Please enable JavaScript.
Coggle requires JavaScript to display documents.
History of Welding: Group C, In 1920, automatic welding was introduced,…
-
In 1920, automatic welding was introduced
-
During the 1920s there was considerable research in shielding the arc and weld area by externally applied gases. The atmosphere of oxygen and nitrogen in contact with the molten weld metal caused brittle and sometimes porous welds.
-
Middle Ages
1800
1880
1890
1900
1919
1920
1930
-
-
Stud welding was developed in 1930 at the New York Navy Yard, specifically for attaching wood decking over a metal surface. Stud welding became popular in the shipbuilding and construction industries
During the 1920s, various types of welding electrodes were developed.
Immediately after the war in 1919, 20 members of the Wartime Welding Committee of the Emergency Fleet Corporation,
-
however, it did not become popular until the 1930s when the heavy-coated electrode found widespread use.
-
There was a thin coating of clay or lime, but it provided a more stable arc.
-
-
-
-
-
-
-
The concept was further refined in the late 1920s by H.M.Hobart, who used helium for shielding, and P.K. Devers, who used [argon]
-
