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The basic welding symbol which goes on the reference line to indicate the shape of the weld such as a fillet or plug. The symbol is placed on the arrow side or other side of the line to indicate which side of the joint the weld goes. The dimensions and other numbers such as the length of the weld or number of spot welds go above and below the ...
Two pointed electrodes apply pressure and current to two or more thin workpieces. Automobile industry, Aerospace industry. Resistance seam welding [6] 22. RSEW. Two wheel-shaped electrodes roll along workpieces, applying pressure and current. Aerospace industry, steel drums, tubing. Projection welding. 23.
A Welding Procedure Specification (WPS) is a formal document describing welding procedures. It is an internal document used by welding companies to instruct welders (or welding operators) on how to achieve quality production welds that meet all relevant code requirements. Each company typically develops their own WPS for each material alloy and ...
Structural steel welding - Welding of steel structures. AS/NZS 1554.2. Structural steel welding - Stud welding (steel studs to steel) AS/NZS 1554.3. Structural steel welding - Welding of reinforcing steel. AS/NZS 1554.4. Structural steel welding - Welding of high strength quenched and tempered steels.
Weld quality assurance. Weld quality assurance is the use of technological methods and actions to test or assure the quality of welds, and secondarily to confirm the presence, location and coverage of welds. [original research?] In manufacturing, welds are used to join two or more metal surfaces. Because these connections may encounter loads ...
Dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials (metals, plastics, or ceramics). The penetrant may be applied to all non-ferrous materials and ferrous materials, although ...
Post weld heat treatment (PWHT) is a controlled process in which a material that has been welded is reheated to a temperature below its lower critical transformation temperature, and then it is held at that temperature for a specified amount of time. [1] It is often referred to as being any heat treatment performed after welding; however ...
The carbon equivalent is a measure of the tendency of the weld to form martensite on cooling and to suffer brittle fracture. When the carbon equivalent is between 0.40 and 0.60 weld preheat may be necessary. When the carbon equivalent is above 0.60, preheat is necessary, postheat may be necessary. The following carbon equivalent formula is used ...