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Title:
HIGH STRENGTH STEEL WIRE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH0790495
Kind Code:
A
Abstract:

PURPOSE: To produce a wire with which high strength is easily attained and having practical strength, in a steel wire with a pearlitic structure having a specified compsn. constituted of C, Si, Mn, Cr, V, Nb and iron.

CONSTITUTION: In a steel wire with a pearlitic structure having a compsn. contg., by weight, 0.7 to 1.0% C, ≤1.0% Si, ≤0.7% Mn, ≤0.5% Cr and/or 0.02 to 1.0% V and/or Nb, and the balance iron with inevitable impurities, the carbide of V or Nb with ≤0.1μm size is precipitated into ferrite by 0.05 to 1.0vol.% to obtain a high strength steel wire with which high strength can be attained even at a low draft. This steel wire is produced by holding the wire having the same componental compsn. at 950 to 1200°C, thereafter executing rapid cooling to 650 to 500°C, holding it for 5sec to 5min, next executing cooling to a room temp., subsequently subjecting it to wire drawing at 60 to 98% reduction rate of area and moreover executing heating treatment at 300 to 500°C.


Inventors:
KAWABE NOZOMI
MURAI TERUYUKI
Application Number:
JP25914793A
Publication Date:
April 04, 1995
Filing Date:
September 22, 1993
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
C21D8/06; C21D9/52; C22C38/00; C22C38/26; (IPC1-7): C22C38/00; C21D8/06; C21D9/52; C22C38/26
Attorney, Agent or Firm:
Hidemi Aoki (1 outside)



 
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