Li & Cai Intellectual Property (USA) Office
Method for evaluating the quality of steam-treated products
The present invention provides a method for evaluating the quality of steam-treated products, allowing easy, quick and precise evaluation of the quality of oxide films in steam-treated products such as black coated steel sheets. Specifically, the present invention provides a method for evaluating the quality of steam-treated products with a surface oxide film formed during steam treatment, wherein test pieces (100) are cut out from said steam-treated products to measure the amount of oxygen in said test pieces (100) as a basis for evaluating the brightness of the surface(s) of said test pieces and/or the thickness of the oxide film of said test pieces.
NIPPON STEEL NISSHIN CO., LTD.
C C G G G G C
C23C C23C G01N G01N G01N G01B C23C
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Shin Tadashi
Ueno Nakano