welding detail

8/11/2019 Welding Detail

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Welding

Details


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Welding

Process of bonding metal pieces together

Work or metal pieces are melted along a

common edge or surface and their moltenmetal allowed to form a puddle or pool

liquid metal

The pieces are fused when the puddlesolidifies


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Welding Process

3 major

Gas welding

Electric arc welding

Resistance or spot welding


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Gas Welding

Uses a flame of an extremely hightemperature that literally melts the metal

Also known as oxyacetylene

oxygen

acetylene


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Electric Arc Welding

Commonly called Arc Welding

Heat of electric arc used to fuse or cut metal


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Resistance (Spot) Welding

Metals held tightlytogether under

pressure and

subjected toelectric current

through the point

of pressureElectric current

causes metals to

heat up and fuse

to ether


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Types of Joints

in Welding

1--BUTT

2--CORNER

3--TEE

4--LAP

5--EDGE


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Commonly Used

Types of Welds

fillet

plug or slot

spot

seam

groove

square

V

Bevel

U

J


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Basic Welding Symbols


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Special Welding Symbols

Weld All Around

Weld All Aroundwould be used to to secure a

pipe column to a plate

Field Weldis welding done at the job site

Field Weld


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Welds with Length and Spacing

Spacing

Length

Size of Weld


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General Weld Callout


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Fillet Weld Callout Example

Weld arrow side

Drawing Callout Actual Weld

Size of Weld--NO larger than the maximum material thickness of

the metals being joined


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Weld other side

Drawing Callout Actual Weld


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weld both side

Drawing CalloutActual Weld


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Groove Weld Symbol Callout

V-grooved weld

1/4 root opening

45 groove angle

Bevel weld1/4 root opening

arrow side


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Weld Finishes

A welded surface to be finished to a greater degree

than just the structural weld a straight lineor a

convex arcis added to the weld symbol

Types of finished surface

M - machining

C - chipping

G - grinding


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Assignment

Review and coordinate the following

consultant sheets into the contract documents

they must match the floor plans, sections, and

elevations.

Sheets P-1, P-2, P-3, M-1, M-2, E-1, E-2, & E-3

ld d il


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Welded Detail

Drawing

Scale: your choice, aslarge as possible forA sheet

TS = True size of part

3/8 bevel weld at sidejoints and 3/8 filletweld at base plate/side

joints of beam bracketsProfile sectioned items

Cutting Planes are

assumed

welding detail

Documents