Title:
ROLLING REDUCTION CONTROL METHOD FOR ROLLER LEVELER
Document Type and Number:
Japanese Patent JP3132946
Kind Code:
B2
Abstract:
PURPOSE: To provide the roll rolling reduction method for a roller leveler for straightening a flatness failure of a rolling mill with high accuracy.
CONSTITUTION: An ascending/descending stand is allowed to descend by tilting it properly on the entry A side by a tilting rolling reduction device 13 and initial setting is executed. Subsequently, with respect to a driving side wedge block 38d and a work side wedge block 38w, a driving side hydraulic cylinder 1d and a work side wedge block 1w are operated and a work side and a driving side of a straightening roll 8a on the entry are subjected to rolling reduction exactly by a prescribed rolling reduction. In this case, a position detecting means of the driving side wedge block 38d and the work side wedge block 38w detects a moving position to a reference position of each wedge block, compares and calculates both detected values by a controller 4, a hydraulic cylinder of the driving or work side is operated, the position of the wedge block is corrected, both the wedge blocks are moved smoothly and a flatness failure of a rolling mill 10 is straightened with high accuracy.
Inventors:
Juro Morita
Kojin Hisayoshi
Kojin Hisayoshi
Application Number:
JP10015293A
Publication Date:
February 05, 2001
Filing Date:
April 05, 1993
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B21D1/05; (IPC1-7): B21D1/05
Domestic Patent References:
| JP1113122A | ||||
| JP51114367A | ||||
| JP63157421U |
Attorney, Agent or Firm:
Takehiko Suzue (5 outside)