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  • Fu-li Pei, Ze-jin Yu, Xing-gang Zhang, Yong-feng Mi, Dong-mei Jia, Miao Wei
    Rare Earth Steel. 2021, 47(2): 58-61.

    In this paper, the component design requirements of line pipe BNS with acid service of Steel Tube Co. of Baotou Steel are introduced as well as the tensile property, impact property, microstructure and corrosion resistance of material are tested and analyzed. After normalizing treatment, the material is with good mechanical properties and corrosion resistance. The test results showed that designed BNS could completely meet the performance requirements of line pipe under the conditions of acidic service.

  • Xiao-min Zhao, Yong-hua Su, Long Shi, Ya Tao, Gang Lv, Bo Hu
    Rare Earth Steel. 2021, 47(2): 62-65.

    The BG87 high strength steel strand wire rod for railway bridge is independently designed by Baotou Steel as well as its mechanical properties, microstructure and drawing property are studied through such means as controlled cooling process of rolling, determination of static CCT curve, tensile test and metallographic examination. The results showed that the strength and structure property of developed high carbon steel wire rod were good so that it could meet request for utilization of 2 300 MPa grade pre-stressed steel strand. Moreover, the product is applied on experimental bridge of Nachang-Jingdezhen-Huangshan high-speed railway so that a breakthrough of domestic 2 300 MPa high strength steel strand products is achieved.

  • Dan Gao, Bo Hu, Xiao-min Zhao, Wei-tong Huang
    Rare Earth Steel. 2021, 47(2): 66-69.

    The high strength and toughness BGX80 wire rod for submerged arc welding wire of X80 pipeline steel is independently researched, developed and designed by taking the composition, microstructure and performances of X80 pipeline steel of Baotou Steel as research basis combining with welding technology, weld structure and performance characteristics in the process of manufacturing pipe. Moreover, the change rules of its microstructure and mechanical properties are analyzed and studied by such means as CCT curve, tensile test and metallographic inspection. The results showed that the use of controlled rolling and delayed slow cooling technologies for steel wire rod for submerged arc welding wire of X80 pipeline steel in Morgan production line of Baotou Steel ensured the strength and toughness of wire rod.

  • Yuan-feng Ma
    Rare Earth Steel. 2021, 47(2): 70-72.

    In this paper, it is introduced the working principle and characteristics of cone crusher as well as described the causes of flying cone, the particular fault of cone crusher in detail and mechanical analysis. Moreover, the solutions are put forward combining with the actual work on site, which can effectively prevent and control the fault of flying cone for cone crusher.

  • Shi-chen Gao, Zhi-hui Tu, Yu Ning
    Rare Earth Steel. 2021, 47(2): 73-75.

    The read system parameters of uninterruptible power supply (UPS) are recorded and analyzed through serial port and network technologies to achieve the purpose of knowing the running status, degradation trend and preventive maintenance of UPS. Moreover, the battery performances could be mastered according to the change trend of such parameters as battery capacity and internal resistance of battery pack so that the UPS in cluster can be discharged according to the automatic scheduling through remote control.

  • Jian-wen Lu, Pei-rong Lv, Wen-rui Kang
    Rare Earth Steel. 2021, 47(2): 76-78.

    With the continuous development of information technology, it is constantly introduced into the field of file management to improve work efficiency of it. In this paper, the functions and technical route of file management information system of Baotou Steel are studied and designed by adopting digital and information technologies based on analyzing the existing archive management pattern of Baotou Steel by taking the informatization and digitization of file management of Baotou Steel as targets to achieve the digital management of archives of Baotou Steel.

  • Xiu-ying Ni, Yun-peng Fan, Ming Chen, Hai-tao Zhang
    Rare Earth Steel. 2021, 47(2): 79-84.

    The intelligent unmanned crane control for dry coal shed is realized through developing the hardware configuration of control system and software model algorithm with such technologies as edge controller, three-dimensional positioning, anti-swing and anticollision, three dimension scanning as well as reconstruction of point cloud combining with the characteristics of material pile in dry coal shed and environmental factor. In this paper, it is introduced the functions of intelligent unmanned crane system, research and development of intelligent unmanned crane strategy as well as described the research and development process of intelligent unmanned crane.

  • Sheng-zhe Bu, Hua-zhi Li, Bo-qi Peng, Sheng-lan Zhang
    Rare Earth Steel. 2021, 47(2): 85-88.

    The robot is designed based on analyzing the environment in which it is to fulfil a task as well as integrating the applicable mechanical structure and programming system. The robot is based on the Mecanum wheel train chassis and with infrared sensor for positioning, identification and control under the control of STM32 single chip computer. The experimental study results showed that the proposed scheme in paper could satisfy the job activities of robot in narrow area.

  • Yuan Li, Jian Zhang
    Rare Earth Steel. 2021, 47(2): 89-91.

    In this paper, the existing problems and countermeasures in the inspection of special equipment of iron and steel metallurgical enterprises are summarized, which provide the references for enterprises to timely and effectively carry out inspection and management of special equipment.

  • Wei He
    Rare Earth Steel. 2021, 47(2): 92-94.

    In this paper, the current situation of existing management and control for labor cost of Baotou Steel Union Co., Ltd. is analyzed and elaborated, the corresponding suggestions on reforming the existing employment and distribution systems are put forward as well as the systematic measures to reduce labor costs are summarized, which provide practical suggestions and ideas for enterprises to successfully complete the "four decreases and two increases" project and achieve high-quality development.