1Scholar, Department of Mechanical Engineering, PPIMT, Hisar, India
2Assistant Professor, Department of Mechanical Engineering, PPIMT, Hisar, India
Online published on 21 November, 2017.
Shielded metal arc welding is one of the world's most popular welding processes, accounting for over half of all welding in some countries. Because of its versatility and simplicity, it is particularly dominant in the maintenance and repair industry, and is heavily used in the construction of steel structures and in industrial fabrication. SMAW is often used to weld carbon steel, low and high alloy steel, stainless steel, cast iron, and ductile iron.
Present research work investigates the effect of varying welding speed on bead properties such as area of HAZ, depth of penetration, grain size and hardness of mild steel weldments produced by shielded metal arc welding (SMAW). The base material used in the present investigation was Mild steel and E6027 or E7024 solid electrode was used as the filler material. From the experimental results it was found that with increase in welding speed hardness will decreases. The increase in welding speed affects the grain size of base metal and area of heat affected zone (HAZ) will decrease. Depth of penetration will decreases with increases in welding speed. Bending strength decreases with increase in welding speed.
Mild steel, Shielded metal arc welding, Heat affected zone, Penetration, Grain Size, Hardness
