Welding of Steels

 The capability to join steels is a highly researched and important topic for a variety of applications.  Historically, steel was joined together by rivets, which takes significantly more time to complete, especially for large scale joining projects, such as vessels.  Below are examples or riveted and welded joins.

 

Welding is a complicated science in it's own right, it involves the combination of many complex technologies. 

 

The purpose of welding is to fuse two parts together, this can be done with or without filler wire.  Most steel welding will be done with filler material but the study of welding can lead to some quite spectacular etched finishes, such as the stainless steel etch below.

 

There are numerous forms of welding, such as:

  • Manual Metal Arc Welding
  • Gas Metal Arc Welding
  • Flux Cored Arc Welding
  • Submerged Arc Welding
  • Metal Cored Arc Welding
  • Tungsten Inert Gas Welding
  • Laser Welding
  • Hybrid Laser Welding
  • Electron Beam Welding
  • Plasma Arc Welding
  • Friction Stir Welding
  • Electroslag welding
  • Rotary Friction Welding

Each of which is the subject of a wide field of specialisation.  Below is a video explaining some of the welding types from the Welding Institute

 

Fluxed Core welding is shown in the image below.  It is not a black art, as some suggest.  It is a technologically challenging process and these challenges are ongoing, with significant research ongoing into Laser Welding and Friction Stir Welding.

 

Previous Section
Back to Science of Steel