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Method for manufacturing plated steel sheet having excellent distinctness of image after coating, and plated steel sheet manufactured thereby

A manufacturing method and technology of distinctness of image, which is applied in the manufacture of tools, coatings, metal rolling, etc., can solve problems affecting distinctness of image, achieve excellent distinctness of image of coating, and improve the effect of distinctness of image of coating

Inactive Publication Date: 2018-06-08
POHANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, even if the shape profile of the plating surface is removed by controlling the average waviness of the temper-rolled plated steel sheet, in the process of processing into automotive parts before painting, there will be residues on the plated layer and the base iron. The shape profile of the substrate disc, which remains in place after coating, affecting distinct image

Method used

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  • Method for manufacturing plated steel sheet having excellent distinctness of image after coating, and plated steel sheet manufactured thereby
  • Method for manufacturing plated steel sheet having excellent distinctness of image after coating, and plated steel sheet manufactured thereby
  • Method for manufacturing plated steel sheet having excellent distinctness of image after coating, and plated steel sheet manufactured thereby

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Embodiment Construction

[0065] Hereinafter, the present invention will be described in more detail through examples. However, the following examples are merely illustrative for explaining the present invention in more detail, and do not limit the scope of rights of the present invention. This is because the scope of rights of the present invention is determined by the content described in the claims and the content reasonably derived therefrom.

[0066] (Example)

[0067] After preparing a pickled hot-rolled steel sheet of general low carbon steel, the hot-rolled steel sheet is cold-rolled to manufacture a cold-rolled steel sheet. At this time, the surface roughness of the final process roll of the cold rolling process is formed by shot peening and electric discharge machining, thereby adjusting the average roughness (Ra) and the number of peaks per unit length (RPc) and adjusting the long-wavelength waviness (Wsa1- 5) After adjusting to 0.18 to 0.66 μm, cold rolling is performed at a cold reductio...

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Abstract

The present invention relates to a plated steel sheet used as an automobile outer panel, etc., and more specifically, to a method for manufacturing a plated steel sheet having excellent distinctness of image after coating, and a plated steel sheet manufactured thereby.

Description

technical field [0001] The present invention relates to a plated steel sheet used as an automobile outer panel, and more specifically, to a method for producing a plated steel sheet excellent in distinctness of image, and a plated steel sheet produced by the method. Background technique [0002] Plated steel sheets coated with zinc, aluminum, etc. are widely used as steel sheets for automobile outer panels because they are excellent in corrosion resistance, weldability, and paintability. Stamping formability is required, and excellent distinctness of image is also required. [0003] The distinctiveness of painting refers to the degree to which the painted surface is beautiful and the image reflected on the painted surface can be clearly displayed without deformation. In the past, it was mainly dealt with as a problem of painting technology (Patent Document 1), And mainly studied the improvement of coating methods and coatings. As a result, painting quality has been signifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B27/02C23C2/06C23C2/12C25D3/22
CPCB21B1/22B21B2001/228B21B2261/00B21B2267/00C23C2/06C23C2/12C25D3/22B21B27/02
Inventor 全选镐
Owner POHANG IRON & STEEL CO LTD
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