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:
Mar. 12, 1985
Filed:
Jun. 27, 1983
Kanichi Kishikawa, Kitakyushu, JP;
Taneharu Nishino, Kitakyushu, JP;
Seiichi Nagasoe, Kitakyushu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
The rail is rolled by the steps of breakdown rolling, reforming rolling, first and second universal rolling, head-wheel rolling and base-wheel rolling in that order. The reforming rolling is performed using a pair of horizontal rolls provided with a reforming pass and a head-wheel pass and a vertical roll adapted to reduce the base of the rail, with the paired horizontal rolls, together with said vertical roll, shifted and set in such a position where the reforming pass matches the pass line of the first universal rolling pass. The head-wheel rolling is performed using the same paired horizontal rolls and a vertical roll adapted to reduce the head of the rail, with the paired horizontal rolls, together with said vertical roll, shifted and set in such a position where the head-wheel pass matches the pass line of the second universal rolling pass. The rail rolling apparatus comprises a breakdown stand, a sizing head-wheel stand having a pair of horizontal rolls provided with a reforming pass and a head-wheel pass, a vertical roll adapted to reduce the base of the rail, a vertical roll adapted to reduce the head of the rail, and mechanism for shifting the rolls, a universal stand, and a base-wheel rolling stand.