The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2011
Filed:
Apr. 25, 2006
Kazutoshi Sakakibara, Aichi-gun, JP;
Kazutoshi Sakakibara, Aichi-gun, JP;
Togo Seisakusyo Corporation, Aichi-ken, JP;
Abstract
The present invention relates to a rust-preventive metallic component part in which a steel wire to which wire-drawing processing is performed is adapted into a substrate and which comprises a rust-preventive coating film being free from chromium on a surface of the substrate, and to a manufacturing method for the same; and its object is to provide a rust-preventive metallic component part whose rust-preventive coating film exhibits such good adhesiveness to substrate that it is not come off by elastic deformations in service, by sliding contacts at the time of transportation, and the like, and to provide a manufacturing method for the same. A rust-preventive metallic component part according to the present invention is characterized in that: it comprises a first coating film, which is formed on a surface of a substrate and which comprises an inorganic-compound-containing coating film being free from chromium; and a residual proportion of zinc phosphate coating film or manganese phosphate coating film, which has been formed on the surface of the substrate at the time of wire-drawing processing, is less than 25% of a surface area of the substrate. Consequently, the first coating film is coated after removing the zinc phosphate coating film or manganese phosphate coating film, which covers the surface of the substrate, with a strongly-alkaline degreasing liquid.