Title:
冷間加工性に優れた非調質線材及びその製造方法
Document Type and Number:
Japanese Patent JP6605141
Kind Code:
B2
Abstract:
Disclosed are a non-quenched and tempered wire rod and a manufacturing method therefor, the non-quenched and tempered wire rod comprising in percentage by weight: 0.15 to 0.30% of C; 0.05 to 0.3% of Si; 1.0 to 2.0% of Mn; 0.5% of less of Cr (except for 0%); 0.02% or less of P; 0.02% or less of S; 0.01 to 0.05% of sol.Al; 0.005 to 0.02% of Nb; 0.05 to 0.2% of V; 0.01% or less of N; Fe as the remainder; and unavoidable impurities, wherein the non-quenched and tempered wire rod satisfies the following formulas 1 and 2, wherein, when the hardness of the wire rod measured in 1/2d position and in 1/4d position in the diameter direction of the wire rod is Hv,1/2d(Hv) and Hv,1/4d(Hv), respectively (here, d is the diameter of the wire). [Formula 1] (Hv,1/2d+Hv,1/4d)/2 ≤ 240 [Formula 2] Hv,1/2d/Hv,1/4d ≤ 1.2
Inventors:
Moon, Don Jun
Li, San Yun
Foo, Young Guan
Kim honey
Li, San Yun
Foo, Young Guan
Kim honey
Application Number:
JP2018523799A
Publication Date:
November 13, 2019
Filing Date:
November 11, 2016
Export Citation:
Assignee:
POSCO
International Classes:
C22C38/00; C21D8/06; C22C38/38
Domestic Patent References:
| JP2008127596A | ||||
| JP4032514A | ||||
| JP3204328A |
Attorney, Agent or Firm:
Kyosei International Patent Office