Title:
HIGH-STRENGTH WIRE ROD EXCELLING IN WIRE DRAWING PERFORMANCE AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/001057
Kind Code:
A1
Abstract:
A high-strength wire rod having a pro-eutectoid ferrite area ratio of 3% or below and a pearlite structure area ratio of 90% or higher, produced by subjecting a hard steel wire rod of specified components to hot rolling and thereafter either direct molten salt patenting or re-austenitizing and subsequent molten salt or lead patenting.
Inventors:
YAMASAKI SHINGO (JP)
ISO ARATA (JP)
NISHIDA SEIKI (JP)
ISO ARATA (JP)
NISHIDA SEIKI (JP)
Application Number:
PCT/JP2006/313026
Publication Date:
January 04, 2007
Filing Date:
June 29, 2006
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
YAMASAKI SHINGO (JP)
ISO ARATA (JP)
NISHIDA SEIKI (JP)
YAMASAKI SHINGO (JP)
ISO ARATA (JP)
NISHIDA SEIKI (JP)
International Classes:
C22C38/00; C21D8/06; C22C38/06; C22C38/54
Foreign References:
| JPH11315349A | 1999-11-16 | |||
| JP2004137597A | 2004-05-13 | |||
| JP2005126765A | 2005-05-19 | |||
| JP2005190259A | 2005-07-14 | |||
| JP2609387B2 | 1997-05-14 | |||
| JP2001131697A | 2001-05-15 |
Other References:
See also references of EP 1897964A4
Attorney, Agent or Firm:
SHIGA, Masatake et al. (Yaesu Chuo-k, Tokyo 53, JP)
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