Wire rod excellent in wire-drawing workability and method for producing same

A manufacturing method and technology for wire rods, which are applied in manufacturing tools, temperature control, heat treatment process control, etc., can solve problems such as ductility deterioration of wire drawing products and reduction of mold life.
CN101086052AInactive Publication Date: 2007-12-12KOBE STEEL LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KOBE STEEL LTD
Publication Date
2007-12-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed are a wire rod and a method therefor. The wire rod is excellent in wire-drawing workability, insusceptible to wire break in spite of an increase in wire-drawing rate, and reduction of area, and capable of extending a die life by suppressing die wear. The wire rod is made of steel containing C: 0.6 to 1.1%, Si: 0.1 to 2.0%, Mn: 0.1 to 1%, P: not more than 0.20%, S: not more than 0.20%, N: not more than 0.006%, Al: not more than 0.03%, and O: not more than 0.003%, the balance including Fe, and unavoidable impurities. Further, the wire rod comprises a pearlite structure wherein an area ratio of a second-phase ferrite is not more than 11.0%, and a pearlite lamellar spacing is not less than 120 mum.
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Description

technical field

[0001] The present invention relates to a wire rod excellent in wire-drawability capable of efficiently producing wire-drawn products such as steel cords, tire wires, PC steel wires, and spring steels with high productivity, and a manufacturing method thereof. Background technique

[0002] In most cases of manufacturing wire-drawn products such as steel cords, the wire rod as the raw material is subjected to wire-drawing for dimensional adjustment and material (physical property) adjustment, so improving the wire-drawability of the wire rod is extremely important in improving productivity, etc. beneficial. That is, if the wire drawing workability is improved, not only the productivity can be improved due to the increase of the wire drawing speed and the reduction of the number of wire drawing passes, but also many benefits such as reduction of die wear can be enjoyed.

[0003] Therefore, in this technical field, researches to improve the wire-drawability of ...

Claims

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