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Hot galvanizing sink roller shaft sleeve and on-line testing method for liner wear degree

A technology of wear degree and detection method, which is applied in the detection field, can solve the problems that the wear condition of the shaft sleeve cannot be detected, the sensor cannot be installed, etc., and achieve the effect of simple and convenient manufacturing and installation, and easy realization

Active Publication Date: 2008-09-24
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the sinking roller works in high-temperature molten zinc, the sensor cannot be installed, so the existing technology cannot detect the wear of the shaft sleeve

Method used

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  • Hot galvanizing sink roller shaft sleeve and on-line testing method for liner wear degree
  • Hot galvanizing sink roller shaft sleeve and on-line testing method for liner wear degree
  • Hot galvanizing sink roller shaft sleeve and on-line testing method for liner wear degree

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Embodiment Construction

[0034] see Figure 1a , Figure 1b , the sinking roll 1 is in a zinc pot 16 filled with molten zinc liquid, and the sinking roll 1 includes a shaft sleeve 2, a bushing 3 and a roll arm 4;

[0035] There is a scraper device in the zinc pot 16, wherein, the scraper head 11 is in contact with the surface of the sinking roller 1, the knife bar 10 is fixed on the support 12 through the hinge point 5 (point B), and the upper end of the knife bar 10 is also fixed on the on bracket 12. A linear variable differential transmission displacement sensor 7 is installed on the piston of the hydraulic cylinder 6 to measure the stroke of the piston, and the output of the displacement sensor 7 is connected to the signal acquisition processor 8, and the acquisition and processor 8 is used as a linear variable differential Signal conditioning, acquisition and calculation of the wear amount of the dynamic transmission displacement sensor, and the wear amount calculation result and alarm informati...

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Abstract

The invention discloses an online detecting method for the attrition rate of a pot galvanizing sink roll shaft sleeve and a bush. The method includes that a zinc pot device is provided with a scraper device for preventing the surface of the sink roll from sticking zinc; the head of the scraper is contacted with the roll surface of the sink roll and reciprocates along the length direction of the roll body; a scraper rod is fixed on a bracket on a hinged point; the upper end of the scraper is also fixed on the bracket through a hydraulic cylinder; therefore, the piston of the hydraulic cylinder is proportional to the displacement of the scraper; the attrition capacity of the bearing of the sink roll is directly calculated by mounting a displacement sensor on the hydraulic cylinder to measure the stroke of the piston of the hydraulic cylinder. The invention can online detect the attrition rate of the pot galvanizing sink roll shaft sleeve and the bush in real time, provides instruction for the maintenance and replacement of the sink roll, avoids the unnecessary wastes caused by replaying the roll in ahead and the roll imprint appeared on the surface of a steel belt caused by excessive attrition as well as the worn out of the shaft sleeve and the bush when serious and even serious accident of shaft head crack.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to an on-line detection method for the wear degree of hot-dip galvanizing sinking roll sleeves and bushings in cold-rolling continuous hot-dip galvanizing equipment in iron and steel plants. Background technique [0002] The modern and advanced strip steel continuous hot dip galvanizing production line uses zinc pot equipment to realize the galvanizing operation of the strip steel surface. see Figure 1a , Figure 1b , used in the strip hot-dip galvanizing process sinking roll equipment, the roll is below the zinc liquid level of the zinc pot 16. During continuous hot-dip galvanizing, the direction of the steel strip 15 is changed by the sinking roll 1 dipped in the zinc liquid (temperature is 460-480°C), that is, it changes from entering the galvanizing pot to exiting the galvanizing pot, and the galvanized layer is solidified and cooled. . The sinking roller 1 which rotates w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06
Inventor 周永张亚林朱超姚舜
Owner BAOSHAN IRON & STEEL CO LTD
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