3 results about "Slip factor" patented technology

The present invention discloses a method for optimizing the setting of the concentration and temperature of an emulsion of a six-stand cold rolling mill. The present invention fully considers the problem of slippage during the rolling process of ultra-high-strength steel, and combines the characteristics of the three oil tanks of the emulsion system of the unit participating in lubrication, that is, 1-3 frames share one oil tank, 4 frames have a separate oil tank, and 5 frames and 6 frames share one oil tank; the present invention fully considers the influence of the concentration of the emulsion and the initial temperature on the stable rolling of the strip during the cold rolling process, and takes the slip factor parameter as a constraint condition, and proposes a method for optimizing the setting of the concentration and temperature of the emulsion of a six-stand cold rolling mill with the oil film thickness control on the upper and lower surfaces of the strip as the target, thereby determining the optimal concentration and temperature of the emulsion, and improving the actual production efficiency and quality. Through the application of the present invention, the concentration and temperature optimization of the emulsion under the condition of multiple oil tanks are realized, the slippage phenomenon is reduced, the stability of the unit is guaranteed, the quality of the strip shape is improved, and certain economic benefits are brought.

The application discloses a closed impeller and a manufacturing method thereof. The closed impeller comprises an impeller body and secondary splitter blades. The impeller body comprises a disc and a cover arranged oppositely. A plurality of main blades and a plurality of primary splitter blades are connected between the disc and the cover. An airflow channel is formed between the disc, the cover, the main blades and the primary splitter blades. The inner walls on both sides of the airflow channel define a pressure surface and a suction surface respectively. The airflow channel forms an outlet at the side wall of the impeller body. The secondary splitter blades are arranged obliquely at the outlet of the airflow channel. Along the width direction of the airflow channel, the secondary splitter blades are closer to the suction surface than the center line of the airflow channel. By arranging the secondary splitter blades, the secondary flow and the wake vortex at the outlet of the impeller are directly intervened and weakened, so that the flow loss is reduced, the slip factor is improved, and the efficiency and overall working performance of the impeller are improved.

The invention discloses an optimization method, device, equipment and medium for a rolling process of a tandem cold mill, and the optimization method comprises the following steps: determining a scratch defect control function and a plate shape distribution function by determining to-be-verified control parameters conforming to rolling force, a scratch index, a slip factor, rolling power and a total emulsion flow threshold value; determining a to-be-verified control function of the to-be-set unit; and under the condition that the to-be-verified control function meets the Powell condition, the to-be-verified control parameter is determined as a target control parameter, and the rolling process and the lubricating process of the to-be-set unit are set according to the target control parameter. Therefore, the target control parameters can be accurately set in the cold rolling production, so that the rolling process and the lubricating process are optimized, the outlet strip has an excellent outlet plate shape, a rolling mill works in a relatively stable state in the rolling process, and the quality and the production efficiency of the strip are improved.