CN-117000777-B - Control method and device for applying plate coil box to silicon steel production

CN117000777BCN 117000777 BCN117000777 BCN 117000777BCN-117000777-B

Abstract

The application provides a control method and a control device for a plate coil box applied to silicon steel production, wherein the method comprises the steps of coiling a silicon steel intermediate billet, adjusting the advance rate of a first coil supporting roller, controlling the first coil supporting roller and a second coil supporting roller to descend to a first preset height, controlling the first coil supporting roller to ascend to a second preset height and controlling the second coil supporting roller to ascend to a third preset height when the head of the silicon steel intermediate billet exceeds the preset distance of the plate coil box and an uncoiling arm is lifted by 20 degrees relative to an uncoiling position, and controlling the first coil supporting roller and the second coil supporting roller to descend to the first preset height when a first rack of a finishing mill unit bites steel on the silicon steel intermediate billet. According to the scheme provided by the application, in the process of coiling and uncoiling the silicon steel intermediate billet through the plate coil box, the advance rate of the first coil supporting roller is adjusted, the heights of the first coil supporting roller and the second coil supporting roller and the opening degree of the stabilizer are adjusted, and the silicon steel intermediate billet can be ensured to be coiled and uncoiled smoothly.

Inventors

WANG HAISHEN
WANG NA
Ji fengchuan
WANG QIUNA
XIA YONGBIN
ZHANG WENJIAN
WANG LUN
ZHOU NA
WU QIAOLING

Assignees

北京首钢股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230822

Claims (6)

1. The control method for the plate coil box applied to the silicon steel production is characterized by comprising the following steps: Coiling a silicon steel intermediate billet through a plate coil box, and adjusting the advance rate of a first coil supporting roller according to the coil diameter of the silicon steel intermediate billet, wherein the advance rate is the ratio of the rotating speed difference of the first coil supporting roller and the bending roller to the rotating speed of the bending roller; After the coiling of the silicon steel intermediate billet is completed, controlling the first coil supporting roller and the second coil supporting roller to descend to a first preset height so that an uncoiling arm reaches an uncoiling position to uncoil; When the head of the silicon steel intermediate billet exceeds the preset distance of the plate coil box and the uncoiling arm is lifted by 20 degrees relative to the uncoiling position, controlling the first coil supporting roller to be lifted to a second preset height and controlling the second coil supporting roller to be lifted to a third preset height, wherein the second preset height is higher than the third preset height, and the third preset height is higher than the first preset height; When the first frame of the finishing mill group bites the silicon steel intermediate billet, the first coil supporting roller and the second coil supporting roller are controlled to descend to the first preset height so as to finish coiling and uncoiling the silicon steel intermediate billet; The method for adjusting the advance rate of the first coil supporting roller according to the coil diameter of the silicon steel intermediate billet comprises the following steps: if the coil diameter of the silicon steel intermediate billet is smaller than the preset coil diameter, adjusting the lead rate of the first coil supporting roller to be a first lead rate; If the coil diameter of the silicon steel intermediate billet is larger than or equal to a preset coil diameter, adjusting the lead rate of the first coil supporting roller to be a second lead rate; The preset coil diameter is 1000mm, the first advance rate can be 0.5%, and the calculation formula of the second advance rate is as follows: And s is the second advance rate of the first coil supporting roller, and L is the coil diameter of the silicon steel intermediate billet.
2. The method of claim 1, wherein the first predetermined height is-140 mm.
3. The method of claim 1, wherein the second predetermined height is-50 mm.
4. The method of claim 1, wherein the third predetermined height is-100 mm.
5. The method according to claim 1, wherein the method further comprises: when the tail of the silicon steel intermediate billet reaches a preset position, controlling the opening degree of the stabilizer to open a preset opening degree so as to finish coiling the silicon steel intermediate billet.
6. The utility model provides a control device that board roll up case was applied to silicon steel production, its characterized in that, the device includes: The adjusting unit is used for coiling the silicon steel intermediate billet through the plate coil box, and adjusting the advance rate of the first coil supporting roller according to the coil diameter of the silicon steel intermediate billet, wherein the advance rate is the ratio of the rotating speed difference of the first coil supporting roller and the bending roller to the rotating speed of the bending roller; The first control unit is used for controlling the first coil supporting roller and the second coil supporting roller to descend to a first preset height after the coiling of the silicon steel intermediate billet is completed, so that the coil opening arm reaches an uncoiling position to uncoil; The second control unit is used for controlling the first coil supporting roller to be lifted to a second preset height and controlling the second coil supporting roller to be lifted to a third preset height when the head of the silicon steel intermediate billet exceeds the preset distance of the coil box and the uncoiling arm is lifted by 20 degrees relative to the uncoiling position, wherein the second preset height is higher than the third preset height and the third preset height is higher than the first preset height; The third control unit is used for controlling the first coil supporting roller and the second coil supporting roller to descend to the first preset height when the first rack of the finishing mill group bites the silicon steel intermediate billet so as to finish coiling and uncoiling the silicon steel intermediate billet; The method for adjusting the advance rate of the first coil supporting roller according to the coil diameter of the silicon steel intermediate billet comprises the following steps: if the coil diameter of the silicon steel intermediate billet is smaller than the preset coil diameter, adjusting the lead rate of the first coil supporting roller to be a first lead rate; If the coil diameter of the silicon steel intermediate billet is larger than or equal to a preset coil diameter, adjusting the lead rate of the first coil supporting roller to be a second lead rate; The preset coil diameter is 1000mm, the first advance rate can be 0.5%, and the calculation formula of the second advance rate is as follows: And s is the second advance rate of the first coil supporting roller, and L is the coil diameter of the silicon steel intermediate billet.

Description

Control method and device for applying plate coil box to silicon steel production Technical Field The application relates to the technical field of steel rolling, in particular to a control method and a control device for a plate coil box applied to silicon steel production. Background The coil box is arranged in the finish rolling inlet area and is used for carrying out coreless curling on the intermediate billet from rough rolling, and then uncoiling and then feeding the intermediate billet into the finishing mill. When the plate coil box is used on a silicon steel variety, due to the characteristics of the silicon steel variety, the problems are that the silicon steel iron scale is strong in viscosity, does not fall off in the curling process, is serious in slipping, causes winding failure or tracking abnormality, small in friction force when the coil is unwound, causes that the coil is larger, and is transmitted in advance, the inertia is large, the center line fluctuates, and the tail part is easy to block in a stabilizer, so that the winding failure is caused. Based on the above, how to use an effective control method of the coiled sheet box applied to silicon steel production to ensure that the silicon steel intermediate billet can be coiled and uncoiled smoothly, ensure the quality of the silicon steel intermediate billet and improve the production efficiency of a production line is a technical problem to be solved. Disclosure of Invention The application aims to provide a control method and a control device for the application of a plate coil box to silicon steel production, which solve the problems of sliding during coiling and early transmission during uncoiling and blocking at the tail part of a silicon steel intermediate blank in the process of coiling and uncoiling the silicon steel intermediate blank through the plate coil box. Specifically, the application adopts the following technical scheme: According to one aspect of the embodiment of the application, a control method for the application of a slab coil box to silicon steel production is provided, and is characterized in that the method comprises the steps of coiling a silicon steel intermediate billet through the slab coil box, adjusting the advance rate of a first coil supporting roller according to the coil diameter of the silicon steel intermediate billet, wherein the advance rate is the ratio of the rotating speed difference of the first coil supporting roller and a bending roller to the rotating speed of the bending roller, controlling the first coil supporting roller and the second coil supporting roller to be lowered to a first preset height after the coiling of the silicon steel intermediate billet is completed so that an uncoiling arm reaches an uncoiling position, controlling the first coil supporting roller to be raised to a second preset height when the head of the silicon steel intermediate billet exceeds the slab coil box by a preset distance and the uncoiling arm is raised by 20 degrees relative to the uncoiling position, controlling the second coil supporting roller to be raised to a third preset height, wherein the second preset height is higher than the third preset height, controlling the first coil supporting roller to be raised to the third preset height, and the first coil supporting roller to be uncoiled to the first coil supporting roller and the second coil supporting roller to finish uncoiling position, and finishing the coiling of the silicon steel intermediate billet to the first coil supporting roller and the first coil supporting roller. In some embodiments of the application, the first preset height is-140 mm. In some embodiments of the application, the second preset height is-50 mm. In some embodiments of the application, the third preset height is-100 mm. In some embodiments of the present application, the adjusting the lead rate of the first coil supporting roller according to the coil diameter of the silicon steel intermediate billet includes: And if the coil diameter of the silicon steel intermediate billet is larger than or equal to the preset coil diameter, the lead rate of the first coil supporting roller is adjusted to be a second lead rate. In some embodiments of the application, the predetermined roll diameter is 1000mm. In some embodiments of the application, the first lead rate is 0.5%. In some embodiments of the present application, the calculation formula of the second lead rate is: s=(L-1000mm)*5%+0.5% And s is the second advance rate of the first coil supporting roller, and L is the coil diameter of the silicon steel intermediate billet. In some embodiments of the application, the method further comprises controlling the opening degree of the stabilizer to open a preset opening degree when the tail of the silicon steel intermediate billet reaches a preset position, so that the coiling of the silicon steel intermediate billet is completed. According to one aspect of the embodiment of the app