results of this study concluded that (1) the composition of cast wheels are Al-7,22%Si. (2) the weld toughness test results (0,049 J/mm2) lower than before welding (0,077 J/mm2). This suggests that the welds more brittle than the raw material. (3) the hardness test results showthe raw material area are 466,26 BHN, the HAZ area are 550,31 BHN, and the welding area are 455,03 BHN. (4) the images show the distribution of the metal microstructure of Al and Si is more evenly distributed in the weld area and raw material but the weld metal grains smaller than raw material.