Welding equipment

Welding processes are usually based on concentrated sources of heat which heat up a chosen place up to temperatures relevant to a base material and a process. in case of welding the base material melts. While pressure welding temperatures should be high enough to enable appropriate plastic deformations as well as physical and chemical processes, that are necessary to make the joint. Due to the fact that there are disadvantages of heating materials, it is essential that welding power sources provide required amount of concentrated energy only to the welded place.

 

Welding power sources include: electric arc; stream of a low-temperature plasma; stream of electrons; laser; resistance of metals that are welded; mechanical fiction; electromagnetic field; gas-oxygen flame.

 

Welding processes are based on transformation energy sources into heat.

 

These are the basic requirements for power sources: high temperature should be concentrated on a relatively small area; equipment should be inexpensive, easy to use, safe and reliable.

 

Above mentioned heat sources and furthermore power sources have been used in many different methods of welding, spot welding and thermal cutting.