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2 156 175

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IPC

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Application

98104604/02, 1998-02-23

(24)

Start date

1998-02-23

(22)

Actual filing date

1998-02-23

(45)

Published

2000-09-20

(72)

Inventor

Sinajskij G.V.Pitkin A.N.Korytin A.A.Sannikov V.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Tjazhelogo Mashinostroenija"

DEVICE FOR LIMITING OF STRIP THICKNESS REGULATION ON CONTINUOUS MULTISTAND COLD-ROLLING MILL Russian patent published in 2000 - IPC

Abstract RU 2156175 C2

FIELD: plastic metal working. SUBSTANCE: regulation of strip thickness in stand of cold-rolling mill is accompanied by change of strip tensioning before stand. Regulation of strip thickness shall be as quick as possible because of very high speed of strip motion. Such regulation is possible only within limited ranges of strip tensioning change. It is offered to effect this limitation in form of cutoff of action of strip thickness regulator by strip tensioning. Claimed device has instrument for measuring strip tensioning deviation before stand which is connected with input of dead zone and system of control of stand roll rotation speed. Device also has instrument for measuring of deviation from preset thickness of strip after stand, and comparison element. Instrument for measuring of strip thickness deviation is feed forwarded with system of control of stand roll rotation speed which is applied with positive delayed feedback and output of dead zone unit is feed forwarded via comparison element. EFFECT: higher efficiency and reliability of regulation of strip thickness. 1 dwg

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RU 2 156 175 C2

Authors

Sinajskij G.V.

Pitkin A.N.

Korytin A.A.

Sannikov V.N.

Dates

2000-09-20—Published

1998-02-23—Filed

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