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Products and solutions, 2001-09-11, 02:00 AM

Krupp Drauz starts production on new hydroforming press

Heilbronn/Germany-based Krupp Drauz GmbH, part of the Systems/Suspensions business unit of ThyssenKrupp Automotive, has expanded its tube and parallel plate hydroforming capabilities with the start-up of a new press. Operating with pressures up to 4,000 bar and a maximum clamping force of 50,000 bar, the new press is one of the most advanced of its kind in the world and augments the range of parts and processes available at Drauz.

The press bed measures 5,000 x 2,750 millimeters and allows the hydroforming of large, complex parts such as 3-meter-plus roof rails. In the tube hydroforming process, round or shaped tubular blanks are placed in a surrounding mold and then expanded to the required size and shape by water pressure.

In addition to classic tube hydroforming, the press is also capable of performing hydro-mechanical and hydrostatic deep-drawing operations. In these processes, the die used in conventional deep-drawing is replaced by a pressurizable water box. The blanks are shaped by moving the forming punch against the counter-pressure of the water box. This new technique is particularly suitable for large drawn parts; advantages include improved component surface quality. Furthermore, the use of a liquid medium in place of a die reduces the cost and time of developing and testing forming tools.

Krupp Drauz has received orders to be carried out on the new press from Audi, Volks-wagen, Porsche, DaimlerChrysler and BMW.

For further information contact:
ThyssenKrupp AG
Trade Press
Bernd Overmaat
Telephon: +49 (0)211 824-36012

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