Title:
METHOD FOR MANUFACTURING ZINC-COPPER PLATED STEEL WIRE FOR SPRING
Document Type and Number:
WIPO Patent Application WO/2016/143944
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a zinc-copper plated steel wire for a spring, wherein the steel wire has excellent drawability and formability. A method for manufacturing a steel wire for a spring according to the present invention comprises: a first dry drawing step for drawing a wire rod material to a wire diameter of 2.0-4.0 mm; a second dry drawing step for heat treating and then dry drawing the first dry drawn steel wire to a wire diameter of 1.5-3.5 mm; a zinc-copper plating layer forming step for sequentially forming zinc and copper plating layers on the surface of the steel wire such that the total thickness of the zinc and copper plating layers is 2.0-4.0 μm; and a third dry drawing step so that the final wire diameter is 0.5-3.0 mm and the zinc-copper plating layer thickness is 0.2-2.0 μm.
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Inventors:
KIM JONG SUNG (KR)
Application Number:
PCT/KR2015/004950
Publication Date:
September 15, 2016
Filing Date:
May 18, 2015
Export Citation:
Assignee:
HONGDUK IND CO LTD (KR)
International Classes:
B21C1/00; C23C2/04; C23C2/28; C23C2/38
Foreign References:
| KR101413973B1 | 2014-07-01 | |||
| KR20000061902A | 2000-10-25 | |||
| JP2013227629A | 2013-11-07 | |||
| JP2009248102A | 2009-10-29 | |||
| KR20010055677A | 2001-07-04 |
Attorney, Agent or Firm:
KIM, YOUNG HWAN (KR)
김영환 (KR)
김영환 (KR)
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