CN216226149U - Vertical roll structure and roughing mill - Google Patents
Vertical roll structure and roughing mill Download PDFInfo
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- CN216226149U CN216226149U CN202121382082.2U CN202121382082U CN216226149U CN 216226149 U CN216226149 U CN 216226149U CN 202121382082 U CN202121382082 U CN 202121382082U CN 216226149 U CN216226149 U CN 216226149U
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Abstract
A vertical roll structure having a hole pattern on an outer peripheral surface thereof, the hole pattern being used for processing an edge portion of a billet of material for producing a cold-rolled substrate, the hole pattern comprising: the first roll surface, the first transition structure, the second roll surface, the second transition structure and the third roll surface are sequentially connected from top to bottom; a plurality of annular rolling grooves are concavely arranged on the side surface of the second roller surface and are arranged at intervals up and down; the plurality of annular grooves are configured to increase metal flow resistance of the edge surface to limit deformation of the edge. The side surface of the second roll surface of the hole type is concavely provided with a plurality of annular rolling grooves which are arranged at intervals up and down, and the plurality of annular rolling grooves increase the metal flowing resistance on the edge part of the raw material billet of the cold-rolled base plate, limit the edge part deformation or uniformly deform the edge part, so that the defect of peeling the edge part of the produced cold-rolled base plate is improved or eliminated, the production cost is reduced, and the production efficiency and the yield of products are improved.
Description
Technical Field
The utility model belongs to the technical field of steel rolling, and particularly relates to a vertical roll structure and a roughing mill.
Background
At present, the production of cold-rolled substrates is mainly carried out on a conventional hot continuous rolling production line, and the equipment configuration of the production line is different but basically the same. The method mainly comprises the following modes of 1, a fixed width press, two-roller reversible rough rolling with double vertical rollers, four-roller reversible rough rolling with double vertical rollers, a finishing mill group and coiling. And 2, reversible rough rolling by two rollers with double vertical rollers, reversible rough rolling by four rollers with double vertical rollers, finishing mill group and coiling. And 3, carrying out reversible rough rolling and finishing rolling on the four rolls with the double vertical rolls and coiling. The edge quality problem of cold rolled substrates produced on these lines is mainly edge peeling.
The main reason for causing the edge peeling is that the equipment on the hot rolling production line uses a vertical roll, the current vertical roll has no hole type or unreasonable hole type, and the leaf-shaped peeling is often generated. The product reaches a cold rolling production line, the edge warping skin needs to be cut off, the production cost is improved, and the production efficiency and the yield of the product are reduced.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a vertical roll structure and a roughing mill, aiming at solving the problem that the edge of the existing vertical roll is skinned when a cold-rolled substrate is produced.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a vertical roll structure having a hole pattern on the outer peripheral surface thereof, the hole pattern being used for processing the edge of a cold-rolled substrate billet, the hole pattern including: the first roll surface, the first transition structure, the second roll surface, the second transition structure and the third roll surface are sequentially connected from top to bottom; the outer diameter of the second roll surface is smaller than that of the first roll surface, the outer diameter of the second roll surface is smaller than that of the third roll surface, a plurality of annular grooves are concavely arranged on the side surface of the second roll surface, and the annular grooves are arranged at intervals up and down; the plurality of annular grooves are configured to increase metal flow resistance of the edge surface to limit deformation of the edge.
In one embodiment, the annular grooves are arranged in a semicircular, rectangular or triangular manner.
In one embodiment, the transition part of two adjacent annular grooves is in a circular arc shape.
In one embodiment, the depth of the annular groove is 3cm to 4 cm.
In one embodiment, the first roll surface, the second roll surface, and the third roll surface are all vertically aligned.
In one embodiment, the first transition structure comprises a first conical surface, a second conical surface, a third conical surface and a fourth conical surface which are connected in sequence; one end of the first conical surface is connected with the first roll surface; one end of the fourth conical surface is connected with the second roll surface; and the first conical surface, the second conical surface and the fourth conical surface all extend towards the direction of the second roll surface, and the third conical surface extends away from the direction of the second roll surface.
In one embodiment, a junction between the third tapered surface and the fourth tapered surface is formed in a circular arc shape.
In one embodiment, the second transition structure is a symmetrical structure of the first transition structure.
A roughing mill comprising: the vertical roll structure.
The beneficial effect of this application lies in: the side surface of the second roll surface of the hole type is concavely provided with a plurality of annular rolling grooves which are arranged at intervals up and down, and the plurality of annular rolling grooves increase the metal flow resistance of the edge region of the cold-rolled substrate raw material billet, limit the edge deformation or uniformly deform the edge, so that the defect of edge peeling of the produced cold-rolled substrate is improved or eliminated, the production cost is reduced, and the production efficiency and the yield of products are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a vertical roll structure provided in an embodiment of the present application;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Wherein, in the figures, the respective reference numerals:
10. first roll surface 20, first transition Structure
21. A first conical surface 22 and a second conical surface
23. A third conical surface 24 and a fourth conical surface
30. Second roll surface 31, annular groove
40. A second transition structure 50, a third roll of dough.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 2, the present embodiment provides a vertical roll structure having a hole pattern on the outer peripheral side thereof, the hole pattern being used to process the edge portion of a slab of material from which a cold-rolled substrate is produced, and it can be understood that a cold-rolled substrate is produced from a hot-rolled slab (slab of material) in a hot-rolling line, and the process is continued with the produced cold-rolled substrate as a material in the cold-rolling line. The thickness of the raw material billet for producing the cold-rolled substrate is 230mm, and the width of the slab is 900 mm-2130 mm. The edge of the cold-rolled base plate raw material billet is produced, namely the left side or the right side of the raw material billet. The hole pattern includes: the roll comprises a first roll surface 10, a first transition structure 20, a second roll surface 30, a second transition structure 40 and a third roll surface 50 which are connected from top to bottom in sequence. The outer diameter of the second roll surface 30 is smaller than the outer diameter of the first roll surface 10 and the outer diameter of the third roll surface 50, a plurality of annular grooves 31 are concavely arranged on the side surface of the second roll surface 30, the annular grooves 31 are arranged at intervals up and down, and the annular grooves 31 are corrugated. According to the principle of plastic deformation of metal and the principle of the law of minimum resistance: when the metal flows in the direction of the least resistance during plastic deformation, and when the edge of the material slab is pressed by the vertical rolls, the metal at high temperature flows along the surface of the material slab having less resistance (i.e., the surface not pressed by the vertical rolls) first, and the provision of the plurality of annular grooves 31 increases the resistance to the flow of the metal on the edge of the material slab, thereby restricting the edge deformation. Or uniformly deformed, thereby maximally improving or eliminating the defect of edge deformation of the produced cold-rolled substrate.
In one embodiment, the annular groove 31 is disposed in a semicircular shape, but the shape and structure of the annular groove 31 are not limited thereto, and may be, for example, a rectangular shape or a triangular shape. The stress bearing capacity of the joint of the two adjacent semicircular annular rolling grooves 31 is stronger than that of the joint of the two triangular annular rolling grooves 31, and the two annular rolling grooves are better processed.
In one embodiment, the transition position of two adjacent annular grooves 31 is arc-shaped, so that stress concentration at the transition position is effectively avoided, and the fracture of the transition position of two annular grooves 31 caused by overlarge stress is effectively prevented.
In one embodiment, the depth of the annular groove 31 is 3cm to 4 cm. The ring-shaped groove 31 having such a depth is most effective in restricting the metal flow at the edge of the billet.
In one embodiment, the first roll surface 10, the second roll surface 30, and the third roll surface 50 are all vertically aligned.
In one embodiment, the first transition structure 20 includes a first tapered surface 21, a second tapered surface 22, a third tapered surface 23, and a fourth tapered surface 24 connected in series. One end of the first conical surface 21 is connected with the first roll surface 10; one end of the fourth tapered surface 24 is connected to the second roll surface 30. The first tapered surface 21, the second tapered surface 22 and the fourth tapered surface 24 all extend towards the second roll surface 30, and the third tapered surface 23 extends away from the second roll surface 30. The first transition structure 20 is made of four step surfaces, so that the plastic deformation of the edge of the raw material billet is increased, the billet is subjected to deformation strengthening, and the aims of refining grains, improving the metallographic structure of metal at the edge and improving the structure performance of the edge area are fulfilled. Meanwhile, the friction coefficient of the rough rolling billet is increased, which is beneficial to stable production. And the number and the taper of the conical surfaces are set according to actual requirements.
In one embodiment, the junction between the third tapered surface 23 and the fourth tapered surface 24 is formed in a circular arc shape. The arc-shaped arrangement effectively avoids the concentration of stress.
In one embodiment, the second transition structure 40 is a symmetrical structure of the first transition structure 20. And therefore will not be described in detail herein.
The present application further provides a roughing mill comprising: and (4) a vertical roller structure. Optionally, the cold-rolled substrate raw material billet is rolled by a roughing mill for 3-5 passes, the roughing mill is put in odd-numbered passes in the rolling process, the roughing mill is a full hydraulic reduction mechanism and has the functions of Automatic Width Control (AWC) and Short Stroke Control (SSC), the maximum reduction of the roughing mill is 100mm, and the maximum rolling force is 1000 tons. The yield can be improved by 1.2% by using the vertical roll and the roughing mill with the structure, 200 ten thousand tons of rolled substrates are produced by one production line every year, and the price difference of each ton is 2000 yuan. Produce effective and benefit 4800 ten thousand yuan a year.
The production process using the vertical roll structure is as follows:
the method comprises the following steps: the grooved vertical roll is designed according to the thickness of the raw material billet of the cold-rolled base plate produced by a manufacturer.
Step two: and (4) machining the double vertical rolls on the roughing mill according to the designed hole pattern.
Step three: when the production line is overhauled to prepare for producing cold-rolled substrates, a set of hole type vertical rolls with designed strips is installed on a vertical roll mill before a roughing mill according to requirements.
Step four: organizing the production according to the specific process requirements for producing the cold-rolled substrate.
Step five: and inspecting the surface quality of the edge of the finished cold-rolled substrate, and observing whether the edge peeling is improved or eliminated.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A vertical roll structure having a pass on an outer peripheral surface thereof, the pass being used for processing an edge portion of a cold-rolled substrate billet, the pass comprising: the first roll surface, the first transition structure, the second roll surface, the second transition structure and the third roll surface are sequentially connected from top to bottom; the outer diameter of the second roll surface is smaller than that of the first roll surface, the outer diameter of the second roll surface is smaller than that of the third roll surface, a plurality of annular grooves are concavely arranged on the side surface of the second roll surface, and the annular grooves are arranged at intervals up and down; the plurality of annular grooves are configured to increase metal flow resistance of the edge surface to limit deformation of the edge.
2. A vertical roll structure as defined in claim 1, wherein: the annular rolling groove is arranged in a semicircular shape, a rectangular shape or a triangular shape.
3. A vertical roll structure according to claim 1 or 2, characterized in that: the transition part of two adjacent annular grooves is in an arc shape.
4. A vertical roll structure according to claim 1 or 2, characterized in that: the depth of the annular rolling groove is 3cm-4 cm.
5. A vertical roll structure as defined in claim 1, wherein: the first roll surface, the second roll surface and the third roll surface are all vertically arranged.
6. A vertical roll structure as defined in claim 1, wherein: the first transition structure comprises a first conical surface, a second conical surface, a third conical surface and a fourth conical surface which are connected in sequence; one end of the first conical surface is connected with the first roll surface; one end of the fourth conical surface is connected with the second roll surface; and the first conical surface, the second conical surface and the fourth conical surface all extend towards the direction of the second roll surface, and the third conical surface extends away from the direction of the second roll surface.
7. The vertical roll structure of claim 6, wherein: the joint of the third conical surface and the fourth conical surface is arc-shaped.
8. A vertical roll structure as defined in claim 7, wherein: the second transition structure is a symmetrical structure of the first transition structure.
9. A roughing mill characterized by comprising: the edger structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121382082.2U CN216226149U (en) | 2021-06-21 | 2021-06-21 | Vertical roll structure and roughing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121382082.2U CN216226149U (en) | 2021-06-21 | 2021-06-21 | Vertical roll structure and roughing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216226149U true CN216226149U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121382082.2U Active CN216226149U (en) | 2021-06-21 | 2021-06-21 | Vertical roll structure and roughing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216226149U (en) |
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2021
- 2021-06-21 CN CN202121382082.2U patent/CN216226149U/en active Active
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Effective date of registration: 20221010 Address after: 538000 Shenglong metallurgical office building, Gongche Town, Gangkou District, Fangchenggang City, Guangxi Zhuang Autonomous Region Patentee after: GUANGXI SHENGLONG METALLURGICAL CO.,LTD. Patentee after: Guangxi Shenglong Iron and Steel Materials Research Institute Co.,Ltd. Address before: 538000 Shenglong metallurgical office building, Gongche Town, Gangkou District, Fangchenggang City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI SHENGLONG METALLURGICAL CO.,LTD. Patentee before: Guangxi Shenglong iron and Steel Materials Research Institute |
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