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Patent Searching and Data


Title:
RETRACT MANDREL MILL AND METHOD FOR ROLLING TUBING
Document Type and Number:
WIPO Patent Application WO/2011/039943
Kind Code:
A1
Abstract:
Disclosed are a retract mandrel mill and a method for rolling tubing using the mandrel mill. The retract mandrel mill is provided with a mandrel mill and an extractor. The mandrel mill includes a mandrel bar and is for rolling a tubing wherein the mandrel bar has been inserted. The extractor is for extracting the mandrel bar from the tubing which has been rolled by the mandrel mill. The distance between the mandrel mill and the extractor is adjustable, thus it is not necessary to increase the length of the tubing to be stretch rolled, even when rolling unusually short tubing, and wear to the mandrel bar can be limited, enabling efficient and good-yield rolling.

Inventors:
YAMANE, Akihito (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
Application Number:
JP2010/005368
Publication Date:
April 07, 2011
Filing Date:
September 01, 2010
Export Citation:
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Assignee:
SUMITOMO METAL INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目5番33号 Osaka, 〒5410041, JP)
International Classes:
B21B17/04; B21B19/10; B21B23/00
Attorney, Agent or Firm:
MORI, Michio et al. (M. MORI PATENT OFFICE, 17-23 Higashinaniwa-cho 5-chom, Amagasaki-shi Hyogo 92, 〒6600892, JP)
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