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.
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Inventors:
Kummerring, Rolf
Gunter Manich
Gunter Manich
Application Number:
JP2008516128A
Publication Date:
December 04, 2008
Filing Date:
June 15, 2006
Export Citation:
Assignee:
Fau und M Deutschland Gesellschaft Mitt Beschlenktel Haftung
International Classes:
B21B23/00; B21B19/04
Domestic Patent References:
JPH105820A | 1998-01-13 | |||
JPS6044110A | 1985-03-09 | |||
JPH05177221A | 1993-07-20 | |||
JPH08281311A | 1996-10-29 | |||
JPH1058013A | 1998-03-03 | |||
JP2001162307A | 2001-06-19 |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto