Technology of Evaluating Minute TiN Inclusions in High-carbon Steel Wire Rod for Advanced Applications

Takashi SUGITANI; Atsuhiko TAKEDA; Takehiro SHUDO

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Technology of Evaluating Minute TiN Inclusions in High-carbon Steel Wire Rod for Advanced Applications

机译：Technology of Evaluating Minute TiN Inclusions in High-carbon Steel Wire Rod for Advanced Applications

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In high-carbon steel wire rod to be drawn into fine diameters, it is necessary to suppress breakage caused by inclusions during the wire drawing process. In the past, breakage in high carbon steel wires was mainly due to alumina inclusions. However, with the higher reduction in the diameter of wires, breakage started from titanium nitride (hereinafter referred to as TiN), which is more minute than alumina, has become remarkable. To study the means for suppressing TiN and to verify their effects, it is necessary to establish both a technique to analyze the ultra-low concentration of Ti dissolved in steel and a technique to evaluate the number of TiN inclusions. This paper describes a method for quantifying concentration of dissolved Ti using a secondary ion mass spectrometer owned by the Kobe Steel group and a technique for evaluating the number of TiN particles, which has been newly developed by applying a chemical extraction method. This paper also describes how the correlation between the number of TiN particles and the frequency of wire breakage has made it possible to predict the quality of extra fine wires.

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《Kobelco Technology Review》 |2023年第40期|40-46|共7页
作者
Takashi SUGITANI; Atsuhiko TAKEDA; Takehiro SHUDO;
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作者单位

Steelmaking Development Department, Research & Development Laboratory, Steel & Aluminum Business;

Wire Rod & Bar Products Development Department, Research & Development Laboratory, Steel & Aluminum Business (currently Wire Rod & Bar Rolling Department, Kobe Wire Rod & Bar Plant, Kakogawa Works, Steel & Aluminum Business);

Wire Rod & Bar Products Development Department, Research & Development Laboratory, Steel & Aluminum Business;

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正文语种英语
中图分类冶金工业;
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Technology of Evaluating Minute TiN Inclusions in High-carbon Steel Wire Rod for Advanced Applications

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