SPOTLIGHT

 

Deep Drawn 
LBE customers have used our deep drawing capabilities to produce small watertight aluminum enclosures for ABS brake systems. Deep drawing is a sheet metal forming process that uses dies, punches and presses to form enclosures that are seamless on most sides. For example, thin walled aluminum cans for drinks are made this way.
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What is the Deep

Drawn method?

Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. It is thus a shape transformation process with material retention. The process is considered "deep" drawing when the depth of the drawn part exceeds its diameter. This is achieved by redrawing the part through a series of dies. The flange region (sheet metal in the die shoulder area) experiences a radial drawing stress and a tangential compressive stress due to the material retention property. These compressive stresses (hoop stresses) result in flange wrinkles (wrinkles of the first order). Wrinkles can be prevented by using a blank holder, the function of which is to facilitate controlled material flow into the die radius.

 

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Leister Blake Enterprises Ltd., #2109 - 1225 Kingsway Avenue, Port Coquitlam, BC, Canada V3C 1S2  |  Tel 604.464.4452  |  Fax 604.464.4352  |  email us