013380383X.pdf - Chapter 10 Advanced Welding Symbols Learning Objective \u2022 Be able to interpret AWS welding symbols that include all of the information

013380383X.pdf - Chapter 10 Advanced Welding Symbols...

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149 CHAPTER 10 Advanced Welding Symbols Weld all around Field weld Weld length Intermittent weld Skip weld KEY TERMS Spacer Convex contour Concave contour Flush contour Melt-through LEARNING OBJECTIVE Be able to interpret AWS welding symbols that include all of the information that could be used on them OVERVIEW Many additional elements can be added to the basic parts of the AWS welding symbol. The additional elements and their placement, along with the basic parts of the welding symbol, are shown in Figures 10-1 and 10-2. They are described throughout the remainder of this chapter. WELD ALL AROUND The specification to weld all around requires that the weld be made to encapsulate the entire joint. In the case of a circular joint, the weld all around symbol is not required. The weld all around symbol consists of a circle that is placed over the intersection where the end of the reference line meets the arrow. Examples of weld all around welds and welding symbols are shown in Figures 10-3 and 10-4. Pitch Chain intermittent weld Staggered intermittent weld Consumable insert Backing
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150 CHAPTER 10 Figure 10-1 AWS Standard Locations of the Elements of a Welding Symbol ( AWS A2.4:2012, Figure 3 reproduced and adapted with permission from the American Welding Society (AWS), Miami, FL. ) Figure 10-2 AWS Supplementary Symbols ( AWS A2.4:2012, Figure 2 reproduced and adapted with permis- sion from the American Welding Society (AWS), Miami, FL. )
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Advanced Welding Symbols 151 FIELD WELD A field weld is defined by the American Welding Society (AWS) as “[a] weld made at a location other than a shop or the place of initial construction.” 1 The field weld symbol consists of a flag that is placed at the intersection where the end of the reference line meets the arrow (see Figure 10-5). 1 AWS A3.0M/A3.0:2010, reproduced with permission from the American Welding Society (AWS), Miami, FL Field Weld Symbols Figure 10-5 Field Weld Symbol Examples Weld All Around Symbols Figure 10-3 Weld All Around Symbols PLATE WELDED ON TOP OF ANOTHER PLATE BEAM WELDED TO A PLATE CHANNEL WELDED TO A PLATE Figure 10-4 Example of Weld All Around Welds
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152 CHAPTER 10 WELD LENGTH Each weld, with the exception of spot and plug welds, has a length component. The weld length may be the entire length of the joint or some portion thereof. There are several different methods for providing the weld length information on a drawing. When the weld is to be the entire length of the joint, the length component is not required on the welding symbol. The welding symbol points to the joint requiring the weld, and the weld is made the entire length of that par- ticular joint, as shown in Figure 10-6. If a weld is required to make a change in di- rection, an additional welding symbol or a multi-arrow symbol should be used.
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