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Analysis and Control of the Surface Sliver Defect of Threated Steel
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Fei YAO1, Bing ZHENG2, 3, 4, Jianming KONG1, Dong XU3, 4
Angang Technology | 2026, (3) : 62 - 67
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Angang Technology | 2026, (3): 62-67
• Production Practice •
Analysis and Control of the Surface Sliver Defect of Threated Steel
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Fei YAO1, Bing ZHENG2, 3, 4, Jianming KONG1, Dong XU3, 4
Affiliations
  • 1.Whole Processes of High Quality Fastener Application Technology Research Center of Universities in Hebei Province, Hebei Taihang Iron and Steel Group Co., Ltd., Handan 056305, Hebei, China
  • 2.Meson Technology (Hebei) Co., Ltd., Handan 056000, Hebei, China
  • 3.Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hebei University of Engineering, Handan 056038, Hebei, China
  • 4.Technology Innovation Center for Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province, Hebei Puyang Iron and Steel Co., Ltd., Handan 056305, Hebei, China
doi: 10.3969/j.issn.1006-4613.2026.03.011
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To solve the surface sliver defect of threated steel, the macro morphology and micro composition of threated steel were detected by SEM scanning electron microscope and energy spectrum analyzer. The results showed that there were unilateral sliver defects of different sizes at the longitudinal and transverse ribs of the threated steel. The irregular inclusions of Al2O3, SiO2 and Al2O3-SiO2 were detected at the cross section of the sliver defects, with sizes ranging from 40~120 μm. These non-metallic inclusions caused a deterioration in the local plasticity of the threaded steel ingot, leading to the formation of cracks. As the rolling process progressed, these cracks gradually expanded and ultimately resulted in sliver defects. By implementing measures such as reducing the oxygen content at the converter endpoint and enhancing the air-tightness during pouring, the average oxygen content of the molten steel in the tundish was reduced to 25ppm. Consequently, the incidence rate of surface sliver defects in hot - rolled products decreased from 2.7% to 1.5%, effectively preventing the occurrence of sliver defects.

threated steel  /  surface quality  /  non-metallic inclusions  /  sliver defect  /  control measures
姚菲, 郑冰, 孔建铭, 徐东. 螺纹钢表面翘皮缺陷分析及控制. 鞍钢技术, 2026 , (3) : 62 -67 . DOI: 10.3969/j.issn.1006-4613.2026.03.011
Fei YAO, Bing ZHENG, Jianming KONG, Dong XU. Analysis and Control of the Surface Sliver Defect of Threated Steel[J]. Angang Technology, 2026 , (3) : 62 -67 . DOI: 10.3969/j.issn.1006-4613.2026.03.011
Appendix
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Year 2026 volume Issue 3
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doi: 10.3969/j.issn.1006-4613.2026.03.011
  • Online Date：2026-09-20
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  • Revised：2025-09-29
Funding
Affiliations
    1.Whole Processes of High Quality Fastener Application Technology Research Center of Universities in Hebei Province, Hebei Taihang Iron and Steel Group Co., Ltd., Handan 056305, Hebei, China
    2.Meson Technology (Hebei) Co., Ltd., Handan 056000, Hebei, China
    3.Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hebei University of Engineering, Handan 056038, Hebei, China
    4.Technology Innovation Center for Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province, Hebei Puyang Iron and Steel Co., Ltd., Handan 056305, Hebei, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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