钢铁钒钛

Preparation of Doped Porous Titania from Industrial Titanyl Sulfate and its Catalytic Activities

Tian Congxue, Yang Ying, Pu Hong

2011, 32(3): 1-6.

Abstract(77) PDF(2)

Abstract:
Doped porous titania with anatase phase was prepared via thermal hydrolysis of industrial titanyl sulfate solution as titanium source,by adjusting the index of the titanium solution and the volume ratio of titanium solution to water.The as-prepared samples were characterized by XRD,particle size dis...

Preparation and Photocatalytic Activity of the N-Fe co-doped TiO₂ by Hydrothermal Method

Cao Yan

2011, 32(3): 7-11.

Abstract(76) PDF(1)

Abstract:
Using tetra-4-butyl titanate as precursor,NH₄NO₃ and Fe(NO₃)₃·9H₂O as dopants,the N-Fe co-doped TiO₂ were synthesized through hydrothermal method.The size,appearance,structure and property of TiO₂ were characterized by XRD,FE-SEM,UV-VIS,BET and FT-IR.The results showed that the co-doped TiO₂ powders...

Study on the Ultra High Cycle Bending Vibration Fatigue Test of Titanium Alloys

Shen Jingsheng, Li Quantong, Wu Xiaofeng, Gao Chao, Liu Qingchuan

2011, 32(3): 12-15.

Abstract(80) PDF(2)

Abstract:
Based on the three-point bending method,an ultra high cycle bending vibration fatigue system is developed and the design method of fatigue test specimens is introduced too.The S-N curve of titanium alloy TC17 is determined by the ultra high cycle dissymmetrical bending fatigue system(20 kHz).The res...

Influence of Vanadium on Thermal Healing of the Inner Cracks in Q235 Steels

Zhao Zhongli, Wu Daming, Zhang Yajun

2011, 32(3): 16-20.

Abstract(57) PDF(1)

Abstract:
Thermal healing experiment of inner cracks made by compressing a drilled hole on samples of Q235 steel with various vanadium addition was carried out.The effects of vanadium on inner cracks thermal healing and morphology evolution were investigated.SEM analysis results displayed that inner crack sam...

Effect of Micro-Ti Treatment on Microstructure and Mechanical Properties of V Microalloyed Steel

Guo Fuxing, Zhang Junfen, Zhao Yingli, Wang Baohua, Liang Jingzhao

2011, 32(3): 21-24.

Abstract(82) PDF(4)

Abstract:
V and Ti-V microalloyed steels were produced in Chenggang 1780 hot rolling line.The effect of micro-Ti treatment on microstructure and mechanical properties of vanadium microalloyed steels has been studied in this paper.The experimental results demonstrate that a little amount of TiN precipitation c...

Thermodynamic Analysis of Ca²⁺ and Mg²⁺ Curing Process in Molten Chlorides

Ju Dianchun, Qing Yang, Yan Dingliu, Chen Zhiyong, Li Xiangyang

2011, 32(3): 25-29.

Abstract(68) PDF(2)

Abstract:
The reasons of deterioration of physical and chemical properties of molten chlorides during molten-salt chlorination of titania-rich slag were discussed,and a process of curing of Ca²⁺ and Mg²⁺ in molten chlorides was proposed which can improve the properties of molten chlorides,also the feasibility...

Research on Reasonable Selecting Rail in the Line with Notable Damage of Contact Fatigue

Deng Jianhui, Chen Chaoyang, Xu Quan

2011, 32(3): 30-33.

Abstract(86) PDF(2)

Abstract:
In the main line transporting both passenger and freight with notable damage of contact fatigue,the paving trial of 1 100 MPa heat treated rail,U75V rail,and U71Mn rail have been carried out.The result indicates that the 1 100 MPa heat treated rail's contact fatigue resistance properties are better ...

Formation Mechanism of a Sliver-type Defect on the Surface of Hot Rolled Plate

Yang Wen, Wang Xinhua, Wang Wanjun, Xue Yongqiang, Dan Qinglin

2011, 32(3): 34-39.

Abstract(84) PDF(5)

Abstract:
A sliver-type lineal defect on the surface of hot-rolled Q345B plate was investigated.The morphology,structure and component of the defect's cross and longitudinal sections were analyzed by using optical microscope and SEM-EDS.The results showed that the defect with concavity is a wrinkle type defec...

Effect of Coiling Temperatue and Cold-rolling Reduction on the Properties of High Strength IF Steel

Zheng Zhiwang, Wang Minli, Li Xusheng

2011, 32(3): 40-45,50.

Abstract(63) PDF(1)

Abstract:
Two industrial produced hot-rolled high strength IF steel strips were cold rolled in laboratory cold rolling mill,and then annealed in salt bath according to the process of a continuous hot-dip galvanizing line.Optical microscopy and tensile tests were used to study the effect of coiling temperature...

Control of Inclusions of Non-oriented Silicon Steel Sheets by RE Treatment

Zhang Feng, Lü Xuejun, Wang Bo, Ma Zhigang, Zhang Yi, Li Guangqiang

2011, 32(3): 46-50.

Abstract(97) PDF(4)

Abstract:
Based on the industrial production of non-oriented silicon steel,the experiment on RE treatment during the RH refining process was studied.The morphology and the size distribution were observed for the steel specimens treated with different RE treatment conditions.Further more,the formation and chan...

Research on the Microstructure and Anti-corrosion Property of Magnesium Chromate Insulation Coating on Non-oriented Silicon Steel

Kong Xianghua, Sun Ruihong, Tang Jin, Li Wenhao, Wang Gengchao, Wang Yuanji

2011, 32(3): 51-54.

Abstract(80) PDF(1)

Abstract:
In this paper,the microstructure and anti-corrosion property of magnesium chromate coating on non-oriented silicon steel were studied.The microstructure was observed by SEM and AFM.The anti-corrosion properties were evaluated by polarization curves.The results show that the thickness of coating is s...

Microstructure and Corrosion Resistance of Hot Dip Zn-Sn-Ni Alloy Coatings

Gui Yan

2011, 32(3): 55-58.

Abstract(49) PDF(1)

Abstract:
In this paper,0.36% silicon-containing steels were used and the growth dynamics and microstructure of hot dip galvanized Zn-Sn-Ni(w_Ni ≤ 0.12%,w_Sn=1%) coating of those steels at 450℃ were studied in a series of galvanizing experiments and by various of testing methods such as SEM,electrochemical pola...

Segregation of Boron in Ultra Low Carbon Microalloyed Steels Containing Copper during Continuous Cooling

Zhao Shoutian, Wu Ping, Chen Sen, Zhao Xin

2011, 32(3): 59-63.

Abstract(59) PDF(1)

Abstract:
By means of particle tracking autoradiography(PTA),the segregation of boron to grain boundaries in ultra low carbon microalloyed steels during cooling from 1 150℃ to 850℃ at 5℃/s was investigated.The enrichment factors and widths of boron depletion zone were measured at different temperatures,and th...

Analysis of Mechanical Properties and Microstructure of Q235 H-beam Steel after Hot Rolling and Fast Cooling

Lu Huaimin, Wang Kaizhong, Wu Shengfu, Huang Zhenyi

2011, 32(3): 64-69.

Abstract(101) PDF(3)

Abstract:
Ferrite grain size and mechanical properties of Q235 H-beam steel after hot rolling and fast cooling were concerned with austenite grain size and cooling rate.Under experimental conditions of the Masteel's built cooling system and common rolling process and constant water pressure and flow density,d...

Production Practice of Clean Steel in Pangang

Yang Senxiang

2011, 32(3): 70-75.

Abstract(52) PDF(1)

Abstract:
The equipment and technical level of steelmaking plant in PISCO(Panzhihua Iron & Steel Co.) have been introduced briefly.To achieve the production of clean steel in recent years,some effective technologies in hot metal pretreatment,converter smelting,desulfurization,deoxidation and dephosphoriza...

Analysis of Surface Sliver Defect on Cold Rolled and Cold Rolled Galvanizing Sheet

Zhang Hejia, Chen Liansheng

2011, 32(3): 76-81.

Abstract(66) PDF(5)

Abstract:
The reason on the surface sliver defect of the cold rolled steel sheet and galvanized steel sheet was analyzed with optical microscopy,scanning electron microscopy and energy disperse spectrometer.Comprehensively,the bubble,inclusion in the continuous cast slab and oxide scale are the main reason of...

Drawing Brittle Fracture Causes Analysis of Large Gauge High Carbon Steel 82B Wire Rod

Zhang Jidong, Zhi Jianguo, Lü Gang, Su Cheng

2011, 32(3): 82-86.

Abstract(196) PDF(20)

Abstract:
The causes of drawing cleavage brittle fracture of large gauge high carbon steel 82B wire rod are analyzed by carrying out metallographic structure inspection and analysis.They are found out as the result of Mn,Cr central segregation causing formation of martensite in the centre of the wire rod,and ...

Research Progress of the Application of Microwave Heating in the Metallurgy Field of Vanadium and Titanium Magnetite

Yu Wenhua

2011, 32(3): 87-96.

Abstract(69) PDF(1)

Abstract:
The mirowave heating characteristics of vanadium and titanium magetite and application satus of microwave heating technology in vanadium and titanium magnetite metallurgy are summarized.According to the reality of rich vanadium-titanium magnetite in Panzhihua-Xichang erea unrealized iron,vanadium,ti...

2011, 32(3): 97-98.

Abstract(55) PDF(1)

Abstract:

2011 Vol. 32, No. 3