Roll shape structure of reversible vertical rolling mill for rough rolling of strip steel
By designing the roll profile structure of a reversible vertical roll mill for strip roughing, the problem of tilting and overturning during the rolling of strip billets with large narrowing specifications in traditional mills has been solved, thereby improving product accuracy and efficiency. It is suitable for the steel manufacturing and precision machining industries.
Patent Information
- Application Number
- CN202520538748.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional roughing vertical roll mills lack special roll design, which makes them prone to tilting and overturning when rolling strips with larger narrower specifications, affecting product quality and production safety.
Design a reversible vertical roll mill roll structure for strip roughing, including roll body and shaft head. The roll body is provided with roll groove to prevent overturning and tailing, inclined roll surface and stepped groove. It is suitable for strip blanks with larger narrowing specifications of 20 mm and above, increases the narrowing capacity of vertical roll and prevents strip blanks from tilting and overturning.
It effectively prevents strip tilting and overturning, ensures product width accuracy, improves rolling efficiency, reduces continuous casting modification time, improves production line efficiency, and provides high-quality products for downstream users.
Smart Images
Figure CN223916291U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of rolling mill roll, especially relates to a strip steel rough rolling reversible vertical roll mill roll type structure. BACKGROUND
[0002] The strip steel rough rolling reversible mill is generally composed of a flat roll mill and a vertical roll mill, can complete forward and reverse rolling on the same set of equipment, generally has 5 passes of flat roll rolling and 3 passes of vertical roll rolling, and the odd passes are 1, 3 and 5. It is mainly composed of a rack, a roll, a transmission mechanism and a hydraulic system, a metal blank is sent into the rolling mill through the transmission mechanism, and the metal blank is pressed into a plate or strip with a required thickness through rolling of continuous rolls under high pressure. The reversible mill is suitable for producing high-quality and high-precision steel strips, steel plates and metal sheets and is widely applied to the steel manufacturing industry and the precision machining industry. The vertical roll mill refers to equipment used in the whole rolling process from raw materials to finished products, has the advantages of high rigidity of the mill, high quality of the strip and time and labor saving in roll replacement. The vertical roll is an important part of the vertical roll mill equipment, is mainly composed of a bearing seat and a shaft and is used for supporting and rotating shaft mechanisms. It mainly plays the following roles in mechanical equipment: support and positioning: ensure that the shaft mechanism can stably and accurately operate. Side correction: in the equipment such as the rolling mill, the vertical roll is used for correcting the side of a rolled piece, controlling the width of the steel plate, reducing cutting loss and improving the yield of the steel. Width control and shape improvement: in the rolling process, the vertical roll can control the width of the rolled piece and improve the head and tail geometry. Limiting deviation: in the conveying belt equipment, the vertical roll is used for limiting deviation of the conveying belt and ensuring stable conveying of materials.
[0003] The traditional rough rolling vertical roll mill has no special roll type design, and Figure 3 When a single-diameter roll is used to roll a strip blank with a large narrowing (more than 20 mm), the roll is prone to tilting, overturning and tailing due to slipping, thereby generating a large head and tail, causing the product quality to be inconsistent and having a great influence on the coil shape, which causes great difficulty in production for downstream users. In particular, if the tail is too wide, it is very easy to cause a steel jam and other serious accidents, which affects the safe operation of production. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a strip steel rough rolling reversible vertical roll mill roll type structure, overcoming the defects of the prior art, being applicable to rough rolling of a strip blank with a large narrowing specification, preventing tilting and overturning of the strip blank, increasing the side pressure capacity of the vertical roll, ensuring product precision, expanding rolling of a width blank type to multiple span width intervals, reducing continuous casting modification time, improving rolling efficiency, providing strong guarantee for smooth production and providing high-quality products for downstream users.
[0005] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme:
[0006] A strip steel rough rolling reversible vertical roll mill roll shape structure, including roll body and shaft head, roll body is equipped with roll shape lower edge, the roll body surface is equipped with at least one roll shape groove for preventing overturning and tailing, the roll body above the roll shape groove is inclined roll surface, the width l of the roll shape groove is 60-80mm, the height t is 80-230mm, the height t of the roll shape groove corresponds to the thickness of the billet.
[0007] Further, the inclined roll surface is located at the upper part of the roll body, and the roll body diameter is large at the top and small at the bottom.
[0008] Further, the roll shape groove is a stepped groove with decreasing diameter from top to bottom, and the depth difference of adjacent stepped grooves is 15-25mm, corresponding to 1, 3 and 5 rolling passes in multiple passes.
[0009] Further, the height p of the roll shape lower edge is 50-80mm, and the width n from the bottom of the roll shape groove is 170-255mm.
[0010] Further, the depth m of the roll shape groove on the roll shape lower edge is 2-5mm.
[0011] Further, the inclination angle a of the inclined roll surface is 1.3-1.4°.
[0012] Further, the width of each step of the stepped groove is 50-100mm.
[0013] Compared with the prior art, the beneficial effects of the present application are:
[0014] 1) The roll shape is suitable for larger narrowing specifications of strip billets above 20mm, increases the vertical roll narrowing capacity, prevents the strip billet from tilting and overturning, and ensures that the strip billet always works in the pass, which ensures the product width precision, especially the head and tail width size precision, provides a strong guarantee for smooth production, and provides high-quality products for downstream users;
[0015] 2) One width billet type can be expanded to roll multiple span width intervals, reducing the continuous casting modification time, greatly improving the rolling efficiency, and reducing the number of upstream continuous casting billet modification, greatly improving the production efficiency of the entire production line. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a roll shape structure schematic diagram of the embodiment one of the present application;
[0017] Figure 2 is a roll shape structure schematic diagram of the embodiment two of the present application;
[0018] Figure 3 is a roll shape structure schematic diagram in the original design technology;
[0019] In the figure: 1 - roll body, 2 - shaft head, 3 - roll profile lower edge, 4 - roll profile groove, 5 - stepped groove, 6 - inclined roll face, 7 - billet. DETAILED DESCRIPTION
[0020] The technical solutions of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are some of the embodiments of the utility model, but not all the embodiments.
[0021] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art, the specific embodiments needed in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the specific embodiments described below are some of the embodiments of the utility model, and other specific embodiments can be obtained by those skilled in the art without creative labor.
[0022] The components of the embodiments of the utility model described and shown in the specific embodiments can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the specific embodiments is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.
[0023] See Figure 1 It is a structure schematic view of one embodiment of the utility model strip steel rough rolling reversible vertical roll mill roll profile, including roll body 1 and shaft head 2, be equipped with roll profile lower edge 3 on roll body, at least one roll profile groove 4 that prevents overturning and tail throwing is arranged on the surface of roll body 1, the roll body above roll profile groove 4 is inclined roll face 6, the width l of roll profile groove 4 is 60-80mm, the height t is 80-230mm, the height t of roll profile groove 4 corresponds the thickness of billet. Inclined roll face 6 is located in the upper portion of roll body 1, the roll body diameter where inclined roll face 6 is located is large at the top and small at the bottom, the inclination angle α of inclined roll face 6 is 1.3-1.4 °, and the preferred value is 1.34 °. The height p of roll profile lower edge 3 is 50-80mm, and the width n from the groove bottom of roll profile groove 4 is 170-255mm. The depth m of roll profile groove 4 on roll profile lower edge 3 is 2-5mm. The roll profile is suitable for larger narrowing specifications of strip billet above 20mm, increases the narrowing capacity of vertical roll, can prevent the inclination and overturning of strip billet, ensures the product precision, greatly improves the efficiency, creates economic benefits, and provides strong guarantee for the smooth production.
[0024] See Figure 2The upper part of the roller body 1 is provided with an inclined roller surface 6. The roller groove is a stepped groove 5 with a diameter decreasing from top to bottom, and the depth difference of the groove bottom of adjacent stepped grooves is 15-25 mm. The stepped groove 5 corresponds to 1 rolling pass (the corresponding billet 7 has a thickness of t1), 3 rolling passes (the corresponding billet 7 has a thickness of t2), and 5 rolling passes (the corresponding billet 7 has a thickness of t3). The number of the stepped groove 5 can be increased according to the actual number of passes. The width of each step of the stepped groove is 50-100 mm.
[0025] The improved example one is used for many times after the technical transformation, and has good effects at present. In combination with the optimization of the billet type, the problem of the skew rolling is well solved. Taking the 180mm-thickness rough rolling billet of the medium-width strip production line of Lingang Steel as an example, the rough rolling is reversibly rolled for five times, and the stand roll 1 / 3 / 5 pass is put into use. The step roll type in the groove corresponding to the five passes is used, so that the lower part of the strip billet is embedded in the hole type in the stress process, the strip billet cannot be inclined and turned over, and the upper roll surface inclined surface taper tightly presses the strip billet. Similarly, according to the different rolling thicknesses of different passes, the step width of the stepped groove can be changed, so that the strip billet will not be inclined and turned over due to slipping when the specification is narrowed, so as to ensure that the strip billet always works in the hole type, thereby ensuring the width precision of the product, providing a powerful guarantee for the smooth production, and providing high-quality products for downstream users. At the same time, the number of the upper billet modification is reduced, and the production efficiency is greatly improved.
[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A structure of a roll shape of a roughing reversible vertical roll mill for a strip steel, comprising a roll body and a shaft head, a lower edge of the roll shape being provided on the roll body, characterized in that, The roller body surface is provided with at least one roller groove for preventing overturning and tailing, the roller body above the roller groove is an inclined roller surface, the width l of the roller groove is 60-80 mm, the height t of the roller groove is 80-230 mm, and the height t of the roller groove corresponds to the thickness of the billet.
2. A roll contour structure for a roughing reversible stand of a vertical roll mill for strip steel according to claim 1, characterized in that, The inclined roller surface is located at the upper part of the roller body, and the diameter of the roller body is large at the top and small at the bottom.
3. A roll shape structure for a rough rolling reversible stand of a vertical roll mill for a strip steel according to claim 1, wherein The roller groove is a stepped groove with a diameter decreasing from top to bottom, and the depth difference of the adjacent stepped groove bottoms is 15-25 mm, corresponding to the 1st, 3rd and 5th rolling passes in the multi-pass rolling.
4. A roll shape structure for a rough rolling reversible stand of a vertical roll mill for a strip steel according to claim 1, wherein The height p of the roller groove lower edge is 50-80 mm, and the width n from the groove bottom is 170-255 mm.
5. A roll shape structure for a rough rolling reversible stand of a vertical roll mill for a strip steel according to claim 1, wherein The depth m of the roller groove on the roller groove lower edge is 2-5 mm.
6. A roll shape structure for a rough rolling reversible stand of a vertical roll mill for a strip steel according to claim 2, characterized in that, The inclination angle α of the inclined roller surface is 1.3-1.4°.
7. A roll shape structure for a rough rolling reversible stand of a vertical roll mill for a strip steel according to claim 3, wherein The width of each step of the stepped groove is 50-100 mm.