WELDING

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WELDING
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Fabrication Process

• Joining two or more elements to make a single
  part is termed as fabrication process.
• Fairly large numbers of industrial components
  are made by fabrication process .
• Examples Aircraft ,Shipbuilding, Bridges, Sheet
  metal parts etc.

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Classification Of Fabrication Process

• Mechanical joining by means of bolts, screws and
  rivets.
• Welding, Brazing and Soldering.

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Definition for welding

• Welding is a joining process that uses heat,
  pressure, and/or chemicals to fuse two materials
  together permanently. Welding covers a temp range
  of 1500º F - 3000º F (800ºC - 1635ºC).

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Types Of Welding
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Plastic Welding

• The pieces are heated to a plastic state and
  then forced together by external pressure.

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Fusion Welding
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• Gas welding ( oxy acetylene, air acetylene ,oxy
  -hydrogen)
• Resistance welding (Butt, Projection, percussion
  ,spot , seam)
• Thermit welding
• Solid state welding ( friction, diffusion ,
  ultrasonic, explosive)
• Advance welding (electro beam ,laser beam)

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• Classification of ARC
• WeLding

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WELDING WELDING
ARC WELDING Carbon arc welding
ARC WELDING Metal arc welding
ARC WELDING Gas metal arc welding(MIG)
ARC WELDING Gas tungsten welding (TIG)
ARC WELDING Submerged arc welding
ARC WELDING Plasma arc welding
ARC WELDING Electro slag welding
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WELDING PARAMETERS
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Carbon Arc Welding

• In carbon arc welding heat is produced with an
  arc between a carbon electrode and work, normally
  no shielding gas is used.
• Carbon arc welding process can be used as an all
  position welding process.

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Carbon Arc Welding
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MIG Welding

• In mig welding process a consumable wire of 0.8
  to 2.4 mm dia is wounded in spool form is feed at
  a preset speed through a welding torch where it
  is provided the electrical connection and the
  shelding gas.

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MIG WELDING
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TIG WELDING

• Tig welding is a process in which the source of
  heat is an arc formed between a non consumable
  tungsten electrode and the work piece, shielding
  gas argon is supplied continuously during welding

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TIG WELDING
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TIG WELDING
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Submerged Arc Welding

• Submerged arc welding is the process in which
  continuous copper coated spooled wire is used
  with loose granulated powder ahead of the arc ,
  so to protect the molten pool from atmospheric
  gases.

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Submerged Arc Welding
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Carbon-Electrodes
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Welding Troch Cable
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TIG Welding Machine
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TIG Welding Torch
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Tungsten Electrodes
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Gas Regulator
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TIG WELDING
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