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:
Jul. 06, 2010
Filed:
Mar. 27, 2007
Hiroyuki Sugawara, Inuyama, JP;
Yasuo Ido, Inuyama, JP;
Yoshiaki Sato, Inuyama, JP;
Yukio Ogita, Inuyama, JP;
Shigemasa Hakakoshi, Inuyama, JP;
Hiroyuki Sugawara, Inuyama, JP;
Yasuo Ido, Inuyama, JP;
Yoshiaki Sato, Inuyama, JP;
Yukio Ogita, Inuyama, JP;
Shigemasa Hakakoshi, Inuyama, JP;
Daido Metal Co Ltd., Nagoya, JP;
Abstract
A manufacturing method of a clad material composed of a bronze alloy and a steel is provided, including: scattering a bronze alloy powder on a steel back metal; sintering the bronze alloy powder to obtain a bilayer material having a porous bronze alloy layer on the steel; dry-rolling and a sintering the bilayer material so that the bronze alloy layer has a porosity of 3% or less; and wet-rolling the bilayer material with supplying a rolling oil to surfaces of rolling rolls. The clad manufactured according to this method can be heat-treated without an disadvantage in a conventional wet-rolling that entering rolling oil vaporizes in the bronze alloy layer during the heat treatment to form new voids. Therefore, it becomes possible to make a bronze alloy layer high in density in small times of rolling, thus enabling an increase in production efficiency.