1. Welding Drawings

2. Designing for welding
The primary importance of welding is to unite various pieces of metal so that they will operate as a unit structure to support the loads to be carried
Welding processes include arc welding, gas welding, and resistance welding (40 total processes exist)

3. Gas & Arc Welding
Most common form is oxyacetylene welding gets heat from the burning of flammable gases. It is slow compared to other modern welding methods so is used primarily for repair & maintenance
Arc welding is the major industrial welding process-heat is generated by an electric arc struck between a welding electrode, or rod, and the workpiece. The arc is hot and melting and solidification of the weld metal occurs rapidly.

4. Resistance welding Widely used especially for mass production work
Heat is created from resistance losses as a high amperage current is sent across a joint between 2 mating surfaces

5. Plug welding
A plug weld refers to joining two pieces by welding through a hole in one of the pieces*

6. WELDING DRAWINGS BASIC WELDING JOINTS J-GROOVE FLARE BEVEL GROOVE SPOT
PROJECTION
SEAM
FILLET
PLUG
SLOT
SQUARE GROOVE
BEVEL GROOVE
APPLICABLE WELDS
TYPE OF JOINT
BASIC WELDING JOINTS

7. WELDING DRAWINGS BASIC WELDING JOINTS J-GROOVE FLARE V-GROOVE
FLARE BEVEL GROOVE
EDGE FLANGE
SQUARE GROOVE
V-GROOVE
BEVEL GROOVE
U-GROOVE
APPLICABLE WELDS
TYPE OF JOINT
BASIC WELDING JOINTS

8. WELDING DRAWINGS BASIC WELDING JOINTS FLARE V-GROOVE
FLARE BEVEL GROOVE
EDGE FLANGE
CORNER FLANGE
SPOT
PROJECTION
SEAM
FILLET
SQUARE GROOVE
V-GROOVE
BEVEL GROOVE
U-GROOVE
J-GROOVE
APPLICABLE WELDS
TYPE OF JOINT
BASIC WELDING JOINTS

9. WELDING DRAWINGS BASIC WELDING JOINTS J-GROOVE FLARE BEVEL GROOVE SPOT
PROJECTION
SEAM
FILLET
PLUG
SLOT
BEVEL GROOVE
APPLICABLE WELDS
TYPE OF JOINT
BASIC WELDING JOINTS

10. WELDING DRAWINGS BASIC WELDING JOINTS EDGE FLANGE CORNER FLANGE SPOT
PROJECTION
SEAM
EDGE
PLUG
SLOT
SQUARE GROOVE
BEVEL GROOVE
V-GROOVE
U-GROOVE
J-GROOVE
APPLICABLE WELDS
TYPE OF JOINT
BASIC WELDING JOINTS

11. The difference between Weld symbol & Welding symbol…*
Weld symbol indicates the type of weld
Welding symbol is a method of representing the weld on drawings. It includes supplementary information & consists of the following 8 elements.
Reference line
Arrow
Basic weld symbol
Dimension and other data
Supplementary symbols
Finish symbols
Tail
Specification, process or other reference

12. WELDING DRAWINGS
WELD TERMINOLOGY

13. Location significance of Arrow*
Arrow side- for fillet, groove, flanged weld symbols the arrow connecting the welding symbol reference line to one side of the joint
Other side – the side opposite the arrow side
Both sides

14. WELDING DRAWINGS
WELDING SYMBOLS

15. WELDING DRAWINGS
WELD TERMINOLOGY

16. COMPARISON OF A CAST SHAFT SUPPORT WITH A WELDED STEEL SHAFT SUPPORT
WELDING DRAWINGS
COMPARISON OF A CAST SHAFT SUPPORT WITH A WELDED STEEL SHAFT SUPPORT