1. Introduction to Welding

2. Principle Welding Methods Oxyfuel Gas Welding Arc Welding Resistance Welding : joining without melting There are several other sub-categories…

3. Welding methods

4. Oxyfuel Gas Welding Heat from Chemical Reaction Economical Low heat Manual hence slow Good for thin plates

5. Arc Welding Heat from Electrical Energy Higher temperatures reached Electrode consumable or non-consumable 1.Shielded metal arc 2.Submerged arc 3.(Inert) Gas metal-arc Can be easily automated (MIG, TIG)

6. Types of Welds

7. Basic Joints for weldments Butt Corner Tee Lap Edge

8. Welding Symbols Welding Process Type of weld Length of Weld Number and pitch Field Weld Symbol All around indicator Which side of material Depth of bevel, size or strength Groove weld size Finishing designator Contour Groove angle Root opening