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During the past few years the attention of architects, engineers and others encased in or connected with the building industry has been attracted to the possibilities of the application of welding processes to the joining of structural members. As oxy-acetylene welding was developed before electric arc welding became perfected it was only natural that the gas torch should be first considered.
Ultrasonic welding is the fastest known welding technique, with weld times typically between 0.1 and 1.0 seconds. In addition to welding, ultrasonic energy is commonly used for processes such as inserting metal parts into plastic or reforming thermoplastic parts to mechanically fasten components made from dissimilar materials.
In the late 1970s, Paper Welder, Inc., introduced a gold-tone Paper Welder in an effort to expand sales. This was a failure. Total production was around 100 units. Production of Paper Welders ceased in 1984. The information on the second model Paper Welder presented here was obtained largely from the interesting and informative research results.
Metal Inert Gas (MIG) welding, also sometimes called Gas Metal Arc Welding (GMAW) is a process that was developed in the 1940s for welding aluminum and other non-ferrous metals. MIG welding is an automatic or semi-automatic process in which a wire connected to a source of direct current acts as an electrode to join two pieces of metal as it is continuously passed through a welding gun.