Download - Welding Details
Welding Details
Welding Process of bonding metal pieces together Work or metal pieces are melted along a
common edge or surface and their molten metal allowed to form a puddle or pool liquid metal
The pieces are fused when the puddle solidifies
Welding Process 3 major
– Gas welding– Electric arc welding– Resistance or spot welding
Gas Welding Uses a flame of an extremely high
temperature that literally melts the metal Also known as oxyacetylene
– oxygen– acetylene
Electric Arc Welding Commonly called Arc Welding Heat of electric arc used to fuse or cut
metal
Resistance (Spot) Welding Metals held tightly
together under pressure and subjected to electric current through the point of pressure
Electric current causes metals to heat up and fuse together
Types of Joints in Welding
1--BUTT
2--CORNER
3--TEE
4--LAP
5--EDGE
Commonly Used Types of Welds
fillet plug or slot spot seam groove
– square– V– Bevel– U– J
Basic Welding Symbols
Welding Symbol Practice Symbol placement for Fillet Weld
Special Welding Symbols Weld All Around
Weld All Around would be used to to secure a pipe column to a plate
Field Weld is welding done at the job site
Field Weld
Welds with Length and Spacing
SpacingLength
Size of Weld
General Weld Callout
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
Fillet Weld Callout Example Weld other side
Drawing Callout Actual Weld
Fillet Weld Callout Example weld both side
Drawing Callout Actual Weld
Groove Weld Symbol Callout
V-grooved weld1/4” root opening45° groove angle
Bevel weld1/4” root openingarrow side
Weld Finishes A welded surface to be finished to a greater degree
than just the structural weld a straight line or a convex arc is added to the weld symbol
Types of finished surface– M - machining– C - chipping– G - grinding
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
Welded Detail Drawing
Scale: your choice, as large as possible for “A” sheet
TS = True size of part 3/8” bevel weld at side
joints and 3/8” fillet weld at base plate/side joints of beam brackets
Profile sectioned items Cutting Planes are
assumed