Abstract: Calciothermic reduction of titanium oxide is a new process to prepare titanium powder with short route and low cost.In this paper,effect of the amount of additive(CaCl2) and reduction time on reduced products is studied at 1000℃ in vacuum atmosphere.The results show all the titanium oxide is convert...
Abstract: The reaction mechanism of high temperature carbonization of titanium-rich BF slag and principles of non-Newtonian fluids mechanics were employed to analyze the cause of furnace bottom rising.The results demonstrate that the primary cause is the deposition of TiC particles in carbonization process of...
Abstract: Through studying on the relationship between operating parameters and utilization coefficient of a new roasting shaft furnace using vanadium-bearing titaniferous magnetite as its major raw material,three levels that affect thermal operating parameters of the shaft furnace are proposed,and the interr...
Abstract: Major factors influencing V2O3 production with rotary kiln were examined.It was found that the impurity content of the products could be regulated by controlling reduction temperature,discharge rate,flow rate of reducing gas,and rotating speed of cylinder.Thus,the product quality was greatly improve...
Abstract: Vanadium pentoxide flake and graphite were used as raw materials to prepare vanadium nitride(VN) with high temperature non-vacuum method in the laboratory.The result shows that ball milling time of vanadium pentoxide flake has influence on the content of nitrogen and carbon in VN.Vanadium pentoxide ...
Abstract: With the help of the software ANSYS,a finite element model was proposed to simulate the vacuum arc remelting process of a Ø600 mm Ti6Al4V alloy ingot,and the temperature field variation and effect of melting current on the morphology of molten pool in the process was studied.And then the results wer...
Abstract: The microstructure and properties of TA15 alloy bar were investigated.The results show that there are noticeable differences in the microstructure and properties of TA15 alloy bar produced by different forging processes.In order to obtain desirable microstructure and properties,it is essential that ...
Abstract: Mesoporous TiO2 was prepared by a sol-gel method with the assistance of cetyl trimethyl ammonium bromide(CTAB).Then the activity of the photocatalyst so produced for photocatalytic decolorization of methyl orange(MO)solution was evaluated,and the photocatalyst was characterized with BET specific sur...
Abstract: Production of vanadium-rich pig iron by smelting and reduction of metallized pellets is one of the ways to utilize vanadium-bearing titaniferous magnetite.There is a positive correlation between vanadium and iron recovery rates.In order to improve iron recovery,orthogonal experiments were conducted ...
Abstract: As processes of pure oxygen blast and top gas recycling are applied in the top gas recycling oxygen blast furnace,gas compositions in the furnace are dominated by H2 and CO,which are quite different from those in traditional blast furnace.In order to study the influence of H2 and CO on reduction beh...
Abstract: Main problems associated with square/round billet continuous casting include poor castability of molten steel,longitudinal surface cracks of round billet as well as internal strand defects which are difficult to eliminate during rolling due to low compression ratio.To increase castability of molten ...
Abstract: Causes of deep oscillation marks on the 304 stainless steel slab were analyzed based on solidification characteristics of the steel.Combined with characteristics of steel structure,the optimum parameters for mold oscillation process were determined.By investigating characteristics of inverse oscilla...
Abstract: Flow field of the two-strand slab caster's 80 t tundish equipped with flow control devices in a certain domestic steel plant was studied.Based on this research,the effects of position and height of tundish dam on flow field were tested and analyzed.It is concluded that with a double-deck turbulence ...
Abstract: The H2 funnel-shaped mold for FTSC process can produce the slab with width of 860 mm~1 730 mm.The study on molten steel flow,heat transfer and solidification behavior of H2 mold with different widths can help to make a better understanding about metallurgical behaviors in the H2 mold and provide gui...
Abstract: Mould flux is a very important function material in continuous casting process.The viscosity of flux under high frequency electromagnetic field were tested by rotational viscosity tester and a measurement device for electromagnetic characteristics of flux viscosity under high temperature conditions....
Abstract: Rolling and cooling experiments were conducted under ultra-fast cooling(UFC) condition to investigate the influence of UFC on microstructure(including homogeneity of microstructure) and mechanical property of vanadium micro-alloyed steel.Following UFC process,there is martensite on the surface and b...
Abstract: Surface decarburization is one of the important processes in hot-rolled plate production.Decarburizing characteristics of 50CrV4 steel and its effect on hardenability of steel at 650~1 100℃ were investigated in the laboratory.According to the diffusion theory,the test data were studied through regre...
Abstract: A research was carried out to investigate the as-cast,as-rolled and as-annealed metallographic structure as well as as-annealed mechanical property and surface defects of heat-resistant austenitic stainless steel coil 309S which was produced with smelting-rolling-annealing and pickling process.The r...
Abstract: Through the method of orthogonal design,experiments were carried out to simulate the process conditions of high-temperature short-time continuous annealing and low-temperature long-time batch annealing of DC03 steel in the high-temperature chamber-type electric resistance furnace.Static recrystalliz...
Abstract: In order to eliminate the black line defect occurring on the edge of SPHC hot-rolled strip after pickling,the reasons for producing black line were investigated by means of microscope,scanning electron microscopy,energy dispersive spectroscopy and other related test equipment.The results show that t...
