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The main components of the typical orbital welding system are the power supply with integrated computer control, the welding head, and either a wire feed mechanism or a presharpened tungsten electrode. Welding of certain sizes and material types will also require a water/coolant system.
The heat-affected zone (HAZ) is a ring surrounding the weld in which the temperature of the welding process, combined with the stresses of uneven heating and cooling, alters the heat-treatment properties of the alloy. The effects of welding on the material surrounding the weld can be detrimental—depending on the materials used and the heat ...
The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.
Inventor A. Graham demonstrated, on welding pipes with a diameter of 152.4 mm, a method that uses radial friction welding with an intermediate ring for connecting long pipes, [9] [10] at long last succeeding after some attempts occurred in 1975, [11] and after scientists in Leningrad theorized on the idea in newspapers. [3]
A D-ring used to secure cargo in a utility trailer (A) D-ring (shown in isometric view) (B) Weld-on pivot link; note the incorrect fillet weld call-out (bottom-right). The correct method of securing a weld-on pivot link is a [t weld] which consists of a perpendicular vee butt joint secured to the billet using a butt weld or fusion weld.
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The root of the weld is the part of deepest penetration which is the opposite angle of the hypotenuse. The toes of the weld are essentially the edges or the points of the hypotenuse. The face of the weld is the outer visual or hypotenuse that you see when looking at a fillet weld. The legs are the other two sides of the triangular fillet weld.
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 welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.