Apparatus for controlling the thickness of rolled products

Details Apparatus for controlling the thickness of rolled products Apparatus for controlling the thickness of rolled products

1978-12-28

1980-07-29

Mehr, Milton S.

Metal deforming

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

Metal deforming by use of roller or roller-like tool element

72 16, 72 20, 72245, B21B 3702, B21B 3708

Patent

active

042144647

ABSTRACT:
There is provided hydraulically-operated work roll gap control cylinders forming a closed-circuit hydraulic system during rolling, and there are also provided hydraulically-operated backup roll control cylinders to which is connected a rolled product thickness gauge in order to keep constant the work roll gap depending on the pressure existing in the closed-circuit hydraulic system. The apparatus is provided with a hydraulic volume compensator operating in conjunction with the closed-circuit hydraulic system of work roll gap control and is also provided with a logic module connected to said compensator. The volume of fluid contained in the closed-circuit system changes in response to the corrective signal characteristic of a deviation of the strip thickness from the specified gauge. The passage of the signal to the hydraulic volume compensator is cleared or blocked by a special transportation lag unit.

REFERENCES:
patent: 3416341 (1968-12-01), Dey et al.
patent: 3464245 (1969-09-01), Dowsing et al.

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