2results about How to "Increase rolling speed" patented technology

This application relates to the field of cold rolling technology for metal sheet and strip, and discloses a cooling control method for a rapid warm rolling process in a rolling mill, as well as the resulting sheet and strip. The control method includes: acquiring the strip to be rolled and heating it to a set temperature; acquiring the strip thickness and total reduction rate, and setting the total number of rolling passes based on the thickness and total reduction rate; acquiring the rolling speed, and setting the inlet emulsion flow rate for each rolling pass based on the rolling speed; and setting the outlet emulsion flow rate for each rolling pass based on the rolling speed and the inlet emulsion flow rate. After the set temperature, total number of rolling passes, inlet emulsion flow rate, and outlet emulsion flow rate are all set, strip rolling begins. This application precisely controls the emulsion spray flow rate and determines the optimal inlet and outlet flow rate ratio at the mill inlet and outlet to avoid sheet shape quality problems caused by excessively high temperatures.

This invention discloses a skew rolling assembly suitable for large-size high-temperature alloy bars, comprising four rolls of identical shape and size, all of which are active rolls. During production, all four rolls promote the forward flow of the billet metal along the rolling direction, avoiding the jamming phenomenon caused by the guide plate obstructing the forward flow of the billet in the existing rolling process. Furthermore, the four rolls increase the rolling speed and the degree of deformation. This invention also provides a skew rolling method suitable for large-size high-temperature alloy bars. Utilizing the aforementioned skew rolling assembly, the four rotating active rolls are used for skew rolling of the bars, increasing the rolling speed and avoiding the jamming problem that easily occurs in existing two-roll and guide plate rolling processes. This ensures forming quality, improves rolling production efficiency, and increases the degree of deformation.