Voestalpine Metal Forming Gmbh

Polytec Composites Nl B.v.

Karl Michael Radlmayr

Claudio Canalini

Wolfgang Stall

Cornelis Gerardus Van Koert

Konstantin Suhre

The invention relates to a method for internal high-pressure forming and hardening of galvanized pipes made of sheet steel in which a pre-fabricated pipe is used; the pipe has at least one inlet opening () and a cavity (); the pipe is heated to a temperature above the austenitization temperature (AC) of the respective steel alloy and after the achievement of a desired degree of austenitization, is inserted into an internal high-pressure forming tool and acted on with a pressurized medium, which is forced into the cavity () through the at least one inlet opening () until the pipe fills a predetermined mold () of the tool, characterized in that the forming tool is heated to a temperature between 400 and 650&#xb0; C., in particular 450-550&#xb0; C., and the pressurized medium is likewise heated and has a temperature of 400-650&#xb0; C.; after the austenitization, the pipe is allowed to passively cool or is actively cooled to a temperature of 400-600&#xb0; C., but a temperature above the martensite starting temperature (Ms) of the selected steel alloy, and the cooling of the pipe for hardening purposes only takes place after the removal from the mold.

Method and device for forming and hardening steel materials

A method for producing a shaped part from an aluminum sheet that includes an aluminum alloy, in particular an aluminum alloy of the 5000 series. The method includes introducing at least one aluminum sheet in a forming tool and cold-forming the aluminum sheet in the forming tool, and heating the cold-formed aluminum sheet at least once at least in some regions and at least once further metal forming the aluminum sheet. In order to create advantageous conditions for the method, it is proposed for the heated aluminum sheet to be subjected to the further metal forming step even before a temperature has been reached which the aluminum sheet has during the cold forming thereof.

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Steyregg, Austria

Karl Michael Radlmayr