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Fault Diagnosis Method of Tension and Correction Force in Segment of Continuous Casting Machine

A continuous casting machine segment and fault diagnosis technology, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as difficult to find faults in the budding stage, blind spots in the field of view, and untimely fault detection, etc., to achieve Reduce the amount of change and failure time, improve the force condition of the slab, and improve the quality of the slab

Inactive Publication Date: 2015-12-23
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing inspection method for the abnormal points of force in the sector of the continuous casting machine is manual visual inspection, and the inspection content is limited to the naked eye observation of the wear of the roller surface, the collapse of the bearing, and the slag on the roller.
This method can only be stopped for inspection, and the fault detection is not timely; there is a blind angle of view, and it is difficult to detect the bearing collapse of the segmented roller; it is not easy to find the fault in the embryonic stage, and it is often not known until the roller does not rotate at all

Method used

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  • Fault Diagnosis Method of Tension and Correction Force in Segment of Continuous Casting Machine
  • Fault Diagnosis Method of Tension and Correction Force in Segment of Continuous Casting Machine
  • Fault Diagnosis Method of Tension and Correction Force in Segment of Continuous Casting Machine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Diagnosis object:

[0032] The first and second strands simultaneously cast the slab with a section of 230×1900.

[0033] 2. Diagnostic method:

[0034] S1. Use the industrial control software wincc to establish a fault diagnosis system;

[0035] S1.1 Establish the state parameter database of tension leveling machine equipment;

[0036] Through the statistics of the total tension and straightening force of various cross-section cast slabs poured by the continuous casting machine, the database of the total tension and straightening force of the tension leveling machine is established as shown in the following table:

[0037]

[0038] S1.2 Draw the pulling speed curve;

[0039] Taking 0-3m / min as the coordinate domain, according to the measured data, respectively draw the first-flow pulling speed curve V1 and the second-flow pulling speed curve V2;

[0040] S1.3 Draw the total tensile force curve;

[0041] Taking 0-1200kN as the coordinate domain, according to ...

Embodiment 2

[0049] 1. Diagnosis object:

[0050] The first and second strands simultaneously cast the slab with a section of 230×1800.

[0051] 2. Diagnostic method:

[0052] S1. is identical with embodiment one;

[0053] S2 checks whether there are hidden dangers;

[0054] The total tensile force curve T1 of the first stream and the total tensile force curve T2 of the second stream drawn in step S1.3 are as follows figure 2 shown in figure 2 Find the time corresponding to the time when the total tensile force curve T1 of the first stream and the total tensile force curve T2 of the second stream both start to be stable is t 1 =35min, read t respectively 1 The total tensile force of the first stream and the total tensile force of the second stream at =35min, the total tensile force of the first stream is 845kN, and the total tensile force of the second stream is 910kN, of which the total tensile force of the second stream has exceeded the database The corresponding total tensile fo...

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Abstract

The invention relates to a withdrawal and straightening force fault diagnosis method of a sector segment of a continuous casting machine. The withdrawal and straightening force fault diagnosis method includes the steps that an equipment state parameter database of a withdrawal and straightening machine is set up; a withdrawal speed curve, a total withdrawing and straightening curve, a flow casting tracing curve and a hidden danger segment withdrawing and straightening curve are drawn respectively according to measured data. If first total withdrawal and straightening force and second total withdrawal and straightening force do not exceed the range of the corresponding total withdrawal and straightening force in the database, hidden danger does not exist, and diagnosis is over; and otherwise, existence of the hidden danger is confirmed and the next step is executed; stressed abnormal points are determined, and the stressed abnormal points are verified. With the adoption of the withdrawal and straightening force fault diagnosis method of the sector segment of the continuous casting machine, under the same working rate of the casting machine, due to the fact that the hidden danger existing in the sector segment can be found in advance, the stressed condition of a casting blank is greatly improved, the quality of the casting blank is greatly improved, the crack occurrence rate of crack-sensitive steel is lowered to 3.5%, the commuted amount is effectively reduced, and the fault time is effectively shortened. The withdrawal and straightening force fault diagnosis method of the sector segment of the continuous casting machine is simple in operation, high in sensitivity, timely in detection and precise in positioning.

Description

technical field [0001] The invention relates to a fault diagnosis method, in particular to a fault diagnosis method for tensile and corrective force faults in sector segments of continuous casting machines. Background technique [0002] It is very important to identify the abnormal stress points in the continuous casting machine segment and then judge the fault type of the continuous casting machine segment to improve the stress status of the continuous casting slab. The existing inspection method for the abnormal points of stress in the continuous casting machine segment is manual visual inspection, and the inspection content is limited to the naked eye observation of the wear of the roller surface, the collapse of the bearing, and the slag on the roller. This method can only be stopped for inspection, and the fault detection is not timely; there is a blind angle of vision, and it is difficult to detect the collapse of the bearing of the segmented roller; it is not easy to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 都胜朝胡长义刘海袁作新余超关武章袁建钢谭志强
Owner 武汉钢铁有限公司
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