LIQUID NITROGEN-BASED METAL SHEET ROLLING PROCESS AND DEVICE

A liquid nitrogen-based metal sheet rolling device, comprising two rolls (2) and a sheet strip (5). The two rolls are located on the same vertical plane, and the rotation directions of the two rolls are opposite. The sheet strip is horizontally located between the two rolls. Thermal insulation pipelines (3) are provided at an outlet of a rolling mill at two sides of the rolls. The thermal insulation pipelines are each mounted thereon with a flow regulating valve (6). One end of the thermal insulation pipelines is also fixedly mounted with a nozzle (1), and the nozzles are located at one end of the thermal insulation pipelines near the rolls. And a liquid nitrogen-based metal sheet rolling process. Liquid nitrogen may be drained out after cooling, cleaning and process lubrication without harming the environment, and may increase the rolling speed and extend the service life of the rolls, and the surface quality of produced sheet strips is constantly consistent, eliminating thermal scratches ...