System for controlling bar cutter in steel bar line

Details System for controlling bar cutter in steel bar line System for controlling bar cutter in steel bar line

1986-05-30

1988-02-16

Bray, W. D.

Metal deforming

By use of roller or roller-like tool-element

With cutting of work or product

72 15, 83370, B21B 100

Patent

active

047246960

ABSTRACT:
A system for controlling a bar cutter in a steel bar line comprising a rolling length predicting circuit for calculating, on the basis of a scale loss coefficient, a predicted rolling length of a rolling bar material conveyed to the steel bar line, a flying shear cut instructing circuit responsive to the predicted length for determining a cutting length and for operating a flying shear to cut the rolling bar material in accordance therewith, a rolling length measuring circuit for determining an actual rolling length from the cut bar material, and a scale loss coefficient determining circuit for determining the scale loss coefficient based on the actual rolling length so as to correct the predicted rolling length and thereby reduce a cutting error.

REFERENCES:
"Improvement in Cold Shear Yield of Bar Mill by Computer System", Inazaki et al., Tsetsu-to-Hagane, Journal of the Iron and Steel Institute of Japan, Special Issue on Improvements of Yield in Rolling Processes and Developments of Rolling Theory", No. 15, vol. 67, Nov. 1981.
"Crop Shear Optimization and Control", Loose, Iron and Steer Engineer, Jul. 1984, pp. 41-48.
"Optimale Steuerung Rotierender Walzwerksscheren Mit Nikrorechner", Neue Hutte, 29, jg., H.9, Sep. 1984.

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