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2 189 876

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Application

2000123104/02, 2000-09-05

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Start date

2000-09-05

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Actual filing date

2000-09-05

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Published

2002-09-27

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Inventor

Garber Eh.A.Naumchenko V.P.Abramenko V.I.Gorelik P.B.Kuznetsov V.V.Trajno A.I.

(73)

Holder

Otkrytoe Aktsionernoe ObshchestvoNauchno-Issledovatel'Skaja Laboratorija Abrazivno-Poroshkovoj Ochistki Prokata Ot Okaliny Ran

CONTINUOUS STRETCH COLD ROLLING METHOD Russian patent published in 2002 - IPC

Abstract RU 2189876 C2

FIELD: manufacture of rolled products. SUBSTANCE: method involves determining yield limit of strip σy in each roll mill stand for various steel grades; maintaining specific stretching value σs by setting the value of coefficient Cσ, which is the ratio of σs:σy. Method is characterized in that maximum allowable value of C Cσ = Cσm is set; coefficient Ct of stretch instability as ratio of maximum deviation among front and rear stretch values from nominal technologically set value and this nominal stretch value is additionally determined; angle γ between line connecting centers of working and supporting rolls and vertical plane is determined; angle β3 between line connecting centers of working and supporting rolls and line of acting force generated between rolls upon slowing down of roll mill is determined; thickness of strip and rolling force are measured in each roll mill stand; specific stretch values are maintained in individual gaps between roll mill stands. EFFECT: increased efficiency and enhanced reliability in operation by providing stable position of working rolls at variable stretch and rolling force values. 1 dwg, 1 tbl

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RU 2 189 876 C2

Authors

Garber Eh.A.

Naumchenko V.P.

Abramenko V.I.

Gorelik P.B.

Kuznetsov V.V.

Trajno A.I.

Dates

2002-09-27—Published

2000-09-05—Filed

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