Examples of welding methods that can be used are:

  • MAG-welding (Metal Active Gas)
  • MMA-welding (Manual Metal Arc)
  • TIG-welding (Tungsten Intert Gas)
  • Plasma welding
  • Submerged arc welding

Other welding methods than the ones mentioned above could of course also be used. Of the methods mentioned above MAG welding is the most common used welding method in the industry today. One of the reasons for this is that MAG-welding is very easy to automate (high productivity).

Static strength of welded joints

In order to reach the required tensile strength of the welded joint, both the weld metal and the HAZ (heat affected zone) must have sufficient strength. Several factors affect the strength of  the welded joint e.g. filler metal used (matching or undermatching), chemical composition, heat input, interpass temperature, etc. The strength of the weld metal (N/mm2) is mainly determined by the filler metal used whereas the strength of the HAZ more or less is determined by the cooling cycle (Δ t8/5).