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Title:
鋼から継目無中空体を製造するための装置
Document Type and Number:
Japanese Patent JP2008543569
Kind Code:
A
Abstract:
The invention relates to an apparatus for making a seamless hollow body (10) from a solid round block (7) of steel with a diameter <95% of the diameter of the solid round block by means of a two-roll cross-rolling mill with a piercing mandrel (3) held between the inclined roll (1) and including a piercer (5) and at least one smoothing part (4) using pass-closing guides, or by means of a three-roll cross rolling mill with a piercing mandrel held between the inclined rolls and including a piercer and at least one smoothing part, wherein the distance of the rolls is adjusted in a particular manner at the narrowest cross-section (2) in relation to the diameter of the used round block, and the position of the piercing mandrel is adjusted in relation to the narrowest cross-section of the rollers.

Inventors:
Kummerring, Rolf
Gunter Manich
Application Number:
JP2008516128A
Publication Date:
December 04, 2008
Filing Date:
June 15, 2006
Export Citation:
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Assignee:
Fau und M Deutschland Gesellschaft Mitt Beschlenktel Haftung
International Classes:
B21B23/00; B21B19/04
Domestic Patent References:
JPH105820A1998-01-13
JPS6044110A1985-03-09
JPH05177221A1993-07-20
JPH08281311A1996-10-29
JPH1058013A1998-03-03
JP2001162307A2001-06-19
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto