钢铁钒钛

Numerical Simulation of Injection of Coke Oven Gas with Oxygen Enrichment to the Blast Furnace

Gao Jianjun, Guo Peimin

2010, 31(3): 1-5.

Abstract(71) PDF(2)

Abstract:
The blast furnace is divided into two zones of hot zone and solid furnace charge zone.Based on the material and heat balance, according to lager-scale blast furnace production data, the mathematical model of injection of coke oven gas to blast furnace is established.The calculation results show that...

Study on Extracting Vanadium from Stone Coal Calcine by Pressure Alkaline Leaching

Xiao Chao, Xiao Liansheng, Ding Wentao

2010, 31(3): 6-9.

Abstract(41) PDF(1)

Abstract:
Considering that extracting V₂O₅ from coal-stone by "roasting-alkali leaching" process exist some serious problems such as abundant alkali consumption, long leaching time and leaching solution with high impurity content and so on, the experiment of extracting V₂O₅ from stone coal calcine by pressure...

Extraction of Low Grade Vanadium Ore by Acid Leaching Process

Li Xin, Wang Yi, Zhu Jun

2010, 31(3): 10-14.

Abstract(61) PDF(3)

Abstract:
According to the problems existing in current process for extracting vanadium, the screening classification of a low-grade vanadium ore were investigated, and the acid leaching process for vanadium extraction from the vanadium ore concentrated for tailing discarding was researched based on the miner...

Study on the Reduction of 1～3 mm Iron Ore Powder by CO in Fluidized Bed

Pang Jianming, Guo Peimin, Zhao Pei

2010, 31(3): 15-19,24.

Abstract(57) PDF(1)

Abstract:
The reduction behavior of ore powder by co in homemade kg-scale fluidized bed was studied.The reduction degree of the sample increases and the utilization ratio of gas decreases when the reaction lasts longer time, which indicates that the reaction is faster at the beginning of reduction, while it b...

Research on the Non-reactive Mold Powder for High Aluminium Steel

Wang Huan, Tang Ping, Wen Guanghua, Yu Xiong

2010, 31(3): 20-24.

Abstract(54) PDF(1)

Abstract:
The SiO₂ component of the traditional mold fluxes can easily been deoxidized by the Al contained in liquid high aluminium steel.So a series of mold fluxes containing lower SiO₂ was designed to solve this problem, and their viscosity-temperature curves and melting points were tested.The results showe...

Effect of Annealing on Low-carbon and Low-silicon Non-oriented Silicon Steel Produced by TSCR

Kuang Yuanhui, Li Jianjun, Yue Erbin, Chou Shengtao, Shi Zhe

2010, 31(3): 25-29,49.

Abstract(64) PDF(1)

Abstract:
The effect of annealing at 850~1 000℃ on structure, precipitate, texture and magnetic properties of 0.5 mm low-carbon and low-silicon cold-rolled non-oriented silicon steel produced by TSCR has been researched.Meanwhile, the impact of annealing at 950℃×5 min and 950℃×7 min has been compared.The resu...

Study on Flaking Resistance of Hot-dip Galvanizing Coating

Guo Taixiong, Jin Yongqing, Zhang Yong, Liu Chunfu

2010, 31(3): 30-33.

Abstract(44) PDF(2)

Abstract:
For the issue of flaking of the hot-dip galvanizing coating during drawing, the microcosmic characteristics of the coatings have been analyzed and experiments have been done to investigate the influence of coating thickness, Al content and steel substrate strength on its flaking-resistance.The resul...

Research on High Temperature Mechanical Properties of GCr15 Bloom

Li Jianquan

2010, 31(3): 34-37.

Abstract(57) PDF(3)

Abstract:
The high temperature mechanical properties of GCr15 bloom, such as yield strength, tensile strength, hot elasticity and hot ductility, have been detected by thermal-tensile tests using a Gleeble-1500D system respectively.The thermal-tensile tests show that the yield strength, tensile strength, elast...

Influence of Turbulence Controller on Inclusion Removal in T-type Tundish

Wang Lei, Wang Qian, Chen Yongshu, Zhang Guoxing

2010, 31(3): 38-43.

Abstract(61) PDF(1)

Abstract:
The influence of turbulence controller on inclusion removal was studied by means of water modeling experiments and numerical simulation.The moving trajectories of inclusion particles in tundish were compared with and without turbulence controller.By use of the turbulent controller, the molten steel ...

Study on Optimization of Flow Control Devices in Two Strand Slab Continuous Casting Tundish

Li Jiao, Li Jingshe, Yang Shufeng, Sun Liyuan, Lin Xiaochuan, Bai Ruiguo

2010, 31(3): 44-49.

Abstract(60) PDF(1)

Abstract:
Based on the similar theory, water model of two strand slab continuous casting tundish was established in the ratio of 1:3.The inner structure of tundish is optimized by the combination of weirs and dams with different heights and positions.The experiment results show that the minimum residence time...

Research on Cleanliness of 27SiMn Steel Produced by BOF-LF-CC Process

Sun Liyuan, Li Jingshe, Tang Haiyan, Li Jiao

2010, 31(3): 50-53,58.

Abstract(55) PDF(1)

Abstract:
The cleanliness of 27SiMn tube billet produced by BOF-LF-CC process in a domestic steel mill is studied by the way of sampling systematically and comprehensive analysis.The results show that the quantity of microinclusions decreases from 35.0 to 8.4 per square millimeter after LF.The quantity of tot...

Research on Slag-conglomerating Agent of Pure Magnesium Desulphurization in Hot Metal

Chen Yongshu, Wang Qian, He Shengping, Wang Lei

2010, 31(3): 54-58.

Abstract(68) PDF(1)

Abstract:
The physical and chemical properties of industrial desulfurizing slag and slag-conglomerating agent were studied in the present work.It was found that the desulfurizing slag has an exceptionally high melting temperature and is distributed widespread on the hot metal surface in granular forms, and in...

Influence of Cooling Speed on Microstructure of Nb-V Microalloyed High Strength Steel

Chen Zhenye, Chen Zigang, Qin Xiuying

2010, 31(3): 59-62,74.

Abstract(51) PDF(1)

Abstract:
The experiments of a microalloyed high strength steel under heating, heat preservation and cooling at different speeds were conducted on the thermal-simulator of THERMECMASTOR-Z.And the microstructure was observed by Zeiss Axioplan2 universal metallographic optical microscope.The effects of cooling ...

Effect of Finishing Rolling Temperature on Microstructures and Mechanical Properties of Steel Strip for Engineering Mechanism

Zhang Kaihua, Ye Xiaoyu, Liu Yong, Yang Feng

2010, 31(3): 63-67.

Abstract(61) PDF(1)

Abstract:
Effect of finishing rolling temperature on microstructures and mechanical properties of steel strip for engineering mechanism was studied by means of optical microscopy, SEM, TEM, tensile property testing and impact toughness testing.The results show that tensile strength and yield strength of testi...

Experimental Study on Marginal Extension of Slab Corner Transverse Crack after Rolling

Liu Yang, Gu Linhao, Li Zhanjun, Wang Wenjun, Lv Yanchun, Wang Haibao, Jiang Zhongxing

2010, 31(3): 68-74.

Abstract(53) PDF(2)

Abstract:
Both laboratory and industrial experiments are carried out to test the marginal extension of slab corner transverse crack after rolling.It is found that with the increase of slab rolling thickness, the extension of corner crack along width direction of cast slab will develop.Comparatively the corner...

Technical Study of Hot-rolled Steel Strips for Automobile Beam

Jiang Yingyu

2010, 31(3): 75-79.

Abstract(42) PDF(1)

Abstract:
By designing reasonable chemical compositions and studying rolling technology, Bayi Iron & Steel Company have developed B510L and B550L hot-rolled steel strips for automobile beam bearing titanium and columbium.The tensile strength and weldability and cold deformation capability of rolled steel ...

Influence of New Zealand Sea Sand Proportioning Ratio on Metallurgical Properties of Vanadium-titanium-bearing Sinter of Cheng Steel

Lv Qing, Wang Wenshan, Jin Yuchen, Li Fumin, Gao Feng

2010, 31(3): 80-83,87.

Abstract(106) PDF(2)

Abstract:
The influences of New Zealand sea sand proportioning ratio on vanadium-titanium-bearing magnetite sintering process and metallurgical properties of sinter were determined.The results show that the vertical sintering speed and utilizing coefficient all increase with increasing sea sand ratio.The grai...

Practice of Reducing Inclusion in Q235 Slab for Chuanwei

Li Liang, He Shengping, Zhang Guoxing

2010, 31(3): 84-87.

Abstract(63) PDF(1)

Abstract:
Utilizing the methods of nitrogen oxygen analysis, sample-electrolyzing and spectrum analysis, cleanliness of casting slab of Q235 was surveyed under present process in Chuanwei, and the reason of low cleanliness of molten steel was analyzed, and the smelting process for Q235 was optimized.The resul...

Study on Cyclic Utilization of Converter Dust-removal Resource for Panzhihua Steel

Liu Shihong

2010, 31(3): 88-92.

Abstract(59) PDF(1)

Abstract:
Based on the characteristics of converter dust-removal ash in Panzhihua Steel, synthetic slag forming medium, final slag regulator, both of which are used in semi-steel converter steelmaking, and coolant used in vanadium extraction are developed.The effects of synthetic slag forming medium and final...

2010 Vol. 31, No. 3