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Non-contact hot rolled steel coil inner tower defect measuring method

An inner-tower, non-contact technology for hot-rolled steel coils, applied in measuring devices, optical testing flaws/defects, instruments, etc. Operation risk, easy operation, safety effect

Active Publication Date: 2012-11-14
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the steel coil is still in a high temperature state (above 500°C) just after coiling, on-site inspectors must brave the high temperature, get close to the steel coil, and use a steel ruler to measure, which greatly increases the labor intensity and operational risk of the on-site inspectors

Method used

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  • Non-contact hot rolled steel coil inner tower defect measuring method
  • Non-contact hot rolled steel coil inner tower defect measuring method
  • Non-contact hot rolled steel coil inner tower defect measuring method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A non-contact method for measuring the defects of the inner tower of the hot-rolled steel coil. The invention uses a measuring device to measure the length of the inner tower of the hot-rolled steel coil remotely. The specific steps are as follows:

[0038] 1) if figure 1 As shown, a hollow box 1 is set at a distance of 3000 mm from the inner tower of the steel coil. The side of the box 1 facing the steel coil is a light-transmitting plate 3, and the other sides are all opaque. The side opposite to the light-transmitting plate 3 A light source 2 is provided on the inner wall of the side box body 1; figure 2 As shown, the light-transmitting plate 3 adopts a window-sill structure design, the light-transmitting plate 3 includes an outer frame 5 and a light-shielding strip 6, the outer frame 5 is in a rectangular design, the light-shielding strips 6 are equidistantly arranged in parallel, and the two ends of the light-shielding strip 6 are aligned with the Two opposite si...

Embodiment 2

[0050] A non-contact method for measuring the defects of the inner tower of the hot-rolled steel coil. The invention uses a measuring device to measure the length of the inner tower of the hot-rolled steel coil remotely. The specific steps are as follows:

[0051] 1) if figure 1 As shown, a hollow box 1 is set at a position 3500mm away from the inner tower of the steel coil. The side of the box 1 facing the steel coil is a light-transmitting plate 3, and the other sides are all opaque. The side opposite to the light-transmitting plate 3 A light source 2 is provided on the inner wall of the side box body 1; figure 2 As shown, the light-transmitting panel 3 adopts a window-sill structure design, the light-transmitting panel 3 includes an outer frame 5 and a shading strip 6, the outer frame 5 is in a rectangular design, and the shading strips 6 are equidistantly arranged in parallel, and the width of the shading strip 6 is the same as The distances between two adjacent shading ...

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Abstract

The invention relates to a non-contact hot rolled steel coil inner tower defect measuring method. By using measuring equipment for remote measuring of the length of a hot rolled steel coil inner tower, the method comprises: first setting a hollow box at a position of certain distance from the steel coil inner tower, with one box side facing the steel coil being a light-transmission plate and the other sides being lightproof, and disposing a light source on a box inner wall opposite to the light-transmission plate; and switching on a power supply, utilizing a triangle similarity principle to calculate the size of the inner tower. With the characteristics of simple measuring process and convenient operation, the invention has no need for close contact with a hot steel coil, thereby reducing the operation difficulty and providing guarantee for the work security of operation staff.

Description

technical field [0001] The invention relates to a measurement method, in particular to a non-contact method for measuring inner tower defects of hot-rolled steel coils. Background technique [0002] Hot-rolled steel coil inner tower defect is a common appearance quality defect in the hot-rolled production process. The current measurement method is generally to enter the inspection line after the coiler has just been coiled. Since the steel coil is still in a high temperature state (above 500°C) just after coiling, on-site inspectors must brave the high temperature, get close to the steel coil, and measure with a steel ruler, which greatly increases the labor intensity and operational risk of the on-site inspectors. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art, and provides a convenient, safe and reliable non-contact method for measuring inner tower defects of hot-rolled steel coils. [0004] In order to solve the above probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01B11/02
Inventor 杨宏凯徐世帅阎东宇刘威白雪莲王健
Owner ANGANG STEEL CO LTD
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