Preparation of V-Butt Joint using Arc Welding

Preparation of V-Butt Joint using Arc Welding

Objective:

To prepare a butt joint with mild steel strip using ARC Welding technique.

Material Required

Two pieces of Mild steel

Equipment Required

Welding unit, Electrode, Wire Brush, Tongs, goggles.

Procedure

• The edges of joining surfaces of metals are prepared.
• Clean the mild steel flats to be joined by wire brush.
• Arrange the flat pieces properly providing the gap for full penetration for butt joint (gap ½ thicknesses of flats).
• Practice striking of arc, speed and arc length control
• Set the welding current, voltage according to the type of metal to be joined.
• Strike the arc and make tacks at the both ends to hold the metal pieces together during the welding process.
• Lay beads along the joint maintaining proper speed and arc length (Speed 100-150 mm/min).
• Clean the welded zone and submit.

Sketch:

Precautions:

• Use goggles and gloves to protect the human being from the generated arc.
• Maintain constant arc length to get uniform weld bead.

Result: