Instructions Sample 3: Basic MIG Welding Guide

The following instructions are a basic guide to help you with the following: 1.) setting up a MIG welder,  2.) performing a basic weld, and 3.) inspecting a completed weld.

1. Setting Up a MIG Welder

Steps:

1. Ensure the welding machine is turned off and unplugged.
2. Connect the grounding clamp to a clean, unpainted metal surface.
3. Install the correct wire spool for the job.
4. Feed the welding wire through the drive rollers and into the torch.
5. Attach the shielding gas cylinder and open the valve slowly.
6. Set the voltage and wire feed speed according to the material specifications.

Safety Notes:

• Wear a welding helmet, gloves, and flame-resistant clothing.
• Ensure adequate ventilation before starting work.

2. Performing a Basic MIG Weld

Steps:

1. Position the materials to be welded and secure them with clamps.
2. Turn on the welding machine.
3. Hold the welding torch at a 10–15 degree angle.
4. Pull the trigger to start the arc.
5. Move the torch steadily along the joint at a consistent speed.
6. Release the trigger to stop the weld.

Quality Check:

• Inspect the weld bead for even width and smooth appearance.
• Look for defects such as gaps or excessive spatter.

3. Inspecting a Completed Weld

Steps:

1. Allow the welded material to cool completely.
2. Clean the weld area using a wire brush.
3. Examine the weld for cracks, porosity, or undercutting.
4. Measure the weld size using a gauge if required.
5. Record inspection results according to company procedures.

Important:

• Report any defects to a supervisor before proceeding.