LOW-GLOSS CHEMICALLY COLORED STAINLESS STEEL, CHEMICALLY COLORED STAINLESS STEEL PROCESSED PRODUCT, AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2018/047527

A1

[Problem] To provide a colored stainless steel article having excellent viewing-angle color tone discrimination and excellent corrosion resistance, in which a chemical coloration technique having improved industrial color tone is used. [Solution] A chemically colored stainless steel article having an uneven surface formed by a grinding treatment, wherein the 60-degree mirror surface gloss [Gs(60°)] of the uneven surface is 5-50. In the grinding treatment, a sandblasting treatment alone is performed or sandblasting treatment and electrolytic polishing treatment are jointly performed. The sandblasting treatment is performed through use of a projection material configured from inorganic particles having a Mohs' hardness of at least 6. A manufacturing method comprising a sandblasting treatment step, an electrolytic polishing treatment step, a coloration treatment step for generating a coloring coating by dipping in a coloration liquid comprising a mixed solution of chromic acid and sulfuric acid, and a curing treatment step for dipping the coloration-treated stainless steel in a curing treatment liquid comprising a mixed solution of chromic acid and phosphoric acid and curing the coloring coating.

KAWAMI KAZUYOSHI (JP)
KINOSHITA ATSUSHI (JP)
FUKUTA TOMOYUKI (JP)
SAWADA YASUNOBU (JP)

PCT/JP2017/028033

March 15, 2018

August 02, 2017

Click for automatic bibliography generation  

ASAHIMEKKI CORP (JP)

C23C28/00; B24C1/06; B24C11/00; C25D11/38; C25F3/16; C25F3/24

JP2005247629A	2005-09-15
JP2001207607A	2001-08-03
JPS56112480A	1981-09-04

See also references of EP 3511439A4

SHIMODA Kazuhiro (JP)

View/Download PDF      PDF Help

Previous Patent: ELECTRONIC ACOUSTIC DEVICE AND METHOD FOR OPERATING SAME

Next Patent: INSTRUMENT TEMPERATURE ADJUSTMENT DEVICE