Rolling system giving consideration to both medium-sized section steel and high-quality round steel
By designing rolling systems with specific layout forms and rolling mill types, the problem of difficult to take into account high-quality round steel in medium-sized steel production lines is solved, and efficient production of medium-sized steel and high-quality round steel is achieved, reducing costs.
Patent Information
- Application Number
- CN202323366801.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-08
AI Technical Summary
It is difficult for medium-sized steel production lines to take into account the production of high-quality round steel, resulting in the need of multiple production lines by enterprises, which increases investment and production costs.
A rolling system was designed, including 9 rough rolling mills and 12 finishing mills, adopting specific arrangements and types of mills, such as 2-roll short stress line rolling mills and universal rolling mills, combined with fly shears to meet medium-sized steel and Production demand for high-quality round steel.
It realizes efficient production of medium-sized steel and high-quality round steel, improves production flexibility, and reduces the investment and production costs of enterprises.
Smart Images
Figure CN222268205U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steel rolling production, and in particular relates to a rolling system for both medium-sized steel and high-quality round steel. Background Art
[0002] Generally, small steel sections, such as small angle steel and channel steel, can be produced on the same production line as small-sized round steel. However, it is difficult for medium-sized steel production lines to produce high-quality round steel, considering the billet specifications, rolling mill configuration, and subsequent finishing and collection systems. High-quality round steel is usually produced using a separate medium rod production line, which leads to an increase in the number of production lines required by the company, and a corresponding increase in investment and production costs. Utility Model Content
[0003] The utility model relates to a rolling system for rolling medium-sized steel and high-quality round steel, which can at least solve some defects of the prior art.
[0004] The utility model relates to a rolling system for both medium-sized steel and high-quality round steel, comprising a rough rolling mill group and a finishing rolling mill group.
[0005] The rough rolling mill group includes 9 rough rolling mills, of which 4 rough rolling mills are vertical rolling mills and the other 5 rough rolling mills are horizontal rolling mills; the rough rolling mill group is arranged in the form of 1V-2H-3V-4H-5H-5V-6H-7H-7V;
[0006] The finishing mill group includes 12 finishing mills, of which 8 finishing mills are universal mills, and the other 4 finishing mills are 2 horizontal mills and 2 vertical mills; the layout of the finishing mill group is 8H / U-9H / U-10H / U-11H / U-12H / U-13H-14H / U-15H / U-15V-16H-17H / U-17V;
[0007] Among them, V stands for vertical rolling mill, H stands for horizontal rolling mill, and H / U stands for universal rolling mill.
[0008] As one of the implementation modes, each rough rolling mill is a two-roll short stress line rolling mill.
[0009] As one of the implementation modes, in the finishing mill group, the two horizontal rolling mills and the two vertical rolling mills are all two-roller short stress line rolling mills.
[0010] As one of the implementation modes, a pre-rolling steel turning machine is arranged on the incoming material side of the rough rolling mill group.
[0011] As one of the implementation modes, a post-roughing shearing device is arranged between the roughing mill group and the finishing mill group.
[0012] As one of the implementation modes, the post-rough rolling shearing device adopts a flying shear.
[0013] As one of the implementation modes, a post-finishing shearing device is arranged on the discharge side of the finishing mill group.
[0014] As one of the implementation modes, the post-finishing rolling shearing device adopts a flying shear.
[0015] The utility model has at least the following beneficial effects:
[0016] The rough rolling unit adopts the layout of 1V-2H-3V-4H-5H-5V-6H-7H-7V, and the finishing unit adopts the layout of 8H / U-9H / U-10H / U-11H / U-12H / U-13H-14H / U-15H / U-15V-16H-17H / U-17V, which can better complete the rolling production of medium-sized steel and high-quality round steel, especially the double-frame layout of 5# roughing mill and 7# roughing mill in the rough rolling unit and the double-frame layout of 15# finishing mill and 17# finishing mill in the finishing unit, which can better meet the production requirements of high-quality round steel and ensure the rolling quality. The rolling system provided by the utility model can produce medium-sized steel and high-quality medium bars, improve the production flexibility of the rolling line, enable the rolling line to have the production capacity of multiple varieties of products, and reduce the investment cost and production cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A schematic structural diagram of a rolling system provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] like Figure 1 The embodiment of the utility model provides a rolling system for both medium-sized steel and high-quality round steel, including a rough rolling unit 3 and a finishing rolling unit 5.
[0021] The roughing mill group 3 includes 9 roughing mills, of which 4 roughing mills are vertical rolling mills and the other 5 roughing mills are horizontal rolling mills; the roughing mill group 3 is arranged in the form of 1V-2H-3V-4H-5H-5V-6H-7H-7V;
[0022] The finishing mill group 5 includes 12 finishing mills, of which 8 finishing mills are universal mills, and the other 4 finishing mills are 2 horizontal mills and 2 vertical mills; the layout of the finishing mill group 5 is 8H / U-9H / U-10H / U-11H / U-12H / U-13H-14H / U-15H / U-15V-16H-17H / U-17V.
[0023] Among them, V stands for vertical rolling mill, H stands for horizontal rolling mill, and H / U stands for universal rolling mill.
[0024] In the roughing mill group 3, 1 to 7 roughing mills are included, 1# roughing mill is a vertical mill, 2# roughing mill is a horizontal mill, 3# roughing mill is a vertical mill, 4# roughing mill is a horizontal mill, and 6# roughing mill is a horizontal mill; 5# roughing mill is provided with two stands, including a horizontal mill and a vertical mill; 7# roughing mill is provided with two stands, including a horizontal mill and a vertical mill.
[0025] Based on the above-mentioned rough rolling mill group 3 layout, the rough rolling production of medium-sized steel and high-quality round steel can be better completed, especially the double-frame layout of the 5# rough rolling mill and the 7# rough rolling mill can better meet the production requirements of high-quality round steel.
[0026] Further preferably, each rough rolling mill is a two-roll short stress line rolling mill, and the stress applied during rolling is relatively uniform, so high-quality products can be rolled out. In addition, the short stress rolling mill has a higher rolling speed and a smaller rolling gap, so the production efficiency is higher.
[0027] The finishing mill group 5 includes 8# to 17# finishing mills, among which 8# to 12# finishing mills are all universal mills, 13# finishing mill is a horizontal mill, 14# finishing mill is a universal mill, and 16# finishing mill is a horizontal mill; 15# finishing mill is provided with two stands, including a universal mill and a vertical mill; 17# finishing mill is provided with two stands, including a universal mill and a vertical mill.
[0028] Based on the above arrangement of the finishing mill group 5, the rough rolling production of medium-sized steel and high-quality round steel can be better completed, especially the double-frame arrangement of the 15# finishing mill and the 17# finishing mill can better meet the production requirements of high-quality round steel.
[0029] Further preferably, in the finishing mill group 5, the two horizontal rolling mills and the two vertical rolling mills are two-roller short stress line rolling mills, that is, the 13# finishing mill and the 16# finishing mill are two-roller short stress line rolling mills, and the vertical rolling mills in the 15# finishing mill and the 17# finishing mill are two-roller short stress line rolling mills. In the finishing mill group 5, the short stress line rolling mill is used, and the stress applied during rolling is more uniform, and high-quality products can be rolled out. In addition, the short stress rolling mill has a higher rolling speed and a smaller rolling gap, so the production efficiency is higher.
[0030] Among them, the rough rolling unit 3 and the finishing rolling unit 5 are both full continuous rolling production units, which can significantly increase the output of the rolling line compared with the conventional "blank opening + continuous rolling" mode for producing steel sections.
[0031] In one embodiment, in the roughing mill group 3, the roll parameters of each roughing mill are:
[0032] In one embodiment, in the finishing mill group 5, each universal rolling mill adopts the following technical parameters:
[0033] The horizontal roller parameters are The horizontal roller center distance is 810-950mm;
[0034] Vertical roll parameters are The center distance of vertical rollers is 620~940mm.
[0035] In the finishing mill group 5, the horizontal rolling mill and the vertical rolling mill adopt the following technical parameters:
[0036] Roller parameters are The center distance between the rollers is 530~780mm.
[0037] In one embodiment, if Figure 1 The incoming material side of the rough rolling mill group 3 is provided with a pre-rolling steel turning machine 2 for turning rectangular billets. In a specific production embodiment, the billet specifications used are 180mm×180mm and 220mm×280mm, and the maximum billet length is 12000mm; according to the rolling process, the steel turning machine is mainly used for the pre-rolling steel turning of rectangular billets (220mm×280mm).
[0038] In addition, if Figure 1 The rough rolling unit 3 is connected to the heating furnace through the furnace discharge roller 1. The furnace discharge roller 1 is used to transport the high-temperature steel billets heated by the heating furnace so that the steel billets can enter the rough rolling unit 3 smoothly.
[0039] In one embodiment, if Figure 1A post-roughing shearing device 4 is arranged between the roughing mill group 3 and the finishing mill group 5 for head cutting, tail cutting and crushing. The post-roughing shearing device 4 is preferably a flying shear, including but not limited to a crank-connecting rod flying shear, and adopts a start-stop working system.
[0040] In one embodiment, if Figure 1 A post-finishing shearing device 6 is arranged on the discharge side of the finishing mill group 5, and the post-finishing shearing device 6 is mainly used for segmenting the rolled piece into multiple lengths; the post-finishing shearing device 6 preferably adopts a flying shear, including but not limited to a crank-connecting rod flying shear, and adopts a start-stop working system.
[0041] In addition, if Figure 1 A post-finishing roller table 7 is arranged on the discharge side of the finishing mill group 5 for conveying the rolled piece to the cooling bed for cooling. The post-finishing roller table 7 is preferably connected to the outlet side of the post-finishing shearing device 6 .
[0042] In one of the embodiments, a centralized rapid roll changing device is also arranged in the finishing mill group 5, which is used for rapid replacement of each rolling mill of the finishing mill group 5, thereby saving roll changing time to a great extent.
[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A rolling system for both medium-sized steel and high-quality round steel, comprising a roughing mill and a finishing mill, characterized in that: The rough rolling mill group includes 9 rough rolling mills, of which 4 rough rolling mills are vertical rolling mills and the other 5 rough rolling mills are horizontal rolling mills; the rough rolling mill group is arranged in the form of 1V-2H-3V-4H-5H-5V-6H-7H-7V; The finishing mill group includes 12 finishing mills, of which 8 finishing mills are universal mills, and the other 4 finishing mills are 2 horizontal mills and 2 vertical mills; the layout of the finishing mill group is 8H / U-9H / U-10H / U-11H / U-12H / U-13H-14H / U-15H / U-15V-16H-17H / U-17V; Among them, V stands for vertical rolling mill, H stands for horizontal rolling mill, and H / U stands for universal rolling mill.
2. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 1, characterized in that: All rough rolling mills are two-roll short stress line rolling mills.
3. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 1, characterized in that: In the finishing mill group, the two horizontal rolling mills and the two vertical rolling mills are all two-roller short stress line rolling mills.
4. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 1, characterized in that: A pre-rolling steel turning machine is arranged on the incoming material side of the rough rolling mill group.
5. The rolling system for rolling medium-sized steel and high-quality round steel as claimed in claim 1, characterized in that: A post-roughing shearing device is arranged between the roughing mill group and the finishing mill group.
6. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 5, characterized in that: The post-rough rolling shearing device adopts a flying shear.
7. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 1, characterized in that: A post-finishing shearing device is arranged on the discharge side of the finishing mill group.
8. The rolling system for both medium-sized steel and high-quality round steel as claimed in claim 7, characterized in that: The post-finish rolling shearing device adopts a flying shear.