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| Contrast on non-metallic inclusions control in wire rods for saw wire |
| WANG Kun-peng1，JIANG Min1，ZHAO Hao-qian2，WANG Xin-hua1，WANG Ying2 |
1. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China
2. Technology Center， Xingtai Iron and Steel Co.， Ltd.， Xingtai 054027， Hebei， China |
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Abstract Inclusions in wire rods for saw wire produced in Kobe steel and a steel works of China were investigated by means of automatic analysis technology using Aspex Explorer. Inclusion size， number density， composition and morphology were studied systematically. The results show that the inclusions of wire rods from Kobe steel are in a low amount and the size is less than 5 μm on cross section. There are two type inclusions in Kobe wire rods， namely， the SiO2 rich SiO2-MnO-Al2O3-(R2O，R=Na、K) type and the low melting point CaO-SiO2-Al2O3-MnO-(MgO) type， both of them are elongated during rolling and are nearly harmless. Inclusions of wire rods from China are also classified into two types： SiO2-MnO-Al2O3 and CaO-SiO2-Al2O3-MnO-(MgO). The inclusions in wire rods from China are not only in lager amount but also in worse deformability. The inclusions more than 5μm in size were observed on cross section of wire rods from China. Chemical analysis shows[w([Al]s)]is 0.000 4%-0.000 6% and [w(T[O])]is 0.001 2%-0.001 3% in Kobe wire rod while[w([Al]s)]is 0.000 4%-0.000 6% and[w(T[O])]is 0.001 2%-0.001 3% in domestic ones.
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Received: 09 March 2015
Published: 06 January 2016
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2016, Vol. 51 
