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Shaping techniques, GD11695, GD11703, GD11705, GD11706_en, captura -…
To make pieces for sale or for industry, the metal goes through a series of shaping processes, depending on the type of metal and what we want to make.
SHAPING
These are techniques used to change the shape of the piece of metal by applying an external force. It can be done when the metal is hot or at room temperature.
ROLLING
The unprocessed metal is passed through a series of rollers that compress it, reduce its thickness and increase its length. It's usually done when the metal is hot.
Uses: Sheets, plates, bars ...
EXTRUSIÓN
The heated metal is pushed through a hole by a piston, using compression.
Uses: Bars, tubes and other shapes
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FORGING
The metal piece is shaped by repeated and continuous compression forces using hammers, tongs and anvils.
PRESS FORGING
The heated metal is placed between two dies, one fixed and the other mobile. The dies are the shape of the object we want to make. They are pressed together so that the piece takes the shape of the die.
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PUNCHING
This is a cold forging process: a sheet of metal is hit with a punch to make the required shape in a mould.
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WIRE DRAWING
A wire is pulled through a hole that has the required dimensions. A rotating drum is used to pull it through the hole to increase its length while reducing its diameter.
CASTING
Molten metal is poured into a container with a hollow space inside, which is the shape of the object we want to make. The mould can be made from sand, steel or cast iron.
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Uses: Engine blocks, fire hydrants, small parts and alloys with low melting points, ornaments, jewellery, sculptures and dental implants.
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