CN101832870A - Equipment spot inspection method of high pressure water descaling device - Google Patents
Equipment spot inspection method of high pressure water descaling device Download PDFInfo
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- CN101832870A CN101832870A CN200910010675A CN200910010675A CN101832870A CN 101832870 A CN101832870 A CN 101832870A CN 200910010675 A CN200910010675 A CN 200910010675A CN 200910010675 A CN200910010675 A CN 200910010675A CN 101832870 A CN101832870 A CN 101832870A
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Abstract
The invention relates to an equipment spot inspection method of a high pressure water descaling device, disclosing a method of equipment spot inspection of a descaling device for hot rolled strip production. The method comprises the following steps of firstly, manufacturing a rolled piece simulation model and coating paints on the rolled piece simulation model; secondly, in the process of periodic repair and shutdown, transporting the rolled piece simulation model into a corresponding descaling device; thirdly, starting the descaling device to jet the rolled piece simulation model, and enabling the rolled piece simulation model to quit after jet; and fourthly, checking a jetting trace of the rolled piece simulation model, comparing the jetting trace with a trace of the same standard, and obtaining the conditions that whether a jetting angle of a nozzle varies or not, what is the abrasion degree of the nozzle, whether the nozzle is blocked or not and the like in the descaling device. The invention has the advantages of simple method and easy operation without increasing capital input and only needs to utilize ten minutes before periodic repair and shutdown to carry out check, analysis and evaluation on the descaling device by spot inspectors in the region.
Description
Technical field
The present invention relates to metallurgical equipment spot check technical field, particularly a kind of method that is used for the equipment point-detecting of hot-strip production descaling device.
Background technology
The high-pressure water descaling technology is the gordian technique that hot-strip is produced, and the quality of scale removal effect directly influences product quality.In hot-strip is produced, generally 3-5 high pressure water descaling device is set in roughing and finish rolling zone, stove pig iron skin and the intermediate blank regeneration iron sheet to steel billet carries out de-scaling respectively, to guarantee the surface quality of belt steel product.High-pressure water descaling imitates that device busy mesohigh nozzle often weares and teares, obstruction, scratching, makes high-pressure water descaling imitate the device scale removal effect and is affected.Because high-pressure water descaling is imitated the singularity of device, can't carry out the regular spot check of equipment, can only determine whether descaling device has problem by checking belt steel product surface iron sheet content, which descaling device is difficult to problem identificatioin again occurs on, even found problematic descaling device, stop production again and handle, substandard product has so not only taken place but also influenced output, can only carry out the correction maintenance of equipment.
Summary of the invention
The purpose of this invention is to provide that a kind of easy and simple to handle, state is directly perceived, the equipment point-detecting method of the high pressure water descaling device of accuracy of judgement, high efficiency.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of equipment point-detecting method of high pressure water descaling device, this method comprises the steps:
1) makes the rolled piece realistic model, and on the rolled piece realistic model, varnish with lacquer at thickness, the limit width in de-scaling district according to rolled piece;
2) when the equipment periodical repair is shut down, the rolled piece realistic model is transported in the corresponding descaling device by roller-way, and the rolled piece realistic model is still in the descaling device;
3) start descaling device the rolled piece realistic model is sprayed, AEI After End of Injection withdraws from the rolled piece realistic model;
4) check the injection vestige of rolled piece realistic model, will spray vestige and compare, situation the such as whether spray angle that can draw nozzle in the descaling device changes, whether nozzle abrasion degree and nozzle stop up with the standard vestige.
To spray vestige and compare with the standard vestige, and analyze the injection vestige of rolled piece realistic model: if registration is excessive, nozzle wear is described, it is big that jet angle becomes, and should change nozzle; If registration is too small, spray nozzle clogging is described, should dredge nozzle; If vestige is unintelligible or thick, spray nozzle clogging or wearing and tearing then are described, should change nozzle; If nozzle has departed from setting angle, illustrate that the nozzle setting angle changes, and should adjust the nozzle setting angle.
Compared with prior art, the invention has the beneficial effects as follows:
1) adopt this detecting method after, the duty that can reflect descaling device intuitively, technical basis is provided for maintenance of equipment, adjustment work, guarantees this device scale removal effect the best in a time between overhauls(TBO), and realized becoming the management mode of precognition maintenance by correction maintenance.
2) this method does not change the device structure of original device, does not increase fund input, and method is simple, easy to operate, only need utilize periodical repair to shut down preceding 10 minutes clock times, simultaneously the descaling device in this district is tested, analyzes, is estimated and get final product by each de-scaling district spot check person.
Description of drawings
Fig. 1 is the standard vestige figure of descaling device rolled piece.
Embodiment
A kind of equipment point-detecting method of high pressure water descaling device, this method comprises the steps:
1) makes the rolled piece realistic model, and on the rolled piece realistic model, varnish with lacquer at thickness, the limit width in de-scaling district according to rolled piece;
2) when the equipment periodical repair is shut down, the rolled piece realistic model is transported in the corresponding descaling device by roller-way, and the rolled piece realistic model is still in the descaling device;
3) start descaling device the rolled piece realistic model is sprayed, AEI After End of Injection withdraws from the rolled piece realistic model;
4) check the injection vestige of rolled piece realistic model, will spray vestige and compare, situation the such as whether spray angle that can draw nozzle in the descaling device changes, whether nozzle abrasion degree and nozzle stop up with the standard vestige.
To spray vestige and compare with the standard vestige, and analyze the injection vestige of rolled piece realistic model: if registration h is excessive, nozzle wear is described, it is big that jet angle becomes, and should change nozzle; If registration h is too small, spray nozzle clogging is described, thoroughly nozzle; If vestige is unintelligible or thick, spray nozzle clogging or wearing and tearing then are described, should change nozzle; If nozzle has departed from setting angle, promptly nozzle setting angle θ＜15 ° or＞15 °, illustrate that the nozzle setting angle changes, and should adjust the nozzle setting angle.
By above-mentioned check, analysis, the spot check result of descaling device is made evaluation, in periodical repair, this device is keeped in repair, adjusts.This method is easy and simple to handle, high efficiency, accuracy of judgement.
Embodiment 1: in hot-strip is produced, and descaling device before De-scaling box, the R1 milling train after the roughing zone is provided with stove generally speaking; Descaling device between De-scaling box and F1-F2 milling train before the finish rolling zone is provided with F1.
Can be divided into three de-scaling districts according to rolled piece thickness difference: R1 de-scaling district (De-scaling box, the preceding descaling device of R1 milling train behind the stove), R2 de-scaling district (descaling device before the R2 milling train), finish rolling de-scaling district (descaling device between the preceding De-scaling box of F1 milling train, F1-F2 milling train).With rolled piece at thickness, the limit width in three the de-scaling districts rolled piece realistic model that to make three length respectively be 8m, and bepaint.
Before each equipment periodical repair is shut down, the realistic model of rolled piece separately in three de-scaling districts is transported in the corresponding descaling device by roller-way, and is still in the descaling device.Start descaling device this moment sprays the rolled piece realistic model, and the time was 10 seconds.AEI After End of Injection rolled piece realistic model withdraws from.
Whether the injection vestige of checking the rolled piece realistic model meets the requirements, the standard vestige as shown in Figure 1, h is the registration of the two nozzle ejection waters surface among the figure, nozzle setting angle θ is 15 °, 1 for spraying vestige, 2 is rolled piece, vestige is high-visible.
Claims (2)
1. the equipment point-detecting method of a high pressure water descaling device is characterized in that, this method comprises the steps:
1) makes the rolled piece realistic model, and on the rolled piece realistic model, varnish with lacquer at thickness, the limit width in de-scaling district according to rolled piece;
2) when the equipment periodical repair is shut down, the rolled piece realistic model is transported in the corresponding descaling device by roller-way, and the rolled piece realistic model is still in the descaling device;
3) start descaling device the rolled piece realistic model is sprayed, AEI After End of Injection withdraws from the rolled piece realistic model;
4) check the injection vestige of rolled piece realistic model, will spray vestige and compare, situation the such as whether spray angle that can draw nozzle in the descaling device changes, whether nozzle abrasion degree and nozzle stop up with the standard vestige.
2. the equipment point-detecting method of a kind of high pressure water descaling device according to claim 1 is characterized in that, will spray vestige and compare with the standard vestige, analyze the injection vestige of rolled piece realistic model: if registration is excessive, nozzle wear is described, it is big that jet angle becomes, and should change nozzle; If registration is too small, spray nozzle clogging is described, should dredge nozzle; If vestige is unintelligible or thick, spray nozzle clogging or wearing and tearing then are described, should change nozzle; If nozzle has departed from setting angle, illustrate that the nozzle setting angle changes, and should adjust the nozzle setting angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010675A CN101832870A (en) | 2009-03-13 | 2009-03-13 | Equipment spot inspection method of high pressure water descaling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010675A CN101832870A (en) | 2009-03-13 | 2009-03-13 | Equipment spot inspection method of high pressure water descaling device |
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| Publication Number | Publication Date |
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| CN101832870A true CN101832870A (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910010675A Pending CN101832870A (en) | 2009-03-13 | 2009-03-13 | Equipment spot inspection method of high pressure water descaling device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623436A (en) * | 2016-10-19 | 2017-05-10 | 马鞍山钢铁股份有限公司 | Rolling device capable of preventing foreign matters from pressing in |
| 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 |
| CN108273859A (en) * | 2017-01-05 | 2018-07-13 | 鞍钢股份有限公司 | A kind of high pressure water descaling device detecting method |
| 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 |
| CN110238209A (en) * | 2019-06-28 | 2019-09-17 | 新余钢铁股份有限公司 | A method of detection device for descaling by high-pressure scale removal effect |
| CN111649923A (en) * | 2020-05-29 | 2020-09-11 | 首钢京唐钢铁联合有限责任公司 | Detection method and detection device for anti-stripping water header of finishing mill |
-
2009
- 2009-03-13 CN CN200910010675A patent/CN101832870A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623436A (en) * | 2016-10-19 | 2017-05-10 | 马鞍山钢铁股份有限公司 | Rolling device capable of preventing foreign matters from pressing in |
| CN106623436B (en) * | 2016-10-19 | 2019-09-24 | 马鞍山钢铁股份有限公司 | A kind of rolling mill assembly for preventing foreign matter to be pressed into |
| CN108273859A (en) * | 2017-01-05 | 2018-07-13 | 鞍钢股份有限公司 | A kind of high pressure water descaling device detecting method |
| 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 |
| CN110238209A (en) * | 2019-06-28 | 2019-09-17 | 新余钢铁股份有限公司 | A method of detection device for descaling by high-pressure scale removal effect |
| CN111649923A (en) * | 2020-05-29 | 2020-09-11 | 首钢京唐钢铁联合有限责任公司 | Detection method and detection device for anti-stripping water header of finishing mill |
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Application publication date: 20100915 |