There are various types of the resistance welding processes like spot welding seam welding projection welding flash welding percussion welding upset butt welding etc. Also having too large root opening on the weld joint can results in burn through.
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Drawing Which of the following are perspective drawing Cabinet cavalier clinographic Isometric diametric trimetric One point two point three point None Ans.
Projection welding is a kind of. Projection welding is a modification of spot welding in which the weld is localized by means of raised sections or projections on one or both of the workpieces to be joined. Projection welding is a form of resistance welding which uses pressure and electrical current to join two or more metal parts that have been designed to meet at one or more specific points with the maximum amount of contact. Projections are little projected raised points which offer resistance during passage of.
Causes of burn through. Projection welding is a modification of spot welding in which the weld is localized by means of raised sections or projections on one or both of the workpieces to be joined. Also too much weld penetration can often lead to burn through.
Projection welding is one kind of resistance weld where the shape or design of the part is used to make subtle point contacts to concentrate the current during welding. This is the method predominantly used in the United States. This kind of welding flaw is most common with soft or thin metals especially those that are 14 or less.
Projection welding is a variation of the spot welding process in which raised projections on one or both sheets localize and concentrate the welding energy. The most important variables of this assembly technique are the quality of the projections and the response of the cylinder as the projection collapses during the welding time. Projection welding has fewer variables that affect the resistance welding process as compared to spot welding.
3 Which of the following are axonometric drawing Cabinet cavalier clinographic Isometric diametric trimetric One point two point three point None Ans. Welding symbols provide the means of placing complete welding information on drawings. 2 Which of the following are oblique drawing Cabinet.
Mostly in almost all applications with various small projections are molded on single parts surfaces which need to weld. The primary cause of burn through is excessive heat. This technique allows for closer weld spacings on thicker materials than are possible with the conventional approach.
Trend projection is an example of which kind of forecasting. Heat is concentrated at the projections which permits the welding of heavier sections or the closer spacing of welds. Heat is concentrated at the projections which permits the welding of heavier sections or the closer spacing of welds.
The scheme for symbolic representation of welds on engineering drawings used in this manual is consistent with the third angle method of projection.
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