公开(公告)号：US12233443B2

公开(公告)日：2025-02-25

申请号：US18291192

申请日：2022-07-21

Applicant: Primetals Technologies Austria GmbH

Inventor： Manfred Hackl ,  Kenji Horii ,  Alois Seilinger ,  Tatsunori Sugimoto ,  Roman Winkler

IPC: B21B1/46 ,  B21B13/02 ,  B21B15/00 ,  B21B37/42 ,  B21B37/44 ,  B22D11/12 ,  B22D11/128 ,  B21B45/02

Abstract: A six-high rolling (also known as sexto) mill stand that is suited for hot rolling an intermediate strip into a thin strip that is less than 0.8 mm thick. A combined casting and rolling installation that includes the six-high rolling mill stand allowing for hot rolling in long uninterrupted sequences, without any change of the work rolls to obtain a strip with good geometry due to moderate rolling forces.

公开(公告)号：US20240416402A1

公开(公告)日：2024-12-19

申请号：US18704819

申请日：2021-11-01

Applicant: Primetals Technologies Austria GmbH

Inventor： Kenji Horii ,  Tatsunori Sugimoto ,  Shunsuke Murato ,  Manfred Hackl ,  Alois Seilinger ,  Lukas Pichler

IPC: B21B13/14 ,  B21B13/02 ,  B21B31/20 ,  B21B37/58

Abstract: Work roll balance force setting method of rolling mill. Determine kiss roll load Pk, rolling load Pr, and rolling torque Tr of work rolls relative to work roll angle θx of tip position of rolled material between start and completion of biting of rolled material using mill longitudinal rigidity coefficient K and rolling condition. Determine traction coefficient μrt between work and intermediate rolls, and maximum value μrtmax of μrt in relation to θx when hypothetical work roll balance force Pb is applied from sum P of Pk, Pr, and Pb, and Tr between start and completion of biting. Compare tolerated value μrter of μrt with μrtmax. Work roll balance force at start of biting reset to equal to or larger than required when μrt assumes maximum value μrtmax, and equal to or smaller than limit based on strength of rolling mill, when μrter is equal to or larger than μrtmax.