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Method of diagnosing roll

A diagnosis method, technology of roller spacing, applied in the field of roller diagnosis

Active Publication Date: 2013-12-11
NIPPON STEEL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method of diagnosing roll
  • Method of diagnosing roll
  • Method of diagnosing roll

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Embodiment Construction

[0050] One embodiment of the roller diagnosis method of the present invention will be described below.

[0051] figure 1 It is a side view schematically showing the dummy bar 1 equipped with the roll gap measurement device for performing the roll diagnosis method of the present embodiment. The dummy bar 1 has a plurality of connecting rod materials 1a and a shaft 1b, passes through a casting mold 2 from a tundish not shown in the figure, and uses the cast molten steel 3 as a guide to form an ingot passage between a plurality of rollers 4 and 5 move.

[0052] figure 2The bottom surface of the dummy bar 1 to which the above-mentioned roller gap measuring device is attached is shown. In this embodiment, sensor units 7 a , 7 b , and 7 c are respectively provided at both ends and the center of the sensor link 6 in the width direction of the dummy bar 1 . And these sensor units 7a, 7b, 7c are each provided with one roller gap measuring device S, respectively. And the sensor un...

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Abstract

Disclosed is a method of diagnosing a pair of rolls disposed opposite to each other on both sides of a cast piece passage in a continuous casting machine.  The method comprises a step of providing the result of measurement by measuring multiple times the interval between the pair of rolls when a dummy bar passes the cast piece passage at time intervals, a step of providing the trend of the time series of the differential values between the result of measurement and reference values, and a step of predicting a time at which the differential values reach or exceed a predetermined value according to the trend of the time series and determining the time when the pair of rolls break.

Description

technical field [0001] The present invention relates to a roll diagnosis method for knowing in advance the timing of roll replacement in a continuous casting machine. [0002] this application claims priority based on Japanese Patent Application No. 2008-130456 for which it applied to Japan on May 19, 2008, and uses the content here. Background technique [0003] The continuous casting machine includes a plurality of paired rolls (guide rolls) arranged in parallel along the ingot passage. The ingot passes through the ingot passage while being guided by these pair of rollers. However, if the gap between the counter rolls is abnormal, it may cause quality degradation such as center segregation and internal cracks of the ingot. Therefore, it is very important to properly maintain the distance between the pair of rolls, and for this reason, the distance between the pair of rolls has been measured (for example, refer to the following patent documents 1 and 2). [0004] Factors...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/128B22D11/08B22D11/16
CPCB22D11/20
Inventor 丸木保雄岩崎润哉山条悟矢野孝幸西原隆白神孝之
Owner NIPPON STEEL CORP
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