Wire with excellent suitability for drawing and process for producing the same
US9267183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2006 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Apr 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B3/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.