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1) heat concentration, heating time is short, small welding deformation. 2) metallurgical process is simple, generally do not do not need to fill materials and solvents, without shielding gas. 3) can adapt more similar species and welding of dissimilar metals, including welding galvanized steel sheet.Apr 1, 2015

Pressure is important because it provides the necessary mechanical force holding the two or more surfaces together during the welding sequence. This insures a good current path and contains the molten metal that may form to prevent expulsion.

The automotive industry uses GMAW for both production and maintenance. Robotic assembly lines use GMAW for time-efficient manufacturing processes. Pipefitters use GMAW during the welding of pipe joints. The rail industry uses GMAW for fast, durable repairs or construction of railroad track.Oct 29, 2015

The most important applications for TIG welding are pipeline and pipe welding. It is, however, used in many industries, such as aviation and aerospace and sheet metal industries when welding particularly thin materials and special materials such as titanium.

Resistance welding allows welders to join two metal workpieces together by employing the principle of heat generation through electric resistance. An electric current is passed to the metal sheets through weld electrodes that apply force to the sheets.Sep 23, 2021

The working principle of resistance welding is the generation of heat because of electric resistance. The resistance welding such as seam, spot, protection works on the same principle. Whenever the current flows through electric resistance, then heat will be generated.

The resistance welding working principle is that the application of current and force through the welded parts develops resistance and thus creates a nugget in the melt joint. Even when there is the passage of a large amount of current, no electric shock is caused as minimal voltages are applied.Mar 7, 2020

Resistance welding is accomplished when current is caused to flow through electrode tips and the separate pieces of metal to be joined. The resistance of the base metal to electrical current flow causes localized heating in the joint, and the weld is made.

Pressure welding uses friction or explosion to heat the joining section of metal workpieces and join them under pressure. The process is also called solid-state welding. Pressure welding is a generic term for welding methods that weld workpieces by applying mechanical pressure on the joining section (weld joint).