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Research Paper | Material Science and Engineering | India | Volume 9 Issue 9, September 2020

Analysis of Tensile Strength & Impact Energy of Weld Specimen in Mild-Steel Square Bar with Variable Arc Voltage using Semi-Automatic Shielded Metal Arc Welding Machine

Naresh Nayak | Chandra Shekhar Nagendra ^[2]

Abstract: Welding processes are widely used throughout industry to perform a range of fabrication tasks. Of the various welding techniques available, stick-electrode welding, more formally known as Shielded Metal Arc Welding (SMAW) is one of the most common. SMAW is a consumed electrode welding technique, i. e. the electrode not only supplies the filler-metal, but also acts as the consumable material. Currently the electrode feed rate is carefully controlled during the welding process to ensure that the arc length remains constant. The obtained results will give the Tensile Strength & Impact Energy of the weld, and Weight of Specimen used. These two parameters viz. Tensile Strength & Impact Energy will help to conclude the result obtained. The strength of the welded work-piece will be tested and recorded with the help of Tests to be performed in Universal Testing Machine UTM (Tensile test) & Impact Test Machine ITM (Impact Test). This will be helpful in confirming the values of process parameters in SMAW. Later on, calculation of mass of specimen is done to determine the weight of the weld specimen.

Keywords: SMAW, Shielded Metal Arc Welding, ITM, Impact Testing Machine, UTM, Universal Testing Machine, Process Parameters, Arc Voltage

Edition: Volume 9 Issue 9, September 2020,

Pages: 1192 - 1196

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