METHOD AND DEVICE FOR CONTROLLING FIXED DIAMETER ROLLING OF TUBE

WIPO Patent Application WO/2005/095013

A1

A method and a device for controlling the fixed diameter rolling of a tube. The fixed diameter rolling control method for the tube controlling the rotational speed of rolling rolls (21) disposed on stands when the tube end part of the tube (1) is rolled by the stands (2) of a fixed diameter rolling mill is characterized in that the rotational speed control start times of the rolling rolls set for the specific stands are corrected based on the measured value of the wall thickness of the tube end part of the tube measured on the out-side of the fixed diameter rolling mill.

Inage, Takateru c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Okayama, Fumio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)

PCT/JP2005/006179

October 13, 2005

March 30, 2005

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Sumitomo Metal Industries, Ltd. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Inage, Takateru c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Okayama, Fumio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)

B21B37/18; B21B37/78; B21B17/14; B21B38/04; B21B37/16; B21B37/78; B21B17/00; B21B38/00; (IPC1-7): B21B37/78; B21B17/14; B21B37/18

Ohnaka, Minoru (Osaka-Hokushin bldg. 4F, 3-6 Minamisemba 2-chome, Chuo-ku, Osaka-sh, Osaka 81, 54200, JP)

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