钢铁钒钛

New Technology of Producing Titanium Slag by Reducing Ilmenite at Low Temperature

Zhao Pei, Guo Peimin

2005, 26(2): 1-4.

Abstract(80) PDF(3)

Abstract:
A new technology of producing high titanium slag by reducing ilmenite rapidly at low temperature was developed. Solid state ilmenite could be reduced rapidly to iron at around 600℃ when ilmenite and the reductant were ground to around 10 μm, then the titanium slag and iron powder could be obtained b...

Technical Analysis on Selective Separation and Enrichment of Ti-bearing Blast Furance Slag Based on Phase Diagrams

Guo Peimin, Zhao Pei

2005, 26(2): 5-10.

Abstract(84) PDF(4)

Abstract:
Technical and economical feasibilities on selective separation and enrichment of titanium containing BF slag were conducted. For the route of selective separation and enrichment with calcium oxide, perovskite separates out more sufficiently when slag composition is adjusted to the region CaSiO₃-Ca₃S...

Study on Enhanced Leaching of Mechanically Activated Ilmenite

Zhang Xueqing, Li Chun, Liang Bin

2005, 26(2): 11-15.

Abstract(60) PDF(1)

Abstract:
Mechanical activation of rock-type Panzhihua ilmenite was investigated with a tumbling ball mill at 70:1 ratio of ball:ore mass. XRD analysis demonstrated the crystallite size of ilmenite decreased with the increasing of milling time, and remained practically unchanged beyond 4h of milling. The diss...

Quality Controlling Techniques in Ultra-thin Hot Strip Production Line of Tangshan Iron and Steel Co. Ltd

Feng Yunli, Chen Huahui, Chen Libin

2005, 26(2): 16-19,24.

Abstract(137) PDF(3)

Abstract:
The advanced techniques of ultra-thin hot strip production line at Tanggang were introduced, which include H² mould,dynamic soft reduction,dynamic PC control,semi-endless rolling,ferrite rolling etc. The production survey shows that the stresses in the shell in H² mould are less than in general funn...

Theoretical Calculation for Equilibrium Solubility and Compositional Coefficient of V(C,N) in V-bearing Microalloyed Steel

Yong Qilong, Liu Zhengdong, Sun Xinjun, Cao Jianchun, Cha Xiaoqin, Zhang Yong

2005, 26(2): 20-24.

Abstract(87) PDF(1)

Abstract:
According to the thermal-mechanical theory and the solubility formulae of VN and VC in austenite, the theoretical calculating methods for the solubility of V, C and N in austenite and the compositional coefficient of V(C,N) were proposed. The calculations for the typical V-bearing steels were carrie...

Microstructural Evolution and Precipitation of V(C,N) in a Low-carbon V-bearing Steel

Xu Man, Sun Xinjun, Liu Qingyou, Dong Han, Yong Qilong, Huang Jinliang

2005, 26(2): 25-30.

Abstract(78) PDF(1)

Abstract:
The microstructural evolution and micro-hardness change in a low-carbon vanadium steel ((0.058)%C-0.92%Mn-0.51%V) during isothermal holding after austenite region deformation were investigated with thermo-mechanical test, and the precipitation of V(C,N) was studied through TEM. The experimental resu...

Simulation and Validation on Flow Field in Thin Slab Continuous Casting Mold

Zhang Guifang, Shen Houfa, Wang Lei, Liu Baicheng

2005, 26(2): 31-34,53.

Abstract(82) PDF(1)

Abstract:
By using the finite difference method, the flow field in thin slab continuous casting mold was simulated according to the flow characteristics of liquid steel. The three-dimensional flow field model was set up. The effects of complex nuzzle structure on the flow field in the mold was simulated. The ...

Laboratory Study on Producing Titanium White by Acid Dissolved Titanium Slag

Zhang Shuli

2005, 26(2): 35-38,53.

Abstract(60) PDF(2)

Abstract:
According to the difference of acid dissolved titanium slag and ilmenite, the laboratory experiments of preparing titanium white from acid dissolved titanium slag were carried out. The acid dissolved titanium slag came from respectively smelting Panzhihua ilmenite and Yunnan ilmenite. The process pa...

Study on Mechano-chemical Effect for Steel Slag

Lu Lei, Wen Jinbao, Yao Qiang

2005, 26(2): 39-43.

Abstract(85) PDF(3)

Abstract:
The steel slag was activated by mechano-chemical method. It was described by a series of analysis and testing means, such as particle size testing, density testing, XRD, HRTEM and DSC-TG. The results showed that the steel slag granule was diminished speedily and the crystal structure changed evident...

Structural Optimization of BF Cast Steel Cooling Stave Based on Orthogonal Experimental Design Method

Deng Kai, Cheng Huier

2005, 26(2): 44-48.

Abstract(74) PDF(1)

Abstract:
Finite element analysis and orthogonal experimental design methods are two major mathematical tools in engineering analysis, the optimal thermal and stress performance of cooling stave can be accurately achieved by using both of the mathematical methods. The orthogonal experimental design method was...

Discussion on Economic-type Modification Schemefor CVC Cold-rolling Mill

Zhou Qingtian

2005, 26(2): 49-53.

Abstract(65) PDF(2)

Abstract:
Against the shortcomings of roll shape curve being complication for CVC rolling mill, a set of economic-type mill modification scheme to replace CVC rolling mill with new type OWBC HCW rolling mill was put forward. By means of axial moving of work roll, hydraulic bending-roll and roll shape optimisa...

Study on Weatherability of Rutile Nano-TiO₂ in Heavy-duty Coating

Song Qinggong, Yan Jiazhen, Hu Chi, Huang Wanxia

2005, 26(2): 54-57.

Abstract(73) PDF(1)

Abstract:
The weatherability of heavy-duty coating modified by rutile nano-TiO₂ was tested. In the conditions of different nano-TiO₂ ratio and different aging time, the examination results of heavy-duty coating modified by ultra-fines demonstrate that the compound nano-coatings can prevent the resin from oxid...

In-situ Synthesis VC Particulates to Reinforce Iron Matrix Composite

Cheng Fengjun, Wang Yisan, Lai Li, Shi Jianguo, Wang Jing, Ding Yichao, Yang Tinggui

2005, 26(2): 58-61.

Abstract(61) PDF(1)

Abstract:
The microstructure and the phases in composite were examined by means of SEM and XRD. It was confirmed that graphite had a function to accelerate the decompose of σ-FeV in lower temperature, and the courses were explained. The effects of sintering temperature on the distribution and size of VC were ...

Effect of In-situ Synthesis TiC Particle on Microstructures and Properties of Fe-based Alloy

Wang Ning, Gao Fubao, Li Shijie, Cao Xiaoming

2005, 26(2): 62-66,70.

Abstract(59) PDF(1)

Abstract:
The composites reinforced by TiC particle were prepared through in-situ reaction by means of adding C and Ti element to Fe-Al-B alloys. The phases transformation and the change of microstructure and chemical constitution of each phase were analyzed through X-ray diffraction (XRD) analysis, scanning ...

Wang Yuansun

2005, 26(2): 67-70.

Abstract(47) PDF(1)

Abstract:

2005 Vol. 26, No. 2