Zhang X.-G.,Anshan Iron and Steel Group Corporation
Kang T'ieh/Iron and Steel (Peking) | Year: 2011
The latest developments in processes for producing high strength low alloy (HSLA) steels were introduced from clean steel production process, endless rolling process of thin slab continuous casting and rolling, strip cast rolling process and TMCP process based on fast cooling technology. The progress on many kinds of HSLA steel products was systematically described, such as automobile steels, steels for shipbuilding and offshore engineering, pipeline steels, steels for building structure, steels for nuclear power applications, steels for pressure vessels, steels for engineering machinery and steels for containers. Finally, the development trend of HSLA steels was predicted to be higher strength, higher performance and lower manufacturing cost in the future, which would be guidance for the development of HSLA steels in some way.
Bai J.,Shenyang Aerospace University |
Wang J.,Anshan Iron and Steel Group Corporation
Advanced Materials Research | Year: 2011
in this paper, roll wear calculation model is developed considered the length of rolled strip, load distribution between rolls, roll surface roughness and other factors, and the corresponding calculation procedure has been developed. The experimental results show that the calculation value of the program is close to the actual data, and its accuracy can meet the requirement of on-line shape control. Based on the procedure, wear of each roll is calculated to study the effects of asymmetric bending. It is shown that asymmetric bending can decrease the local severe wear of rolls, and improve the uniform degree of roll wear distribution, thus the effects of asymmetric bending force on intermediate roll is better than that on work roll. Therefore asymmetric bending of intermediate roll can be used to reduce the wear of rolls in production. © (2011) Trans Tech Publications.
Shao A.,Anshan Iron and Steel Group Corporation
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | Year: 2013
For the mixed minerals which were prepared by pure martite, siderite and quartz, the iron grade, yield and recovery decrease rapidly with the increase of siderite content in iron ore, which indicates that the reverse flotation couldn't concentrate the carbonates-containing hematite ore. Stepped flotation was proposed which separates siderite first and then takes martite apart from quartz. Therefore, the mass fraction of the iron grade increases from 42.34% to 59.09% and iron recovery increases from 53.18% to 79.84% compared with routine reverse flotation. And for Donganshan carbonates-containing hematite ore, the mass fraction of iron grade of 66.34% and recovery of 71.6% are obtained in close-circle experiment of stepped flotation.
Zhang Y.-F.,Anshan Iron and Steel Group Corporation
Yejin Fenxi/Metallurgical Analysis | Year: 2016
The discharge behavior of light source in spark source atomic emission spectrometry was very complicated and it was difficult to observe directly. In order to study the emission behavior of atoms in single spark discharge, the time-resolved function and single spark treatment technique of spark source atomic emission spectrometer were utilized to design the experiments. The chronological sequence curves of light intensity in single spark discharge were obtained for atoms of seven elements in certified reference materials of stainless steel, including iron, aluminum, silicon, manganese, phosphorus, sulfur and carbon. The characteristics of chronological curves between single spark intensity and time were analyzed for each testing element. It was found that the emission behavior of atom in single spark excitation was behind the discharge behavior. The duration of chronological curve of single spark under same excitation condition and the time of maximum intensity of atoms were different for various elements. It provided a new route to decrease the detection limit, improve the sensitivity of spark source atomic emission spectrometer and avoid the spectral interference among elements. Moreover, it also provided a new way to further study the behavior of microscopic particles in spark discharge process. © 2016, Central Iron and Steel Research Institute. All right reserved.
Shao A.L.,Anshan Iron and Steel Group Corporation
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016
A new soil amendment was prepared in this study, which was comprised of iron tailings (65%), active slag (20%), acid fertilizer (12%) and other additives (3%). Through comprehensive utilization, the iron tailings can be reused. The pH, salinity, density, porosity and permeability velocity of the soil from the test fields were detected. The results showed that the pH value of the soil decreased from 9.30 to 6.95, and the salinity decreased from 0.42% to 0.25% in one year. The density of the soil was lower by 7.80% than before improvement, while porosity and permeability velocity were higher by 9.35% and 72.73%, respectively. The new soil amendment could effectively resolve the problems of soil secondary salinization and re-alkali. The improvement of the saline-sodic soil by using this soil amendment has not only ecological, environmental and social benefits, but also economic benefits. © 2016 Taylor & Francis Group, London.