Method for producing a structural sheet metal component, and a structural sheet metal component
AssigneeBenteler Automobiltechnik GmbH
InventorsFriedrich Bohner, Jochen Dörr, Jochem Grewe
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Abstract
A method for producing a structural sheet metal component formed from an aluminum alloy for a motor vehicle includes providing an aluminum sheet blank in a state T4 or T5 or T6 or T7, heating the aluminum sheet blank to a heating temperature between 100° C. and 450° C., forming the aluminum sheet blank to a structural sheet metal component, and heat post-treatment of the formed structural sheet metal component.
Claims20
A method for producing a structural sheet metal component made from an aluminum alloy for a motor vehicle, comprising the steps of:
- providing an aluminum sheet blank in a state T4 or T5 or T6 or T7,
- prior to forming the aluminum sheet blank, heating the aluminum sheet blank in an unformed state thereof to a heating temperature between 350° C. and 450° C. and below solution heat treatment temperature of the aluminum sheet blank,
- forming the aluminum sheet blank to a structural sheet metal component at said heating temperature, and
- heat post-treatment of the formed structural sheet metal component, wherein in the heat post treatment the formed structural sheet blank is naturally aged at room temperature for less than 251 hours, followed by a heat post-treatment at 70° C. to 120° C. for 5 to 15 hours, said heat post-treatment excluding solution heat treatment of the formed structural part,
- wherein T4, T5, T6 and T7 refer to heat-treated states of an aluminum alloy according to DIN EN 515, with T4 referring to an aluminum sheet metal blank that is solution-annealed and naturally aged;
- T5 to an aluminum sheet metal blank that is quenched from a hot-forming temperature and tempered;
- T6 to a sheet metal blank that is solution-annealed and tempered;
- and T7 to a sheet metal blank that is solution-annealed and over-aged.
A method for producing a structural sheet metal component made from an aluminum alloy for a motor vehicle, comprising the steps of:
- providing an aluminum sheet blank in a state T4 or T5 or T6 or T7,
- heating the aluminum sheet blank to a heating temperature between between 350° C. and 450° C.,
- forming the aluminum sheet blank to a structural sheet metal component at said heating temperature, and
- heat post-treatment of the formed structural sheet metal component, wherein the heat post-treatment is performed in two steps, with a first step being performed for 5 to 15 hours between 70° C. and 120° C. and a following second step being performed for 12 to 24 hours at 100° C. to 200° C.,
- wherein T4, T5, T6 and T7 refer to heat-treated states of an aluminum alloy according to DIN EN 515, with T4 referring to an aluminum sheet metal blank that is solution-annealed and naturally aged;
- T5 to an aluminum sheet metal blank that is quenched from a hot-forming temperature and tempered;
- T6 to a sheet metal blank that is solution-annealed and tempered;
- and T7 to a sheet metal blank that is solution-annealed and over-aged.
Dependencies are inferred from the claim text.