钢铁钒钛

Calcination Time Effects on Anatase White Pigment Production via Low Concentration Industrial Titanyl Sulfate Solution Hydrolyzing

Tian Congxue, Huang Shuanghua, Yang Ying, Ren Xiaoqing, Li Hui, Yang Cheng

2012, 33(5): 1-5.

Abstract(93) PDF(2)

Abstract:
Using low concentration industrial titanyl sulphate solution as raw material,anatase titania white pigment was prepared via the sulphate process of hydrolyzing,washing,salt treatment and calcination.And the effects of calcinations holding time at the highest temperature on structure and pigment prop...

Leaching of Water Quenched Titanium-bearing Blast Furnace Slag in Hydrochloric Acid

Zhang Peng, Liu Daijun, Mao Xuehua, Chen Jianjun

2012, 33(5): 6-9.

Abstract(75) PDF(4)

Abstract:
Following ironmaking process in BF,a great deal of titanium is brought from iron conentrate into slag.In order to recycle the titanium in water-quenched Ti-bearing blast furnace slag,hydrochloric acid is used in the leaching process.Possible influencing factors on leaching rate are investigated.The ...

Study on Reducing Soluble Vanadium in the Vanadium-bearing Residue

Wu Zhenxiu

2012, 33(5): 10-13.

Abstract(54) PDF(2)

Abstract:
In view of too high soluble vanadium in the residue during continuous leaching and filtration of vanadium-bearing clinker using the belt filter in a vanadium plant,simulation and optimization experiments were carried out in laboratory to probe into the effects of particle size of clinker,residue was...

Effects of Al Content on Phase Transformation in FeV50 Alloy and Its Mechanism

Xian Yong

2012, 33(5): 14-18.

Abstract(67) PDF(2)

Abstract:
FeV50 alloys with different Al contents were smelted and cooled to room temperature in the furnace,then their phases and microstructures were investigated by X-ray diffraction（XRD）and scanning electron microscope（SEM）respectively.The results showed that with the increase of Al content in FeV50,the p...

Studies on Photocatalyic Properties of ATP-SnO₂-TiO₂ Composite Photocatalysts

Dong Xingsheng, Si Naichao, Si Songhai, Zhou Guanghong

2012, 33(5): 19-24.

Abstract(77) PDF(1)

Abstract:
Photocatalytic removal of formaldehyde under ultraviolet radiation has been studied using attapulgite base composite photocatalysts（ATP-SnO₂-TiO₂）,which were synthesized by an in situ sol-gel technique with a carrier of attapulgite.The composites were characterized by X-ray diffraction（XRD）,transmis...

Strengthening Mechanism of Ti(C_yN_1-y) Particle on Metal Matrix Composite Layer by Laser Cladding

Qi Yongtian, Cao Zhaoxia, Cao Runping

2012, 33(5): 25-29.

Abstract(53) PDF(1)

Abstract:
Fe-based composite layer with Ti（C_yN_1-y） particles was prepared on the surface of cast steel by laser cladding process using transverse CO₂ laser beam as inducing heat source.The microstructures and strengthening mechanism of laser clad layer were analyzed by means of optical microscopy（OM）,X-ray di...

Comparative Study on Softening-melting Properties Between V/Ti-bearing magnetite pellet and Common Pellet

Yang Guangqing, Zhang Jianliang, Shao Jiugang, Wen Yongcai, Rao Jiating, Fu Weiguo

2012, 33(5): 30-34.

Abstract(86) PDF(3)

Abstract:
The softening-melting properties of the V/Ti-bearing magnetite pellet and four kinds of common pellets were researched through simulating the conditions of blast furnace in the laboratory,and the difference between V/Ti-bearing magnetite pellet and common pellet in the process of softening-melting w...

Course Analysis and Prediction Principle of Steel Leakage in Continuous Casting Mold

Xu Hailun, Ma Chunwu, Li Qingzhong, Xing Wei, Xu Yongbin

2012, 33(5): 35-40.

Abstract(103) PDF(1)

Abstract:
Course and characteristics of sticking leakage of molten steel in mold was introduced and appearance feature of tear position in sticking shell was unveiled in this paper.Expansion pattern of tear lines caused by sticking and characteristics of temperature transmission in the process of sticking wer...

A Method for Solving the Inverse Heat Conduction Problem During Aerosol Cooling Process

Zhao Zengwu, Zhao Lifeng, Zhang Yazhu, Zhou Liping, Zhang Mengyun, Hu Qiang

2012, 33(5): 41-45.

Abstract(80) PDF(1)

Abstract:
A mathematical model was established in this paper to deduce unknown surface temperature and surface heat flux density in the process of 1-d unsteady state thermal conductivity based on the temperatures measured at each internal temperature measuring point in casting strand.Difference equation for e...

Water Modeling Experiment on Factors of Casting Process to Intermixed Slab Length during Grade Transition

Bi Jinghan, Tang Ping, Wen Guanghua, Ding Ling, Su Gang

2012, 33(5): 46-49.

Abstract(89) PDF(2)

Abstract:
Taking the No.1 continuous caster of Chongqing Iron and Steel Co.,Ltd.as a prototype,water modeling experiments were conducted to simulate continuous casting during grade transition.The dimensionless concentration profiles along slab length under different casting speed,residual steel level in tundi...

Thermodynamic Analysis and Control of the Precipitation of TiN in Titanium-bearing Gear Steel

Ge Yunzong, Wang Jianjun, Yan Huicheng, Qiu Shengtao

2012, 33(5): 50-54.

Abstract(88) PDF(2)

Abstract:
The themodynamic analysis on titanium nitride’s formation was carried out in order to control its precipitation in the tested steel.The results show that no TiN inclusions can be found in molten steel at temperature above liquidus;during solidification of molten steel,thanks to the enrichment of Ti ...

Research on the Mathematical Modeling for Dynamic Recrystallization of V-N Microalloyed Steel

Zhao Baochun, Zhao Tan, Li Guiyan

2012, 33(5): 55-59.

Abstract(67) PDF(1)

Abstract:
Single-pass compressing tests were performed with the Gleeble-3800 thermo-mechanical simulator at the temperature of 900 ℃ to 1 050 ℃ and strain rate of 0.1 s^-1 to 10 s^-1 to investigate the dynamic recrystallization behavior of a kind of vanadium-bearing microalloyed steel and the stress-strain curv...

Research and Application of High Temperature Deformation Resistance in Low-alloy Steel with Vanadium

LIU Yong

2012, 33(5): 60-65.

Abstract(91) PDF(1)

Abstract:
By the MMS-200 testing machine for thermal simulation,researched the deformation resistance in 850~1 100 ℃ temperature for vanadium low-alloy steel whose tensile strength is 510 MPa and analyzed deformation temperature,deformation speed and deformation extent to influence the deformation resistance ...

Comparative Study on Precipitation Behavior and Texture Formation of Ti-IF Steel and Nb+Ti-IF Steel during Batch Annealing

Feng Yanqing, Wang Fuming

2012, 33(5): 66-69.

Abstract(50) PDF(1)

Abstract:
Precipitation behavior and texture formation of the two interstitial-free steels with Nb and without Nb addition during cold rolling-batch annealing process were investigated by using metallographic microscope,scanning electron microscope（SEM）,transmission electron microscope（TEM） and X-ray diffract...

Investigation into Causes of Cracking of HP295 and Countermeasures

Chen Xingfu, Yang Tongli, Xiao Jiming, Zhu Ning, He Xiaofeng, Zhou Qiulan

2012, 33(5): 70-74.

Abstract(72) PDF(1)

Abstract:
Cracks have been found during deep processing of the HP295 supplied by a hot rolling plant of an iron ＆ steel company.In order to solve this problem,based on analysis of mechanical properties and microstructure of HP295,chemical compositions and rolling processes are optimized by lowering the conten...

Study on Microstructure and Properties of 590L Auto Beam Steel and Its Trial Production

Dou Zhiyong, Huang Bin, Luo Youyuan

2012, 33(5): 75-79.

Abstract(85) PDF(2)

Abstract:
Through rolling simulation of 590L auto beam steel,microstructure and properties of the steel under different microalloying conditions are investigated.Research results show that microstructures of acicular ferrite and a small amount of bainite obtained from microalloying with Nb,V,Ti,and B can sati...

Process Control and Defect Formation Mechanism of 321 Stainless Steel

Wang Jianze, Tang Xingchang, Hu Weihua, Kang Yonglin

2012, 33(5): 80-83.

Abstract(68) PDF(1)

Abstract:
The technical features of 321 stainless steel produced by steekle mill were introduced in this paper,including its alloying design,process control and mechanical properties.Morphology of the inclusions and the surface defects of the steel were analyzed by OM and SEM.The results showed that the 321 s...

Influence of Microstructure on Erosion Behavior of 3Cr13 Stainless Steel

Wang Haishuai, Wang Shuqi, Zhu Tao, Mao Yishu, Yu Jianping

2012, 33(5): 84-88.

Abstract(80) PDF(1)

Abstract:
The liquid/solid erosion wear tests were conducted for 3Cr13 steel which had been tempered at different temperatures on the self-made jet-type erosion wear tester.The effects of microstructure on erosion behavior of 3Cr13 steel were investigated,and erosion mechanisms were also discussed.Results sho...

Study on Texture Evolution of 50W600 Non-oriented Silicon Steel During Grain Growth

Pu Chunlei, Xiang Li, Qiu Shengtao, Song Ning

2012, 33(5): 89-95.

Abstract(78) PDF(1)

Abstract:
The mechanism of recrystallized texture evolution of non-oriented silicon steel during grain growth has been studied by using EBSD technology.The results show that texture evolution during recrystallized grain growth originates from different growth rates of texture components;grain size is not the ...

Comparative Research on Properties of High-strength AH32 Uncoiled and Leveled Plate and AH32 Medium Plate

Dong Zhongqi, Yuan Zhixue, Li Junsuo, Han Tiwen, Chen Jin, Ma Shuiming

2012, 33(5): 96-100.

Abstract(130) PDF(2)

Abstract:
Comparative research on mechanical properties（including tensile strength,yield strength,elongation and residual stress） and the microstructure of AH32 uncoiled and leveled plates produced with new process and conventional AH32 medium plates in the thickness range of mm, mm, mm, mm was carried out.Th...

Research on Wear Behavior of 3Cr3Mo2V Cast Steel and 3Cr13 Steel

Mao Yishu, Cui Xianghong, Wang Shuqi, Li Dongsheng

2012, 33(5): 101-106.

Abstract(71) PDF(1)

Abstract:
Dry sliding wear tests were performed for 3Cr3Mo2V cast steel and 3Cr13 steel at 25 ℃ and 200 ℃ on a pin-on-disk wear tester.The effect of microstructures and tribo-oxides on the wear behavior of 3Cr3Mo2V cast steel and 3Cr13 steel was probed into and the wear mechanism was also discussed.The result...

2012, 33(5): 107-108.

Abstract(72) PDF(1)

Abstract:

2012 Vol. 33, No. 5