Method for controlling opening degree of rough rolling edger during rolling of tapered slab
A technology of vertical roll mill and opening degree, which is applied in the direction of rolling force/roll gap control, etc., can solve the problems of lengthening, poor slab effect, etc., achieve the goal of no manual intervention, speed up logistics turnover, and reduce production costs Effect
A technology of vertical roll mill and opening degree, which is applied in the direction of rolling force/roll gap control, etc., can solve the problems of lengthening, poor slab effect, etc., achieve the goal of no manual intervention, speed up logistics turnover, and reduce production costs Effect
CN102581033AActive Publication Date: 2012-07-18BAOSHAN IRON & STEEL CO LTD
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[0026] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0027] Such as figure 1 Shown, a rough rolling vertical roll mill opening control method when rolling a tapered slab, comprising the following steps:
[0028] Step 1, such as figure 2 , 3 , Shown in 4, 5, slab is divided into three sections, are respectively head parallel section, middle inclined section and afterbody parallel section, and head parallel section width is greater than tail section parallel section width;
[00...
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The invention relates to the field of hot-rolled band steel production control, in particular to a method for controlling the opening degree of a rough rolling edger during the rolling of a tapered slab. A method for controlling the opening degree of a rough rolling edger during the rolling of a tapered slab includes the following steps: step 1 of dividing a slab into three sections, respectively: a head parallel section, a middle oblique section and an end parallel section, with the width of the head parallel section being larger than that of the end parallel section; step 2 of reading the original data of the slab; step 3 of determining the shape equation of the slab according to the original data of the slab; step 4 of selecting a plurality of characteristic points on the shaft of the slab at equal intervals, and obtaining the coordinates of the characteristic points by calculation; and step 5 of setting various parameters required by this rolling procedure according to the obtained coordinates of the characteristic points of the slab. In the invention, by accurately describing and defining the shape of the tapered slab, and precisely calculating the set values of the opening degree of the edger during the process in which tapered slabs in various shapes pass through the edger, the products rolled from the tapered slabs have no difference with products rolled from normal slabs in terms of quality precision.
Description
technical field [0001] The invention relates to the field of production control of hot-rolled strip steel, in particular to a method for controlling the opening degree of a rough-rolling vertical roll mill when rolling a tapered slab. Background technique [0002] The tapered billet is also called the width-adjusting billet, which is the excessive billet produced when the slab continuous casting machine casts two kinds of slabs with different widths. The width difference varies due to the change in width before and after each casting, and there is no rule to follow. The existing hot-rolled rough-rolling vertical roll mills are all controlled by a fixed opening. The process control system and the basic automation system can only control the width of the rectangular slab with the same width at both ends. The mechanism of hot-rolled conical slab control is to use the tail Short stroke sLt control function. By advancing the control position of the short stroke sLt of the tail ...
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Patent Timeline
18 Jul 2012
Publication
CN102581033A
- IPC
- B21B37/58
- Inventors
- 黄玉龙; 张仁其