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Welding terminology WIT Pg. 4-1 Instructor Should Explain:

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Presentation on theme: "Welding terminology WIT Pg. 4-1 Instructor Should Explain:"— Presentation transcript:

1 Welding terminology WIT Pg. 4-1 Instructor Should Explain:
Knowledge of welded joint terminology is essential in every day job communication. Use of proper terms makes it much easier for welding personnel to relay various fitup and welding problems encountered during the fabrication process to other involved personnel.

2 Standard Welding Terms and Definitions
ANSI/AWS A Standard Welding Terms and Definitions

3 Weld or Joint Geometry & Terms
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

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

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

15 Groove Face Root Edge Root Face

16 Bevel Angle Bevel Depth Groove Angle Groove Radius Root Opening

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

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

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 Leg Size (less than leg length) Concavity
Concave Fillet Leg Size (less than leg length) Concavity Actual, Effective throats equal Theoretical throat Convex Fillet Leg, size equal Convexity Actual throat Effective throat Theoretical throat

26 Convex Fillet Weld

27 Concave Fillet Weld

28 Joint & Root Penetration

29 Incomplete Joint Penetration
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


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