Metal sheet having low friction coefficient and low waviness

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United States of America Patent

PATENT NO 11559829
APP PUB NO 20200368798A1
SERIAL NO

16635850

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Abstract

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A metal sheet having a low friction coefficient and a low waviness. Multiple round or roughly-round small pits are distributed on the surface of the metal sheet. The diameter of a single pit ranges from 30 μm to 150 μm, and the overlap between adjacent pits is lower than 10%. On the surface of the metal sheet where the pits are located, the proportion of the area of pits per square millimeter of surface area is greater than 30%, and the difference between the quantities of pits in any unit square millimeter is less than 20%. By means of the proper design of surface microstructure, the friction coefficient and the waviness can be effectively reduced, thereby improving the forming and painting performance of the material.

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Patent Owner(s)

Patent OwnerAddress
BAOSHAN IRON & STEEL CO LTD201900 NO 885 FUJIN ROAD SHANGHAI BAOSHAN DISTRICT SHANGHAI CITY SHANGHAI CITY 201900

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Xiaoming Shanghai, CN 249 2604
Li, Shanqing Shanghai, CN 18 4
Quan, Jizhe Shanghai, CN 4 2

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