METHOD AND DEVICE FOR CONTINUOUSLY DETECTING PARTIAL ROLLINGMATERIAL LENGTH EXISTING IN CONTINUOUS ROLLING SECTION

Japanese Patent JPS6099516

A

1. Method for the continuous detection of the partial rolled length, which is disposed in a continuous rolling train (2, 4, 6), of a rolled length which in a given case is still partially disposed outside the rolling train, wherein by pulse counting of the incoming head end in dependence on the passing by a forward measurment plane (S1 ) situated in the rolling train at the inlet end and a second measurement plane (S11 ) situated behing the rolling train at the outlet end as well at the outlet of a parting shears (7), a pulse measurement of the passage of the head end through a calibration path (S11 - S12 ) of known length as well as determination of the total rolled length after passage through the first measurement plane from the tail end of the rolled length and the cutting command of the parting shears is preset after determination of the most favourable parting cuts of the cooling bed length, characterised thereby, that a) the pulse sequence is counted continuously from the passing of the head by the first measurement plane (S1 ) to a pulse scale proportional to the peripheral roll speed of the rolls (2a) of a neighbouring roll stand and b) the pulse number, which corresponds to the rolled length disposed in the rolling train, is intermediately stored on passing by the second measurement plane (S11 ), c) the pulse number of the finished partial length beginning at the head end is detected to the same pulse scale in a calibration path (S11 - S12 and S12 - S13 ), which is of known length and begins at the second measurement plane (S11 ) and the proportional finished length is calculated therefrom, d) partial lengths of predetermined length are severed from the issuing head end and e) the pulse number of the head end, which is measurable in a calibration path (S12 - S13 ) situated at the outlet of the parting shears (7), of the finished length is detected after each parting cut and a mean value is formed from the sequence of the calibration measurements and f) the pulse number for the rolling train content between the first and the second measurement plane is calculated with the mean value of the individual calibration values in the calibration path to the remaining finished length on the passage of the tail end of the rolled length in the first measurment plane (S1 ) and the cutting program of the partial lengths, which are the last to be cut, is preset for the shears control (15).

YOOHANESU ERIKU FUREZE
HANSU EZAUUKURAZEN
KURAUSUUGEORUKU SHIYURANTSUKE
HANSUUPEETAA HESU

JP19190584A

June 03, 1985

September 14, 1984

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SCHLOEMANN SIEMAG AG

B21B37/00; B21B37/70; B23D36/00; (IPC1-7): B23D36/00

Toshio Yano

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