Method for hardening sheet metal material and hardened metal sheet material

Patent metadata

Field	Value
Publication number	US-10837070-B2
Application number	US-201815958787-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Sep 2, 2013
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

In order to provide a method for hardening a metal sheet material by means of which a particularly hard and scratch-resistant surface is produced on the metal sheet material, it is proposed that the method comprises the following:
applying at least one peening stream to the metal sheet material, wherein at least one peening stream is applied to a front side of the metal sheet material and/or a rear side of the metal sheet material, respectively.

First claim

The invention claimed is:

1. A metal sheet material comprising a front side which is surface-hardened by peening and a rear side which is surface-hardened by peening,
wherein the metal sheet material is a stainless steel sheet material comprising 8% to 10.5% by weight of nickel,
wherein the material thickness of the metal sheet material is not more than 1.5 mm and
wherein the metal sheet material has a mean final surface hardness of at least 300 HV.

2. The metal sheet material according to claim 1 , wherein the metal sheet material has a matt surface.

3. A metal sheet product, which is configured as a kitchen worktop panel, a sink or a basin and comprises a metal sheet material comprising a front side which is surface-hardened by peening and a rear side which is surface-hardened by peening,
wherein the metal sheet material is a stainless steel sheet material comprising 8% to 10.5% by weight of nickel,
wherein the material thickness of the metal sheet material is not more than 1.5 mm and
wherein the metal sheet material has a mean final surface hardness of at least 300 HV.

4. The metal sheet material according to claim 1 , wherein the stainless steel sheet material comprises the stainless steel with the material number 1.4301 in accordance with EN 10027-2.

5. The metal sheet material according to claim 1 , wherein the metal sheet material has a mean final surface hardness of at least approximately 400 HV.

6. The metal sheet product according to claim 3 , wherein the stainless steel sheet material comprises the stainless steel with the material number 1.4301 in accordance with EN 10027-2.

7. The metal sheet product according to claim 3 , wherein the metal sheet material has a mean final surface hardness of at least 400 HV.

8. The metal sheet product according to claim 3 , wherein the metal sheet material has a matt surface.

9. A method of forming a sheet metal product, comprising:
providing a metal sheet material as a starting material, wherein the metal sheet material comprises a front side which is surface-hardened by peening and a rear side which is surface-hardened by peening,
wherein the metal sheet material is a stainless steel sheet material comprising 8% to 10.5% by weight of nickel,
wherein the material thickness of the metal sheet material is not more than 1.5 mm and
wherein the metal sheet material has a mean final surface hardness of at least 300 HV; and

manufacturing a kitchen worktop panel, a sink or a basin from said starting material.

Assignees

• Blanco Gmbh & Co Kg

Inventors

• Schiebol Markus

Classifications

• C22C38/02

  containing silicon · CPC title

• C21D9/48

  deep-drawing sheets · CPC title

• B24C1/10

  for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D31/06; as a metallurgical treatment C21D7/00, C22F1/00) · CPC title

• C22C38/34

  with more than 1.5% by weight of silicon · CPC title

• Y10T29/479

  by shot peening or blasting · CPC title