1. Welding Drawings
Lecture 2

2. Orientation of Weld Symbols
If a symbol has a vertical line in it, the vertical line is always on the left
All welding symbols are on page 678 fig 21.13

3. Field Weld
A weld that is not performed at the place of initial construction

4. Weld All Around Weld extending completely around the joint
All around is assumed on joints containing round parts

7. Multiple Reference Lines
Indicates a sequence of operations
First operation is closest to the arrow

8. Tail of the Welding Symbol
Used to put information for process, specifications or other reference information

9. Shown on page 673 fig 21.3

10. Contours Obtained by Welding
Flat symbol is typically horizontal above or below weld symbol
Convex curves toward ref line, Concave curves away from ref line

11. Finishing Processes Post weld finish to achieve contour
G-grinding R-rolling
C-chipping H-hammering
M-machining

12. Application of contours and finishing processes

13. Break in Arrow Line Used to show which part is to be prepared
Points toward part that will have a process done to it before the weld is applied (where the groove will be)

15. Fillet Weld Triangular shaped weld that goes in a corner
Use for : lap joints
corner joints
T joints

18. Weld length and pitch

19. Square Groove Weld
A weld placed between the two members of a butt joint
Gap between the parts is called a root opening

21. V-Groove
Weld placed in a v-shaped groove between 2 parts

22. Double V-groove
*Root opening only appears once on symbol

23. Bevel Groove
One member of the joint has a groove in it

25. U Groove
Weld in a u shaped groove between two parts

27. J Groove
J shaped groove in on part of the joint