Eccentric furnace roller device for prolonging nodulation period of furnace roller of normalizing pickling line
By using an eccentric furnace roller device in the normalized pickling machine unit, the oxide is shaken off by using the jittering effect of strip steel, the problem of nodules formation of furnace rollers is solved, the nodule cycle is extended, and product quality and production line efficiency are improved.
Patent Information
- Application Number
- CN202411652956.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-03-21
AI Technical Summary
The furnace rollers of the normalized pickling unit are prone to nodules during operation, resulting in scratches on the surface of the strip, affecting product quality and material yield, and the nodule cycle is uncertain, resulting in frequent machine replacement and high spare parts consumption.
The eccentric furnace roller device is adopted, by setting the eccentric distance between the rotation center of the furnace roller and the geometric center, the strip steel can shake up and down during the rolling process, shake off the oxide on the surface, and reduce the attachment of oxide to the surface of the furnace roller, thereby extending the nodule cycle.
It effectively reduces oxide residues on the surface of the furnace roller, extends the nodule cycle of the furnace roller, reduces product losses and spare parts consumption, and improves equipment operation stability and production line efficiency.
Smart Images
Figure CN119657666A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of strip steel rolling in the metallurgical industry, and in particular to an eccentric furnace roller device for extending the nodule formation period of a furnace roller of a normalizing and pickling unit. Background Art
[0002] The furnace rollers of the normalized pickling unit gradually begin to form nodules under different furnace atmospheres, with a nodule cycle of 3 to 4 months. The mechanism of nodule formation is unclear, and most manufacturers use periodic replacement to ensure the condition of the furnace rollers. There is uncertainty in the nodule formation of the furnace rollers of the normalized pickling unit, and the nodules are easy to scratch the strip steel, which restricts the improvement of the yield rate.
[0003] When the furnace rollers of the normal chemical pickling unit are in operation, the iron oxide brought into the strip adheres to the roller surface and gradually accumulates into nodules of 1 to 2 mm, which can easily scratch the surface of the strip and seriously affect the surface quality of the strip. The nodule conditions of each furnace section of the normal chemical pickling unit are different. The nodule cycle is about 3 months. The nodules gradually increase over time. In the fourth month, the nodules are likely to scratch the strip. The amount of waste generated by the normal chemical unit due to furnace roller nodules and scratches is about 900 tons per year. Due to the problem of furnace roller nodules, the normal chemical unit currently needs to extract 70% of the furnace rollers for repair each time it is repaired, and use them after secondary turning. Furnace roller nodules restrict the stability of product quality, restrict the improvement of the yield rate, and limit the efficiency of the production line.
[0004] In view of the above reasons, extending the furnace roller nodule cycle is of great significance to the production line efficiency, which helps to improve the equipment operation stability, reduce product losses caused by furnace roller nodules, reduce the consumption of furnace roller spare parts, and improve the production line efficiency. Summary of the invention
[0005] In order to solve the above technical problems, the present invention provides an eccentric furnace roller device for extending the furnace roller nodulation period of a normalizing pickling unit. The technical solution adopted is:
[0006] An eccentric furnace roller device for extending the nodule formation period of a furnace roller of a normalizing pickling unit comprises an upper furnace roller 1 and a lower furnace roller 2, and a strip steel 3 is located between the upper furnace roller 1 and the lower furnace roller 2. The upper furnace roller 1 and the lower furnace roller 2 are both eccentric furnace rollers, and the geometric center 4 of the furnace roller is separated from the rotation center 5 by a certain eccentric distance e. When the upper furnace roller 1 and the lower furnace roller 2 are installed, the eccentric distances e are both located on the same side of the rotation center 4, and the rotation centers 4 of the two furnace rollers are located on the same vertical line.
[0007] Furthermore, the eccentricity e of the eccentric furnace roller is 0.5-1 mm.
[0008] Furthermore, the upper furnace roller and the lower furnace roller have the same structure, both including a roller and a roller neck, the roller neck is welded on both sides of the roller, and the thickness of the roller is about 10 to 13 mm.
[0009] Compared with the prior art, the present invention has the following beneficial effects:
[0010] During the rolling production process of the pickling unit strip, nodules are easily formed on the surface of the furnace roller under high temperature environment, thus affecting the surface quality of the strip. The eccentric furnace roller device adopted by the present invention, because the rotation center of the furnace roller is not at the geometric center, causes the strip to shake up and down within the allowable range, shakes off the oxide on the surface of the strip, and the residual oxide adheres to the surface of the furnace roller. Because the furnace roller is an eccentric furnace roller, the linear speed and centrifugal force of each point on the surface of the furnace roller are not equal, and the oxide particles attached to the surface of the furnace roller can also fall off under this effect. Thereby reducing the residual oxide on the surface of the furnace roller and extending the nodule cycle of the furnace roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the eccentric furnace roller device of the present invention.
[0012] Figure 2 It is a schematic diagram of the enlarged eccentricity of the eccentric furnace roller device of the present invention.
[0013] Figure 3 This is an enlarged schematic diagram of the eccentricity of the eccentric furnace roller in different working positions.
[0014] Figure 4 Schematic diagram of the structure of the eccentric furnace roller system of the present invention. DETAILED DESCRIPTION
[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0016] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides an eccentric furnace roller device for extending the nodule formation period of the furnace roller of the normalizing pickling unit, comprising an upper furnace roller 1 and a lower furnace roller 2, and a strip steel 3 is located between the upper furnace roller 1 and the lower furnace roller 2. The upper furnace roller 1 and the lower furnace roller 2 are both eccentric furnace rollers, and the geometric center 4 of the furnace roller is separated from the rotation center 5 by a certain eccentric distance e. When the upper furnace roller 1 and the lower furnace roller 2 are installed, the eccentric distances e are both located on the same side of the rotation center, and the rotation centers 5 of the two furnace rollers are located on the same vertical line.
[0017] The eccentric distance e of the eccentric furnace roller is 0.5-1 mm.
[0018] The upper furnace roller 1 and the lower furnace roller 2 have the same structure, both comprising a roller 6 and a roller neck 7. The roller neck 7 is welded to both sides of the roller 6. The thickness of the roller 6 is about 10 to 13 mm.
[0019] The furnace roller is an eccentric furnace roller, so that the rolled steel strip 3 can shake up and down within a certain range, and the oxide particles on the surface of the steel strip fall due to the vibration of the steel strip. The furnace roller is an eccentric furnace roller, so that the centrifugal force and speed at each point on the surface of the furnace roller are different, and the oxide particles attached to the surface of the furnace roller fall due to the centrifugal force.
[0020] The above-described embodiment only expresses one implementation of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.
Claims
1. An eccentric furnace roller device for extending the nodule formation period of furnace rollers in a normalizing pickling unit, characterized in that: The invention comprises an upper furnace roller (1) and a lower furnace roller (2), wherein the strip steel (3) is located between the upper furnace roller (1) and the lower furnace roller (2), wherein both the upper furnace roller (1) and the lower furnace roller (2) are eccentric furnace rollers, wherein the geometric center (4) of the furnace roller is spaced from the rotation center (5) by a certain eccentric distance e, wherein the eccentric distance e of the upper furnace roller (1) and the lower furnace roller (2) during installation is located on the same side of the rotation center, and the rotation centers (5) of the two furnace rollers are located on the same vertical line.
2. The eccentric furnace roller device according to claim 1, characterized in that: The eccentric distance e of the eccentric furnace roller is 0.5-1 mm.
3. The eccentric furnace roller device according to claim 1, characterized in that: The upper furnace roller (1) and the lower furnace roller (2) have the same structure, both comprising a roller (6) and a roller neck (7). The roller neck (7) is welded to both sides of the roller (6). The thickness of the roller (6) is about 10 to 13 mm.