CN216501560U - High-pressure water descaling nozzle arrangement device - Google Patents
High-pressure water descaling nozzle arrangement device Download PDFInfo
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- CN216501560U CN216501560U CN202123077051.9U CN202123077051U CN216501560U CN 216501560 U CN216501560 U CN 216501560U CN 202123077051 U CN202123077051 U CN 202123077051U CN 216501560 U CN216501560 U CN 216501560U
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Abstract
The utility model relates to the field of high-pressure water descaling of a hot rolling production line, in particular to a high-pressure water descaling nozzle arrangement device which comprises nozzles, a high-pressure water pipeline and a hot steel plate blank, wherein the high-pressure water pipeline is uniformly provided with the nozzles, the high-pressure water pipelines are arranged above and below the hot steel plate blank, the arrangement of each nozzle is completely consistent, the horizontal deflection angles of each nozzle are on the same straight line, and the deflection angles are all 0 degree. After the structure is adopted, the residual defect rate of the striped iron oxide scale on the surface of the steel plate blank of the 2250 production line of the Tai-Gao hot continuous rolling mill is reduced to below 3 percent from 20 percent.
Description
Technical Field
The utility model relates to the field of high-pressure water descaling of a hot rolling production line, in particular to a high-pressure water descaling nozzle arrangement device.
Background
The 2250 production line of the Taigang hot continuous rolling mill is built and put into production in 2006, a matched descaling system is a conventional pressure 19MPa system, and the arrangement of a descaling nozzle adopts the conventional design. When some special varieties of steel such as TQ series are produced, the surface stripes and the incomplete descaling defects exist on the surface of the strip steel, and the defect rate reaches 20% when the defects are serious, so that serious loss is caused. Through a high-pressure descaling water hit test after painting the surface of the plate blank, the descaling of the overlapped part of the lap joint and the dislocation of the two nozzles is found to be incomplete and is highly similar to the defect of the steel plate. The utility model utilizes the mode that the horizontal deflection angle (gamma angle) of the nozzle is arranged at 0 degree to improve the local high-pressure water striking force, sprays the high-pressure water on the surface of the hot steel plate blank, and strikes and removes the iron scale (iron scale) generated on the surface in the heating furnace and the rolling process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a high-pressure water descaling nozzle arrangement device.
The purpose of the utility model is realized as follows: the high-pressure water descaling nozzle arrangement device comprises nozzles, a high-pressure water pipeline and a hot steel plate blank, wherein the nozzles are uniformly arranged on the high-pressure water pipeline, the high-pressure water pipelines are arranged above and below the hot steel plate blank, the arrangement of each nozzle is completely consistent, the horizontal direction deflection angle of each nozzle is on the same straight line, and the deflection angle is 0 degree.
Furthermore, the nozzles are uniformly arranged on the high-pressure water pipeline, and the distance between every two adjacent nozzles is 50-100 mm.
The utility model has the beneficial effects that:
after the structure is adopted, the residual defect rate of the striped iron oxide scale on the surface of the steel slab of the 2250 production line of the Tai-Gai hot continuous rolling mill is reduced to below 3 percent from 20 percent.
And (3) benefit calculation: 1. After the quality is improved, the defect rate is reduced to 3% from the current 20.3%, and degraded products are reduced by 17.3%; 2. the annual special steel yield is about 20 ten thousand tons; 3. price difference between degraded product and genuine product: 690 yuan/ton; 4. the annual economic benefit is analyzed and calculated as follows: 690 yuan/ton 20 ten thousand tons 17.3% =2387.4 ten thousand yuan, total creating efficacy 2387.4 ten thousand yuan throughout the year.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a diagram of practical application.
Fig. 3 is a high-pressure water impact force detection diagram using the device.
Wherein: 1. high-pressure water pipeline, 2. nozzle, 3. hot steel plate blank.
Detailed Description
According to the utility model, the arrangement mode of the descaling nozzles is changed, so that the local impact force is increased, and the strip-shaped iron oxide scale residual defects on the surface of the steel plate blank are effectively removed.
1. According to the traditional conventional design, the high-pressure water striking force of the lap joint part of two adjacent descaling nozzles is detected.
2. Adjusting the spraying angles of two adjacent descaling nozzles to detect the striking force.
3. The spray angle (0 degree) of the scale spray nozzles at the maximum striking force is selected and determined as the optimal arrangement.
4. And (4) changing the arrangement modes of all the descaling nozzles on site, and performing a high-pressure descaling water strike test after painting the surface of the plate blank.
5. Putting into practical production.
The arrangement of a descaling nozzle of a No. 1 manifold of a rough descaling box is as an example: two high pressure water pipe way distributions set up in hot steel plate base top and below, all are provided with fifty nozzles on two high pressure water pipe way, and the nozzle is evenly arranged, and the distance between two adjacent nozzles is 50mm, and the horizontal direction deflection angle of every nozzle all is on a straight line, and the deflection angle is 0. The number of the nozzles is determined by the distance between the hot steel plate blank and the hot steel plate blank high-pressure water pipeline, and the nozzles are practically arranged in a whole row according to the length of the high-pressure water pipeline, so that the distance between two adjacent nozzles is ensured to be 50-100 mm.
After the utility model is adopted, all the descaling nozzles are arranged at the deflection angles gamma of 0 degree, and the stripes are eliminated by verifying the high-pressure descaling hit test after painting the surface of the blank; after actual production, the defects of stripes and incomplete descaling are basically eliminated.
After the arrangement mode of the high-pressure water descaling nozzle is applied to the 2250mm production line of the Tai-Gai hot continuous rolling mill, the effect is good, and the economic benefit is obvious.
The device is mainly used for high-pressure water descaling systems (scale removal) of various hot rolling production lines. By changing the arrangement mode of the descaling nozzles, the local impact force is increased, and the strip-shaped iron oxide scale residual defects on the surface of the steel plate blank are effectively removed. The investment is small and the benefit is high.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (2)
1. High pressure water descaling nozzle arrangement device, its characterized in that: including nozzle, high-pressure water pipeline, hot steel plate blank, evenly be provided with the nozzle on the high-pressure water pipeline, the top and the below of hot steel plate blank all are provided with high-pressure water pipeline, and the arrangement of every nozzle is all unanimous completely, and the horizontal direction deflection angle of every nozzle all is on a straight line, and the deflection angle is 0.
2. A high pressure water descaling nozzle arrangement according to claim 1, wherein: the nozzles are uniformly arranged on the high-pressure water pipeline, and the distance between every two adjacent nozzles is 50-100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123077051.9U CN216501560U (en) | 2021-12-09 | 2021-12-09 | High-pressure water descaling nozzle arrangement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123077051.9U CN216501560U (en) | 2021-12-09 | 2021-12-09 | High-pressure water descaling nozzle arrangement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216501560U true CN216501560U (en) | 2022-05-13 |
Family
ID=81467134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123077051.9U Active CN216501560U (en) | 2021-12-09 | 2021-12-09 | High-pressure water descaling nozzle arrangement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216501560U (en) |
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2021
- 2021-12-09 CN CN202123077051.9U patent/CN216501560U/en active Active
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