Systems and methods for measuring the thermal crown of rolls in-situ (e.g., at high temperature) either inside or outside the rolling mill can include sensors that measure propagation times of mechanical waves through the rolls. In some embodiments, one or more sensors are used to measure the propagation times of ultrasonic waves traveling inside the roll and normal to the roll's axis. These measurements can be taken when the roll is still hot and can be used to determine in real-time the thermal expansion at various points along the roll.

Systems and methods for measuring the thermal crown of rolls in-situ (e.g., at high temperature) either inside or outside the rolling mill can include sensors that measure propagation times of mechanical waves through the rolls. In some embodiments, one or more sensors are used to measure the propagation times of ultrasonic waves traveling inside the roll and normal to the roll's axis. These measurements can be taken when the roll is still hot and can be used to determine in real-time the thermal expansion at various points along the roll.

Systems and methods for measuring the thermal crown of rolls in-situ (e.g., at high temperature) either inside or outside the rolling mill can include sensors that measure propagation times of mechanical waves through the rolls. In some embodiments, one or more sensors are used to measure the propagation times of ultrasonic waves traveling inside the roll and normal to the roll's axis. These measurements can be taken when the roll is still hot and can be used to determine in real-time the thermal expansion at various points along the roll.

A system, method, and device for measuring camber in a film is disclosed. The system generally includes: a flat surface with a longitudinal axis, at least three sensors spaced apart along the longitudinal axis, and a computing device operatively connected to each sensor. When the film is positioned in relationship to the sensors, the computing device computes the camber of the film. The flat surface may be a table with a film holder. At least one of the sensors may be a LED sensor. The computing device may have an output means, such as a monitor, a printer, or both. The computing device defines a straight line between the first and third sensor based on the position of the film, and the camber is a deviation of the film, measured by the second sensor, from the straight line.

A system, method, and device for measuring camber in a film is disclosed. The system generally includes: a flat surface with a longitudinal axis, at least three sensors spaced apart along the longitudinal axis, and a computing device operatively connected to each sensor. When the film is positioned in relationship to the sensors, the computing device computes the camber of the film. The flat surface may be a table with a film holder. At least one of the sensors may be a LED sensor. The computing device may have an output means, such as a monitor, a printer, or both. The computing device defines a straight line between the first and third sensor based on the position of the film, and the camber is a deviation of the film, measured by the second sensor, from the straight line.

A device for a rolling mill with an adjustable offset distance in serpentine rolling and a method thereof are provided. The device includes a frame, offset moving components, upper and lower work rolls, telescopic components, lifting components, and a monitoring component. The offset moving components are connected to a middle of the frame, and the offset moving components are connected to the lower work roll bearing seats, and the lower work roll bearing seats are connected to the lower work roll; the offset moving components are fixedly connected to the telescopic components; a top of the frame is fixedly connected to the lifting components, and the lifting components are fixedly connected to upper work roll bearing seats, and the upper work roll bearing seats are connected to the upper work roll, and the monitoring component is provided at a rolling exit of the frame.

A device for a rolling mill with an adjustable offset distance in serpentine rolling and a method thereof are provided. The device includes a frame, offset moving components, upper and lower work rolls, telescopic components, lifting components, and a monitoring component. The offset moving components are connected to a middle of the frame, and the offset moving components are connected to the lower work roll bearing seats, and the lower work roll bearing seats are connected to the lower work roll; the offset moving components are fixedly connected to the telescopic components; a top of the frame is fixedly connected to the lifting components, and the lifting components are fixedly connected to upper work roll bearing seats, and the upper work roll bearing seats are connected to the upper work roll, and the monitoring component is provided at a rolling exit of the frame.