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Wire rod having decreased center segregation, steel wire and method for manufacturing the same

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 characteristics

Active Publication Date: 2017-07-21
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 having decreased center segregation, steel wire and method for manufacturing the same
  • Wire rod having decreased center segregation, steel wire and method for manufacturing the same
  • Wire rod having decreased center segregation, steel wire and method for manufacturing the same

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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 forms, and the scope of protection of the present invention is not limited to the embodiments described below. Furthermore, the embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art to which the present invention pertains.

[0033] The inventors of the present invention have recognized that when the center segregation degree of the wire rod becomes high, there is a problem that the torsional characteristics of the steel wire manufactured by heat treatment and drawing processing are poor, and in particular, for a high-strength wire rod with a high content of alloy elements, in the In the existing continuous casting (Continuous casting) process, methods such as reducing the casting speed or using soft reduction (Soft reduction) cannot effectively elimi...

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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 and a manufacturing method thereof with reduced center segregation. Background technique [0002] High-strength wire rods with a wire diameter of 10 to 20 mm are manufactured into high-strength steel wires with a wire diameter of less than 10 mm through heat treatment and processing. Steel wires are used in various forms in the entire industry to support loads. Typical forms include cables for suspension bridges and cable-stayed bridges, PC steel wires for concrete reinforcement in concrete piers, cables for large buildings and structures, and anchor cables for supporting offshore oil fields and various structures. (Anchor rope) and so on. Generally, steel wires are used in cables in a twisted form, so the torsional properties of the wires 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 it...

Claims

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Application Information

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Patent Type & Authority Applications(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