Learning how to TIG weld made easy

Introduction

This tutorial simplifies the process of TIG welding for beginners, breaking down essential techniques, equipment, and setup to help you get started. By following these steps, you’ll gain a foundational understanding of TIG welding, allowing you to practice confidently.

Step 1: Understand the Equipment

• TIG Machines: Familiarize yourself with different types of TIG welding machines. The YesWelder TIG 250P is suitable for general steel welding, while the YesWelder AC/DC machine is better for aluminum.
• TIG Torch Components:
  • Tungsten Electrode: Use 2% lanthanated (blue) or 2% grey tungsten. Avoid red tungsten due to undesirable properties.
  • Gas Lens and Cup: A stubby gas lens improves gas coverage, and clear Pyrex cups allow better visibility.

Step 2: Set Up Your Machine

• Gas Selection: Use 100% pure argon gas, flowing at 15-20 cubic feet per hour. Avoid using mixed gases as they won't provide adequate shielding for TIG welding.
• Connect the Equipment:
  • Connect the ground clamp to the positive terminal.
  • Connect the TIG torch to the negative terminal.
  • Ensure the gas valve is fully opened for proper flow.

Step 3: Prepare Your Workspace

• Clean Your Materials: Remove mill slag, rust, and contaminants from the metal surface using a flat wheel or grinder. Clean the filler rod with acetone.
• Organize Your Area: Ensure your workspace is free of clutter, and the gas line is secure to prevent leaks.

Step 4: Grind the Tungsten Electrode

• Proper Grinding Technique:
  • Use a dedicated grinding stone to avoid contamination.
  • Hold the tungsten at a steep angle while rotating it slowly to create vertical grind lines. This ensures a steady arc.
• Aim for a pointed tip, roughly 3/16 inch in length.

Step 5: Practice Welding Technique

• Starting the Arc:
  • Turn on the gas and touch the tungsten to the metal to initiate the arc.
  • Maintain a distance of about 3/16 inch from the workpiece while welding.
• Movement:
  • Travel at a consistent speed, maintaining the same distance from the metal.
  • If you need to add filler rod, keep it close to the arc to prevent contamination.

Step 6: Break the Arc

• After finishing a weld, quickly pull the tungsten away from the metal to break the arc.
• Allow the shielding gas to continue flowing for about 6-8 seconds to protect the weld as it cools.

Step 7: Final Tips and Safety

• Monitor Gas Flow: Always check that your argon tank is closed after use to prevent leaks.
• Personal Protective Equipment: Use thin TIG gloves, an auto-dimming helmet, and a respirator when necessary, especially when welding aluminum or stainless steel.

Conclusion

By mastering these initial steps in TIG welding, you’ll build a strong foundation for future projects. Continue practicing the techniques outlined above to improve your skills. If you're interested in further learning, consider exploring more advanced topics, such as aluminum welding with AC machines. Happy welding!