Title (en)

Process for the production of a light metal component with a cavity

Title (de)

Verfahren zur Herstellung eines mit einem Hohlraum versehenen Leichtmetall-Bauteils

Title (fr)

Procédé de fabrication d'un composant en métal léger conçu avec un espace creux

Publication

EP 2617502 A3 20170712 (DE)

Application

EP 13151154 A 20130114

Priority

DE 102012100458 A 20120120

Abstract (en)

[origin: EP2617502A2] The method comprises producing a cast part by sand casting, ingot mold casting or pressure casting, heating the cast part after solidification and a removal of sprues and feeders to a temperature of 350-500[deg] C, and inserting the cast part into a die. A kneading of a metallic structure is carried out by a smithy process under a partial transformation of the cast part in the die. The cast part is completely transformed during the smithy process. A core is used for designing the cavity, and consists of sand or salt solidified by inorganic or organic binders. The method comprises producing a cast part by sand casting, ingot mold casting or pressure casting, heating the cast part after solidification and a removal of sprues and feeders to a temperature of 350-500[deg] C, and inserting the cast part into a die. A kneading of a metallic structure is carried out by a smithy process under a partial transformation of the cast part in the die. The cast part is completely transformed during the smithy process. A core is used for designing the cavity, and consists of sand or salt solidified by inorganic or organic binders. The method is performed by a core material made of thixotropic materials. The cast part is forged after the removal from the die and without additional heating. The light metal is made of semi-finished aluminum alloy.

IPC 8 full level

B22D 18/02 (2006.01); B21J 5/00 (2006.01); B22D 21/04 (2006.01)

CPC (source: EP)

B21J 5/002 (2013.01); B22D 18/02 (2013.01); B22D 21/04 (2013.01)

Citation (search report)

• [X] EP 0850825 A2 19980701 - SHIMANO KK [JP]
• [X] EP 2332671 A1 20110615 - BENTELER AUTOMOBILTECHNIK GMBH [DE]
• [X] EP 2286941 A1 20110223 - BENTELER AUTOMOBILTECHNIK GMBH [DE]
• [A] WO 2009006939 A1 20090115 - BHARAT FORGE ALUMINIUMTECHNIK [DE], et al
• [I] BOUVIER V ET AL: "Le procédé COBAPRESS: un procédé d'une expérience de vingt cinq ans, qui a de beaux jours devant /// The COBAPRESS process: a process rich of a twenty-five years experience, with a bright future", HOMMES ET FONDERIE,, vol. 378, October 2007 (2007-10-01), pages 10 - 16, XP009139338

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2617502 A2 20130724; EP 2617502 A3 20170712; DE 102012100458 A1 20130725

DOCDB simple family (application)

EP 13151154 A 20130114; DE 102012100458 A 20120120