Post on 02-Jun-2018
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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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Fillet Weld Callout Example
Weld other side
Drawing Callout Actual Weld
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Fillet Weld Callout Example
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