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Welding — Recommendations for welding of metallic materials — Part 1: General guidance for arc welding EN 1011-2: Welding — Recommendations for welding of metallic materials — Part 2: Arc welding of ferritic steels EN 1011-3: Welding — Recommendations for welding of metallic materials — Part 3: Arc welding of stainless steels EN 1011-4
To supply the electrical power necessary for arc welding processes, a variety of different power supplies can be used. The most common welding power supplies are constant current power supplies and constant voltage power supplies. In arc welding, the length of the arc is directly related to the voltage, and the amount of heat input is related ...
voestalpine Böhler Welding is a manufacturer of welding consumables (joint welding, maintenance, repair and overlay welding and brazing), welding equipment and accessories with headquarters in Düsseldorf. The company owns over 50 subsidiaries in more than 25 countries, 2,300 employees, customers in approximately 150 countries and more than ...
It is a type of welding that uses a welding power supply to create an electric arc between a metal stick ("electrode") and the base material to melt the metals at the point of contact. Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used.
The flame is applied to the base metal and held until a small puddle of molten metal is formed. The puddle is moved along the path where the weld bead is desired. Usually, more metal is added to the puddle as it is moved along by dipping metal from a welding rod or filler rod into the molten metal puddle.
Not all welding processes require filler metal. Autogenous welding processes only require part of the existing base metal to be melted and this is sufficient, provided that the joint is already mechanically close-fitting before welding. Forge-or hammer welding uses hammering to close up the hot joint and also to locally increase its heat.
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