5results about How to "Increase rolling speed" patented technology

The utility model relates to the field of mechanical production equipment, and discloses a hot-rolled ribbed steel bar rapid rolling device which comprises a workbench, a motor is fixedly connected in the workbench, the output end of the motor is fixedly connected with a first toothed concave wheel, the interior of the workbench is rotationally connected with a toothed belt, and the toothed belt is fixedly connected with a second toothed concave wheel. A toothed belt is arranged in the working table, the toothed belt is meshed with a toothed concave wheel I, a toothed concave wheel II is rotationally connected to the interior of the working table, the toothed concave wheel II is meshed with the toothed belt, a rotating shaft is fixedly connected to the interior of the toothed concave wheel II, and a gear II is fixedly connected to the outer wall of the rotating shaft. According to the utility model, firstly, the motor drives the toothed concave wheel to rotate, so that the problem that the stress generated by the reinforcing steel bar is not uniformly distributed due to inaccurate precision when the reinforcing steel bar is rolled is solved, the reinforcing steel bar is stably and quickly rolled, and the rolling speed can be increased while the uniform quality of the reinforcing steel bar can be ensured; and the production efficiency and the product quality are improved.

The invention relates to the technical field of preparation of high-precision CTP printing plate bases, in particular to a cold rolling method of a high-precision CTP printing plate base, which is characterized in that cold rolling reduction pass distribution is as follows: the thickness of 2.5 mm is rolled to the thickness of 1.1 mm in the first pass, the thickness of 1.1 mm is rolled to the thickness of 0.50 mm in the second pass, and the thickness of 0.50 mm is rolled to the thickness of (0.25-0.28) mm in the third pass for cold rolling. The method has the advantages of effectively reducing cold rolling passes, improving the cold rolling pass machining rate, improving the cold rolling production efficiency, reducing the production cost and the like.

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.

The utility model relates to the technical field of domestic wastewater treatment, discloses a domestic wastewater treatment and disinfection device, and solves the problem that impurities in a filter screen of an existing disinfection device are relatively tedious to remove. According to the domestic wastewater treatment and disinfection device, through a mounting plate, a filter screen, a magnetic plate, an external rope and a collecting plate, in the working process, the filter screen continuously filters domestic wastewater, impurities in the domestic wastewater can be left on the filter screen, when the impurities on the filter screen are too many, the magnetic plate is taken out from an embedding groove, and the mounting plate can rotate around one side of a hinge; and meanwhile, a motor is started to drive a draught fan to rotate, wind power generated by the draught fan is blown to the mounting plate, the rolling speed of the impurities on the mounting plate is increased, and the overall working efficiency is improved.

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.