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:
Apr. 19, 1988
Filed:
Apr. 27, 1987
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus for improving the surface quality of a rotary machine part in which a high density beam such as laser beam or electron beam is condensed with collimation to a parallelepiped spatial intensity distribution, the intensity being controllable. The beam is directed to a predetermined surface area of the rotary machine part rotating at a constant angular velocity. A solidified layer formed by rapid solidification of a surface portion of the rotary machine part, which is melted by irradiation by the condensed beam, and a transformation-hardened layer formed below the solidified layer are uniform in thickness, and the transformation-hardened layer is uniformly formed throughout the periphery of the rotary machine part, and thus no cracking and/or pitting occurs.