The completed welded joint may be referred to as a weldment. The form of these materials may see them referred to as parent plate or pipe, filler wire, consumable electrode (for arc welding), etc.Ĭonsumables are usually chosen to be similar in composition to the parent material, thus forming a homogenous weld, but there are occasions, such as when welding brittle cast irons, when a filler with a very different composition and, therefore, properties is used. ![]() The material added to help form the join is called filler or consumable. The parts that are joined are known as a parent material. A number are considered ' unweldable,' a term not usually found in dictionaries but useful and descriptive in engineering. Some materials require the use of specific processes and techniques. ![]() Welding is a fabrication process whereby two or more parts are fused together by means of heat, pressure or both forming a join as the parts cool. Welding is usually used on metals and thermoplastics but can also be used on wood. The completed welded joint may be referred to as a weldment. ![]() National Structural Integrity Research Centre.Structural Integrity Research Foundation.
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