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. 16, 2013
Filed:
Jul. 27, 2011
Wataru Urushihara, Kobe, JP;
Mikako Takeda, Kobe, JP;
Katsushi Matsumoto, Kobe, JP;
Jun Katoh, Kobe, JP;
Wataru Urushihara, Kobe, JP;
Mikako Takeda, Kobe, JP;
Katsushi Matsumoto, Kobe, JP;
Jun Katoh, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
Provided is a joint product of a steel product and an aluminum material, the joint product being formed by joining the steel product having a sheet thickness tof 0.3 to 3.0 mm with the aluminum material having a sheet thickness tof 0.5 to 4.0 mm by spot welding, wherein a nugget area in a joint part is from 20×tto 100×tmm, an area of a portion where a thickness of an interface reaction layer is from 0.5 to 3 μm is 10×tmmor more, and a difference between the thickness of the interface reaction layer at a joint part center and the thickness of the interface reaction layer at a point distant from the joint part center by a distance of one-fourth of a joint diameter is 5 μm or less, and wherein the aluminum material is pure aluminum or an aluminum alloy material.