CN110340157B - Method for testing working state of high-pressure descaling nozzle - Google Patents
Method for testing working state of high-pressure descaling nozzle Download PDFInfo
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- CN110340157B CN110340157B CN201910587461.6A CN201910587461A CN110340157B CN 110340157 B CN110340157 B CN 110340157B CN 201910587461 A CN201910587461 A CN 201910587461A CN 110340157 B CN110340157 B CN 110340157B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
Abstract
The embodiment of the invention provides a method for checking the working state of a high-pressure descaling nozzle, which comprises the following steps: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting; placing the target plate blank into a roller way by using a hoisting tool; when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; lifting the target-hitting plate blank out of a roller way, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target-hitting plate blank; therefore, only simple water splashing treatment is needed to be carried out on the target practice plate blank, the target practice plate blank is naturally rusted, after the target practice experiment is completed, the working state of the high-pressure descaling nozzle can be judged according to the rust condition on the plate blank, the operation is simple, and the inspection efficiency is ensured; and special coating is not needed to be used for carrying out special treatment on the target practice slab, so that the cost of the target practice is reduced.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a method for testing the working state of a high-pressure descaling nozzle.
Background
In the metallurgical industry, the hot rolling rough rolling high-pressure water descaling device can effectively remove the furnace iron sheet of the heating furnace, and the finish rolling high-pressure water descaling device can effectively remove the iron sheet generated in the rough rolling process. Therefore, the surface quality control of the hot rolled strip depends on whether the high pressure water descaling device can be operated efficiently. The operation of the high-pressure water descaling device depends on the water quality of high-pressure water and the working state of a descaling nozzle, and if the water quality has problems, the nozzle can be blocked, so that the descaling effect is poor, and the surface quality of strip steel is influenced. If the abrasion of the descaling nozzle is too large, the problems of low descaling hitting force and the like can be caused, and the surface quality of the strip steel is influenced. Therefore, how to ensure the working state of the descaling nozzle is very critical.
At present, the working state of the descaling nozzle is generally checked through a descaling and target practice, and a target blank needs to be specially treated (compared with painting or coating operation) before target practice, so that the operation is complex and the cost is high.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method for testing the working state of a high-pressure descaling nozzle, which is used for solving the technical problems that the plate blank needs to be specially processed, the testing method is complex, the testing efficiency is low and the cost is high in the method for testing the working state of the descaling nozzle in the prior art.
The invention provides a method for checking the working state of a high-pressure descaling nozzle, which comprises the following steps: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting;
placing the target plate blank into a roller way by using a hoisting tool;
when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank;
and hoisting the target hitting plate blank out of the roller way after the target hitting, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target hitting plate blank.
In the above scheme, before the target practice experiment, the water splashing treatment of the target practice plate blank includes:
performing first water splashing treatment on the target practice slab at least 48 hours before a target practice;
and performing secondary water splashing treatment on the target blank at least 24h before the target practice.
In the above scheme, the water splashing treatment of the target plate blank includes:
and placing the target plate blank on a plate blank support, and performing water splashing treatment on the target plate blank by using a water gun.
In the above scheme, if the target slab is a rough rolling descaling slab, before the water sprinkling treatment is performed on the target slab, the method includes:
and carrying out rough rolling descaling on the target plate blank by using a rough rolling descaling box.
In the scheme, when the target plate blank is subjected to target shooting, the opening time of the high-pressure descaling nozzle is 10-30 s.
In the above scheme, if the target plate blank is a finish rolling descaling plate blank, the target plate blank comprises two layers, the first layer of target plate blank is fixed above the second layer of target plate blank, and the length of the first layer of target plate blank is smaller than that of the second layer of target plate blank.
In the scheme, if the target plate blank is a finish rolling descaling plate blank, the thickness of one end of the target plate blank is 28mm, and the thickness of the other end of the target plate blank is 46 mm.
In the above scheme, if the target plate blank is a rough rolling descaling plate blank, the thickness of the target plate blank is 230 mm.
In the scheme, the length of the target practice slab is 5-10 m.
In the scheme, the width of the target practice slab is 1250 mm.
The embodiment of the invention provides a method for checking the working state of a high-pressure descaling nozzle, which comprises the following steps: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting; placing the target plate blank into a roller way by using a hoisting tool; when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; lifting the target-hitting plate blank out of a roller way, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target-hitting plate blank; therefore, only simple water splashing treatment is needed to be carried out on the target practice plate blank, the target practice plate blank is naturally rusted, after the target practice experiment is completed, the working state of the high-pressure descaling nozzle can be judged according to the rust condition on the plate blank, the operation is simple, and the inspection efficiency is ensured; and special coating is not needed to be used for carrying out special treatment on the target practice slab, so that the cost of the target practice is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method for verifying the operating condition of a high-pressure descaling nozzle according to an embodiment of the present invention;
fig. 2 is a schematic view of a slab support according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a finish rolling descaled slab according to an embodiment of the present invention.
Detailed Description
In order to solve the technical problems that a plate blank needs to be specially processed, the inspection efficiency is low and the cost is high due to the fact that the inspection method is complex in the prior art, the invention provides a method for inspecting the working state of a high-pressure descaling nozzle, which comprises the following steps: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting; placing the target plate blank into a roller way by using a hoisting tool; when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; and hoisting the target hitting plate blank out of the roller way after the target hitting, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target hitting plate blank.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The embodiment provides a method for checking the working condition of a high-pressure descaling nozzle, which comprises the following steps as shown in figure 1:
s110, before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting;
in this embodiment, the target blank includes: rough descaling target slabs and fine descaling target slabs. Before the target practice experiment, the target practice plate blank is subjected to water splashing treatment, which comprises the following steps:
at least 48 hours before the target practice experiment, carrying out first water-sprinkling treatment on the target practice slab, and carrying out natural rusting;
and at least 24h before the target practice experiment, performing secondary water splashing treatment on the target practice slab to further rust the slab and ensure the target practice effect.
As an alternative embodiment, the target board blank is subjected to water-splashing treatment, which comprises the following steps:
and placing the target slabs on a slab support, and carrying out water splashing treatment on the target slabs by using a water gun or directly using a basin splashing mode.
Here, referring to fig. 2, the slab support is composed of two pillars, and the target slab can be directly hoisted to the slab support by using a hoisting tool, and the width of the slab support is slightly wider than that of the target slab; the slab support is of a steel structure.
As an alternative embodiment, when the target blank is a rough rolling descaling blank, in order to ensure the smoothness of the upper and lower surfaces of the descaling target blank, before the target blank is subjected to the water sprinkling treatment, the method comprises the following steps: and carrying out rough rolling descaling on the target plate blank by using a rough rolling descaling box.
And when the target slabs are finish-rolled descaling slabs, in order to achieve target shooting of slabs with different thicknesses at the same time, the target slabs comprise two layers, referring to fig. 3, a first layer of target slabs A is fixed above a second layer of target slabs B, and the length of the first layer of target slabs A is smaller than that of the second layer of target slabs B. For example, the length of the second layer of target blank B may be 1.5 to 2 times the length of the first layer of target blank a.
If the target plate blank is a finish rolling descaling plate blank, the thickness of one end of the target plate blank is 28mm, and the thickness of the other end of the target plate blank is 46mm, so that two thicknesses of 28mm and 46mm can be simultaneously targeted.
And if the target plate blank is a rough rolling descaling plate blank, the thickness of the target plate blank is 23 mm.
Here, the target slab is 5 to 10m long and 1250mm wide, regardless of whether the slab is a finish-rolled descaling slab or a rough-rolled descaling slab.
S111, placing the target plate blank into a roller way by using a hoisting tool; when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank;
after the target plate blank is rusted, the target plate blank is placed into a roller way by using a hoisting tool; when the target plate blank is a rough rolling descaling plate blank, moving the target plate blank into a rough descaling box, controlling a high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; the opening time is generally 10 to 30s, preferably 20 s.
When the target plate blank is a finish rolling descaling plate blank, one end of the target plate blank can be moved into a finish rolling descaling box, a high-pressure descaling nozzle is controlled to be opened, the target plate blank is subjected to target shooting, and a target shooting experiment with the thinnest strip steel thickness is realized; the opening time is generally 10 to 30s, preferably 20 s.
After one end of the target plate blank is subjected to target shooting, the other end of the target plate blank is moved into a fine descaling box, a high-pressure descaling nozzle is controlled to be opened, the target plate blank is subjected to target shooting, and a target shooting experiment with the thickest strip steel thickness is realized; the opening time is generally 10 to 30s, preferably 20 s.
And S112, lifting the target hitting plate blank out of a roller way, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target hitting plate blank.
After the target hitting is finished, the target hitting plate blank after the target hitting is hoisted out of the roller way by utilizing a hoisting tool and placed on a plate blank support, the working state of the high-pressure descaling nozzle is judged according to the rust condition on the target hitting plate blank, and whether the high-pressure descaling nozzle has the problems of angle, abrasion, blockage and the like is accurately judged.
The method for testing the working state of the high-pressure descaling nozzle provided by the embodiment of the invention has the following beneficial effects that:
the embodiment of the invention provides a method for checking the working state of a high-pressure descaling nozzle, which comprises the following steps: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting; placing the target plate blank into a roller way by using a hoisting tool; when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; lifting the target-hitting plate blank out of a roller way, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target-hitting plate blank; therefore, only simple water splashing treatment is needed to be carried out on the target practice plate blank, the target practice plate blank is naturally rusted, after the target practice experiment is completed, the working state of the high-pressure descaling nozzle can be judged according to the rust condition on the plate blank, the operation is simple, and the inspection efficiency is ensured; and special coating is not needed to be used for carrying out special treatment on the target practice slab, so that the cost of the target practice is reduced.
Example two
In practical application, when the target plate blank is a rough rolling descaling plate blank, the thickness is 230mm, the length is 8m, and the width is 1250mm, the inspection process is as follows:
carrying out rough rolling descaling on the target plate blank by using a rough rolling descaling box;
performing first water-sprinkling treatment on the target practice plate blank 48h before the target practice experiment, and naturally rusting;
24h before the target practice, the target blank is subjected to secondary water-sprinkling treatment, so that the blank is further rusted.
Placing the target plate blank into a roller way by using a hoisting tool; moving the target plate blank into a rough descaling box, controlling a high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; the on time was 20 s.
After the target hitting is finished, hoisting the rough rolling descaling plate blank back to the target hitting support; the working state of the high-pressure descaling nozzle is judged according to the rust condition on the target plate blank, and whether the high-pressure descaling nozzle has the problems of angle, abrasion, blockage and the like is accurately judged.
When the target plate blank is a finish rolling descaling plate blank, the thickness is 23-46 cm, the length is 10m, the width is 1250mm, and the inspection process is as follows:
carrying out first water splashing treatment on the target practice plate blank 58h before the target practice experiment, and naturally rusting;
and performing secondary water sprinkling treatment on the target blank 28h before the target practice, so that the blank is further rusted.
Placing the target plate blank into a roller way by using a hoisting tool; moving one end (with the thickness of 23cm) of the target plate blank into a fine descaling box, controlling a high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; the on time was 20 s.
Then moving the other end (with the thickness of 46cm) of the target plate blank into a fine descaling box, controlling a high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank; the on time is also 20 s.
After the target hitting is finished, hoisting the finish-rolled descaling plate blank back to the target hitting support; the working state of the high-pressure descaling nozzle is judged according to the rust condition on the target plate blank, and whether the high-pressure descaling nozzle has the problems of angle, abrasion, blockage and the like is accurately judged.
By utilizing the detection method provided by the embodiment I, only water splashing treatment is needed to be carried out on the target plate blank, the target plate blank naturally rusts, special coating treatment is not needed to be carried out on the surface of the plate blank, and the operation is simple. And the finish rolling descaling plate blanks are made into plate blanks with different thicknesses, the finish rolling descaling plate blanks with the thicknesses of 28 cm and 46cm can be simultaneously inspected, and quick target shooting can be realized without investing other costs.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method of verifying the operating condition of a high pressure descaling nozzle, the method comprising: before a targeting experiment, carrying out water splashing treatment on a targeting plate blank, and carrying out natural rusting;
placing the target plate blank into a roller way by using a hoisting tool;
when the target plate blank moves into a descaling box, controlling the high-pressure descaling nozzle to be opened, and performing target shooting on the target plate blank;
and hoisting the target hitting plate blank out of the roller way after the target hitting, and judging the working state of the high-pressure descaling nozzle according to the rust condition on the target hitting plate blank.
2. The method of claim 1, wherein the subjecting of the target board blank to a splash water treatment prior to the target practice comprises:
performing first water splashing treatment on the target practice slab at least 48 hours before a target practice;
and performing secondary water splashing treatment on the target blank at least 24h before the target practice.
3. The method of claim 1, wherein the subjecting the target mat to a water-splash treatment comprises:
and placing the target plate blank on a plate blank support, and performing water splashing treatment on the target plate blank by using a water gun.
4. The method of claim 1, wherein the pre-watering treatment of the target slab, if the target slab is a rough rolled descaled slab, comprises:
and carrying out rough rolling descaling on the target plate blank by using a rough rolling descaling box.
5. The method according to claim 1, wherein the high pressure descaling nozzle is opened for 10 to 30 seconds when the target blank is subjected to target striking.
6. The method of claim 1, wherein if the target slab is a finish-rolled descaled slab, the target slab comprises two layers, a first layer of the target slab being secured above a second layer of the target slab, the first layer of the target slab having a length less than a length of the second layer of the target slab.
7. The method of claim 1, wherein if the target slab is a finish rolled descaled slab, the thickness of one end of the target slab is 28mm and the thickness of the other end of the target slab is 46 mm.
8. The method of claim 1, wherein the thickness of the target slab is 230mm if the target slab is a rough rolled descaled slab.
9. The method of claim 1, wherein the target blank has a length of 5 to 10 m.
10. The method of claim 1, wherein the width of the target blank is 1250 mm.
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| CN114453438A (en) * | 2022-01-06 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for evaluating cooling effect of roller cooling water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221095A (en) * | 2008-01-23 | 2008-07-16 | 广州珠江钢铁有限责任公司 | On-line detecting device and method for scale removing nozzle in roller mill descaling system |
| CN202180094U (en) * | 2011-06-28 | 2012-04-04 | 鞍钢股份有限公司 | Steel plate for checking status of high-pressure water descaling nozzle |
| CN104155088A (en) * | 2014-07-17 | 2014-11-19 | 北京首钢股份有限公司 | Device and method for target practice tests of high-pressure water descaling nozzles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286014A (en) * | 1985-06-12 | 1986-12-16 | Kawasaki Steel Corp | Descaling method for pipe |
| CN201322591Y (en) * | 2008-12-15 | 2009-10-07 | 武汉钢铁(集团)公司 | High pressure water dephosphorization machine water nozzle checking unit |
| CN202701028U (en) * | 2012-05-23 | 2013-01-30 | 河北钢铁股份有限公司承德分公司 | Special device for hot-rolling descaling machine impact test |
| CN203053695U (en) * | 2013-02-17 | 2013-07-10 | 唐山建龙实业有限公司 | Device for target shooting experiment of hot-rolling descaling nozzle |
| CN106825081A (en) * | 2017-03-16 | 2017-06-13 | 攀钢集团西昌钢钒有限公司 | The detection method of descaling jet operating mode |
| CN108405635A (en) * | 2018-02-27 | 2018-08-17 | 首钢京唐钢铁联合有限责任公司 | A method of examining hot rolling line scale removal effect |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221095A (en) * | 2008-01-23 | 2008-07-16 | 广州珠江钢铁有限责任公司 | On-line detecting device and method for scale removing nozzle in roller mill descaling system |
| CN202180094U (en) * | 2011-06-28 | 2012-04-04 | 鞍钢股份有限公司 | Steel plate for checking status of high-pressure water descaling nozzle |
| CN104155088A (en) * | 2014-07-17 | 2014-11-19 | 北京首钢股份有限公司 | Device and method for target practice tests of high-pressure water descaling nozzles |
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