钢铁钒钛

Metallurgical Benefits of Vanadium Microalloying in Producing High Strength Seismic Grade Rebar

David Milbourn, Li Yu

2012, 33(2): 1-9.

Abstract(102) PDF(13)

Abstract:
It is essential to select appropriate materials for reinforcing bars（rebars） in order to assure adequate seismic performance,and there are several international standards defining specifications.The critical properties of seismic resistant rebars have been identified and the pros and cons of the pop...

Study on the Preparation Technology of High-density APV

He Wenyi, Wang Xiaojiang, Peng Yi, Yin Danfeng

2012, 33(2): 10-14.

Abstract(79) PDF(2)

Abstract:
A new process to prepare high-density APV is introduced and the effects of TV concentration,pH value,stirring rate,temperature before adding reagent and acid,ammonium adding coefficient and seed crystal on bulk density and precipitation ratio of APV are investigated.The results show that following a...

Experiment on Preoxidation and Hydrogen Reduction of Ilmenite in the Fluidized Bed

Tan Liang, Gu Wu'an, Yuan Xizhi

2012, 33(2): 15-19.

Abstract(81) PDF(1)

Abstract:
Using ilmenite as raw materials to produce titanium slag by hydrogen reduction in the fluidized bed can not only expand sources of raw materials and lower energy consumption,but also realize cleaner production.On the basis of cold test,preoxidation and hydrogen reduction of ilmenite in the fluidized...

Influence of Magnesium Addition on Preparation of Nano-TiC Powder

Zheng Zhuo, Zhou Dali, Yu Chong, Hu Chi, Zhao Xin

2012, 33(2): 20-25.

Abstract(55) PDF(1)

Abstract:
In the experiment,TiC precursor was produced by sol-gel process using Ti（C₄H₉O）₄ and phenolic resin as titanium source and carbon source respectively.Then the so prepared TiC precursor was mixed with the catalyst of Mg powder to produce nano-TiC powder by carbothermic reduction process.The phase and...

Preparation of Crude Vanadium Alloy by Aluminothermic Process

DENG Bin

2012, 33(2): 26-29.

Abstract(60) PDF(2)

Abstract:
Vanadium pentoxide and aluminum powder were used as raw materials to prepare crude vanadium alloy for electrorefining by aluminothermic process in the shaft furnace.The influences of unit thermal value of burden and aluminum coefficient on V recovery and Al content in the alloy were studied.Stabilit...

A New Low-temperature Reduction Technology for Vanadium-bearing Titaniferous Magnetite

Pang Jianming, Guo Peimin, Zhao Pei

2012, 33(2): 30-33.

Abstract(56) PDF(3)

Abstract:
A new low-temperature reduction technology for vanadium-bearing titaniferous magnetite was developed based on extensive investigation of its special properties.The new technology is efficient in utilization of resources and energy,as it lowers the reaction temperature and eliminates the subsequent e...

Simulation Experiment on Direct Reduction of Oxidized Pellets of Vanadium and Titanium-bearing Iron Concentrates by Gas-based Shaft Furnace

Wang Zhaocai, Chen Shuangyin, Chu Mansheng, Han Ziwen, Xue Xiangxin

2012, 33(2): 34-39.

Abstract(54) PDF(1)

Abstract:
Vanadium-bearing titaniferous magnetite resources are abundant in China,but most of them are difficult to be utilized efficiently because of current technical problems with industrial practice,so further efforts should be made to innovate existing technologies.The process of direct reduction by gas-...

Technical Analysis on Oxygen Blast Furnace Ironmaking Process

Gao Jianjun, Qi Yuanhong, Zhou Yusheng, Yan Dingliu

2012, 33(2): 40-45.

Abstract(62) PDF(1)

Abstract:
A numerical simulation of the oxygen blast furnace is established in this paper.The results show that fuel consumption can be reduced by 5% when top gas of the oxygen blast furnace is recycled and CO₂ emissions can be reduced by more than 56% when CO₂ in the top gas is stored and utilized.Industrial...

Study on Alloying by Nitrogen Blowing During AISI410 Stainless Steel Refining with LF

Zhou Shucai, Yang Jie, Yang Yongjun

2012, 33(2): 46-49,76.

Abstract(75) PDF(1)

Abstract:
The effects of nitrogen blowing time,nitrogen flow rate and liquid steel temperature under normal atmospheric condition on nitrogen content were tested and studied during AISI410 stainless steel refining with the 40 t LF and the control model of nitrogen alloying during LF refining was established.T...

Research on Submerged Entry Nozzles Clogging During Non-oriented Silicon Steel Casting by CSP Process

Li Wenguang, Sun Yanhui, Wang Xiaosong, Qiao Zheng, Xiong Huihui, Cai Kaike

2012, 33(2): 50-55.

Abstract(60) PDF(1)

Abstract:
Clogging behavior of submerged entry nozzles during non-oriented silicon steel（with aluminum content of 0.3%~0.4%）casting by BOF-LF-RH-CSP process in a domestic steel mill was investigated.By way of systematical sampling,optical microscope observation,SEM analysis and mineralogical phase analysis,th...

Effect of M-EMS on Carbon Segregation of Gear Steel Round Bar Rolled from Rectangular Bloom

Xu Ruijun, Yan Huicheng, Wu Qingming, Xu Weiyang, Cao Zhigang, Yang Genchao, Liu Jian, Liu Yonglong, Qiu Shengtao

2012, 33(2): 56-61.

Abstract(62) PDF(1)

Abstract:
Effect of different M-EMS strength on carbon segregation of gear steel round bar rolled from rectangular bloom is investigated by analyzing the carbon distribution and etched macro-structure.The results show that the CET rectangle is enlarged and equiaxed crystal rate rises with M-EMS,but a band of ...

Experimental Research on Use of V-bearing Titaniferous Magnetite for Sintering in Desheng Chuangang Steel

Du Changkun, Mai Jichang, Luo Qingming, Yuan Xiaoli, Wan Xin, Liu Hao

2012, 33(2): 62-66.

Abstract(65) PDF(1)

Abstract:
In view that high proportion of V-bearing titaniferous magnetite is used at the sinter plant of Sichuan Desheng Iron and Steel Co.,effects of proportioning of V-bearing titaniferous magnetite and basicity on sinter performance were investigated in the lab.The results show that in order to meet the r...

Design and Application of Blast Furnace Casthouse Refractory for Smelting Vanadium-bearing Titaniferous Magnetite

YANG Qiang

2012, 33(2): 67-70.

Abstract(65) PDF(2)

Abstract:
Properties of blast furnace slag from vanadium-bearing titaniferous magnetite smelting is investigated.The damage mechanism of the dry-out rammed mixture for iron runner is analyzed and influence of the sintering and anti-adhesion compound additive on the performance of the rammed mixture is probed....

Effect of Heating Temperature on Precipitation and Property of Ti-Nb Composite Microalloyed High-strength Steel

Gan Xiaolong, Yue Jiangbo, Zhang Qing

2012, 33(2): 71-76.

Abstract(49) PDF(1)

Abstract:
A low-carbon high-strength microalloyed steel was smelted in laboratory.Rolling,redissolving and tensile tests were performed.In addition,microstructure of the rolled steels was observed and the morphology,type and size of precipitates at different reheating temperature were analyzed.The results sho...

Analysis on Mechanical Property and Microstructure of Low Carbon Bainite Steel Q550 for Engineering Machinery Use

Liu Nianfu

2012, 33(2): 77-81.

Abstract(48) PDF(1)

Abstract:
The production of the high strength steel plate Q550 with thickness of 30 mm for engineering machinery use in Shaogang is introduced.Using low carbon and microalloyed elements such as Nb,V,Ti,Mo etc.plus TMCP and off-line tempering process,the plate was produced with mechanical properties satisfying...

High-temperature Microstructure and Mechanical Performance of As-cast 2205 Duplex Stainless Steel

Li Yan, Du Zhongze, Hu Kuntai

2012, 33(2): 82-86.

Abstract(66) PDF(2)

Abstract:
High-temperature short-time tensile test of as-cast 2205 duplex stainless steel was performed and the variation of tensile strength and percentage reduction in area of the specimen at different temperatures was analyzed.The high-temperature microstructures and fracture morphologies were observed at ...

Steel Edge Cracking Analysis and Improvement Measures

Song Jinying, Dong Shuangpeng, Chen Yexiong, Zhang Bingqing, Chen Liansheng, Tian Yaqiang

2012, 33(2): 87-92.

Abstract(95) PDF(2)

Abstract:
In order to study the surface quality of the edge-cracking steel sheet and find out the root causes of defects,microscope,scanning electron microscopy,energy dispersive spectroscopy and other related test equipments were employed.The results showed that there were four fundamental casues of steel ed...

Analysis on Narrow Side Bulging of Slab and Improvement Measures

Wang Wenxue, Liu Cailing, Yang Chaowu, Zeng Jing, He Yuming, Li Deqing, Wang Haibin

2012, 33(2): 93-95.

Abstract(68) PDF(4)

Abstract:
Bulging of 7~8 mm appeared at the narrow side during casting 300 mm thick 16Mn slabs with 3^# caster of Chongqing Iron and steel Company.Problems during casting were identified,such as weak cooling intensity of mold especially at narrow side,too small taper at the narrow side and taper change of narr...

2012, 33(2): 96-98.

Abstract(52) PDF(1)

Abstract:

2012 Vol. 33, No. 2