【作者】 姜敏； 王新华； 王郢； 王昆鹏； 赵昊乾；

【Author】 Jiang Min;Wang Xinhua;Wang Ying;Wang Kunpeng;Zhao Haoqian;School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing;Xingtai Iron & Steel Company;

【机构】 北京科技大学冶金与生态工程学院； 邢台钢铁有限责任公司；

【摘要】 本研究针对切割丝生产中夹杂物控制这一核心技术,原创性提出应将夹杂物控制为MnO-Al₂O₃-SiO₂/SiO₂复相体系,并深入地揭示了夹杂物的控制机理。通过控制MnO-Al₂O₃-SiO₂夹杂物中析出SiO₂而形成MnO-Al₂O₃-SiO₂/SiO₂复相结构,利用不变形的SiO₂在多道次热轧与冷拉拔过程中分割塑性变形的MnO-Al₂O₃-SiO₂母体相,实现夹杂物最终尺寸的极细小化。基于这一夹杂物控制目标,本研究首次在国内开发成功高品质切割丝（0.11⁰.12mm直径规格）,连续拉拔超过29000km以上不断丝。更多还原

【Abstract】 A innovative technical concept was proposed on the control of inclusions in saw wires in this paper, which targets the formation of multi-phased MnO-Al₂O₃-SiO₂/SiO₂ inclusions. Related mechanisms on control of inclusions can be described as following: multi-phased MnO-Al₂O₃-SiO₂/SiO₂ inclusions were featured by un-deformable SiO₂ precipitating on the plastic MnO-SiO₂-Al₂O₃ inclusion matrix;（2） Because of distinctive deformability, the un-deformable SiO₂ would help to "cut" the ever-deforming MnO-SiO₂-Al₂O₃ matrix into tiny strips with the proceeding of multi-pass hot rolling and cold drawing;（3） in the end, extremely minized sizes of inclusions would be obtained. Based on this method, domestic production of saw wire（with diameter about 0.11⁰.12 mm） in China was successully realized for the first time, which can be continuously cold drawn to a length of more than 29000 km without breakages.更多还原