钢铁钒钛

Discussion on Technical Status and Improvement Measures for Sponge Titanium Production in China

Deng Guozhu

2009, 30(2): 1-5.

Abstract(91) PDF(4)

Abstract:
This paper reviews technical status of sponge titanium production in china.After comparing technology and technique-economy indexes for five steps of sponge titanium production in world,the improvement measures are proposed to be taken to reach international advanced level of sponge titanium product...

Research of Acidolysis Performance of Acid-soluble Titanium Slag

Wang Bin, Cheng Xiaozhe, Han Kexi, Qin Xinghua, Ma Yong

2009, 30(2): 6-11.

Abstract(65) PDF(2)

Abstract:
The acidolysis performance of acid-soluble titanium slag is studied via phase and content analyzing in this paper.The experiment results show that the acidolysis rate of titanium slag was affected by the mass content of TiO₂ and Rutile and phase in titanium slag.The acidolysis performance of anosovi...

Influence of Nano-TiO₂ Content on Properties ofSEBS/TiO₂ Composites

Shi Ruicheng

2009, 30(2): 12-16.

Abstract(53) PDF(1)

Abstract:
With the use of nano-titanium dioxide as bacteriostat and surface modifier improving the compatible capability between nano-TiO₂ and SEBS, the SEBS/TiO₂ nano-composites with special use were prepared and the influence of TiO₂ dosage on composite properties was also researched.The dispersed performan...

Study on Preparation and Structure Properties of Limonite/TiO₂ Composite Photocatalysis Agent

Du Jinkui, Gong Wenqi, Rao Boqiong, Han Pei

2009, 30(2): 17-21.

Abstract(62) PDF(1)

Abstract:
Limonite/TiO₂ composite photocatalysis agent was prepared by sol-gel method in this paper.The XRD、SEM measurement and characterization and the degradation treatment experiments showed that, it had been loaded with a homogeneous TiO₂ film on its surface, and it had a firm nuclear/membrane structure, ...

Investigation on Precipitation Law of Titanium Compounds in Hot Metal Saturated with Carbon

Ding Yuehua, Li Xinsheng

2009, 30(2): 22-27.

Abstract(54) PDF(1)

Abstract:
The equilibriums between titanium compounds and titanium in hot metal saturated with carbon were investigated by oversaturation precipitation method.Experimental results showed that titanium contents balanced with Ti (C, N) in hot metal were much less than that with TiC, and the solubility of titani...

Numerical Simulation on Molten Steel Flow and Circulation Flow Rate in RH Vacuum Degassing Process

Sun Liang, Ai Liqun, Zhao Junhua, Huang Zongze

2009, 30(2): 28-32.

Abstract(38) PDF(2)

Abstract:
A three-dimensional mathematical model for the simulation of molten steel flow based on the parameters of 300 t RH-MFB has been established, discussing the factors of influencing circulation flow rate.The gas-liquid two-phase flow has been treated and described by two-fluid model.The influences of p...

Water Model Study on Optimization of Internal Structure in Six Strand Continuous Casting Tundish

Han Lihui, Wang Jingsong, Wang Yongsheng

2009, 30(2): 33-39.

Abstract(69) PDF(1)

Abstract:
The water model with 1∶3 ratio was built for studying on the flow field of Lai Steel six strand continuous casting tundish.The results showed that short road flow and side road flow were found in the original tundish, the volume of dead zone is large and the effect of mixing is bad.The flow field ch...

The Structural Optimization of Tundish and Metallurgical Effect

Tang Haiyan, Li Jingshe, Gao Jinguo

2009, 30(2): 40-45.

Abstract(69) PDF(2)

Abstract:
The flow field of four-strand tundish of round billet under three different weirs has been studied by water model experiments.The results show that a big difference in fluid flow characteristics exists between the two outlets at the same side of the tundish controlled by the original weir.Compared w...

Industrial Experiment on Desulphurization in RH Process by Using CaO+Al₂O₃ Based Fluxes with Low Fluoride

Guo Shangxing, Wang Jianjun, Zhou Li, Li Qingyun, Zhang Caigui

2009, 30(2): 46-49.

Abstract(47) PDF(1)

Abstract:
The industrial experiments on deep desulphurization by using (CaO+Al₂O₃) complex based fluxes instead of conventional CaO-CaF₂ fluxes were carried out through flux addition in RH process.The results show that the average De-S rate of 53.44% has been achieved and the sulphur content in molten steel a...

Experimental Study on Desulfurization Performance of 12CaO·7Al₂O₃ Premelted Refining Slag

Cao Yuliang, Yuan Shouqian, Lu: Ranchao, Qiu Bing, Song Meijuan

2009, 30(2): 50-54.

Abstract(104) PDF(4)

Abstract:
In the laboratory, premelting technology and desulphurization ability of premelted refining slag of 12CaO·7Al₂O₃ were studied.The results show that premelted refining slag of 12CaO·7Al₂O₃ can acquire better desulphurization effect.It can decrease the S-content from 0.048% to 0.020% with 3% premelted...

Influence of Deformation Parameters on Microstructure of Micro-alloyed High Strength Steel

Chen Zhenye, Xu Guang

2009, 30(2): 55-60.

Abstract(64) PDF(1)

Abstract:
The experiments of a micro-alloyed high strength steel under different strain, strain rates, deformation passes and cooling rates were conducted on the thermal-simulator of THERMECMASTOR-Z.The effects of deformation parameters on microstructure and phase transformation of the micro-alloyed high stre...

Key Technology Development for 360 mm×450 mm Bloom Caster at PISCO

Chen Yong, Chen Jianping, Wu Guorong, Yang Subo

2009, 30(2): 61-67.

Abstract(70) PDF(1)

Abstract:
The integrated technologies for 360 mm×450 mm bloom caster and its application results at PISCO (Panzhihua Iron & Steel Co.) were presented.The internal defects of continuous casting bloom such as center looseness, central segregation and center line cracks, were greatly reduced by optimizing se...

Effect of Added Titanium on Hot Dip Galvanizing Steel Plate

Gui Yan, Xia Caijun, Li Xiaoman

2009, 30(2): 68-70.

Abstract(64) PDF(1)

Abstract:
The effect of Ti added in Zn bath on HDG (Hot Dip Galvanizing) process of steel plate was studied using SEM.The results show that, when the titanium content in the zinc bath increased, the growth of ζ phase in coating was restrained distinctly, the thickness of coating decreased.Titanium can effecti...

Study on Micro-inclusions Behavior of Beam Blanks

Zhang Yaoping, Wang Shuoming, Zhang Shujiang, Zhang Caijun

2009, 30(2): 71-74,79.

Abstract(58) PDF(1)

Abstract:

The type, magnitude, size and distribution of non-metallic inclusions in beam blanks were researched via systemic sampling and adopting metallographic analysis and SEM/EDS, and the origin of inclusions in H beam was analyzed through method of tracer.The result show that the average of T[O] is 70.8×1...

Process,Microstructure and Properties of Thick X80 Pipeline Steel Produced by Hot Continuous Rolling

Zhu Tao, Jiang Haitao, Xu Hongxun, Tian Zhiqiang, Li Zhongyi

2009, 30(2): 75-79.

Abstract(69) PDF(1)

Abstract:

The microstructure, precipitates and mechanical properties of thick X80 pipeline steel produced by hot continuous rolling of Masteel were studied.The result shows that through reasonable composition design and rolling process, the microstructures of thick X80 pipeline steel produced by hot continuou...

Sintering Behavior,Phases and Microstructure of（Ti,V）C Steel Bonded Carbide

Gong Wei, Li Hua, Yao Xiaopeng

2009, 30(2): 80-85.

Abstract(51) PDF(1)

Abstract:

(Ti, V) C steel bonded carbide was produced by in-situ sintering technology with titanium powder, ferrovanadium powder, carbon powder, ferromolybdenum powder, ferrochromium powder and iron powder.The phases, microstructure and composition of the composites were studied by means of X-ray diffraction ...

2009 Vol. 30, No. 2