Disclosed is a method of emulsion concentration optimization for a cold continuous rolling mill set for achieving vibration suppression, the method comprising: defining the process parameters involved in the process of emulsion concentration optimization; setting an initial set value of an emulsion concentration comprehensive optimization target function for a cold continuous rolling mill set for achieving vibration suppression; calculating a bite angle of each stand; calculating a vibration determination index reference value of each stand; setting the emulsion concentration of each stand; calculating the outlet temperature of a strip steel of each stand; calculating the dynamic viscosity of an emulsion in a roll gap of each stand; calculating the oil film thickness in the roll gap of each stand; calculating the emulsion concentration comprehensive optimization target function; determining whether the inequation F(X)<F.sub.0 is established; determining whether the concentration of the emulsion exceeds a feasible region range, and outputting the optimal emulsion concentration set value.

A lamination lubricant dispensing unit for lubricating a working roller of a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film. The lubricant dispensing unit has a dispensing unit body defining a laterally extending wall; first and second side walls extending forwardly from the laterally extending wall; and a ledge connected to lower ends of the walls. The ledge extends forwardly from the laterally extending wall and extending between the side walls. The ledge and the walls define a recess having an opened side. The ledge has a front edge for abutting a lamination surface of the working roller. At least a portion of the ledge is an angled portion extending upward and rearward from the front edge toward the laterally extending wall. The dispensing unit body defines at least one lubricant passage having an outlet defined in the laterally extending wall.

A working roller for a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film is disclosed. The working roller has a cylindrical center portion defining a central axis, the center portion having an outer surface defining a lamination surface; and first and second frustoconical portions extending from first and second ends of the center portion respectively. When the central axis is straight, an angle between the outer surface of the center portion and an outer surface of each of the first and second frustoconical portions is less than 0.05 degrees. A width of the center portion is greater than a width of each of the first and second frustoconical portions. The width of the center portion is less than a sum of the widths of the first and second portions. A rolling mill having two such working rollers is also disclosed. A laminated sheet of alkali metal or alloy thereof obtained by the working roller of the present technology is also disclosed.

A working roller for a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film is disclosed. The working roller has a cylindrical center portion defining a central axis, the center portion having an outer surface defining a lamination surface; and first and second frustoconical portions extending from first and second ends of the center portion respectively. When the central axis is straight, an angle between the outer surface of the center portion and an outer surface of each of the first and second frustoconical portions is less than 0.05 degrees. A width of the center portion is greater than a width of each of the first and second frustoconical portions. The width of the center portion is less than a sum of the widths of the first and second portions. A rolling mill having two such working rollers is also disclosed.

The invention relates to a method and a regulating device for regulating a rolling process, wherein a rolling material is rolled in a rolling gap between two working rollers of a rolling stand. According to the invention, a desired forward slip value (f.sub.s) for a forward slip (f) of the rolling material is specified, and an actual forward slip value (f.sub.M) of the forward slip (f) of the rolling material is ascertained. The forward slip (f) of the rolling material is regulated to the desired forward slip value (f.sub.s) in that a lubricant rate (u.sub.R) of a lubricant is applied to the rolling material and/or at least one working roller depending on the actual forward slip value (f.sub.M) and the desired forward slip value (f.sub.s).

A cooling-water injection control device and a cooling-water injection control method for a rolling mill suppress influence by change in flow rate characteristics of water injection headers. The cooling-water injection control device for a rolling mill includes a water injection amount control unit. When a plurality of water injection headers are controlled to make temperature of a material to be rolled on a delivery side of a rolling mill coincident with a target value, in a case where a flow rate of any one of the plurality of water injection headers is less than a transient flow rate between a minimum flow rate and a maximum flow rate, the water injection amount control unit controls a flow rate of any one of the plurality of water injection headers based on priority.

A modular spray bar system (1) for selectively cooling and/or lubricating rolls, in particular roll barrels, in a rolling mill stand includes different types of blocks and a bracing element by which a spray bar (47) formed from the different blocks can be braced.

Disclosed is a rolling mill including: a stand; two working rolls, two support rolls, and two intermediate rolls; lateral support rolls, able to support the working rolls laterally, each lateral support roll being borne by a support arm, mounted with the ability to pivot; load spreading beams and a mechanism for applying a preload on each support arm, including at least one preload actuating cylinder; one or more spray nozzles for a lubricating/cooling fluid, and wherein at least one of the nozzles, is carried on one of the support arms and in which the fluid supply circuit for the at least one nozzle comprises a device for connection/disconnection with the support arm with actuator. The actuator is an actuator distinct from the actuating cylinder of the mechanism for applying a preload.

A lamination lubricant dispensing unit for lubricating a working roller of a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film. The lubricant dispensing unit has a dispensing unit body defining a laterally extending wall; first and second side walls extending forwardly from the laterally extending wall; and a ledge connected to lower ends of the walls. The ledge extends forwardly from the laterally extending wall and extending between the side walls. The ledge and the walls define a recess having an opened side. The ledge has a front edge for abutting a lamination surface of the working roller. At least a portion of the ledge is an angled portion extending upward and rearward from the front edge toward the laterally extending wall. The dispensing unit body defines at least one lubricant passage having an outlet defined in the laterally extending wall.

This manufacturing method for a slab is a method for manufacturing a slab by a continuous casting equipment including a twin-drum type continuous casting apparatus, a cooling apparatus, an in-line mill, and a coiling apparatus. The method includes calculating a friction coefficient from measured values of a rolling load and a forward slip when the slab is rolled, by use of a rolling analysis model, and controlling a lubrication condition during rolling of the slab so that the friction coefficient falls within a predetermined range, wherein, when the friction coefficient is calculated from the measured values of the rolling load and the forward slip by use of an Orowan theory and a deformation resistance model formula based on a Shida's approximate formula as the rolling analysis model, the predetermined range is 0.15 or more and 0.25 or less.