Tig Welding Near Magnets: What You Need to Know

Tig welding near magnets is a tricky process that requires careful attention to detail. Welding near a magnet can cause a number of problems, such as misaligned welds, overheating, and even improper penetration. To ensure a successful weld, it’s important to understand the challenges of welding near a magnet and how to properly prepare for the job.

Understanding the Challenges of Tig Welding Near Magnets

When tig welding near magnets, there are several challenges that must be taken into consideration. First and foremost, welding near a magnet can cause a “magnetic arc” to form, which is caused by the arc current interacting with the magnetic field of the magnet. This can cause the arc to become unstable and cause a misalignment of the weld bead.

In addition, welding near a magnet can also cause an increase in the temperature of the welded material. This is due to the magnetic field causing the arc to be hotter than it normally would be. This can cause the weld to become overheated, which can lead to porosity and other problems.

Preparation for Tig Welding Near Magnets

When tig welding near magnets, it’s important to take the necessary steps to ensure a successful weld. Here are some tips to keep in mind when preparing for the job:

  • Ensure that the welding surface is clean and free of debris. This will help reduce the risk of misalignment and overheating.
  • Be sure to use a tig welding machine with an adjustable current. This will help you control the arc and prevent it from becoming unstable.
  • Use an appropriate welding rod for the material being welded. The wrong rod can cause a number of issues, such as porosity and splatter.
  • Use a shielding gas to protect the weld from the atmosphere. This will help ensure that the weld is free of contaminants.
  • Be sure to use the correct welding technique. This will help ensure that the weld is properly penetrated and that the weld bead is properly aligned.


Tig welding near magnets can be tricky, but with the right preparation, it can be done safely and efficiently. By following the tips outlined above, you can ensure a successful weld and help prevent any potential problems. With the right preparation, you can confidently tig weld near magnets without any issues.

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