What are Welding Defects? Welding Defects can be defined as the irregularities formed in the given weld metal due to wrong welding process or incorrect welding patterns, etc. The defect may differ from the desired weld bead shape, size, and intended quality. Welding defects may occur either outside or inside the weld metal. Some of […]
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Welding joints is an edge or point where two or more metal pieces or plastic pieces are joined together. The two or more workpieces ( either metal or plastic) are joined with the help of a suitable welding process to form a strong joint. According to the American Welding Society, there are basically five types
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Shielded Metal Arc Welding (SMAW) is also called Manual Metal Arc Welding (MMAW) or flux shielded arc welding or popularly known as stick welding. In SMAW we generally use consumable types of electrodes. Consumable electrode means flux covered on the rod. Because of flexibility and simplicity, SMAW is the world’s best welding process. It is
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Welding is the process of joining of two or more pieces of materials especially metals with the help of heat and pressure. Before the 19th century, there was mainly one type of welding that is forge welding which was mostly preferred by blacksmiths after arc welding and oxy-fuel welding. But due to eye-watching progress in
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Introduction: Friction stir welding (FSW) is a solid-state joining process. Solid-state welding means that there is no molten state included in joining or welding the workpiece. This joining technique saves energy and is eco-friendly. It is mostly used to weld aluminum materials in the automobile and aerospace industries. The FSW is the process in which
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Explosive Welding (EW) is a solid state welding process i.e. this process does not include molten state during the welding of the different parts of metal which have to be welded. This method was developed in the decades after World War II. Dupont applied for the patent of this welding process in 1962 which was
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Friction Welding (FRW) is a solid-state welding process which means that in this process heat is not provided from outside the system and no molten state of metal is present in this process. In this welding, process heat is generated by mechanically induced friction by sliding a workpiece on another part of it. After some
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Electroslag Welding Process is a process in which the job is welded through the molten slag covering which is a result of a high quantity of heat which is generated by the circulation of electric current through the electrode and the job. Principle of Electroslag Welding: The electroslag welding process works on the principle of
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Introduction Flux cored arc welding (FCAW) is a semi-automatic or automatic arc welding process. It requires a continuously fed tubular electrode containing a flux and a constant current welding power supply. That is FCAW uses a tubular wire that is filled with a flux. The arc is started from the electrode to the job. The
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The Plasma Arc Welding (PAW) and the cutting process was invented by Robert M.Gage in 1953 and patented in 1957. This process was unique because it could do precision cutting on both thick and thin metal. It is also capable of spray coating hardening metal on other metals. Working Principle of Plasma Arc Welding PAW
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