Welding

Welding Difference Between WPS and PQR
Difference Between WPS and PQR
A WPS is developed for each material alloy and for each welding type used. ... A WPS is supported by a Procedure Qualification Record (PQR or WPQR). A...
Welding Difference Between MIG and TIG Welding
Difference Between MIG and TIG Welding
The difference between the two is the way the arc is used. MIG (metal inert gas) welding uses a feed wire that constantly moves through the gun to cre...
Welding Difference Between Spot Welding and Tack Welding
Difference Between Spot Welding and Tack Welding
Spot welding is used mainly on foils or thin materials that have a thickness of a ΒΌ in. or less. The simplest way to remember the difference between t...