WORK ROLL BALANCE FORCE SETTING METHOD AND ROLLING MILL RUNNING METHOD, ROLLING MILL RUNNING SWITCHING METHOD, AND ROLLING MILL

WIPO Patent Application WO/2023/073998

A1

In a work roll balance force setting method of a rolling mill, a kiss roll load Pk, a rolling load Pr, and rolling torque Tr of work rolls 610 and 611 in relation to a work roll angle θx of the tip position of a rolled material 5 between the start of biting of the rolled material 5 and completion of the biting are determined by using a mill longitudinal rigidity coefficient K and a rolling condition. Thereafter, the traction coefficient μrt between the work rolls 610 and 611 and intermediate rolls 620 and 621, and a maximum value μrtmax of μrt in relation to θx in a state in which hypothetical work roll balance force Pb is applied are determined from a sum P of Pk, Pr, and Pb, and Tr between the start of biting of the rolled material 5 and completion of the biting. Thereafter, a tolerated value μrtcr of μrt is compared with μrtmax, and work roll balance force at the start of biting of the rolled material 5 is reset to a value which is equal to or larger than a value that is required when μrt assumes the maximum value μrtmax, and equal to or smaller than a value that is a limit based on a constraint in terms of strength of the rolling mill, in a case where μrtcr is equal to or larger than μrtmax.

HORII KENJI (JP)
SUGIMOTO TATSUNORI (JP)
MURATO SHUNSUKE (JP)
HACKL MANFRED (AT)
SEILINGER ALOIS (AT)
PICHLER LUKAS (AT)

PCT/JP2021/040290

May 04, 2023

November 01, 2021

Click for automatic bibliography generation  

PRIMETALS TECH JAPAN LTD (JP)
PRIMETALS TECHNOLOGIES AUSTRIA GMBH (AT)

B21B35/00; B21B39/06

JPS59185508A	1984-10-22
JPS6117305A	1986-01-25
JPS59127912A	1984-07-23
JP3067589B2	2000-07-17

KAWASAKI STEEL TECHNICAL REPORT, vol. 33, no. 1, 2001, pages 37 - 42

KAICHI IP (JP)

View/Download PDF      PDF Help

Previous Patent: INFORMATION PROCESSING DEVICE

Next Patent: ABSORBENT ARTICLE AND ABSORBENT ARTICLE PACKAGE