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Arc Welding: Types, Process, and Essential Components, Slides of Applied Mechanics

Assam Don Bosco UniversityApplied Mechanics

Explore the fundamentals of arc welding, including its definition, types (ac, dc, and tig), the role of electrodes and flux, starting the arc, and essential welder parts. Discover the most common electrodes and methods for starting an arc, as well as tips for preventing heat distortion.

Typology: Slides

2012/2013

Uploaded on 01/29/2013

dewansh
dewansh 🇮🇳

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Arc Welding

1. ARC WELDING

  • Page 74 in manual
  • Arc welding-is the process of fusing
  • metals by heat created in an electric arc

3. Define Electrode

  • A core of wire covered with flux.

4. Purpose OF Flux

  • Provides a gaseous shield and slag coat that
  • protects the weld from gases in the air.

6. STARTING THE ARC

  • Tapping
  • Striking

7. PARTS OF WELDER

    1. Ground Clamp.
    1. Electrode Holder insert bare end of electrode.
    1. Amp selection wheel.
    1. Start switch.

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9. Angle OF Electrode

  • 15-20 Degrees from vertical
  • Book says 80 degrees

10. Electrode Movements

  • Circles
  • Crescents

• Weaves ///////

12. Preventing Heat Distortion

  • A. Small Tack Welds.
  • B. Back step-series of short of short beads.
  • C. Preheating and penning with hammer.

13. Most Commonly Used

Electrode

• E

15. Methods OF STARTING AN ARC

  • A. Taping.
  • B. Scratching-striking.

Application:

  • Use metal you cut with the torch to make the following welds:
  • Pad of beads
  • Flat Butt
  • Outside Corner
  • Lap
  • T-weld