Method and device for adjusting rolling in a forced wide spread groove

Abstract

The application discloses a method for adjusting rolling in forced wide spread grooves, and relates to the technical field of hot-rolled narrow strip steel. A set of guide plates is arranged at the inlet end and the outlet end of each pass of a blank, so as to adjust the position of the blank in each forced wide spread groove. The application further discloses an adjusting device for rolling in forced wide spread grooves. The application simplifies the groove system in a steel rolling mill, reduces one roller system, and reduces the time for secondary roller replacement and a large number of spare rollers. Therefore, the application not only reduces production cost, but also improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled narrow strip steel technology, and in particular to an adjustment method and apparatus for rolling in a forced widening pass. Background Technology

[0002] Hot-rolled narrow strip steel uses a three-roll section steel mill as a roughing mill. There are no vertical rolls in the roughing mill, only two vertical rolls in the finishing mill. Therefore, the width of the intermediate billet must be controlled within an appropriate range.

[0003] Generally, the dimensions of the billets produced by strip steel mills do not match the roll pass patterns required for the finished product width in steel rolling mills. Taking a certain strip steel mill as an example, its billet cross-sectional dimensions are 150*260mm, 150*220mm, and 150*150mm, while the product width is 145~325mm. There are only two roll pass patterns: 145~265mm and 265~325mm. When producing a width of 295~325mm, 150*260mm billets must be used with a forced widening pass pattern. However, the intermediate billets after forced widening are too wide to produce. Adding an extra set of rolls would require nine spare rolls, costing approximately 630,000 yuan, and adding two roll changes per month, taking about 8 hours. Roll welding is also required monthly, costing approximately 50,000 yuan, making the production cost too high. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an adjustment method and apparatus for rolling in a forced wide roll pass.

[0005] To solve the above technical problems, the technical solution of the present invention is as follows: A method for adjusting rolling in a forced widening pass includes: A set of guide plates is set at both the inlet and outlet ends of the first rolling pass of the billet so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass. A set of guide plates is provided at both the inlet and outlet ends of the billet in the second rolling pass, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass. A set of guide plates is set at both the inlet and outlet ends of the billet in the third rolling pass, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass. A set of guide plates is provided at both the inlet and outlet ends of the fourth rolling pass of the billet, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass. A set of guide plates is set at both the inlet and outlet ends of the fifth rolling pass of the billet, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass.

[0006] The present invention also provides an adjustment device for rolling in a forced wide-pass profile, comprising: The first guide plate group is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the first pass of the steel rolling mill. The first guide plate group includes two first guide plates arranged sequentially in the horizontal direction. The distance between the two first guide plates is less than the length of the forced widening pass rolled in the first pass, and the right end face of the first guide plate on the left is flush with the left end of the forced widening pass rolled in the first pass. The second guide plate group is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the second pass of the steel rolling mill. The second guide plate group includes two second guide plates arranged sequentially in the horizontal direction. The distance between the two second guide plates is less than the length of the forced widening pass rolled in the second pass, and the left end face of the second guide plate on the right side is flush with the right end of the forced widening pass rolled in the second pass. The third guide plate group is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the third pass of the steel rolling mill. The third guide plate group includes two third guide plates arranged sequentially in the horizontal direction. The distance between the two third guide plates is less than the length of the forced widening pass rolled in the third pass, and the right end face of the third guide plate on the left is flush with the left end of the forced widening pass rolled in the third pass. The fourth guide plate group is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fourth pass of the steel rolling mill. The fourth guide plate group includes two fourth guide plates arranged sequentially in the horizontal direction. The distance between the two fourth guide plates is less than the length of the forced widening pass rolled in the fourth pass, and the left end face of the fourth guide plate on the right side is flush with the right end of the forced widening pass rolled in the fourth pass. The fifth guide plate group is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fifth pass of the steel rolling mill. The fifth guide plate group includes two fifth guide plates arranged sequentially in the horizontal direction. The distance between the two fifth guide plates is less than the length of the forced widening pass rolled in the fifth pass, and the right end face of the fifth guide plate on the left is flush with the left end of the forced widening pass rolled in the fifth pass.

[0007] As a preferred embodiment of the adjustment device for forced wide-opening roll forming in the present invention, the first guide plate group, the second guide plate group, the third guide plate group, the fourth guide plate group and the fifth guide plate group are all fixedly installed on the crossbeam of the steel rolling mill.

[0008] As a preferred embodiment of the adjustment device for rolling in the forced widening pass of the present invention, the crossbeam includes a first crossbeam and a second crossbeam; The first guide plate group, the third guide plate group, and the fifth guide plate group are fixedly installed on the first crossbeam, and the second guide plate group and the fourth guide plate group are fixedly installed on the second crossbeam.

[0009] As a preferred embodiment of the adjustment device for forced wide-extension rolling in the present invention, the first crossbeam and the second crossbeam are both slidably mounted on the steel rolling mill, and the sliding directions of the first crossbeam and the second crossbeam are both parallel to the horizontal direction.

[0010] The beneficial effects of this invention are: This invention guides the billet through a guide plate assembly and adjusts the position of the billet in each forced widening pass to produce products of a specific width. It simplifies the pass system in the steel rolling mill, reduces one type of roll system, and reduces the time for secondary roll changes and the need for a large number of spare rolls. This not only reduces production costs but also improves production efficiency. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram showing the cross-section of the deformed billet and its position in the die. Figure 2 A schematic diagram of the structure of the adjustment device for forced widening of the rolling pass provided by the present invention; Among them: 1. First guide plate group; 2. Second guide plate group; 3. Third guide plate group; 4. Fourth guide plate group; 5. Fifth guide plate group. Implementation

[0013] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0014] This embodiment provides a method for adjusting rolling in a forced widening pass, which includes steps S101 to S104, and the specific steps are described below: Step S101: A set of guide plates is set at both the inlet and outlet ends of the billet in the first rolling pass, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass.

[0015] Step S102: A set of guide plates is provided at both the inlet and outlet ends of the billet in the second rolling pass, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass.

[0016] Step S103: A set of guide plates is set at both the inlet and outlet ends of the billet in the third rolling pass, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass.

[0017] Step S104: A set of guide plates is provided at both the inlet and outlet ends of the fourth rolling pass of the billet, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass.

[0018] Step S105: A set of guide plates is set at both the inlet and outlet ends of the fifth rolling pass of the billet, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass.

[0019] Taking the production of products with a width of 265~285mm using a 150*220mm blank as an example: First, the position of the billet in each forced widening pass is adjusted by adjusting the position of the guide plate assembly, ensuring that the first pass K1 is on the left side of the pass, the first pass K2 is on the right side of the pass, the third pass K3 is on the left side of the pass, the fourth pass K4 is on the right side of the pass, and the fifth pass K5 is on the left side of the pass. The cross-section of the billet deformation and its position in the pass are as follows: Figure 1 .

[0020] See Figure 2 This embodiment also provides an adjustment device for rolling in a forced wide-roll pass, the device including a first guide plate group 1, a second guide plate group 2, a third guide plate group 3, a fourth guide plate group 4 and a fifth guide plate group 5.

[0021] The first guide plate group 1 is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the first pass K1 of the steel rolling mill. The first guide plate group 1 includes two first guide plates, which are arranged sequentially along the horizontal direction. The distance between the two first guide plates is less than the length of the forced widening pass rolled in the first pass K1, and the right end face of the first guide plate on the left is located in the same vertical plane as the left end of the forced widening pass rolled in the first pass K1.

[0022] The second guide plate assembly 2 is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the second pass K2 of the steel rolling mill. This second guide plate assembly 2 includes two second guide plates, which are arranged sequentially along the horizontal direction. The distance between the two second guide plates is less than the length of the forced widening pass rolled in the second pass K2, and the left end face of the second guide plate on the right is located in the same vertical plane as the right end of the forced widening pass rolled in the second pass K2.

[0023] The third guide plate group 3 is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the third pass K3 of the steel rolling mill. This third guide plate group 3 includes two third guide plates, which are arranged sequentially in the horizontal direction. The distance between the two third guide plates is less than the length of the forced widening pass rolled in the third pass K3, and the right end face of the third guide plate on the left is located in the same vertical plane as the left end of the forced widening pass rolled in the third pass K3.

[0024] The fourth guide plate group 4 is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fourth pass K4 of the steel rolling mill. This fourth guide plate group 4 includes two fourth guide plates, which are arranged sequentially along the horizontal direction. The distance between the two fourth guide plates is less than the length of the forced widening pass rolled in the fourth pass K4, and the left end face of the fourth guide plate on the right is located in the same vertical plane as the right end of the forced widening pass rolled in the fourth pass K4.

[0025] The fifth guide plate group 5 is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fifth pass K5 of the steel rolling mill. This fifth guide plate group 5 includes two fifth guide plates, which are arranged sequentially along the horizontal direction. The distance between the two fifth guide plates is less than the length of the forced widening pass rolled in the fifth pass K5, and the right end face of the fifth guide plate on the left is located in the same vertical plane as the left end of the forced widening pass rolled in the fifth pass K5.

[0026] Among them, the first guide plate group 1, the second guide plate group 2, the third guide plate group 3, the fourth guide plate group 4, and the fifth guide plate group 5 are all fixedly installed on the crossbeam of the steel rolling mill.

[0027] It should be noted that the crossbeams on the steel rolling mill include a first crossbeam and a second crossbeam, both of which are parallel to the horizontal line of sight along their length. Both the first and second crossbeams are slidably mounted on the steel rolling mill, and their sliding directions are both parallel to the horizontal direction.

[0028] The first guide plate group 1, the third guide plate group 3, and the fifth guide plate group 5 are fixedly installed on the first crossbeam. When the first crossbeam moves horizontally, the first guide plate group 1, the third guide plate group 3, and the fifth guide plate group 5 move synchronously with the first crossbeam, so that the billet is simultaneously located on the same side of the corresponding forced widening pass in the first pass K1, the third pass K3, and the fifth pass K5. The second guide plate group 2 and the fourth guide plate group 4 are fixedly installed on the second crossbeam. When the second crossbeam moves horizontally, the second guide plate group 2 and the fourth guide plate group 4 move synchronously with the second crossbeam, so that the billet is simultaneously located on the same side of the corresponding forced widening pass in the second pass K2 and the fourth pass K4.

[0029] Therefore, the technical solution of this application simplifies the roll pass system in the steel rolling mill, reduces one type of roll system, and reduces the time for secondary roll changes and the need for a large number of spare rolls, which not only reduces production costs but also improves production efficiency.

[0030] In addition to the above embodiments, the present invention may have other implementation methods; all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A method for adjusting rolling in a forced wide-roll pass, characterized in that: include: A set of guide plates is set at both the inlet and outlet ends of the first rolling pass of the billet so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass. A set of guide plates is provided at both the inlet and outlet ends of the billet in the second rolling pass, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass. A set of guide plates is set at both the inlet and outlet ends of the billet in the third rolling pass, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass. A set of guide plates is provided at both the inlet and outlet ends of the fourth rolling pass of the billet, so that after the billet enters the forced widening pass of the second rolling pass, the right end of the billet is in contact with the right end of the forced widening pass, and there is a gap between the left end of the billet and the seat end of the forced widening pass. A set of guide plates is set at both the inlet and outlet ends of the fifth rolling pass of the billet, so that after the billet enters the forced widening pass of the first rolling pass, the left end of the billet is in contact with the left end of the forced widening pass, and there is a gap between the right end of the billet and the right end of the forced widening pass.

2. An adjustment device for forced widening rolling in a roll pass, characterized in that: include: The first guide plate group (1) is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the first pass of the steel rolling mill. The first guide plate group (1) includes two first guide plates arranged sequentially in the horizontal direction. The distance between the two first guide plates is less than the length of the forced widening pass rolled in the first pass, and the right end face of the first guide plate on the left is flush with the left end of the forced widening pass rolled in the first pass. The second guide plate group (2) is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the second pass of the steel rolling mill. The second guide plate group (2) includes two second guide plates arranged in sequence along the horizontal direction. The distance between the two second guide plates is less than the length of the forced widening pass rolled in the second pass, and the left end face of the second guide plate on the right side is flush with the right end of the forced widening pass rolled in the second pass. The third guide plate group (3) is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the third pass of the steel rolling mill. The third guide plate group (3) includes two third guide plates arranged in sequence along the horizontal direction. The distance between the two third guide plates is less than the length of the forced widening pass rolled in the third pass, and the right end face of the third guide plate on the left is flush with the left end of the forced widening pass rolled in the third pass. The fourth guide plate group (4) is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fourth pass of the steel rolling mill. The fourth guide plate group (4) includes two fourth guide plates arranged in sequence along the horizontal direction. The distance between the two fourth guide plates is less than the length of the forced widening pass rolled in the fourth pass, and the left end face of the fourth guide plate on the right side is flush with the right end of the forced widening pass rolled in the fourth pass. The fifth guide plate group (5) is fixedly installed at the inlet and outlet ends of the forced widening pass rolled in the fifth pass of the steel rolling mill. The fifth guide plate group (5) includes two fifth guide plates arranged sequentially in the horizontal direction. The distance between the two fifth guide plates is less than the length of the forced widening pass rolled in the fifth pass, and the right end face of the fifth guide plate on the left is flush with the left end of the forced widening pass rolled in the fifth pass.

3. The adjustment device for forced widening of the rolling pass according to claim 2, characterized in that: The first guide plate group (1), the second guide plate group (2), the third guide plate group (3), the fourth guide plate group (4) and the fifth guide plate group (5) are all fixedly installed on the crossbeam of the steel rolling mill.

4. The adjustment device for forced widening of the rolling pass according to claim 3, characterized in that: The crossbeam includes a first crossbeam and a second crossbeam; The first guide plate group (1), the third guide plate group (3) and the fifth guide plate group (5) are fixedly installed on the first crossbeam, and the second guide plate group (2) and the fourth guide plate group (4) are fixedly installed on the second crossbeam.

5. The adjustment device for forced widening of the rolling pass according to claim 4, characterized in that: Both the first crossbeam and the second crossbeam are slidably mounted on the steel rolling mill, and the sliding directions of the first crossbeam and the second crossbeam are both parallel to the horizontal direction.

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