Title:
NEEDLE WIRE
Document Type and Number:
WIPO Patent Application WO/2018/135111
Kind Code:
A1
Abstract:
Needle wire (2) is formed from steel that comprises 0.95 mass% to 1.03 mass% of C, 0.15 mass% to 0.35 mass% of Si, 0.60 mass% to 0.80 mass% of Mn, 0.35 mass% to 0.45 mass% or Cr, 0.01 mass% to 0.05 mass% of Mo, 0.10 mass% or less of Ni, and 0.026 mass% or less of P, the balance being Fe and unavoidable impurities. Said wire (2) contains multiple carbide particles in the metal structure thereof. The average particle diameter of said carbides is 0.10 µm to 1.0 µm. The area ratio of said carbides is 10% to 30%. The S content in the steel is 0.003% or less. The Vickers hardness of the wire (2) is 200 to 300.
Inventors:
YAMAKAWA TOMOHIRO
Application Number:
PCT/JP2017/040755
Publication Date:
July 26, 2018
Filing Date:
November 13, 2017
Export Citation:
Assignee:
TOKUSEN KOGYO KK (JP)
International Classes:
C22C38/00; B21G1/06; C21D8/06; C22C38/44; D04B35/02
Domestic Patent References:
| WO2017029922A1 | 2017-02-23 |
Foreign References:
| JP2015190036A | 2015-11-02 | |||
| JP2006063384A | 2006-03-09 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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