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Method for measuring steel coil radius of strip steel reel coiler working line

A technology of coiling machine and operation line, applied in the direction of electric/magnetic diameter measurement, electromagnetic measuring device, etc., can solve the problems of metering rolled strip steel, unfavorable, large fluctuation, etc., and achieve stable operation, accurate data and fast speed Effect

Inactive Publication Date: 2015-11-18
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the value of the coil diameter R is usually calculated by the quotient of the linear velocity v of the strip steel and the rotational speed n of the coiler. This method has the problem of large fluctuations, and the error of the obtained coil diameter is relatively large, which directly affects The control of coil diameter accuracy is not conducive to accurate and stable measurement of the length of the coiled steel strip and the weight of the steel coil, and it is difficult to ensure the quality of the final product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present invention is used to measure the hot-rolled steel strip (thickness h=5mm) coil radius of a slitting line of a hot-rolling mill, comprising the following steps:

[0029] S1. Install the incremental encoder of the model hubneiPB+FGH2AK-1024G coaxially with the steering roller in front of the coiler. The pulse value n of each circle of the incremental encoder is 1024, and the diameter of the steering roller is D= 500mm, roll radius R 0 =380mm;

[0030] S2. Connect the signal output end of the incremental encoder with the signal input end of the counting module of the PLC;

[0031] S3. put the strip thickness parameter value (h=5mm) on the strip coiler operation line into PLC;

[0032] S4. When the steel coil head arrives at the measuring roller, start the counting module to read the pulse number (Md) output by the incremental encoder 1 =81920);

[0033] S5. will Md 1 =81920, D=500mm, n=1024 into the first formula

[0034] L=Md 1 ×(D×π÷n),

[0035] Calcu...

Embodiment 2

[0042] The present invention is used to measure the hot-rolled steel strip (thickness h=0.23mm) coil radius of a cold-rolling mill slitting line, comprising the following steps:

[0043] S1. Install the incremental encoder model ELCOEC58H12-H6PR-1024 coaxially with the steering roller in front of the coiler. The pulse value n of each circle of the incremental encoder is 1024, and the diameter of the steering roller is D= 400mm, roll radius R 0 =255mm;

[0044] S2. Connect the signal output end of the incremental encoder with the signal input end of the counting module of the PLC;

[0045] S3. putting the strip thickness parameter value (h=0.23mm) on the strip coiler operation line into PLC;

[0046] S4. When the steel coil head reaches the measuring roller, start the counting module and read the pulse number Md output by the incremental encoder 1 (Md 1 =460800);

[0047] S5. will Md 1 =460800, D=400mm, n=1024 into the first formula

[0048] L=Md 1 ×(D×π÷n),

[0049] C...

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Abstract

The invention relates to a method for measuring steel coil radius of a strip steel reel coiler working line. The method comprises the following steps: coaxially mounting an incremental encoder with a steering roller in front of the coiler; connecting the signal output end of the incremental encoder with the signal input end of a counting module of a PLC; inputting a strip steel thickness parameter value h on the strip steel reel coiler working line into the PLC; when the head of the strip steel arrives at a measuring roller, starting the counting module, reading the number Md1 of pulses which are output from the incremental encoder; substituting the number Md1 of the pulses into a first formula L=Md1*(D*(pi) / n), thereby calculating the length L of the strip steel which passes through the steering roller; and substituting the length L of the strip steel into a second formula R1=[(h*L+(pi)*R0<2>) / pi]<1 / 2>, thereby calculating a real-time steel coil radius R1. The method of the invention has advantages of high speed, high precision, stable operation and accurate data.

Description

technical field [0001] The invention relates to a method for measuring the radius of a steel coil, in particular to a method for measuring the radius of a steel coil in a strip coiler operation line. Background technique [0002] In the strip coiler operation line, the coil diameter is an important parameter, which has a direct impact on the speed of the entire line and the control of coiling tension. In the prior art, the value of the coil diameter R is usually calculated by the quotient of the linear velocity v of the strip steel and the rotational speed n of the coiler. This method has the problem of large fluctuations, and the error of the obtained coil diameter is relatively large, which directly affects The control of coil diameter accuracy is not conducive to accurate and stable measurement of the length of the coiled steel strip and the weight of the steel coil, and it is difficult to ensure the quality of the final product. Therefore, it is very necessary to design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/12
Inventor 周红夏悦
Owner 武钢集团有限公司
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