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Weld joint geometry and welding symbols
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Weld joint geometry and welding symbols

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  • 1. Weld Joint GeometryWeld Joint Geometry and Welding Symbolsand Welding Symbols Types of weldsTypes of welds Groove weldsGroove welds Welding TechnologyWelding Technology
  • 2. Types of WeldsTypes of Welds  Numerous welds can be applied to theNumerous welds can be applied to the various types of jointsvarious types of joints  Considerations when choosing jointConsiderations when choosing joint geometry and weld types:geometry and weld types:  accessibility to the joint foraccessibility to the joint for weldingwelding  type of welding process beingtype of welding process being usedused  suitability to the structural designsuitability to the structural design  cost of weldingcost of welding
  • 3. Types of WeldsTypes of Welds  There are nine categories of weldsThere are nine categories of welds associated with weld symbolsassociated with weld symbols  Groove weldsGroove welds  Fillet WeldsFillet Welds  Plug or Slot weldsPlug or Slot welds  Stud weldsStud welds  Spot or projection weldsSpot or projection welds  Seam weldsSeam welds  Back Or Backing weldsBack Or Backing welds  Surfacing weldsSurfacing welds  Flange WeldsFlange Welds
  • 4. Types of Groove WeldsTypes of Groove Welds  A groove weld is “ a weld made in a groove betweenA groove weld is “ a weld made in a groove between the work pieces”the work pieces”  There are eight types of groove weldsThere are eight types of groove welds  Square-grooveSquare-groove  ScarfScarf  V-grooveV-groove  Bevel-grooveBevel-groove  U-grooveU-groove  J-grooveJ-groove  Flare-v-grooveFlare-v-groove  Flare-bevel-grooveFlare-bevel-groove
  • 5. Groove WeldsGroove Welds Square and double square-Square and double square- groove weldsgroove welds  Square-groove welds are the most economicalSquare-groove welds are the most economical to use, but are limited by thickness of theto use, but are limited by thickness of the membersmembers  Welds for one side are normally limited to a 1/4Welds for one side are normally limited to a 1/4 inch or lessinch or less
  • 6. Groove WeldsGroove Welds V-and double V-groove weldsV-and double V-groove welds •With thicker materials joint accessibility must be provided for welding to ensure weld soundness and strength
  • 7. Groove WeldsGroove Welds Bevel- and double-bevel-Bevel- and double-bevel- groove weldsgroove welds  Bevel- and J- groove welds are moreBevel- and J- groove welds are more difficult to weld than V- or U- groove weldsdifficult to weld than V- or U- groove welds  Bevel welds are easier in horizontalBevel welds are easier in horizontal
  • 8. Types of WeldsTypes of Welds U-groove and Double U-grooveU-groove and Double U-groove  Welds in using J- and U-Welds in using J- and U- grooves can be used togrooves can be used to minimize weld metalminimize weld metal  These welds are veryThese welds are very useful in thicker sectionsuseful in thicker sections
  • 9. Groove WeldsGroove Welds J-and double-J-groove weldsJ-and double-J-groove welds  J-groove are moreJ-groove are more difficult to welddifficult to weld because of the onebecause of the one vertical side (exceptvertical side (except in horizontal)in horizontal)  J-and U- are usedJ-and U- are used when economicwhen economic factors outweigh thefactors outweigh the cost of edgecost of edge preparationpreparation
  • 10. Groove WeldsGroove Welds flare-bevel and flare-v-grooveflare-bevel and flare-v-groove weldswelds  Flare -bevel andFlare -bevel and flare-v-groove weldsflare-v-groove welds are used inare used in connection withconnection with flanged or roundedflanged or rounded membermember
  • 11. Groove WeldsGroove Welds ScarfScarf  Scarf is used forScarf is used for brazingbrazing
  • 12. Groove WeldsGroove Welds  Their names imply what the actualTheir names imply what the actual configurations look like when viewed in aconfigurations look like when viewed in a cross sectioncross section  Single groove welds are welded from onlySingle groove welds are welded from only one sideone side  Double groove welds are welded on bothDouble groove welds are welded on both sidessides  Groove welds in many combinations areGroove welds in many combinations are used selection is influenced by accessibility,used selection is influenced by accessibility, economy, adaptation to structural designeconomy, adaptation to structural design
  • 13. THANKTHANK YOUYOU