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Dawson
Shanahan Ltd., Cranborne Industrial Estate, Potters Bar, Hertfordshire,
England, EN6 3JN Sub Contract Machining in all materials. Cold Forming and Cold Heading of Copper, Aluminium & Steel |
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What is Cold Forming?
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Cold
forming is a manufacturing process whereby metal is shaped without removal
of material. A simple blank (perhaps sawn from a round bar) is placed
within a die and a punch is pressed into the blank. The blank then takes
on the form of the punch and the die.
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To view the animation again, right-click on the image and select 'play'. If you want it to loop around select 'loop' before selecting 'play'. |
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The case illustrated above is an example of a type of cold forming known as Backward Extrusion. Other types of cold forming are: Forward Extrusion and Freeflow. The advantages of cold forming over machining from solid are:
The saving on raw material can be very significant as can the saving in machining time. Both of these qualities directly translate into savings for our customers and enable Dawson Shanahan to offer a more competitive solution than other companies who are unable to offer this facility. Improvements in component properties are due to the grain structure of the material being elongated and forced to follow the contours of the part thus increasing its strength. Additionally, during cold forming the part undergoes work-hardening thus improving machinability. |
