Method for hardening sheet metal material and hardened metal sheet material

Patent metadata

Field	Value
Publication number	US-2016177409-A1
Application number	US-201615056396-A
Country	US
Kind code	A1
Filing date	Feb 29, 2016
Priority date	Sep 2, 2013
Publication date	Jun 23, 2016
Grant date	—

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

1 . Method for hardening a metal sheet material, comprising 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.

2 . Method according to claim 1 , wherein at least one peening stream is applied, in each case, to both a front side and to a rear side of the metal sheet material.

3 . Method according to claim 1 , wherein at least one peening stream is applied, in each case, to the front side and the rear side of the metal sheet material at least at times simultaneously.

4 . Method according to claim 1 , wherein a hotspot of a peening stream which is applied to the front side of the metal sheet material and a hotspot of a peening stream which is applied to the rear side of the metal sheet material overlap one another by at least 80%.

5 . Method according to claim 1 , wherein the metal sheet material has a material thickness of not more than approximately 3 mm.

6 . Method according to claim 1 , wherein the metal sheet material is a stainless steel sheet material.

7 . Method according to claim 1 , wherein the metal sheet material has a mean starting surface hardness before the application of the at least one peening stream of not more than approximately 200 HV.

8 . Method according to claim 1 , wherein the metal sheet material has a mean final surface hardness after the application of the at least one peening stream of at least approximately 300 HV.

9 . Method according to claim 1 , wherein the at least one peening stream is generated from a peening material in which at least 50% by weight of the peening material has a largest particle diameter of at least 0.8 mm.

10 . Method according to claim 1 , wherein the at least one peening stream is generated from a peening material in which at least 50% by weight of the peening material has a largest particle diameter of not more than 1.0 mm.

11 . Method according to claim 1 , wherein the metal sheet material is moved relative to the peening stream during the application of the at least one peening stream.

12 . Metal sheet material comprising a front side which is surface-hardened by peening and/or a rear side which is surface-hardened by peening.

13 . Metal sheet material according to claim 12 , wherein the metal sheet material comprises both a front side which is surface-hardened by peening and also a rear side which is surface-hardened by peening.

14 . Metal sheet material according to claim 12 , wherein the material thickness of the metal sheet material is not more than approximately 3 mm.

15 . Metal sheet material according to claim 12 , wherein the metal sheet material is a stainless steel sheet material.

16 . Use of a metal sheet material comprising a front side which is surface-hardened by peening and/or a rear side which is surface-hardened by peening for manufacturing a kitchen worktop panel, a sink or a basin.

17 . Metal sheet product, in particular a kitchen worktop panel, a sink or a basin comprising a metal sheet material comprising a front side which is surface-hardened by peening and/or a rear side which is surface-hardened by peening.

Assignees

• Blanco Gmbh & Co Kg

Inventors

• Schiebol Markus

Classifications

• C22C38/001

  containing N · CPC title

• C21D7/06 Primary

  by shot-peening or the like · CPC title

• C22C38/002

  containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title

• C22C38/34

  with more than 1.5% by weight of silicon · 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