US 12,343,776 B2
Hot-rolling stand for a hot-rolling mill and for producing a flat metal product, hot-rolling mill and method for operating a hot-rolling mill
Jens Kreikemeier, Lennestadt (DE); Gokhan Erarslan, Düsseldorf (DE); Stephan Fischer, Hilchenbach (DE); and Joachim Hafer, Siegen (DE)
Assigned to SMS group GmbH, Düsseldorf (DE)
Appl. No. 17/784,354
Filed by SMS group GmbH, Düsseldorf (DE)
PCT Filed Dec. 11, 2020, PCT No. PCT/EP2020/085853
§ 371(c)(1), (2) Date Jun. 10, 2022,
PCT Pub. No. WO2021/116460, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 10 2019 219 318.8 (DE), filed on Dec. 11, 2019; application No. 10 2020 201 789.1 (DE), filed on Feb. 13, 2020; and application No. 10 2020 206 174.2 (DE), filed on May 15, 2020.
Prior Publication US 2023/0060110 A1, Feb. 23, 2023
Int. Cl. B21B 13/00 (2006.01); B21B 31/08 (2006.01); B21B 31/20 (2006.01); B21B 31/30 (2006.01); B21B 31/32 (2006.01)
CPC B21B 13/001 (2013.01) [B21B 31/08 (2013.01); B21B 31/203 (2013.01); B21B 31/30 (2013.01); B21B 31/32 (2013.01); B21B 2203/36 (2013.01); B21B 2265/14 (2013.01); B21B 2267/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hot-rolling stand (10) for a hot-rolling mill (1) and for producing a flat metal product, comprising:
a pair of work rolls (17), including
an upper work roll (19; 21) having an upper coupling sleeve (40; 41), and
a lower work roll (18; 20) having a lower coupling sleeve (38; 39);
an adjusting device (12) for accommodating the pair of work rolls (17) and for positioning the upper work roll (19; 21) and the lower work roll (18, 20) of the pair of work rolls (17) in relation to one another to define a roll gap;
a drive motor (33);
a pinion gearbox (35) having an input connected to the drive motor (33);
an upper spindle (37) connecting an upper output of the pinion gearbox (35) to the upper work roll (19; 21), the upper spindle (37) having an upper spindle sleeve (43) that accommodates the upper coupling sleeve (40; 41);
a lower spindle (36) connecting a lower output of the pinion gearbox (35) to the lower work roll (18; 20), the lower spindle (36) having a lower spindle sleeve (42) that accommodates the lower coupling sleeve (38; 39),
wherein the adjusting device (12) is designed to interchangeably accommodate, in the pair of work rolls (17), different roll diameter ranges of mutually complementary work rolls (18, 19; 20, 21),
wherein the upper spindle (37) and the lower spindle (36) are designed to support a deflection that results from the different roll diameter ranges of the mutually complementary work rolls (18, 19; 20, 21),
wherein a deviation between the different roll diameter ranges amounts to ≥6%, and
wherein a pass line variation when using the different roll diameter ranges amounts to less than +/−20 mm.