CN109290374B - Strip head straightening method - Google Patents
Strip head straightening method Download PDFInfo
- Publication number
- CN109290374B CN109290374B CN201811176420.XA CN201811176420A CN109290374B CN 109290374 B CN109290374 B CN 109290374B CN 201811176420 A CN201811176420 A CN 201811176420A CN 109290374 B CN109290374 B CN 109290374B
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- Prior art keywords
- strip
- strip head
- mandrel
- head
- straightening
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000002441 reversible effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The invention belongs to the technical field of metal material processing, and discloses a strip head straightening method, which is characterized in that strip head straightening is realized through a feeding roller and a steering roller of a rolling mill; the method comprises the following steps: step 1, coiling a steel coil on a mandrel of a coiling machine of a rolling mill; step 2, rotating a mandrel of the coiling machine clockwise, uncoiling and conveying a strip head of the steel coil to the upper part of a steering roller, and lowering a feeding roller to compress the strip head; step 3, rotating the feeding roller anticlockwise, and simultaneously rotating a mandrel of the coiling machine clockwise to drive the uncoiled strip steel to arch upwards; and 4, rotating the mandrel of the coiling machine anticlockwise to drive the uncoiled strip steel to retreat, and adjusting the warping height of the strip steel to 20-40 mm by clamping the strip heads through the feeding roller and the steering roller. The method provided by the invention can realize the straightening threading of the strip head based on the structure of the rolling mill, and does not need additional straightening equipment, thereby simplifying the equipment scale and avoiding the reduction of the production efficiency caused by the straightening equipment.
Description
Technical Field
The invention relates to the technical field of metal material processing, in particular to a strip head straightening method.
Background
The single-stand reversible rolling mill uncoiler is used for uncoiling the strip steel along the strip head and feeding the strip steel into a rolling mill for rolling, provides post tension for the first rolling, and is key equipment for ensuring rolling stability. Before the strip head of the steel coil passes through the roll gap of the rolling mill, a specific strip head straightening device is needed to straighten and upwarp the strip head of the strip steel for a certain height, so that the strip head of the strip steel can smoothly pass through the roll gap of the rolling mill, and the strip threading process is completed. When a coiler of a reversible rolling mill is used for coiling and rolling, special equipment for straightening a strip head, such as a three-roller straightening machine and the like, needs to be additionally arranged at the position of an inlet and an outlet, and the operation process of the straightening equipment is slow, so that the strip threading efficiency of strip steel is greatly influenced.
Disclosure of Invention
The invention provides a strip head straightening method, which solves the technical problems that in the prior art, the scale of production line equipment is increased and the production efficiency is reduced due to the fact that a straightening device is added to a rolling mill.
In order to solve the technical problem, the invention provides a strip head straightening method, which realizes strip head straightening through a feeding roller and a steering roller of a rolling mill; the method comprises the following steps:
step 1, coiling a steel coil on a mandrel of a coiling machine of a rolling mill;
step 2, rotating a mandrel of the coiling machine clockwise, uncoiling and conveying a strip head of the steel coil to the upper part of a steering roller, and lowering a feeding roller to compress the strip head;
step 3, rotating the feeding roller anticlockwise, and simultaneously rotating a mandrel of the coiling machine clockwise to drive the uncoiled strip steel to arch upwards;
and 4, rotating the mandrel of the coiling machine anticlockwise to drive the uncoiled strip steel to retreat, and adjusting the warping height of the strip steel to 20-40 mm by clamping the strip heads through the feeding roller and the steering roller.
Further, the step 1 further comprises:
before the steel coil is uncoiled, a tail pressing roller of a rolling mill is lifted to press the strip head of the steel coil, so that the strip head is restrained from being uncoiled in advance.
Further, the step 1 further comprises:
and lifting a plate shape instrument protective cover and a guide plate of the rolling mill before the steel coil is uncoiled.
Further, the step 2 further comprises:
and after the tape head is tightly pressed by the feeding roller, continuously rotating the mandrel of the coiling machine clockwise to continuously convey the tape head for 1.5 meters.
Further, the method further comprises:
and 5, after the strip head is straightened, clockwise rotating a mandrel of the coiling machine and a feeding roller, and conveying the strip steel to a wiping roller and a roll gap of a rolling mill.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the strip head straightening method provided by the embodiment of the application is based on the structure of the coiling machine of the rolling mill and is matched with the feeding roller and the steering roller to realize simple and reliable strip head straightening and threading operation, so that the condition of additional straightening equipment is avoided, the scale of production line equipment is simplified on one hand, and on the other hand, the problem of low overall production efficiency caused by low straightening and self straightening operation efficiency can be avoided. Specifically, a forward friction and a reverse friction are applied by matching a feeding roller with a steering roller, and the bending and straightening process of the strip head is realized by matching the forward rotation and the reverse rotation of a mandrel of a coiling machine; simple operation, small equipment investment scale and high efficiency.
Drawings
FIG. 1 is a schematic operational view of step 1 of a strip head straightening method provided by the present invention;
FIG. 2 is a schematic diagram of the operation of the first stage of step 2 of the strip head straightening method provided by the present invention;
FIG. 3 is a schematic diagram illustrating the operation of step 2 of the strip head straightening method provided by the present invention;
FIG. 4 is a schematic diagram of the operation of step 3 of the strip head straightening method provided by the present invention;
FIG. 5 is a schematic diagram of the operation of step 4 of the strip head straightening method provided by the present invention;
FIG. 6 is a schematic diagram of the operation of step 5 of the strip head straightening method provided by the present invention.
Detailed Description
The embodiment of the application provides a strip head straightening method, and solves the technical problems that in the prior art, the scale of production line equipment is increased and the production efficiency is reduced due to the fact that a single-stand reversible rolling mill is additionally provided with straightening equipment.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
The invention discloses a scheme, which is a method for straightening a strip head by utilizing the existing equipment of a single-stand rolling mill, and mainly comprises the following steps: moving the steel coil to a mandrel of a coiling machine by using a steel coil trolley, and ensuring the width centering deviation of the steel coil to be within +/-10 mm; straightening and bending the strip head by using guide rollers and feeding rollers of equipment at the inlet and outlet areas of the single-stand rolling mill; the straightened strip end is passed through the roll gap of the rolling mill. The problems that the existing threading method is low in efficiency and cannot smoothly thread the strip are solved, and meanwhile, the function of straightening the strip head is successfully realized by reasonably matching and using the guide roller and the feeding roller, so that the strip head smoothly passes through the roll gap of the rolling mill, and the production efficiency is improved. In addition, the straightening tape head and the tape threading method are safer, and the potential safety hazard of personnel operation is thoroughly eliminated.
Specifically, the embodiment provides a strip head straightening method, which is used for realizing strip head straightening through a feeding roller and a steering roller of a rolling mill; the method comprises the following steps:
referring to fig. 1, step 1: coiling the steel coil 4 on a coiling machine mandrel 6 of a rolling mill;
referring to fig. 2, step 2, rotating the mandrel 6 of the coiling machine clockwise, uncoiling and feeding the strip head 5 of the steel coil above the steering roller 2, and lowering the feeding roller 3 to press the strip head tightly;
referring to fig. 4, in step 3, the feeding roller 3 is rotated counterclockwise, and the coiling machine mandrel 6 is rotated clockwise at the same time, so that the uncoiled part of the strip steel is driven to arch upwards;
referring to step 4 of FIG. 5, rotating a mandrel 6 of the coiling machine anticlockwise to drive the uncoiled partial strip steel to retreat, and clamping a strip head 5 by a feeding roller 3 and a steering roller 2 to adjust the warping height to 20-40 mm.
Generally, the operation of coiling the strip steel includes:
and conveying the steel coil 4 to a reeling mandrel 6 through automatic width centering and automatic height centering, expanding the reeling mandrel 6, closing the outer support and finishing the coiling process.
Generally, the step 1 further comprises:
before the steel coil is uncoiled, a tail pressing roller of a rolling mill is lifted to press the head of the steel coil, so that the head of the steel coil is restrained from being uncoiled in advance; in the process, the coil car is at the lowest position.
Typically, the step 1 further comprises:
before the steel coil 4 is uncoiled, a plate shape instrument protective cover and a guide plate of the rolling mill are lifted.
Referring to fig. 3, in general, in order to facilitate the straightening operation of the tape head, it is necessary to leave a sufficient length of operation space, and therefore, the step 2 further includes:
after the feeding roller 3 presses the strip head 5, the coiling machine mandrel 6 continues to rotate clockwise, and the strip head 5 continues to be conveyed for 1.5 meters.
Referring to fig. 6, after the straightening of the tape head is completed, the tape threading operation may be performed, and the method further includes:
and 5, after the strip head is straightened, clockwise rotating the mandrel 6 of the coiling machine and the feeding roller 3, and sending the strip steel 4 to a wiping roller and a roll gap of a rolling mill.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the strip head straightening method provided by the embodiment of the application is based on the structure of the coiling machine of the rolling mill and is matched with the feeding roller and the steering roller to realize simple and reliable strip head straightening and threading operation, so that the condition of additional straightening equipment is avoided, the scale of production line equipment is simplified on one hand, and on the other hand, the problem of low overall production efficiency caused by low straightening and self straightening operation efficiency can be avoided. Specifically, a forward friction and a reverse friction are applied by matching a feeding roller with a steering roller, and the bending and straightening process of the strip head is realized by matching the forward rotation and the reverse rotation of a mandrel of a coiling machine; simple operation, small equipment investment scale and high efficiency.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A strip head straightening method is characterized in that strip head straightening is realized through a feeding roller and a steering roller of a rolling mill; it is characterized by comprising:
step 1, coiling a steel coil on a mandrel of a coiling machine of a rolling mill;
step 2, rotating a mandrel of the coiling machine clockwise, uncoiling and conveying a strip head of the steel coil to the upper part of a steering roller, and lowering a feeding roller to compress the strip head;
step 3, rotating the feeding roller anticlockwise, and simultaneously rotating a mandrel of the coiling machine clockwise to drive the uncoiled strip steel to arch upwards;
and 4, rotating the mandrel of the coiling machine anticlockwise to drive the uncoiled strip steel to retreat, and adjusting the warping height of the strip steel to 20-40 mm by clamping the strip heads through the feeding roller and the steering roller.
2. The strip head straightening method according to claim 1, wherein the step 1 further comprises:
before the steel coil is uncoiled, a tail pressing roller of a rolling mill is lifted to press the strip head of the steel coil, so that the strip head is restrained from being uncoiled in advance.
3. The strip head straightening method according to claim 2, wherein the step 1 further comprises:
and lifting a plate shape instrument protective cover and a guide plate of the rolling mill before the steel coil is uncoiled.
4. The strip head straightening method according to claim 3, wherein the step 2 further comprises:
and after the tape head is tightly pressed by the feeding roller, continuously rotating the mandrel of the coiling machine clockwise to continuously convey the tape head for 1.5 meters.
5. The strip head straightening method according to claim 1, further comprising:
and 5, after the strip head is straightened, clockwise rotating a mandrel of the coiling machine and a feeding roller, and conveying the strip steel to a wiping roller and a roll gap of a rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811176420.XA CN109290374B (en) | 2018-10-10 | 2018-10-10 | Strip head straightening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811176420.XA CN109290374B (en) | 2018-10-10 | 2018-10-10 | Strip head straightening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290374A CN109290374A (en) | 2019-02-01 |
| CN109290374B true CN109290374B (en) | 2019-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811176420.XA Active CN109290374B (en) | 2018-10-10 | 2018-10-10 | Strip head straightening method |
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| Country | Link |
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| CN (1) | CN109290374B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108520B (en) * | 2019-06-21 | 2022-09-06 | 上海梅山钢铁股份有限公司 | Strip steel straightener and flattening method |
| CN114160620B (en) * | 2021-12-08 | 2023-09-29 | 宝钢湛江钢铁有限公司 | Full-automatic head-carrying pre-bending device and method for steel coil on preparation station |
| CN114682749A (en) * | 2022-02-28 | 2022-07-01 | 首钢京唐钢铁联合有限责任公司 | Casting blank top bending treatment method for thin slab continuous casting machine |
| CN114798743B (en) * | 2022-05-06 | 2023-10-03 | 新余钢铁股份有限公司 | Rewinding process for strip steel coiling machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1507827A (en) * | 1974-05-06 | 1978-04-19 | Canada Steel Co | Handling rolled transfer bars |
| JPH0231606B2 (en) * | 1984-08-29 | 1990-07-16 | Nisshin Steel Co Ltd | KOIRUSENTAN JUDOSOCHI |
| JP3148447B2 (en) * | 1993-02-19 | 2001-03-19 | 新日本製鐵株式会社 | Guiding device for steel strip tip in cold rolling mill |
| JP5240587B2 (en) * | 2010-01-12 | 2013-07-17 | 新日鐵住金株式会社 | Steel strip passing method |
| CN203955760U (en) * | 2014-06-06 | 2014-11-26 | 武汉钢铁(集团)公司 | Strip coiling helps volume guide plate arrangement |
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- 2018-10-10 CN CN201811176420.XA patent/CN109290374B/en active Active
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| CN109290374A (en) | 2019-02-01 |
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Address after: 064400 No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province Patentee after: Shougang Zhixin Electromagnetic Materials (Qian'an) Co.,Ltd. Country or region after: China Address before: 064400 No. 025, Zhao an street, western industrial area, Qian'an, Tangshan City, Hebei Patentee before: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Country or region before: China |