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Method for detecting failure of cooling nozzles of finish rolling working rolls

A cooling nozzle and fault detection technology, which is applied to rolls, length measuring devices, manufacturing tools, etc., can solve the problems that it is difficult to detect the normal operation of the cooling nozzle of the finishing rolling work roll, and achieve the effect of preventing the coating from solidifying too fast and making it easy to judge

Inactive Publication Date: 2017-05-24
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention solves the technical problem in the prior art that it is difficult to detect whether the cooling nozzle of the finishing rolling work roll is working normally by providing a detection method for the failure of the cooling nozzle of the finishing rolling work roll, and can quickly determine whether the cooling nozzle is working normally, ensuring The finish rolling process is carried out stably

Method used

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  • Method for detecting failure of cooling nozzles of finish rolling working rolls
  • Method for detecting failure of cooling nozzles of finish rolling working rolls

Examples

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Embodiment 1

[0040] see figure 1 and figure 2 Before the finish rolling process, the method for detecting the failure of the cooling nozzle of the finish rolling work roll provided by the present invention is used to detect whether the cooling nozzle can work normally. Finishing work roll 1 is made of scrap roll, and the coating is paint layer. The surface of the finishing work roll 1 is decontaminated and dried. When the temperature of the finishing work roll 1 is cooled to 30°C, paint is sprayed on the surface of the finish work roll 1, and the thickness of the paint layer is controlled to be 0.5mm. When the upper nozzle 3 and the outlet lower nozzle 5 are in normal operation, the injection areas on the finish rolling work roll 1 are consistent. When the surface of the coating is air-dried and the coating as a whole is in a soft state, the finishing work roll 1 is assembled in the finishing mill, and the time interval from spraying paint to starting to assemble the finishing work rol...

Embodiment 2

[0042] see figure 1 and figure 2 , Before the finish rolling process, the detection method of the finish rolling cooling nozzle provided by the present invention is used to detect whether the cooling nozzle can work normally. Select the finish rolling work roll 1 that has just been dismantled from the rolling mill for use, and the coating adopts a paint layer. The surface of the finishing work roll 1 is decontaminated and dried. When the temperature of the finishing work roll 1 is cooled to 45°C, paint is sprayed on the surface of the finish work roll 1, and the thickness of the paint layer is controlled to be 1.0 mm. When the upper nozzle 3 and the outlet lower nozzle 5 are in normal operation, the injection areas on the finish rolling work roll 1 are consistent. When the surface of the coating is air-dried and the coating is in a soft state as a whole, the finish rolling work roll 1 is assembled into the rolling mill, and the time interval from spraying paint to starting...

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Abstract

The invention relates to the technical field of finish rolling, in particular to a method for detecting failure of cooling nozzles of finish rolling working rolls. The method comprises the steps of arranging a coating on the surface of each finish rolling working roll; when the surface of each coating is air-dried and each coating is entirely in the soft state, assembling the finish rolling working rolls into a finish rolling machine; starting the inlet upper nozzle, the inlet lower nozzle, the outlet upper nozzle and the outlet lower nozzle to spray water; and according to marks on the coatings, judging whether the cooling nozzles work normally or not. According to the method for detecting failure of the cooling nozzles of the finish rolling working rolls, the coatings are arranged on the surfaces of the finish rolling working rolls, and through the distribution condition of the marks formed by impact, onto the coatings, of cooling water, whether the cooling nozzles are blocked or not and whether the distribution angles of the cooling nozzles are abnormal or not can be judged quickly; and stable proceeding of the finish rolling procedure is guaranteed.

Description

technical field [0001] The invention relates to the technical field of finish rolling, in particular to a method for detecting faults of cooling nozzles of work rolls in finish rolling. Background technique [0002] In the process of hot rolling and finishing, in order to ensure that the technical parameters of the roll shape such as the mechanical thermal crown of the finishing work roll of the finishing mill meet the requirements, the cooling water header of the finishing work roll is generally equipped with more nozzles, and the water volume of the nozzles is relatively large. . With the continuous extension of the machine's service time, the wear and aging of the nozzles and headers are becoming more and more serious. It is difficult to find the clogging of the cooling nozzles and the interference of the water spray fan surface through manual visual inspection in the rack. After the cooling nozzle is blocked, the temperature of the finishing work roll will rise sharply....

Claims

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Application Information

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IPC IPC(8): B21B38/00B21B27/10B21B27/02
CPCB21B38/00B21B27/02B21B2027/103
Inventor 王建功艾矫健王晓东张弛李东宁史金芳夏银锋周旬
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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