Method for manufacturing hot-rolled steel sheet, steel sheet cutting location setting device, steel sheet cutting location setting method, and steel sheet manufacturing method
US10730088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2015 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jul 15, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2263/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a hot-rolled steel sheet having a large thickness and a large width, a larger sheet width and a lower temperature can stably be cut at a cutting load equal to that of a conventional steel sheet having a usual sheet thickness, a usual sheet width and a usual temperature. In a rough rolling step, the steel sheet is formed so that the shortest length L (mm) from a concave portion bottom to a convex portion top of the fishtail shape satisfies Equation (1) mentioned below, and an intermediate portion between the concave portion bottom and the convex portion top, defined as a desired cutting location, is cut: (2X+30)≤L≤300 (1), in which X is a maximum deviation (mm) of the cutting location of a crop cutting machine and 0≤X≤90.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.