钢铁钒钛

Research on the Cabothermic Reduction of Low-grade Titanium Concentrate by Microwave Heating

Lei Ying, Li Yu, Peng Jinhui, Zhang Libo, Zhang Shimin, Guo Shenghui

2010, 31(4): 1-6.

Abstract(57) PDF(1)

Abstract:
Cabothermic reduction of Panzhihua low-grade ilmenite by microwave heating was studied in this work.The effects of preoxidation,coke ratio,additives on Fe metallization of reduced titanium concentrate were investigated.The experiment results show that under the optimum conditions of preoxidation tem...

Ball Milling Activation and Microwave Reduction of Titanium Concentrate

Li Yu, Lei Ying, Peng Jinhui, Zhang Libo, Zhang Zebiao, Guo Shenghui

2010, 31(4): 7-11.

Abstract(62) PDF(1)

Abstract:
The ball milling and followed microwave reduction of Panzhihua low grade titanium concentrate were investigated.The grain size and phase transformation of ilmenite were characterized by LPS and XRD TG techniques under different ball milling conditions.The results show that the ore particle,ilmenite ...

Experiment on Hydrogen Reduction of Titanium Concentrate

Si Zhenbing, Gu Wuan, Yuan Xizhi, Huang Dandan

2010, 31(4): 12-15,21.

Abstract(67) PDF(3)

Abstract:
With the increase of titanium demand,the research on the reasonable utilizaion of titanium concentrate shows an important meaning,especially the environmental friendly pyrometallurgical process for high titanium slag preparation becomes a hot spot.The reduction processes of titanium concentrate with...

Study on High Temperature Oxidation Behaviors of Titanium Alloy TC4 in Laboratory

Yang Xiongfei, Huang Deming, Wei Qingfeng, Zhao Tongxin

2010, 31(4): 16-21.

Abstract(72) PDF(6)

Abstract:
The oxidation behaviors of most widely used titanium alloy TC4 was investigated at four different atmosphere temperatures ranging from 850℃ to 1 050℃.The morphology of the oxidation and oxide-rich layer of TC4 was analyzed by OM and SEM.The results indicated that the oxidation layer weight addition ...

Trail on Vanadium Recovery of Low-vanadium Hot Metal

Dong Wanchun, Ge Wensun, Shi Zhe

2010, 31(4): 22-27.

Abstract(69) PDF(5)

Abstract:
Using the both converters link method that a converter is used for vanadium-recovering and another converter for steelmaking,industrial tests of low vanadium hot metal are carried out and vanadium slag of 143.2 t is obtained,according to site conditions of equipments and process and characteristics ...

Microalloying Study on HRB400 Hot Rolled Ribbed Reinforced Bar

Tang Haiyan, Li Jingshe, Yang Mingsheng, Zhang Yabin, Zheng Quanzheng

2010, 31(4): 28-32.

Abstract(56) PDF(1)

Abstract:
To improve comprehensive mechanical properties of hot-rolled ribbed reinforced bar HRB400,the effects of increasing nitrogen of nitride alloys Si₃N₄,VN and MnSiN were tested respectively.Microalloying research was carried out by the combination of nitride alloys and FeV,FeNb and FeTi.The yield stren...

Control of Stamping Properties of St37-2G Cold Rolled Steel Sheet

Duan Xiangdong

2010, 31(4): 33-38.

Abstract(45) PDF(1)

Abstract:
According to the characteristics of cover annealing process,effects of chemical compositions,cold rolled reduction and annealing process on the microstructure and properteis of the St37-2G coldrolled steel sheet were investigated sysmatically.The controlling method of the plastic strain ratio of the...

Analysis of the Formation of Cold Rolled Defects in Ti-IF Steel

Wu Weishuang, Liu Jianhua, Wang Min, Cui Heng, Bao Yanping

2010, 31(4): 39-45.

Abstract(63) PDF(2)

Abstract:
The surface defects of cold rolled Ti-IF steel sheet was studied.According to the analysis of morphology of defect area and inclusions compositions with SEM/EDS,a lot of alumina,aluminosilicate,silica and magnesia-alumina spinel in defect parts were found.Besides,the rolling simulation test of the s...

Experimental Study of Dual-Phase Type Hot-rolling Automobile Structure Steel

Wang Wei, Gu Hairong

2010, 31(4): 46-50.

Abstract(67) PDF(1)

Abstract:
The relationships of process and microstructure and properties of hot rolled dual-phase steel(DP600) were investigated by laboratory rolling and simulation of coiling.The result showed that this DP steel with C-Si-Mn-Cr was provided with ferrite and martensite,and possessed excellent properties by u...

Research on Hot Ductility of Common Grain Oriented Silicon Steel

Hou Zewang, Zhang Chen, Xiang Li, Chou Shengtao

2010, 31(4): 51-55.

Abstract(57) PDF(2)

Abstract:
High temperature mechanical property tests of common grain oriented silicon steels produced by thin slab casting and rolling route(TSCR) in laboratory have been carried out.The influence of dynamic recrystallization,precipitates and phase transformation on hot ductility of grain oriented silicon ste...

Analysis on Causes of Corner Transverse Cracks Formation for Q345B Slab

Li Juyan, Wen Guanghua, Tang Ping, Guo Qiushi

2010, 31(4): 56-61.

Abstract(88) PDF(2)

Abstract:
Features and causes of corner transverse cracks for Q345B slab were analyzed based on metallographic microscopy,scanning electron microscopy and energy dispersion scanner.The results shows that the causes of forming cracks are the chain-like manganese sulfide compound and the film-like proeutectoid ...

Analysis of Cleanliness of P12 High-pressure Boiler Steel

Yang Yan, Liu Jianhua, Bao Yanping, Zhao Peng, Hu Jiancheng

2010, 31(4): 62-66,79.

Abstract(57) PDF(1)

Abstract:
The cleanliness of P12 steel produced with EAF-LF-VD-MC process was studied systematically by sampling in various process stages in the production and with multiple analyzing techniques investigating the shape,size,quantity and component of inclusions.The results indicate that,in the refining proces...

Numerical Simulation of Electromagnetic Stirring in Bloom Continuous Casting Mold

Wei Ning, Bao Yanping, Wu Huajie, Wang Guoxin, Liu Jinjin

2010, 31(4): 67-72,85.

Abstract(58) PDF(1)

Abstract:
According to Maxwell electromagnetic field theory,the electromagnetic field during the mold electromagnetic stirring for 240 mm×280 mm bloom casting was simulated by means of ANSYS software.The effects of the current intensity,frequency,and mold copper on magnetic field distribution in the electroma...

Numerical Simulation and Trial of the Fluid Flow in a Six-strand Tundish for Billet and Round Billet Caster

Huang Guangdong, Wen Guanghua, Tang Ping, Zhu Mingmei, Li Jianquan, Zhu Yicai

2010, 31(4): 73-79.

Abstract(49) PDF(1)

Abstract:
Based on the numerical simulation,fluid flow and heat transfer of molten-steel in a curved shape six-strand tundish for the billet and roud billet caster under different conditions(bare tundish and tundish with flow control device) were analyzed.The results showed that the tundish with flow control ...

Physical Simulation and Analysis of Flow Field of the Slab Mold

Dang Aiguo, Ren Ziping, Chen Yuanqing, Peng Shiheng, Liu Kun

2010, 31(4): 80-85.

Abstract(71) PDF(2)

Abstract:
With the slab mould of Lianyuan Iron and Steel Copany(LISC) as a prototype,the hydraulic model experiment is carried out.Through adjusting the casting speed and nozzle immersion depth,the flow form,Liquid surface wave and flow field impact depth are studied.the best parameters of slab caster for eac...

Numerical and Cold Simulation on Gas Jet of Nozzle for Steel Slag Granulation

Li Junguo, Ceng Yanan, Han Zhijie, Long Yue, Xing Hongwei, Zhang Yuzhu

2010, 31(4): 86-91,97.

Abstract(47) PDF(2)

Abstract:
Granulation of liquid steel slag is the key process during heat recovery.The structure of gas nozzles and their layout should be designed to ensure solidification of slag drops before they falling to the ground.The flow field of gas jet with different structure was simulatd by Fluent software,and th...

Preparation of Soft Magnetic Ferric Oxide Powder from Purified Synthetic Rutile Mother Liquor

Wang Yanhua, Liang Ying

2010, 31(4): 92-97.

Abstract(73) PDF(1)

Abstract:
An investigation was made into the form of impurities like silicon,aluminum,calcium and magnesium present in the synthetic rutile mother liquor,which have some effects on the magnetic property of materials.By controlling pH value of the liquor and adding precipitation agent,a purified solution conta...

2010 Vol. 31, No. 4