The Welding Projection application was created to help in a fast, accessible and simple way the Welding Engineers, Welding Technicians, Welding Inspector, Quality Auditors, Production Leaders and Operators. The APP Welding Projection is able to guide and provide the main parameters of the welding projection (Force, Current and Welding Time). The APP uses an internally obtained and experimentally validated database. By means of internal formulas they calculate the approximate values.
The Projection weld is used to join small stamped parts, usually nuts, bolts and pins.
Projection welding is a variation of the spot welding process in which projections are raised on one or both of the parts to be joined, concentrating the welding energy. This technique allows for narrower weld spacings in thicker materials, which is possible with the conventional approach. Projection welding is commonly used to attach connection points such as bolts and nuts to sheet metal assemblies, especially in the automotive industry. Some materials suitable for the projection welding process include aluminum, low carbon steel and stainless steel.
The conventional spot welding method involves the passage of a high voltage electric arc between two electrodes on both sides of the material to be welded. This results in localized fusion of the two materials, thereby creating a weld "point". The projection technique uses the same basic principle, but uses a surface projection on one or both surfaces with the weld points. These projections focus in the inner direction of the inner surfaces of the weld sheets and concentrate the heat generated during the weld discharge. This maximizes the melt potential and allows the thicker materials to be welded with the same current settings.
The projections of the pieces are typically of spherical or conical cross-section. Where both sheets are embossed, carefully calculated patterns of projections ensure accurate indexing. Projections are also often used precisely to align parts.
As with conventional spot welding, the electrodes are held in static rotation while the workpieces are advanced between them. The feed rate must be carefully designed to ensure that the projections match the weld arc timing as they pass between the electrodes.
The automobile construction industry uses this procedure extensively in assembling the vehicles. Connector points, nails used to fasten seats, panels, seat belts and interior trim are generally associated with projection welding. This technique also offers the added advantage of minimal shrinkage and low distortion at the weld site. Dissimilar thickness materials are also easier to weld using this method.
Projection welding is a suitable process for numerous metals, including low carbon steel, stainless steel and aluminum. Increasing efficiency means that sheets up to 0.125 inches (3 mm) thick can successfully be welded. This process has some disadvantages, such as the additional steps in the production process and the limitations with respect to the materials that can be used. The benefits, however, generally outweigh the disadvantages, and so the projection weld is a good alternative to conventional spot welding.
If in doubt contact us!
avasconcelosaguiar@gus.pittstate.edu
Good job!
The Projection weld is used to join small stamped parts, usually nuts, bolts and pins.
Projection welding is a variation of the spot welding process in which projections are raised on one or both of the parts to be joined, concentrating the welding energy. This technique allows for narrower weld spacings in thicker materials, which is possible with the conventional approach. Projection welding is commonly used to attach connection points such as bolts and nuts to sheet metal assemblies, especially in the automotive industry. Some materials suitable for the projection welding process include aluminum, low carbon steel and stainless steel.
The conventional spot welding method involves the passage of a high voltage electric arc between two electrodes on both sides of the material to be welded. This results in localized fusion of the two materials, thereby creating a weld "point". The projection technique uses the same basic principle, but uses a surface projection on one or both surfaces with the weld points. These projections focus in the inner direction of the inner surfaces of the weld sheets and concentrate the heat generated during the weld discharge. This maximizes the melt potential and allows the thicker materials to be welded with the same current settings.
The projections of the pieces are typically of spherical or conical cross-section. Where both sheets are embossed, carefully calculated patterns of projections ensure accurate indexing. Projections are also often used precisely to align parts.
As with conventional spot welding, the electrodes are held in static rotation while the workpieces are advanced between them. The feed rate must be carefully designed to ensure that the projections match the weld arc timing as they pass between the electrodes.
The automobile construction industry uses this procedure extensively in assembling the vehicles. Connector points, nails used to fasten seats, panels, seat belts and interior trim are generally associated with projection welding. This technique also offers the added advantage of minimal shrinkage and low distortion at the weld site. Dissimilar thickness materials are also easier to weld using this method.
Projection welding is a suitable process for numerous metals, including low carbon steel, stainless steel and aluminum. Increasing efficiency means that sheets up to 0.125 inches (3 mm) thick can successfully be welded. This process has some disadvantages, such as the additional steps in the production process and the limitations with respect to the materials that can be used. The benefits, however, generally outweigh the disadvantages, and so the projection weld is a good alternative to conventional spot welding.
If in doubt contact us!
avasconcelosaguiar@gus.pittstate.edu
Good job!
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