B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01) C23C 28/00 (2006.01)
Patent
CA 2352158
In the present application, a steel sheet having surface-treated zinc-based plating is provided which comprises a zinc-based plating layer, a chromium-free conductive intermediate layer and an organic resin layer, all of the layers being superimposed one on another in the order mentioned. Even though it is of a so-called chromium- free surface-treated steel sheet, the steel sheet is more conductive and more highly resistant to corrosion than conventional chromium-free steel sheets, the likelihood of water pollution is reduced, and the steel sheet can be used in various applications as a replacement for conventional chromate-treated steel sheets.
La présente invention a pour objet une tôle d'acier comportant un placage à base de zinc traité en surface, qui comprend une couche de placage à base de zinc, une couche intermédiaire conductrice exempte de chrome et une couche de résine organique, les trois couches étant superposées dans l'ordre susmentionné. Même s'il s'agit d'une tôle d'acier traitée en surface et exempte de chrome, cette tôle est plus conductrice et beaucoup plus résistante à la corrosion que les tôles d'acier exemptes de chrome classiques. La probabilité d'une pollution de l'eau est réduite, et cette tôle peut être utilisée pour diverses applications en remplacement des tôles d'acier classiques traitées au chromate.
Ogata Hiroyuki
Tada Chiyoko
Umino Shigeru
Jfe Steel Corporation
Kawasaki Steel Corporation
Moffat & Co.
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