In this paper, the microstructure and properties of 700 MPa grade beam steel with such two composition designs as low C+Mn+Ti and low C+Mn+Ti+Nb are compared and analyzed. The results showed that the plasticity of single Ti microalloyed product and that of Nb-Ti multi-microalloyed product were the same with the same strength, but the low temperature impact toughness of single Ti microalloyed product was poorer so that its brittle transition was at -20 ℃, while the brittle transition of Nb-Ti multi-microalloyed product was at -50 ℃. It could be improved through increasing the rolling reduction of the first pass of rough rolling and thickness of intermediate billet so as to reach the control level of Nb-Ti multi-microalloyed products.

In the paper, it is mainly introduced how the heating zone, soaking zone, slow cooling section, fast cooling section, over aging section and exit section combine such equipment as gas-fired radiant tube, electric radiant tube, draught fan, thermocouple and infrared thermometer to conduct the temperature control of radiant tube and strip steel so that the heating or cooling temperature of strip steel in annealing furnace desired by process could be reached through this two temperature control modes.

The galvanized dual phase steel is the high strength steel widely applied in the field of automobile sheet. In order to meet the requirements of lightweight raw material for automobile manufacturer, the galvanized dual phase steel HC300/500DPD+Z is successfully developed through adopting the microalloying composition system of C-Si-Mn-Cr as well as such reasonable process design as hot rolling, pickling, annealing, hot galvanizing and finishing based on the characteristics of 2 030 mm hot galvanizing production line. The production process and using effects of users showed that its mechanical properties were qualified, production process was mature and it was with good formability to meet users’ requirements when applied for automotive structural parts.

In the paper, it is introduced the more elaborate distinction and logic control of different materials, categories, widths, thicknesses, coiling diameters and surface treatment methods with automatic control system through the accurate calculation of model aiming at the “heart-shaped” collapse of coil with thinner strip steel as well as the causes of collapse core for steel coil are analyzed through the change of interlaminar stress for steel coil. Moreover, the cone gradient of coiling tension is realized step by step with the change of coiling diameter as well as the realization and application of tension control scheme of hard core for preventing collapse core are discussed comprehensively.

In this paper, the control strategy of U shaped cooling is researched and developed through controlling coiling temperatures at head and tail of hot rolling aiming at the problems that the fluctuation and differences of mechanical properties along the length direction of steel belt are too great caused by uneven heat dissipation of hot rolling process after coiling for deep drawing series products. As a result, the flexible setup of steel belt with different steel grades and thicknesses could be realized so that the mechanical properties along the length direction of cold rolled products are even and the drawability of products is guaranteed.

In this paper, such aspects as the design background, design process and practical applications of new-type slab turnover machine are introduced. The new-type slab turnover machine in production line of wide and thick plate is designed based on analyzing the defects of traditional slab turnover machine as well as the process requirements and working condition of newly designed slab turnover machine needed to satisfy. It is with such characteristics as high load capacity, stable and reliable performances as well as large range of cover length of turnover slab so that it is suitable for various load lifting devices of slab and with low construction cost.

The goal of accurately controlling various components in smelting process of high magnetic induction oriented silicon steel is realized through process optimization of the whole production line in steelmaking area of Rare Earth Steel Plate Co., where the mass fraction of total oxygen in casting blank is controlled at 0.000 4%~0.001 5%; mass fraction of aluminum is controlled at 0.027 0%~0.030 0%; mass fraction of nitrogen is controlled at 0.007 1%~0.008 3% so that the high magnetic induction oriented silicon steel could meet the needs of next step in the rolling process. As a result, its mass production is realized.

In this paper, it is systematacially introduced the background, specific implementation process and achievement for the integrated management mode of production, marketing, research and development and forwarding in Rare Earth Steel Plate Co. as well as comprehensively summarized the important measures in operation process. The exploration and practices on the management mode promote the performance of production and management and management level of enterprise to be improved as well as provide the references for propelling the reform of management mechanism and improving the management efficiency of other enterprises in the iron and steel industry.

In the paper, it is elaborated such faults and problems of axial plunger pump with the existing working condition of hydraulic system in Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd. as overheating of pump body, sealing failure, system pollution, noises and insufficient flow caused by damage of parts, oil pollution, leakage, friction losses and assembly accuracy. Moreover, their inducements and characteristics are analyzed aiming at the generation of faults as well as damage and operation condition of inner components, quality and cleanliness of oil, system leakage and temperature are checked so as to make effective fault diagnosis for hydraulic system as well as ensure the stable operations of axial plunger pump and hydraulic system.

In the paper, it is introduced the supermatic and informationized solution of intelligent unmanned warehouse with collaborative operation of various unmanned equipment such as crane and ground equipment, intelligent scheduling, intelligent storage location recommendation and trace of the entire process of materials is established aiming at how to effectively improve warehouse management and reduce warehouse cost by exploring the establishment of intelligent unmanned warehouse, analyzing such links of the whole process of warehouse as inbound of coils, swing, classified storage and delivery of cargo from storage as well as taking the new technology of unmanned and automatic equipment as supporting point, informationized and intelligent decision making of warehouse management system as support.