钢铁钒钛

Experiment on the Conditions of Fluidization for Titanium Concentrate

Tan Liang, Yuan Xizhi, Zhang Yunling

2010, 31(2): 1-5,14.

Abstract(62) PDF(2)

Abstract:
The minimum velocity for gas to keep fluidization and fluidization quality for titanium concentrate were explored at different conditions that are titanium concentrate grain, layer height for reactant, and porosities on the distribution plate.It is shown that the porosities and layer height has litt...

Preparation of Tungsten-doped VO₂ Thin Film with Low Phase Transition Temperature by Hydrogen Reduction Method

Li Minjiao, Zhang Shulin, Ding Xiumin, Luo Yi, Xiong Miao

2010, 31(2): 6-9.

Abstract(55) PDF(1)

Abstract:
V₂O₅ film was first fabricated by dipping a glass slide into a V₂O₅ gel containing a small quantity of polytungstate sol.Then the V₂O₅ film was reduced in hydrogen atmosphere at 400℃ for 3 h and then a tungsten-doped VO₂ thin film was prepared.The resulted film shows the characteristic green of VO₂....

Experimental Investigation on Fluidity of Hot Metal Bearing Titanium

He Yuanyuan, Liu Qingcai, Yang Jian, Chen Qianxiang, Ao Wanzhong

2010, 31(2): 10-14.

Abstract(119) PDF(4)

Abstract:
In allusion to the features that hot metal bearing Ti is easy to become viscous, the impact of [Si], [Ti] content on viscosity, melting temperature, and flow properties of hot metal was studied in the lab..Relationship between the solubility of titanium in molten iron and the temperature changes was...

Determination of the Particle Size Distribution of Metatitanic Acid by Photon Correlation Spectroscopy

Tian Congxue, Hu Hongfei, Du Jianqiao, Chen Xinhong, Ma Weiping, Luo Jianlin, Liu Daijun

2010, 31(2): 15-19.

Abstract(70) PDF(1)

Abstract:
In order to measure the particle size distribution(PSD) of metatitanic acid slurry, hydrolyzed from sulfate titanium dioxide process, the influencing factors of dispersion methods and measurement conditions on the PSD of metatitanic acid were investigated by photon correlation spectroscopy(PCS).Disp...

Experimental Study on the Ti Microalloyed Q345E Steel

Wang Jianfeng, Deng Shen, Rao Jiangping, Li Guangqiang, Zhang Feng

2010, 31(2): 20-25.

Abstract(85) PDF(4)

Abstract:
The high performance Q345E steel with high yield strength and stable low-temperature impact toughness was made by Titanium microalloying technology.The microstructure of developed Q345E steel is composed of ferrite, pearlite and a little tempered sorbite.Slow cooling and fast cooling experimental re...

Effect of Hot Rolling Parameters on the Microstructure and Properties of Ti Microalloyed Steel Produced by Compact Strip Production

Huo Xiangdong, Mao Xinping, Yang Qingfeng, Chai Yizhong, Chen Kangmin

2010, 31(2): 26-31.

Abstract(81) PDF(2)

Abstract:
Experimental methods, such as SEM, TEM and chemical phase analysis, were used to study the effect of hot rolling parameters on the microstructure and properties of Ti microalloyed steel produced by compact strip production.The results show that the yield strength and tensile strength of steel were 8...

Application of Thermodynamics on Reaction of Carbochlorination of Titania-rich Slag in Molten Salt Chlorination

Ju Dianchun, Yan Dingliu, Li Xiangyang, Ma Enquan, Zang Yingbo, Li Junqiang

2010, 31(2): 32-36.

Abstract(71) PDF(1)

Abstract:
It is the major factor that combustion reaction of the return of oxygen in chlorine with petroleum coke affecting the temperature of molten salt chlorinator by calculation and analysis of carbochlorination thermodynamic of all oxides of titania-rich slag, temperature stability controlling is the key...

Thermodynamic Analysis on Oxidative Roasting of High Titanium Slag

Lu Hui, Xie Gang, Yu Xiaohua, Tian Lin, Hou Yanqing, Xie Hongyan

2010, 31(2): 37-41.

Abstract(97) PDF(1)

Abstract:
The changes of phase structure and chemical compositions in high titanium slag are studied by oxidative roasting experiment in this paper.Furthermore, the thermodynamic behavior of each component of high titanium slag in the high temperature roasting process is discussed.The result indicated that mo...

Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel

Chang Lizhong, Yang Haisen, Li Zhengbang

2010, 31(2): 42-48.

Abstract(75) PDF(1)

Abstract:
A thermodynamic model of the microalloyed elements precipitation in austenite region for Fe-C-N-Al-Ti-V steel has been established.The computing results show that vanadium can precipitate from the austenite as long as the amount of nitrogen and vanadium can be increased although the solubility of V ...

Water Modeling on Gas Blowing in Tundish and Slag Entrapment

Wang Haiqi, Bao Yanping, Tang Dechi

2010, 31(2): 49-52.

Abstract(86) PDF(3)

Abstract:
According to tundish prototype at steel work, the water model with linear scale ratio 1:3 of model and prototype has been established.Fluid flow behavior and entrapment phenomenon at the interface between slag and metal in tundish with gas curtain were studied by water model, the effect of gas flow ...

Numerical Simulation of Temperature Field in the Process of Wearing Water-cooled of Angle Steel

Yin Xiangguang, Ren Jitang, Xin Xiaobing

2010, 31(2): 53-57.

Abstract(70) PDF(1)

Abstract:
The prediction model of temperature field in the process of wearing water-cooled of angle steel was set up using ANSYS finite element analysis software.In the process of wearing water-cooled of the angle steel, it's thermal boundary conditions were studied, the finite element numerical simulation wa...

Influence of Microstructure and Mineral Compositions of Vanadium-titanium Sinter on its RDI

Wang Wenshan, Ren Gang, Lv Qing, Sun Yanqin

2010, 31(2): 58-62.

Abstract(76) PDF(1)

Abstract:
Vanadium-titanium sinter has a complex liquid composition, which exists the phenomena such as low productivity, poor drum strength and serious RDI.In this paper, aiming at the serious RDI of Chengde steel sinter, we study the mechanism of RDI through analyzing the mineral compositions and microstruc...

Study on Clogging Mechanism of Submerged Entry Nozzle for Continuous Casting of Ferritic Stainless Steel Containing Ti

Zhang Hejia, Chen Weiqing, Wu Difeng, Zheng Hongguang

2010, 31(2): 63-66,76.

Abstract(86) PDF(2)

Abstract:
The types of inclusions and the phases of clogging of submerged entry nozzle in 00Cr18Ti stainless steel were investigated by optical microscope and scanning electron microscope(SEM), and meanwhile the mechanism of nozzle clogging was studied.The results showed that a lot of titania inclusions exist...

Influence of Compositions and Process on Behaviors of Axle Steel for Railroad Vehicles

Yang Xiongfei

2010, 31(2): 67-71,87.

Abstract(78) PDF(1)

Abstract:
The effects of chemical compositions, deformation temperatures and cooling rates on mechanical properties and microstructures of axle steel for railroad vehicle was investigated through comparison tests and thermo-mechanical simulation tests.Then, based on the front experiment, a new steel with 0.40...

Study on Corrosion Resistance of 200 Series Stainless Steel

Qi Da, Li Jing, Dong Li, Yu Jian

2010, 31(2): 72-76.

Abstract(111) PDF(2)

Abstract:
Corrosion resistance of 200 and 304 series stainless steel has been studied by means of potentiodynamic polarization curves in 3.5% NaCl solution and salt spray test.Resultsshow that pitting corrosion resistance and uniform corrosion resistance of 304 series stainless steel is much better than that ...

Study of Parameters and Techniques for Chromium-electrodeposited Texturing

Tan Yong, Yu Xiaozhong, Liu Changsheng, Sun Jie

2010, 31(2): 77-80.

Abstract(65) PDF(1)

Abstract:
The textured rollers produced by the conventional techniques have some disadvantage performances that include rapid roughness attenuation, limited use time and more pits on roller surface, which are not suitable for the formation of roughness on the cold roller surface.In order to increase the servi...

Ultra-high Basicity Sintering Production Practice of Pangang

He Muguang, Zhang Yixian, Rao Jiating, Li Yuhong

2010, 31(2): 81-87.

Abstract(124) PDF(1)

Abstract:
Through Panzhihua V-Ti magnetite concentrate ultra-high basicity sintering production practice, the characteristics of ultra-high basicity sintering production are explored.The process should strengthen the use of quick lime and activity of ash, improve the agglomerate ratio of solvent, and take thi...

Optimizing Capability of Mould Flux to Improve the Surface Quality of Billet for Cold Forging Steel

Yang Hao, Tang Ping, Sun Wei, Wang Kaizhong, Wu Jian, Xu Jian, Zhang Jiexin

2010, 31(2): 88-92.

Abstract(96) PDF(3)

Abstract:
Hook type of oscillation mark was the primary problem about surface quality of strand which was used to product 35K cold Forging steel.The reason that induced hook type of oscillation mark was the poor lubrication of mould flux.On one hand, hook type of oscillation mark would make surface defects on...

2010 Vol. 31, No. 2