In the paper, according to the basic principle of ultrasonic and the basic processing method of digital signals, the echo signal of ultrasonic flaw detection is collected by the use of electronic instrument VMUS for ultrasonic flaw detection; the filter is designed to perform ultrasonic flaw detection on heavy plate samples, and the effectiveness of signal processing method is verified.

La_1-xCe_x(NiCoMnAl)_5.05(x = 0, 0.25, 0.50, 0.75) series alloy is prepared by induction melting method; the PCT gaseous hydrogen absorption and desorption test is also carried out. The results show, with the increase of Ce substitution amount, the unit cell volume of alloy decreases gradually, and the axial ratio c/a increases gradually; with the increase of substitution amount, the discharge capacity of alloy decreases gradually, and its high rate discharge performance firstly increases and then decreases, and the discharge performance of alloy at x = 0.25 is the best; the cycle life of alloy is gradually improved with the increase of Ce substitution; with the increase of substitution amount, the maximum hydrogen absorption of alloy decreases gradually, but hydrogen desorption plateau pressure increases gradually.

Based on the field debugging of finishing mill units in 2 250 mm hot continuous rolling of Baotou Steel, the main research contents include two aspects. First, it is introduced the main speed control principle of the basic automation level and various speed control function modes, and main contents in the design of the main speed control function are expounded in detail and systematically; second, the problems of speed control and transmission system during the rolling process are analyzed and solved, and the stability of control system is improved. Finally, the strip steel can be steadily and smoothly passed through the finishing mill units to ensure the strip steel quality of the finishing mill exit.

The characteristics of flame rigidity weak and flame instability are generally existed in regenerative heating furnace. In order to optimize the combustion condition of heating furnace, in the paper, the model of regenerative heating furnace is established by mesh generation of simulation software. The combustion condition in the furnace is analyzed and studied, and the most optimized parameters of regenerative heating furnace are obtained.

There are 2 sets of 20 t/h civil heating pulverized coal boilers in Bayan Obo Iron Mine, and the pollutant emission concentration does not meet the national standards and requirements. In order to protect environment and reduce pollution, fiber bag precipitator is adopted for dust removing reformation. Combined with the actual situation of Iron Mine, the purification of flue gas is realized by technologies such as wet desulphurization and low temperature ozonation wet denitration so as to achieve the goal of dust removal, and the effect is remarkable.

In the paper, it is introduced the treatment status of desulfurization waste liquid from the old and new districts in Coking Plant of Baotou Steel and is explained the feasibility and necessity of going into operation for extracting salt from desulfurization waste liquid in the new district from the actual situation. The key and difficult problems, the economic benefits and the environmental benefits of the process for extracting salt from desulfurization waste liquid are analyzed.

According to the overall planning of Baotou Steel New System construction project, the centralized control and management of the New System gas area are realized, at the same time, three supporting unattended pressurization stations of pellets, Maerz kiln and cold rolling gas purification are constructed for the users such as iron-making plant, steel-making plant and cold rolling plant. Through the scientific management and resource allocation, taking the nearby user principle, distributing rationally, applying and improving the level of automatic information management and monitoring. Further optimize the production process, reduce the labor cost and lay a good foundation for realizing cost-saving, profit-increasing and personnel optimization in Baotou Steel.

In this article, it aims at the over-standard bearing vibration of the TRT generator unit of No. 1 blast furnace in Baotou steel after overhaul, analyzes the vibration of generator unit by collecting the four-channel time domain waveform and using the spectral analysis and relevant fault diagnosis theory, and introduces the field kinetic equilibrium technique in vibration processing of the generator. Finally, it comes to a conclusion that the main cause of the vibration is the effect of alignment and looseness, which leads to the oil film instability of the generator. The cause of oil film whirl and the influence of temperature on the medium and small generator alignment are expounded.

In the paper, it is introduced the development of life cycle assessment (LCA) in steel industry at home and abroad, and the specific research contents and research significance for life cycle assessment of rare earth steel in Baotou Steel are discussed in detail. It is pointed out that the research on the life cycle assessment of rare earth steel in Baotou Steel is the important method to realize green manufacturing, ecological design and making green products; it is beneficial to improve the environmental benefits of rare earth steel products; it is also beneficial to the green development of enterprises and the improvement of regional environment.

The effective way to improve the unit thermal efficiency of Thermal Power Plant is to increase the steam pressure and temperature parameters. Therefore, in the premise of the development of supercritical units, the development of ultra-supercritical units is inevitable. In the paper, it is summarized the development history and technical characteristics of ultra-supercritical technology both at home and abroad, and the brief introduction is given for the future development direction. It is pointed out that the development of ultra-supercritical units should pay attention to economic issues and the development of metal materials; the development situation of new ferritic and austenitic steels for ultra supercritical boilers and the high temperature performance of some new steel grades are emphatically introduced.