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Patent Searching and Data


Title:
RAIL PRODUCING METHOD AND PRODUCING EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2002/102537
Kind Code:
A1
Abstract:
A rail producing method and producing equipment capable of effectively reducing bending at the ends of a rail and also cut−away waste, the rail producing method being characterized by comprising the steps of cooling a hot−rolled rail to room temperature while being kept at a substantially rolled length, and then cutting it to a specified length by at least three cold sawing−off machines simultaneously. Rail producing equipment characterized by comprising a conveying bed capable of moving a rail, cooled to room temperature while being kept at a substantially rolled length, in a rolling direction and&sol or a direction perpendicular to the rolling direction, and at least three cold sawing−off machines juxtaposed to the conveying bed.

Inventors:
ONODERA NORIAKI (JP)
SHIBATA MASAFUMI (JP)
MIWA MASANORI (JP)
FUJITA KAZUO (JP)
Application Number:
PCT/JP2002/005308
Publication Date:
December 27, 2002
Filing Date:
May 30, 2002
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
ONODERA NORIAKI (JP)
SHIBATA MASAFUMI (JP)
MIWA MASANORI (JP)
FUJITA KAZUO (JP)
International Classes:
B21B15/00; B21B43/00; B23D45/00; B23D45/10; B21B1/08; B21B38/00; B21B45/02; (IPC1-7): B23D45/10; B21B43/00
Foreign References:
JPS633696Y21988-01-29
JPH01299705A1989-12-04
JPH10314803A1998-12-02
JPH09248625A1997-09-22
JPH0420724B21992-04-06
JPS6158249B21986-12-10
JPS54138186U1979-09-25
JP2000288851A2000-10-17
JPH07108430A1995-04-25
Other References:
See also references of EP 1422007A4
Attorney, Agent or Firm:
Ishida, Takashi (ISHIDA & ASSOCIATES Toranomon 37 Mori Bldg. 5-, Toranomon 3-chome Minato-ku Tokyo, JP)
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