钢铁钒钛

Study on High Temperature Smelting Hydrogen Metallurgy

Cao Chaozhen, Guo Peimin, Zhao Pei, Pang Jianming

2009, 30(1): 1-6.

Abstract(68) PDF(1)

Abstract:
It was studied by thermodynamics calculation in different patterns that the feasibility of decreasing the heat burden of melting furnace by blowing hydrogen to replace C as reducing agent in this paper.The results showed that the heat burden of melting furnace can't be reduced by blowing hydrogen fo...

Recovering Vanadium from High Carbon Stone Coal by Means of Direct Acid Leaching

Wei Chang, Wu Huiling, Fan Gang, Li Cunxiong, Li Minting, Liang Yanhui

2009, 30(1): 7-11.

Abstract(71) PDF(1)

Abstract:
Based on high carbon stone coal of Guangwang of Sichuan,on the basis of chemical analysis, petrographic analysis and electron probes, recovering vanadium experiment from high carbon stone coal by aid leaching was carried. The result show that the optimum vanadium extraction rate is respectively 54.7...

Study on Solubility Properties of Fluidizing Chlorination Slag for Titanium-rich Material

Xu Qingxin, Lei Ting, Zou Ping, Wang Xiangding

2009, 30(1): 12-15.

Abstract(76) PDF(4)

Abstract:
In allusion to the process of titanium white powder produced by chloride giving rise to a large number of fluidizing chlorination slag,which will cause the serious environmental problems if it was directly stacked. We will introduce a new kind of water-soluble way,by which chloride is dissolved in w...

Variation Characteristics of Microstructures in Non-quenched and Tempered Steel with Vanadium and Nitrogen

Liu Hongyu, Liu Jianhua, Huang Gang, Chen Xiaolong, Yu Chenglu, Ke Xiaotao, Li Haibo

2009, 30(1): 16-22.

Abstract(66) PDF(1)

Abstract:
The microstructures of non-quenched and tempered steel with different vanadium and nitrogen contents, cooled to room temperature at different cooling rates after being deformed in austenite,were observed and analyzed using optical microscope,scanning and transmission electron microscope.The results ...

Influence of Titanium Content on Microstructure and Mechanical Properties of Hot-roHed Strips

Huo Xiangdong, Mao Xinping, Chen Kangmin, Lin Zhenyuan

2009, 30(1): 23-28.

Abstract(75) PDF(2)

Abstract:
Based on chemical composition of common container strips,titanium micro-alloyed high strength steel was developed by CSP process.Many experimental methods,such as SEM,TEM and chemical phase analysis,were used to study the effect of titanium content on microstructure and mechanical properties of hotr...

Dissolution Behavior of Nb,Ti Carbonitride Precipitates in Low Carbon Microalloyed Steel

Wu Xinlang, Zhao Zhengzhi, Yu Wei, LI Bin, Wang Lun

2009, 30(1): 29-33.

Abstract(69) PDF(1)

Abstract:
Dissolution behavior of Nb,Ti carbonitride precipitates in low carbon microalloyed steel was studied by use of TEM and EDX.It is found that with the heating temperature rising and hold time increasing,the second-phase particles dissolve.The dimension of the second-phase particles becomes finer and t...

Study on Microstructures and Properties of Ultra Low-carbon Nb+Ti-IF Steel

Li Yaobing, Zhou Huan, Su Lan, Zhao Aimin

2009, 30(1): 34-40.

Abstract(69) PDF(1)

Abstract:
Under the laboratory conditions,the crystallizing regulation and the effect of annealing process on the properties and structure of Nb+Ti-IF steel were studied,the experiment showed that:the starting crystallization temperature of IF steel is 680℃, under 800℃ constant temperature conditions,the time...

Development and Application of Ti Micro-alloying High Strength Weathering Steels in Zhujiang Steel

Lin Zhenyuan, Mao Xinping, Yu Chibin, Zhao Gang

2009, 30(1): 41-45.

Abstract(79) PDF(1)

Abstract:
In thin slab continuous casting and continuous rolling process,by researching the Ti micro-alloying technology,the problem of mechanical performance undulation with Ti micro-alloying was solved effectively, and high strength weathering steels were developed,the yield strength is 450~700 MPa.The micr...

Study on the Residence Time Distribution Characteristics of T Type Eight-strand Continuous Casting Tundish

Chen Yuanqing, Wang Xuebing, Chou Shengtao, Peng Shiheng

2009, 30(1): 46-50.

Abstract(65) PDF(1)

Abstract:
Based on the principle of similarity,1:2 physical model of eight-strand continuous casting tundish is built.Water modeling experiments are carried out to measure the residence time distribution of the fluid in the tundish.A method for analyzing the RTD curve of multi-strand tundish is presented by d...

Study on the Metallurgical Effects of Electric Pulse Acted on Molten Steel in Tundish

Gu Wu'an

2009, 30(1): 51-54.

Abstract(68) PDF(2)

Abstract:
The metallurgical effects of electric pulse acted on molten steel in the tundish of Panzhihua Steel were studied,including the element segregation improvement for casting slabs and refining crystal structure. The results show that,the equiaxed crystal ratio could be 53% to 91%,average was 66%, which...

Water Model of the Surface Wave and Fluid Flow in Slab Continuous Casting Mold

Wang Yongsheng, Hou Zewang, Wang Xinhua, Wang Wanjun

2009, 30(1): 55-59.

Abstract(79) PDF(1)

Abstract:
According to one kind of the molds for slab caster in china,a water model in the ratio of 1 to 1 has been established in order to study the effect of the level of steel in tundish on flow field and surface wave of mold.The results show that the flow field and surface wave of molten steel in the mold...

Measurement of the Solidified Shell Thickness in the Secondary Cooling Zone of Continuous Casting of Bloom

Chen Yong, Wu Guorong, Sun Yanhui

2009, 30(1): 60-63.

Abstract(64) PDF(1)

Abstract:
The solidified shell thickness of bloom near the final stage of solidification in the secondary cooling zone on Pangang No.2 continuous bloom caster was measured,by use of the pin-shooting method.On the basis, the relationship between the solidified shell thickness,the final stage of solidification ...

Impact on the Instability of Carbon Content of IF Steel

Chen Liang, Chen Tianming, Zhang Guifang, Ceng Jianhua, Shi Zhe, Gu Longjian

2009, 30(1): 68-73.

Abstract(55) PDF(1)

Abstract:
In this paper,it aim at Panzhihua Steel RH refining process in the high carbon content and instability in IF steel production.its production process tracking survey shows that the impact of the carbon content of the main factors are RH initial steel [C] and a_[o],vacuum degree,decarburization time,ca...

Discussion on Serialization of Mold Fluxes for Continuous Casting Billets in Shuicheng Steel

He Shengping, Wang Lijuan, Wang Qian, Zhang Jiaxiang, Zhang Dongsheng

2009, 30(1): 64-67.

Abstract(69) PDF(1)

Abstract:
Mold fluxes play an important role in maintaining the continuous casting process and improving surface quality of casting strands.Due to the difference of steel grades and continuous casting process,appropriate properties of mold fluxes are not the sarne.Aiming at the process of continuous casting b...

2009 Vol. 30, No. 1