Pengaruh Kuat Arus pada Automatic Weaving FCAW Berbasis Microcontroler ESP 32 Terhadap Sifat Mekanik dan Struktur Mikro

Abstrak

In the manufacturing and construction industries, welding plays an important role in determining the quality of joints. One way to improve this is by implementing an automatic welding system that aims to minimize joint defects, such as those that occur in manual welding. In this study, an analysis was conducted on the effect of current variations of 140 A, 160 A, and 180 A on FCAW welding using an ESP32 Shield GRBL 38PIN-based automatic weaving machine on SS400 steel plates with dimensions of 400 x 300 x 10 mm and E71T – 1C filler metal, and tested using tension, bending, and microstructure tests. The results show that increasing the current can increase heat input, which in turn increases strength. The highest tensile strength was obtained at a current of 180 A. Meanwhile, the bending test results for all variations met the acceptance criteria. The microstructure test results showed the dominance of ferrite and pearlite in the base metal and an increase in the pearlite fraction at higher currents. Thus, the right combination of parameters can produce welded joints with optimal mechanical properties.

Kata kunci

• FCAW
• Heat Input
• Micro
• automatic
• mechanical