Latest ArticlesAfter the exploration and summary of the production process of 200, 000 tons silicon steel in Sheet Plant of Baotou Steel, factors such as the quality of steel plate cleaning, the annealing temperature of annealing furnace and the thickness of coating film are the key factors affecting the performance of silicon steel finished products. The cleaning quality of the cleaning section before optimization is an effective method to reduce the probability of furnace accretion for furnace roller. The annealing temperature of the annealing furnace at 750~950℃ is the core technology to refine the grain of steel plate, adjust the microstructure and eliminate the defects of microstructure. Uniform coating film, reasonable thickness and guaranteed in 3.2~3.5g/m2 are important measures to ensure the corrosion of silicon steel sheet from various corrosive mediums.
BY500 high strength wear-resisting plate is widely used in mining, power and other industries, and the main problem at present is the thin gauge plate after quenching with poor plate shape. Through reasonable composition design and reasonable control of quenching water quantity, roller speed, quenching water pressure and other parameters, the steel plate performance and plate shape can meet customer requirements.
Water damage of asphalt pavement is a common problem in highway engineering. In the paper, the mechanism of water damage formation and the causes of water damage of asphalt pavement are analyzed, and six concrete measures to prevent water damage of asphalt pavement are put forward in order to reduce the occurrence of asphalt pavement water damage and prolong the service life of pavement.
In the paper, it is studied the microstructure and texture evolution of CSP non-oriented electrical steel 50W600 in hot rolling, cold rolling and annealing process. The results show that: The casting blank is columnar grain structure; the texture of hot rolled plate along the thickness is uneven, and the main texture of surface is brass texture; the decarburizing plate is recrystallization texture and the average grain size is 50 μm, which mainly is γ fiber texture.
In the paper, the working principle and steps of strip steel strapping machine are introduced. Aiming at problems in the process of bundling, such as banding strap loosing, distributor scroll difficult, drive shaft easy to break and reducer tooth break; using mechanical principle and combining with the actual situation on site, the design and analysis of the related problems are carried out, and the corresponding modification scheme is put forward, while the feasibility of the scheme is proved and the modification is carried out. By comparing the use effect and cost accounting before and after the modification, equipment failure is reduced.
Based on the analysis of structure and working principle of drum type flying shear, in the paper it is introduced the application and structural features of drum type flying shear in galvanizing line of Baotou Steel. It is expounded and summarized the different shear edge forms of cold rolling drum type flying shear, and combined with on-site practical experience, technical points in mechanics for flying shear maintenance are emphatically introduced. The experience has been well applied in galvanizing line of Baotou Steel, and maintenance time of flying shear is shortened; normal and steady operation of drum type flying shear is ensured; service life of flying shear of the roller is improved, having a great economic benefit and the method is practicable. It has played a certain reference for the maintenance work of such kind of flying shear.
The automatic calibration technology of rolling mill in CSP production line is the technical focus and difficulty of CSP steel rolling, and the calibration failure is the key factor that restricts the stable operation of production line in practical production. Based on experience accumulated in the operation of Baotou Steel CSP production line for many years, the process and principle of automatic calibration are analyzed in detail, which provides a technical reference for studying calibration technology and processing calibrating faults in production line.
In the project of dust removal by ventilation, air dilution cooling is widely used as a common cooling method. Through analysis of the case, it is roughly discussed the application and energy saving optimization function of air dilution cooling technology in dedusting for metallurgy, namely, the baghouse system.
Some of the sludge and debris will flow with the water from water pump inlet into system when suction well of industrial circulating water system is in normal operation, resulting in pipeline filter clogging and production line nozzle clogging. In the paper, it is analyzed reasons for the entry of sludge into suction well and introduced the method of adding fender weir, and the concrete method and application example of installing fender weir in suction well. Practice has proved that the fender weir can effectively prevent sludge from inhalation into water supply system.
In order to reduce energy consumption, easy to maintain equipment, in view of problems of large energy consumption in DC4 pump set of CSP laminar flow turbid circulating water system in Sheet Plant of Baotou Steel, a new type of submersible pump is selected according to working conditions of field equipment. The reasonable transformation plan is developed to achieve the purpose of saving energy consumption, and also provides a reference method for other similar enterprises energy saving transformation.
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