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Welding terminology. ANSI/AWS A3.0 - 94 Standard Welding Terms and Definitions.

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Presentation on theme: "Welding terminology. ANSI/AWS A3.0 - 94 Standard Welding Terms and Definitions."— Presentation transcript:

1 Welding terminology

2 ANSI/AWS A3.0 - 94 Standard Welding Terms and Definitions

3  Imperative to know the difference between a ‘joint’ and a ‘weld’ and use terms properly  Standard terms must be used when dealing with weld joint and weld geometry to avoid errors in communication Weld or Joint Geometry & Terms

4  Butt  Corner  T-Joint  Lap  Edge 5 Basic Joint Types

5 Butt Joint A Joint between 2 members aligned approximately in the same plane

6 Butt Joint - Applicable Welds  Bevel-groove  Flare-bevel-groove  Flare-v-groove  J-groove  Square-groove  U-groove  V-groove  Edge-flange

7 Corner Joint A Joint between 2 members located approximately at right angles to each other in the form of an L

8 Corner Joint - Applicable Welds  Fillet  Bevel-groove  Flare-bevel-groove  Flare-v-groove  J-groove  Square-groove  U-groove  V-groove

9 T-Joint A Joint between 2 members located at approximately right angles to each other in the form of a T

10 T Joint - Applicable Welds  Fillet  Bevel-groove  Flare-bevel-groove  J-groove  Square-groove

11 Lap Joint A Joint between 2 overlapping members in parallel planes

12 Edge Joint A Joint between the edges of 2 or more parallel, or nearly parallel, members

13 Joint Nomenclature  Joint root  Groove face  Root edge  Root face  Bevel angle  Depth of bevel  Groove angle  Groove radius  Root opening  Edge shapes  square  single or double bevel  single or double J  round

14 Joint Root The portion of the joint wher the metals are closest to each other

15 l Groove Face l Root Edge l Root Face

16 l Bevel Angle l Bevel Depth l Groove Angle l Groove Radius l Root Opening

17 Edge Shapes  Square  Single Bevel  Double Bevel  Single J  Double J  Flange  Round

18 The above welds may be applied to one side or both sides of the joint, or in combination. Groove Weld Types  Square  Scarf  V  Bevel  U  J  Flare-V  Flare-bevel

19 Single Groove Welds  Single Square  Single Bevel  Single V  Single J  Single U  Single Flare Bevel  Single Flare V

20 Groove Welds  Double Square  Double Bevel  Double V  Double J  Double U  Double Flare Bevel  Double Flare V

21 Welding Beads  Stringer bead : made without weaving motion  Weave bead : made with side to side oscillation

22 Parts Of A Weld  Toe  Face  Face reinforcement  Root reinforcement  Root surface  Weld Root  Bead  Back weld  Backing weld  Spacer  Heat-Affected Zone (HAZ)

23 Parts of Welds  Weld Face  Weld Toe  Face Reinforcement  Root Reinforcement  Weld Root  Back Weld  Backing Weld

24 Parts of Welds  Weld Root  Leg, Face, Toe  Spacer  Weld Metal  Heat Affected Zone

25 Weld Sizes & Terms Convex Fillet  Leg, size equal  Convexity  Actual throat  Effective throat  Theoretical throat Concave Fillet  Leg  Size (less than leg length)  Concavity  Actual, Effective throats equal  Theoretical throat

26 Convex Fillet Weld

27 Concave Fillet Weld

28 Joint & Root Penetration

29  Term used only in reference to groove welds  If only Partial Penetration is intended, it is incorrect to refer to the weld as Incomplete Joint Penetration Incomplete Joint Penetration


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