Method of controlling the continuous movement of stock being rol

Details Method of controlling the continuous movement of stock being rol Method of controlling the continuous movement of stock being rol

1979-11-20

1981-09-08

Mehr, Milton S.

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

72177, 72234, B21B 3700, B21D 514

Patent

active

042877385

ABSTRACT:
The rolls of each rolling mill stand of a rolling mill train are driven by a hydraulic turbine. A variable displacement pump is operated to apply hydraulic pressure to each of said turbines to operate the same at an infinitely variable speed. Any change of said hydraulic pressure applied to the turbine which drives a preceding one of said stands in response to the initial passing of the stock through a succeeding one of said stands is detected. The displacement of the variable displacement pump which operates the turbine which drives said succeeding stand is adjusted to correct the speed of the turbine which drives said succeeding stand to compensate the change of the hydraulic pressure which has thus been detected.

REFERENCES:
patent: 2363585 (1944-11-01), Grosser et al.
patent: 4079615 (1978-03-01), Noe

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