5/30/2023 0 Comments Learning factory welding![]() These basic weld symbols (arc and gas weld symbols, resistance weld symbols, brazing, forge thermit, induction, and Flow Weld Symbols) are summarized below and illustrated in figure 3-3. Weld symbols are used to indicate the welding processes used in metal joining operations, whether the weld is localized or “all around”, whether it is a shop or field weld, and the contour of welds. The locations of welding symbol elements with respect to each other are shown in Figures 3-2 above. The assembled “welding symbol” consists of the following eight elements or any of these elements as necessary: 3-2) represents the weld symbol on drawings. ![]() Welding Symbols Standard Locations of Elements of a Welding Symbol – Figure 3-2 Elements of a Welding SymbolĪ distinction is made between the terms “weld symbol” and “welding symbol.” If notes are not used, the tail of the symbol may be omitted. The notation to be placed in the tail of the symbol indicating these data is to be established by each user. The process, identification of filler metal that is to be used, whether or not peening or root chipping is required, and other pertinent data must be related to the welder. If a welder knows the size and type of weld, he has only part of the information necessary for making the weld. The tail of the welding symbol is used to designate the welding and cutting processes and the welding specifications, procedures, or supplementary information to be used in making the weld. Accordingly, the terms arrow side, other side, and both sides are used herein to locate the weld with respect to the joint. 3-2) is used to designate the type of weld to be made, its location, dimensions, extent, contour, and other supplementary information.Īny welded joint indicated by a symbol will always have an arrow side and an other side. The reference line of the welding symbol (fig. The joint is the basis of reference for welding symbols. This is the method predominantly used in the United States. The scheme for the symbolic representation of welds on engineering drawings used in this manual is consistent with the “third angle” method of projection. ![]() Welding symbols provide the means of placing complete welding information on drawings. Welding cannot take its proper place as an engineering tool unless means are provided for conveying the information from the designer to the workmen. ![]()
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