Method for producing hot-formed components

Patent metadata

Field	Value
Publication number	US-10876179-B2
Application number	US-201715424228-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	Aug 5, 2014
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A method is provided for producing a hot-formed component, in particular a sheet-metal component made of steel, aluminum, magnesium or a combination of the materials. The method includes the acts of: heating a semifinished product, in particular a sheet-metal blank or a pre-shaped sheet-metal component, inserting the semifinished product into a molding tool, and quenching the semifinished product in the molding tool, wherein a change is made to the microstructure of the material at least in one portion. Before the insertion of the semifinished product into the molding tool, an insulating device is applied in at least one predetermined region of the semifinished product. The insulating device is connected in a form-fitting, integral and/or force-fitting manner to the semifinished product.

First claim

What is claimed is:

1. A method for producing a hot-formed component, the method comprising the acts of:
heating a semi-finished product;
prior to introducing the semi-finished product into a forming tool, applying insulating installation in the form of a permanent magnet to the semi-finished product in a form-fitting, materially integral, and/or force-fitting manner in at least one predetermined region of the semi-finished product;
introducing the heated semi-finished product with insulation installation into the forming tool; and
cooling the semi-finished product in the forming tool, wherein a cooling rate in a portion of the semi-finished product covered by the insulation material is such that an microstructure is formed in the portion covered by the insulation material is more ductile than a microstructure formed in a portion of the semi-finished product that is not covered by the insulation material.

2. The method according to claim 1 , wherein the component is made of steel, aluminum, magnesium, or a combination of these materials.

3. The method according to claim 2 , wherein the semi-finished product is a metal blank or a preformed sheet-metal component.

4. The method according to claim 1 , wherein the insulating installation is disposed on the semi-finished product prior to heating.

5. The method according to claim 4 , wherein the insulating installation is disposed on the semi-finished product prior to heating, and is removed from the semi-finished product post heating.

6. The method according to claim 4 , wherein the insulating installation is disposed on the semi-finished product prior to heating, and is left on the semi-finished product post heating of the semi-finished product and during hardening.

7. The method according to claim 1 , wherein the insulating installation is disposed on the semi-finished product prior to heating, and is removed from the semi-finished product post heating.

8. The method according to claim 1 , wherein the insulating installation is disposed on the semi-finished product prior to heating, and is left on the semi-finished product post heating of the semi-finished product and during hardening.

9. The method according to claim 1 , wherein the insulating installation is disposed on the semi-finished product post heating, and remains on the semi-finished product during hardening.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Kupetz Bernd
• Becker Juergen

Classifications

• C21D8/00 Primary

  Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment (hardening articles or materials formed by forging or rolling with no further heating beyond that required for the formation C21D1/02) · CPC title

• C21D2221/00

  Treating localised areas of an article · CPC title

• B21D22/208

  by heating the blank or deep-drawing associated with heat treatment (C21D takes precedence) · CPC title

• B21D22/201

  Work-pieces; preparation of the work-pieces, e.g. lubricating, coating · CPC title

• B21D22/022 Primary

  by heating the blank or stamping associated with heat treatment (C21D takes precedence) · CPC title