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Introduction to Welding

Introduction to Welding

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Introduction to Welding

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  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 • Shielded metal arc • Submerged arc • (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 • Typeof 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