Title:
【発明の名称】例えば高合金鋼又は過共折鋼から成る棒材又は管材等の熱間仕上げの延伸された製品の製造方法
Document Type and Number:
Japanese Patent JPH11503491
Kind Code:
A
Abstract:
PCT No. PCT/DE96/00501 Sec. 371 Date Nov. 10, 1997 Sec. 102(e) Date Nov. 10, 1997 PCT Filed Mar. 12, 1996 PCT Pub. No. WO96/31628 PCT Pub. Date Oct. 10, 1996The invention relates to a process for producing hot-worked elongated products, such as bars or tubes, from high-alloy or hypereutectoid steel in which a feedstock is heated to a deformation temperature and undergoes at least one deformation step. Following the at least one deformation step, the deformed feedstock is either cooled or heated at a specific temperature to achieve a uniform temperature distribution throughout the length and thickness of the deformed feedstock. Next the deformed feedstock is reheated to a temperature below the deformation temperature. The reheated feedstock is continuously rolled in a multi-stand reducing mill to its final size and then cooled by ambient air.
Inventors:
Cron, Heinz
Kutzenberger, Karl Heinz
Gunnig, Mannich
Elephant gustav
Kutzenberger, Karl Heinz
Gunnig, Mannich
Elephant gustav
Application Number:
JP52984596A
Publication Date:
March 26, 1999
Filing Date:
March 12, 1996
Export Citation:
Assignee:
Mannesmann Actien Gezelshaft
International Classes:
C21D8/06; C21D8/10; C22C38/00; C22C38/18; B21B3/00; C21D6/00; (IPC1-7): C21D8/10; B21B3/00
Attorney, Agent or Firm:
Nao Okuyama (3 others)