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How to Weld Monel with TIG

How to Weld Monel with TIG

Monel is a nickel-copper alloy that is often used in marine and chemical engineering applications. It is highly resistant to corrosion and has excellent mechanical properties, making it a popular choice for many projects. However, welding monel can be tricky. This blog post will look at how to weld monel using the TIG (Tungsten Inert Gas) process.

Preparing the Area for Welding

Before you begin welding, you must ensure the area is free of debris or contaminants. This means cleaning the area with a wire brush or vacuum cleaner before welding. You also need to make sure the pieces of monel are firmly clamped together, so they don’t move during welding.

Setting Up Your Welder

Next, set up your welder for TIG welding. This involves attaching the correct tungsten electrode, setting the amperage range, and connecting your gas flow regulator. Ensure all connections are secure and your gas flow rate is set correctly before beginning work.

Welding with TIG

Once everything is set up, you can begin welding by following these steps:

  • Start by striking an arc on the surface of the metal using your tungsten electrode. Keep your hand steady as you do this; any movement will result in poor welds.
  • As soon as an arc has been established, slowly move the electrode along the joint while maintaining a constant current flow from your welder’s power supply unit (PSU). This should create a uniform bead along the joint line of both pieces of metal being joined together.
  • Once you have reached the end of your weld pass, stop feeding the filler wire and slowly lift off from the joint so that no undercutting occurs.
  • Finally, allow enough time for cooling before inspecting your weld for any flaws or defects, such as porosity or cracking, that could lead to premature failure of your monel component down the line.


With proper preparation and setup, anyone can learn how to weld monel successfully using TIG welding techniques! Proper cleaning methods combined with careful attention to detail will ensure that whatever project you’re working on will be successful –– so don’t forget to take all necessary precautions when prepping and welding! After completing all these steps successfully, you can rest assured knowing that your monel component will last for years to come!

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