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Patent Searching and Data


Title:
METHOD FOR PREVENTING EDGE MARK OF SEAMLESS STEEL PIPE
Document Type and Number:
Japanese Patent JPS59141307
Kind Code:
A
Abstract:

PURPOSE: To remove easily the seizure of caliber end and to prevent edge mark by pressing a grinding wheel,having circular-arcuate surface corresponding to a groove of semicircular caliber-end of a finishing mill, against said caliber end with the aid of a spring, and grinding the caliber end.

CONSTITUTION: A grinding wheel 1 having circular-arcuate surface is attached to a bearing stand 2 which is supported by supporting rods 3, 3', and the length of the rods 3, 3' is made adjustable by inserting the rod 3' into the rod 3 and fixing them with a bolt 7. Further, the supporting rod 3' is pivotally supported 5 by a bed 6 and tilted by a spring 4. A wheel 1 holding jig constituted of above-mentioned parts is fixed to a mill housing 8 by bolts 9, and the wheel 1 is pressed by the spring 4 to closely engage with the semicircular caliber-end of the roll of a mill in a hot seamless steel pipe manufacturing line. Because the caliber end is always ground and produced seizure is immediately removed by the wheel 1, a succeeding steel pipe is prevented from generating edge marks.


Inventors:
SHIROSA NORIO
WATANABE ISAMU
OKUJIMA KOUKI
Application Number:
JP1543683A
Publication Date:
August 14, 1984
Filing Date:
February 03, 1983
Export Citation:
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Assignee:
SUMITOMO METAL IND
International Classes:
B21B17/14; B21B19/10; (IPC1-7): B21B19/10
Attorney, Agent or Firm:
Hirose Shoichi