Audi Ag

Arcelormittal Investigacion Y Desarrollo, S.l.

Volkswagen Ag

Arcelormittal

Mtu Aero Engines Gmbh

Ludwig Schaller

Pascal Drillet

Reinhold Meier

Raisa Grigorieva

Robert Canti

Uwe Paar

Karl Michael Bader

Erik Zeller

Michael Alsmann

Isabelle Thirion

Michael Ferstl

Stefan Sanhieter

Christian Disch

Benedikt Krönauer

Thomas Vietoris

Emmanuel Conter

Jörg Schneid

Wilfried Vette

Rafael Dreier

Matthias Mederer

Sven Jansen

Apparatus for processing a sheet-metal workpiece includes a press tool including a bottom die and top die. A press includes a platen which receives the bottom die, and a ram which receives the top die. The press tool is protected by a protective system which detects an idle stroke and includes an adjustable spacer assembly to prevent collision between the top and bottom dies.

Apparatus for processing sheet-metal workpieces

A manufacturing process of a hot stamped coated part comprising the following successive steps, in this order: providing a hot rolled or cold rolled steel sheet comprising a steel substrate and an aluminium-silicon alloy precoating, the precoating containing more than 50% of free aluminium and having a thickness comprised between 15 and 50 micrometers, then cutting the steel sheet to obtain a precoated steel blank, then heating the blank under non protective atmosphere up to a temperature Tcomprised between T&#x2212;10&#xb0; C. and T, Te being the eutectic or solidus temperature of the precoating, then heating the blank from the temperature Tup to a temperature Tcomprised between 840 and 950&#xb0; C. under non protective atmosphere with a heating rate V comprised between 30&#xb0; C./s and 90&#xb0; C./s, V being the heating rate between the temperature Tand the temperature T, in order to obtain a coated heated blank, then soaking the coated heated blank at said temperature Tfor a time tcomprised between 20 s and 90 s, then hot stamping the blank in order to obtain a hot stamped coated part, then cooling said stamped part at a cooling rate in order to form a microstructure in the steel substrate comprising at least one constituent chosen among martensite or bainite.

Fabrication process of coated stamped parts

Growing community of inventors

Reichertshofen, Germany

Ludwig Schaller