Magnesium is a light metal with a relatively low melting point. As such, it can be challenging to weld effectively. In order to weld magnesium correctly, you need to use the right equipment and techniques.
The best way to weld magnesium is to use an oxy-acetylene torch with pure oxygen. This setup will allow you to heat the metal quickly and evenly, making for a strong weld joint. When welding magnesium, it's important to use short, quick strokes rather than long, slow ones. This will help prevent the metal from burning or becoming brittle.
If you don't have access to an oxy-acetylene torch, you can also use a TIG welder with thoriated tungsten electrodes. When using this method, it's important to keep the electrode tip clean and cool by dipping it in water regularly. Welding magnesium with a TIG welder can be tricky, so it's important to practice on scrap pieces before attempting any critical joints.
No matter what method you use, welding magnesium requires care and attention. By following these tips, you can ensure that your welds are strong and durable.