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1. (WO2018106016) WIRE ROD FOR SPRINGS WITH EXCELLENT CORROSION FATIGUE RESISTANCE, STEEL WIRE, AND MANUFACTURING METHOD THEREOF

Pub. No.:    WO/2018/106016    International Application No.:    PCT/KR2017/014232
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Dec 07 00:59:59 CET 2017
IPC: C22C 38/42
C22C 38/34
C22C 38/44
C22C 38/00
C21D 8/06
C21D 9/52
Applicants: POSCO
주식회사 포스코
Inventors: KIM, Kwan-Ho
김관호
KIM, Han-Hwi
김한휘
JUNG, Hoe-Young
정회영
LEE, Byoung-Gab
이병갑
CHUN, Young-Soo
전영수
Title: WIRE ROD FOR SPRINGS WITH EXCELLENT CORROSION FATIGUE RESISTANCE, STEEL WIRE, AND MANUFACTURING METHOD THEREOF
Abstract:
One aspect of the present invention relates to a wire rod for springs with high strength and excellent corrosion fatigue resistance, in which a combination of Cr, Cu, and Ni content is controlled to an appropriate level, the maximum depth of corrosion pits is set to be below a certain level, and fine carbides containing Mo are set to be at a certain level or greater.