WIRE ROD AND PART, HAVING IMPROVED DELAYED FRACTURE RESISTANCE, FOR USE IN BOLT AND METHOD FOR MANUFACTURING SAME

Title:

WIRE ROD AND PART, HAVING IMPROVED DELAYED FRACTURE RESISTANCE, FOR USE IN BOLT AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2022/131749

Kind Code:

A1

Abstract:

Disclosed are high-strength wire rods and parts, having improved delayed fracture resistance, for use in bolts and a method for manufacturing same. The high-strength wire rod, having improved delayed fracture resistance, for use in bolts according to the present invention comprises, by weight%, 0.15 to 0.30% of C, 0.05 to 0.35% of Si, 0.95 to 1.35% of Mn, 0.030% or less of P, 0.030% or less of S, 0.005 to 0.030% of Ti, 0.0010 to 0.0040% of B, and the balance of Fe and inevitable impurities.

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Inventors:

CHUN YOUNGSOO (KR)
CHOI SEOK-HWAN (KR)
KIM KYOUNGSIK (KR)
CHOI MYUNGSOO (KR)

Application Number:

PCT/KR2021/018972

Publication Date:

June 23, 2022

Filing Date:

December 14, 2021

Export Citation:

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Assignee:

POSCO (KR)

International Classes:

C22C38/02; C21D8/06; C21D9/52; C22C38/04; C22C38/14

Foreign References:

JP2005133152A	2005-05-26
KR101746971B1	2017-06-14
JP2010159476A	2010-07-22
JPH0713257B2	1995-02-15
KR20150057294A	2015-05-28

Attorney, Agent or Firm:

SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)

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