Hot rolling method
US10870138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2013 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jul 13, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2275/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for the regulation of at least one of the parameters (α) of a hot rolling process of a semi-finished metal product in at least one rolling mill stand having at least two work rolls is provided. The regulation method includes calculating a forward slip ratio (FWS) with the following equation: where vexit is the speed of the semi-finished product at the exit of the respective stand and vstand is the linear velocity of the work rolls; calculating an estimated coefficient of friction (μreal) as a function of a measured value of the screwdown force (F) of the work rolls in the stand and of the forward slip ratio (FWS); and regulating at least one of the parameters (α) based on the calculated estimated coefficient of friction (μreal).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.