Capacitor-Discharge Welding & its Importance | PPT

1
(No Transcript)
2
Working Process Of Capacitor-Discharge Welding
system

• Fastest form of resistance welding utilizes
  capacitors to deliver power.
• Capacitors are charged with a large amount of
  energy.
• Then this charged energy is rapidly released into
  the parts within milliseconds.

3
This welding process occurs in 4 steps

• They are
• Contact
• Ignition
• Placement (or closing the Gap)
• Completion of the Weld Bond

4

• Step 1. Stud Gun allows contact with the
  material.
• Step 2. The CD gun is triggered passing the weld
  charge through the Gun, giving ignition of the
  stud at the stud tip.
• Step 3. The tip melts, a small area of the
  material under the head of the fastener also
  starts to melt. The Capacitor Discharge gun
  forces the stud into the melted material, closing
  the gap between fastener and material, and
  landing the fastener properly.
• Step 4. The stud is held in place as it instantly
  bonds together with the base material.a

5
Applications

• Projection Welding
• Weld nuts and fasteners
• Advanced high strength steels
• Coated steels

6
Advantages

• Uniform high Welding Quality
• Requires no re-working on the other side of the
  weld
• Requires no additional material such as flux,
  inert gas
• Elimination Operations like drilling, riveting,
  etc
• No leakages even when welding on containers
• No air and water required
• The machine can be run on a generator
• Voltage fluctuation never effect
• No blackish mark on the welded part
• Cost of electrodeless

7
Features

• Weld counter
• Fabricated frame structure for housing the
  capacitor bank, control circuits, and Welding
  Transformer
• Conservative design and use of proven factors
  like the electrolytic capacitor, solid- state
  switches insure long welding life and ease of
  operation

8

• Capacitor Discharge Welding Machines that are
  suitable to join small-diameter studs to thin
  base metals. 2-3 milliseconds are needed to
  complete a Capacitor-Discharge Stud welding cycle
  as thin as 0.02 inches. The short-time welding
  minimizes the amount of heat generated
  penetration depth into the parent material making
  it ideal for welding smaller diameter ferrous
  non-ferrous studs on thin gauge base metals.

9
www.yesautomation.ae