Weld Joint Geometry Weld Joint Geometry and Welding Symbolsand Welding Symbols

Types of weldsTypes of welds

Groove weldsGroove welds

Welding Technology Welding Technology

Types of WeldsTypes of Welds

Numerous welds can be applied to the Numerous welds can be applied to the various types of joints various types of joints

Considerations when choosing joint Considerations when choosing joint geometry and weld types:geometry and weld types: accessibility to the joint for weldingaccessibility to the joint for welding type of welding process being usedtype of welding process being used suitability to the structural designsuitability to the structural design cost of weldingcost of welding

Types of WeldsTypes of Welds There are nine categories of welds associated There are nine categories of welds associated

with weld symbolswith weld symbols Groove welds Groove welds Fillet WeldsFillet Welds Plug or Slot welds Plug 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

Types of Groove WeldsTypes of Groove Welds A groove weld is “ a weld made in a groove between the A groove weld is “ a weld made in a groove between the

work pieces”work pieces” There are eight types of groove weldsThere are eight types of groove welds

Square-grooveSquare-groove Scarf Scarf V-grooveV-groove Bevel-grooveBevel-groove U-grooveU-groove J-grooveJ-groove Flare-v-groove Flare-v-groove Flare-bevel-grooveFlare-bevel-groove

Groove Welds Groove Welds Square and double square-Square and double square-

groove weldsgroove welds

Square-groove welds are the most Square-groove welds are the most economical to use, but are limited by economical to use, but are limited by thickness of the membersthickness of the members

Welds for one side are normally limited to Welds for one side are normally limited to a 1/4 inch or lessa 1/4 inch or less

Groove WeldsGroove WeldsV-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

Groove WeldsGroove WeldsBevel- and double-bevel-Bevel- and double-bevel-

groove weldsgroove welds

Bevel- and J- groove welds are more difficult to Bevel- and J- groove welds are more difficult to weld than V- or U- groove weldsweld than V- or U- groove welds

Bevel welds are easier in horizontal Bevel welds are easier in horizontal

Types of Welds Types of Welds U-groove and Double U-grooveU-groove and Double U-groove

Welds in using J- and Welds in using J- and U-grooves can be U-grooves can be used to minimize weld used to minimize weld metal metal

These welds are very These welds are very useful in thicker useful in thicker sectionssections

Groove WeldsGroove WeldsJ-and double-J-groove weldsJ-and double-J-groove welds

J-groove are more J-groove are more difficult to weld difficult to weld because of the one because of the one vertical side vertical side (except in (except in horizontal)horizontal)

J-and U- are used J-and U- are used when economic when economic factors outweigh factors outweigh the cost of edge the cost of edge preparation preparation

Groove WeldsGroove Weldsflare-bevel and flare-v-groove flare-bevel and flare-v-groove

weldswelds

Flare -bevel and Flare -bevel and flare-v-groove flare-v-groove welds are used in welds are used in connection with connection with flanged or flanged or rounded member rounded member

Groove WeldsGroove WeldsScarfScarf

Scarf is used for Scarf is used for brazing brazing

Groove WeldsGroove Welds Their names imply what the actual Their names imply what the actual

configurations look like when viewed in a configurations look like when viewed in a cross sectioncross section

Single groove welds are welded from only Single groove welds are welded from only one sideone side

Double groove welds are welded on both Double groove welds are welded on both sidessides

Groove welds in many combinations are Groove welds in many combinations are used selection is influenced by used selection is influenced by accessibility, economy, adaptation to accessibility, economy, adaptation to structural design structural design

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