A tempering-free wear-resistant hot rolled strip, includes components in percentage by weight: 0.08-0.22% of C, 0.1-0.55% of Si, 0.8-1.5% of Mn, less than or equal to 0.012% of P, less than or equal to 0.005% of S, 0.01-0.055% of Als, 0.005-0.019% of Ti, and less than or equal to 0.007% of N. A method for producing the same includes: desulfurizing molten iron, smelting desulfurized molten iron, and casting into a blank; heating the casting blank; performing rough rolling; performing finish rolling; performing rapid cooling; performing coiling; and performing conventional temper rolling. According to the present disclosure, on the premise that the tensile strength of a steel plate is greater than or equal to 1100 MPa and the elongation is greater than or equal to 12%, the steel plate has a surface Brinell hardness of 330-390 and a core hardness that is 95% or above of the surface hardness.

A method for operating a storage device for two rolls in a roll stand for rolling metal. The storage device is component part of the roll stand or can be positioned relative to the roll stand so that the rolls can be transferred from the roll stand into the storage device or vice versa. A measuring system is provided which detects the temperatures and/or the diameters of the rolls individually and independently of one another, at least at predefined detection positions, as viewed in the direction of the roll axes. After transmission to an automation unit that controls the roll stand, the unit can adapt a roll model, by means of which it repeatedly determines the temperatures and/or the diameters of the rolls, at predefined determination positions, in the direction of the roll axes, using operating data of the roll stand for the rolls of the same type.

A storage device for two rolls in a roll stand is a component part of the roll stand or can be positioned relative to the roll stand in such a way that the rolls can be transferred from the roll stand into the storage device or vice versa. At least one measuring system is provided, by means of which the temperatures and/or the diameters of the rolls can be detected individually and independently of one another, at least at predefined detection positions, as viewed in the direction of the roll axes. After transmission to an automation unit that controls the roll stand, the unit can adapt a roll model, by means of which it repeatedly determines the temperatures and/or the diameters of the rolls, at predefined determination positions, in the direction of the roll axes, using operating data of the roll stand for the rolls of the same type.

A device for cooling a roll for rolling materials, including a cooling shell opposite a sub-region of the roll surface circumference, for forming a cooling gap, through which a cooling fluid can flow, between the sub-region and the cooling shell. The device further includes a first lever which can be pivoted about a suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to a first end region of the cooling shell, when viewed in the circumferential direction of the roll, and a second lever which can be pivoted about another suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to the second end region of the cooling shell, when viewed in the circumferential direction of the roll, such that the cooling gap can be selectively reduced or increased by pivoting the levers.

An electrode sheet manufacturing device includes a pair of rolls that press an electrode active material layer formed on an electrode sheet, a press pressure adjusting mechanism that adjusts a press pressure of the pair of rolls, a temperature sensor that detects a surface temperature of at least one of the pair of rolls, and a controller. The controller is configured to adjust the press pressure, based on the surface temperature of the at least one of the pair of rolls detected by the temperature sensor.

The application is directed to a device (1, 1) for cooling a roll (2), in particular a working roll (2) for rolling rolling stock (3), wherein the device comprises a cooling shell (50, 60) which lies opposite at least one part region of the circumference of the roll surface for forming a cooling gap (5) between the part region of the roll surface and the cooling shell (50, 60), through which cooling gap (5) cooling fluid can flow, and a lever (40, 44) which can be pivoted about a suspension point (8, 48), can be pivoted in the direction of the roll surface and is connected rotatably to a first half (51, 61) of the cooling shell (50, 60) as viewed in the circumferential direction (U) of the roll (2), wherein the cooling gap (5) can optionally be reduced in size or enlarged by pivoting of the lever (40, 44). Furthermore, the device according to the invention comprises a variable-length linear guide (0, 99) which can be pivoted about a further suspension point (88, 48) and is connected rotatably to the second half (59, 69) of the cooling shell (50, 60) as viewed in the circumferential direction (U) of the roll (2).

There are provided a method for producing a magnesium alloy sheet having good press formability and a magnesium alloy coil stock obtained by coiling the magnesium alloy sheet. After a raw material sheet 1 composed of a magnesium alloy is preheated to 280 C. or less, the heated raw material sheet 1 is rolled with a reduction roll 3 and the obtained long rolled sheet is coiled. The surface temperature of the reduction roll 3 is set to be 230 C. or more and 290 C. or less. The preheating, rolling, and coiling are repeatedly performed in a continuous manner. By setting both the temperatures of the raw material sheet 1 and reduction roll 3 to be certain temperatures, the rolling property of the raw material sheet can be improved and the raw material sheet can be properly rolled in a continuous manner. In addition, a variation in temperature in the width direction of the reduction roll can be suppressed and uniform rolling can be performed, resulting in the production of a long magnesium alloy sheet. In this magnesium alloy sheet, working strain is sufficiently introduced by rolling and an increase in the size of crystal grains is suppressed. Thus, the magnesium alloy sheet has good press formability. Furthermore, a coil stock in which telescoping is not easily caused and that has good appearance is obtained.

The present application relates to a stand base (10) for two or more stands (14) of a rolling mill arranged one behind the other in a rolling direction (W) of a material to be rolled, the stand base (10) comprising two or more receiving modules (12) arranged one behind the other, which are fastened to a common lower base frame (32) and a common upper cover frame (34).