FOCUS ON DEEP DRAWING
FORMING
Examples of deep drawn parts ( image : Invernizzi Presse ).
THE FUTURE
Deep drawing can produce precise and intricate parts , including both symmetrical and asymmetrical parts . It is one of the most widely used processes in sheet metal forming .
“ Deep drawing is a metalforming process for creating seamless sheet metal parts that can be closed at one end and have a depth greater than their radius .”
Deep drawing is a manufacturing process in which sheet metal is progressively formed into a three-dimensional shape through the mechanical action of a die forming the metal around a punch .
The deep-drawn metal stamping process work hardens the metal , resulting in a seamless finished part that is stronger than the base material . When the length of a stamped part is equal to or greater than ½ of its diameter , it is generally termed as being “ deep drawn .”
Deep drawing uses radial tension-tangential compression to shape the metal . This deepdrawn process transforms flat sheet metal , or a blank , into a hollow vessel that may be cylindrical or box-shaped , with straight or tapered sides or a combination of straight , tapered and curved sides . The vessel is then redrawn through a series of dies , reducing its diameter and increasing its length with minimal change to the wall thickness . A flat sheet metal blank can be formed into a hollow body open on one side or a hollow body can be formed into a hollow body with a smaller cross-section [ DIN 8584 ].
Deep drawing is one of the most widely used processes in sheet metal forming . Apart from its use in many other sectors , it is applied in the automotive industry for the manufacturing of car body parts . Deep drawing can produce precise and intricate parts , including both symmetrical and asymmetrical parts .
Many different metals , such as cold-rolled steel , stainless steel , titanium , copper , brass , aluminium , HSLA and others , are included in the deep-drawn metal stamping process .
DDP1 2000 and 400-ton deep draw press ( Macrodyne ).
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