Detection of roller damage and/or misalignment in continuous...

Details Detection of roller damage and/or misalignment in continuous... Detection of roller damage and/or misalignment in continuous...

2005-01-18

2005-01-18

Chapman, John E. (Department: 2856)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C164S451000

Reexamination Certificate

active

06845286

ABSTRACT:
A method for detecting roller irregularities during on-line continuous casting of a metal comprises; i) continuously monitoring the changes in the mould level over time; ii) identifying large periodic influences affecting the mould level versus time function and their frequency, iii) comparing the frequency of the periodic influences of step ii) with predicted frequency harmonics based on a normal operation of the casting process and highlighting by comparison of the predicted and actual frequencies characteristics indicative of irregularities in roller behavior.

REFERENCES:
patent: 6289971 (2001-09-01), Kagawa
patent: 6466001 (2002-10-01), Hanazaki et al.
patent: 0 776 708 (1997-04-01), None
Patent Abstracts of Japan, vol. 1998, No. 12, Oct. 31, 1998, & JP 10 193053 A, (Sumitomo Metal Ind Ltd), Jul. 28, 1998.
Patent Abstracts of Japan, vol. 1998, No. 05, Apr. 30, 1998, & JP 10 005957 A (NKK Corp), Jan. 13, 1998.
Patent Abstracts of Japan, vol. 1999, No. 08, Jun. 30, 1999, & JP 11 077268 A (NKK Corp), Mar. 23, 1999.
Patent Abstracts of Japan, vol. 014, No. 478, Oct. 18, 1990, & JP 02 192863 A (Sumitomo Metal Ind Ltd), Jul. 30, 1990.
DATABASE WPI Section Ch, Week 199832, Derwent Publications Ltd., London, GB; AN 1998-370273, XP002181099 & JP 10 146658 A (Nippon Steel Corp), Jun. 2, 1998.

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