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Wire rod, steel wire with reduced central segregation, and manufacturing method thereof

A manufacturing method and segregation technology, applied in steel wire and its manufacture, in the field of wire with reduced central segregation, to achieve the effect of reduced central segregation and high-strength torsional properties

Active Publication Date: 2018-08-17
浦项股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, for high-strength wire rods with a high content of alloying elements, there are limitations to using the method described to suppress segregation

Method used

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  • Wire rod, steel wire with reduced central segregation, and manufacturing method thereof
  • Wire rod, steel wire with reduced central segregation, and manufacturing method thereof
  • Wire rod, steel wire with reduced central segregation, and manufacturing method thereof

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Embodiment Construction

[0032] Next, preferred embodiments of the present invention will be described. However, the embodiments of the present invention can be modified into various ways, and the protection scope of the present invention is not limited to the embodiments described below. In addition, the embodiments of the present invention are provided in order to more completely describe the present invention to those of ordinary skill in the art to which the present invention belongs.

[0033] The inventors of the present invention have recognized that when the degree of center segregation of the wire rod becomes high, there is a problem of poor torsional characteristics of the steel wire manufactured by heat treatment and drawing processing. In particular, for high-strength wire rods with a high content of alloying elements, Existing continuous casting (Continuous casting) steps adopt methods such as reducing the casting speed or using soft reduction, etc., which cannot effectively eliminate segrega...

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PUM

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Abstract

One aspect of the present invention relates to a wire rod having decreased central segregation, comprising, by weight percentage: C: 0.9 to 1.1%, Si: 0.7 to 1.5%, Cr: 0.6 to 1 .2%, Mn: 0.4-0.8%, balance Fe and unavoidable impurities. The difference in hardness (TS) between the tensile strength (TS) and the central segregation portion and the peripheral portion satisfies the following relationship 1: [delta] HV * TS <= 105000, where the unit of TS is MPa, The unit of [delta] HV is Hv.

Description

Technical field [0001] The invention relates to a wire rod, a steel wire with reduced center segregation and a manufacturing method thereof. Background technique [0002] High-strength wires with a wire diameter of 10-20mm are heat-treated and processed into high-strength steel wires with a wire diameter of 10mm or less. The steel wires are used to support loads in various forms throughout the industry. The representative forms are cables for suspension bridges and cable-stayed bridges, PC steel wires for concrete reinforcement in concrete piers, cables for large buildings or structures, and anchor cables for supporting offshore oil fields or various structures. (Anchor rope) and so on. Under normal circumstances, the steel wire is used in the cable by twisting, so the torsion characteristics of the steel wire are very important. [0003] When processing high-strength wire into steel wire, in order to reduce the wire diameter to the size of the final product and ensure its streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C21D8/06
CPCC21D8/06C22C38/02C22C38/04C22C38/18
Inventor 朴焌学杨裕燮金再焕金汉辉
Owner 浦项股份有限公司