Flat product made of metal material, in particular a steel material, use of such a flat product, and roll and method for producing such flat products

A technology of metal materials and flat plates, applied in metal rolling, metal rolling, metal processing, etc., can solve the problem that the accumulation of roll materials cannot be completely eliminated, and achieve the effects of low friction coefficient, high stability, and low wear

Active Publication Date: 2015-09-02
THYSSENKRUPP STEEL EURO AG
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, however, accumulation of melted roll material on the initially ground smooth surface during the texturing process cannot be completely eliminated

Method used

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  • Flat product made of metal material, in particular a steel material, use of such a flat product, and roll and method for producing such flat products
  • Flat product made of metal material, in particular a steel material, use of such a flat product, and roll and method for producing such flat products
  • Flat product made of metal material, in particular a steel material, use of such a flat product, and roll and method for producing such flat products

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Embodiment Construction

[0044] According to the invention, a surface texture with a deterministic distribution of design features (texture features) is produced using a rolling texture method using a pulsed laser, preferably a short-pulse or ultrashort-pulse laser, from a rotating roll remove material from the surface.

[0045] For this purpose, the roll 1 to be scored is rotated in a rotating device. While the roller is rapidly rotating, the converging optical device 2 that converges the laser beam onto the surface of the roller moves laterally in the direction of the roller axis at a relatively low speed. Thus, the laser beam traces a helical path on the roll surface ( figure 1 ).

[0046] During a pulse duration of approximately 1 microsecond, the laser beam 3 penetrates to a certain depth into the material of the roller 1 . The material 4 or surface material of the roller 1 is composed of free conduction band electrons 5 and positive metal ions 6 ( figure 2 ).

[0047] The electrons 5 are a...

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Abstract

A flat product made of a metal material has been provided with deterministic surface texture which has a plurality of depressions which have a depth in the range of from 2 to 14 μm, wherein the depressions are designed to be I-shaped, H-shaped, cross-shaped, C-shaped or X-shaped, and wherein the surface texture has a peak count RPc in the range of from 45 to 180 l / cm, an arithmetic mean roughness Ra in the range of from 0.3 to 3.6 μm, and an arithmetic mean waviness Wsa in the range of from 0.05 to 0.65 μm. A roll which is particularly suitable for producing such a flat product has a deterministic surface texture which has a plurality of overlapping dimples, which are arranged such that they delimit a double-I-shaped, H-shaped, cross-shaped, C-shaped or X-shaped material texture in the roll surface, and wherein the surface texture of the roll, measured in the direction of the roll axis, is characterized by a peak count RPc in the range of from 80 to 180 l / cm, an arithmetic mean roughness Ra in the range of from 2.5 to 3.5 μm and an arithmetic mean waviness Wsa in the range of from 0.08 to 1.0 μm.

Description

technical field [0001] The invention relates to a flat product made of metallic material, in particular steel, to an advantageous use, to a roll which is particularly suitable for the manufacture of this flat product, and to a method for manufacturing a flat product of this type. A "flat product" in this context is to be understood as a sheet, in particular a sheet, or strip and other rolled products produced in an analogous manner, produced from metal or metal alloys. Background technique [0002] Flat products of the type discussed here are used to manufacture components that are subsequently coated with one or more coatings of paint in order to protect them from possible corrosion and to optimize their visual appearance. The quality of this visual appearance is judged in this case by the extent to which the surface texture of the respective sheet metal substrate affects the surface of the paint coating. [0003] Particularly high demands are placed on the appearance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B27/00B23K26/00B23K26/08
CPCB23K26/063B21B27/005B23K26/0823B23K2201/20B21B1/227B23K26/0084B21B2267/10B23K2203/04B23K26/0622B23K26/355B23K2101/20B23K2103/04Y10T428/12799Y10T428/12993
Inventor 卡尔-海因茨·科佩林马丁·科赫斯特凡·维施曼弗里德黑尔姆·马赫赖福尔克特·舒尔策-克拉施约尔格·瓦斯尔吉多·亨尼希马库斯·雷辛格
Owner THYSSENKRUPP STEEL EURO AG
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