Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

An emulsion flow optimization method suitable for a cold continuous rolling mill that aims to achieve vibration suppression. The method aims to suppress vibrations by an oil film thickness model and a friction coefficient model. An optimum set value of the emulsion flow rate for each rolling stand that aims to achieve vibration suppression is optimized on the basis of an over-lubrication film thickness critical value and an under-lubrication film thickness critical value that are proposed. The method greatly reduces the incidence of rolling mill vibration defects, improves production efficiency and product quality, treats rolling mill vibration defects, and improves the surface quality and rolling process stability of a finished strip of a cold continuous rolling mill.

An apparatus and method for rolling aluminum sheet uses a texture roll to roll the sheet while is it hot and has reduced yield strength. The texture rolling may be used to remediate defects in the sheet at a variety of stages in rolling, and may facilitate subsequent rolling stages.

Provided herein are systems and methods for containing a viscous material, such as a coolant, on a roll and/or a roll processed engineering material (e.g., a metal strip). In particular, a viscous material containment system can include a movable seal and a gas delivery device. A method for cooling a roll can include applying a viscous material, such as a coolant, to the roll and containing the viscous material on the roll using the viscous material containment system. In some cases, the viscous material containment system can be used to facilitate removal of the viscous material from the roll and/or the roll processed engineering material.

The present invention relates to a rolling facility and a rolling method. According to the present invention, the rolling facility comprises: a roughing mill having a roughing mill roll for pressing a material to be transferred; a finishing mill having a finishing mill roll, which is provided on a material transfer path, and pressing the material having passed through the roughing mill; a wiper device provided at a feed-in side of the finishing mill roll, polishing the surface of the finishing mill roll, and supplying cooling fluid to the material; and a cooling device provided on the material transfer path and cooling the material having passed through the finishing mill, wherein the wiper device can include a plurality of cooling header units for supplying the cooling fluid to the material at different positions.

Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

The invention relates to a device for adjusting a roll in a roll housing 210 of a roll stand. The device comprises a motor for providing an adjusting force for the roll; a drive shaft 120 that can be actuated in a rotatory manner by the motor; and a pressure spindle for transmitting the adjusting force of the motor to the roll. In order to do away with the upstream worm gear used in the prior art, according to the invention, the motor is designed in the form of a hydro- or torque-motor, the pressure spindle 130 is provided with an axially oriented cylindrical receiving space on the motor-side end face 132, the drive shaft 120 can project into the receiving area of the pressure spindle, and the pressure spindle 130 and the drive shaft 120 are coupled to one another in a rotatory manner inside the receiving area.

Systems, methods, and compositions for improved warm-forming of light metal alloys, such as aluminum alloys, magnesium alloys, or titanium alloys, are disclosed. The systems and methods relate to pulse thermal processing, engineered plastic deformation, and micro-aging processes, as well as to the application of multi-functional lubricants. The disclosed multifunctional lubricant compositions provide a number of advantages when used in warm-forming processes, and in one embodiment, include organo-titanates and magnesium hydroxide, and in other embodiments an organo-titanate, magnesium hydroxide and boron nitride.

A method for producing an aluminum bar includes at least one machining step in which an aluminum bar-shaped work is machined while supplying a machining fluid containing oil to produce a machined aluminum bar-work, and a cleaning step in which the machined aluminum bar-shaped work is cleaned using a cleaning fluid to produce a cleaned machined aluminum bar-shaped work. The cleaning step is performed so that the oil contained in the machining fluid remains on a surface of the cleaned machined aluminum bar-shaped work in a range of 5 g/cm.sup.2 to 20 g/cm.sup.2.

An apparatus and method for applying an EDT texture to an aluminum sheet has a rolling stand with at least one EDT surfaced roll capable of rolling the sheet at reductions<1%. The rolling is conducted with residual or no lubrication and imparts a texture on the scale of about 1 m to the surface of the sheet at low roll force.