Shaping Techniques

Shaping Techniques

1. Shaping

   • Techniques used to change the shape of the metal by an external force. When metal is hot or at room temperatures
     • Rolling
       • The unprocessed metal is passed through rollers, that compress it and reduce its thickness. It's ussually done with hot metal.
         • Uses
     • Forging
       • The metal piece is shapedby compression forces using hammers, tongs and anvils.
         • Uses
       • Manual forging has been repaced by indrustial one.
     • Extrusion
       • The heated metal is pussed through hole, using compression.
         • Uses
     • Press forging
       • The heated metal is placed between 2 dies, one fixed and the other mobile. They are pussed together, so the piece take the die's shape.
         • Uses
     • Punching
       • A cold sheet of metal is hit with a punch to make the required shape in a mold.
         • Uses
     • Bending
       • A metal sheet is subjected to force to make a curved shape.
         • Uses
     • Wire Drawing
       • A wire is pushed through a hole that has required dimensions. To pull it through the hole is used a rotating drum.
         • Uses

2. Casting

   • Molten metal is poured into a container with a hollow inside, which is the side of the object.
     • First, the metal is heated in a furnace.
       • Then, the liquid is poured into the mould.
         • After that, we cool down it.
           • Finally, the piece is removed from the mould.

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