钢铁钒钛

Technical Analysis on Smelting Reduction Ironmaking Process

Guo Peimin, Zhao Pei, Pang Jianming, Cao Chaozhen

2009, 30(3): 1-9.

Abstract(87) PDF(1)

Abstract:
Main smelting reduction ironmaking processes were analyzed.COREX process,a pre-reduction shaft furnace + gasifier pure oxygen-bowing process,has been put into industrial production.~250 kg coke and ~1 000 kg fuel are needed for producing 1 ton hot metal.FINEX process,a multi-step fluidized bed + hot...

The New Direction of Comprehensive Utilization of High Titanium-bearing Slag

Li Xinghua, Wang Xuesong, Liu Zhilu, Zhang Jiangping

2009, 30(3): 10-16.

Abstract(75) PDF(5)

Abstract:
According to mineral characteristics and phase structure of high titanium-bearing slag,research progress on comprehensive utilization of the high titanium-bearing slag is reviewed.Six principles for the use of high-value of high-titanium slag are proposed.It is pointed out that the high-temperature ...

Discussion on Scientific Sustainable Development of Vanadium and Titanium Industry in Panzhihua

Qiu Kehui, Gong Yingchun, Zhang Peicong, Zhou Shijie

2009, 30(3): 17-20.

Abstract(92) PDF(2)

Abstract:
The characteristics of vanadium-titanium magnetite resources and the existing problems during the rapid development of vanadium titanium industry were investigated in the paper.The large quantities of gangue,tail sand,iron and steel slag have been produced by mining,ore dressing and iron making proc...

Experimental Research on the Ion Exchange of Vanadiferous Leaching Solution and Residual Solution Recycling

Fu Zibi, Zhang Lin, Zhang Tao

2009, 30(3): 21-25.

Abstract(78) PDF(1)

Abstract:
Based on the clinker of calcifying roasting of stone coal in Hubei Province,the experimental processes involving the acid leaching of roasted clinker,leaching solution impurity removal,ion exchange,supplement to residual solution by sulfuric acid leaching,leaching solution impurity removal again,whi...

Simulation Study on Compositions and Process Optimization of V-microalloyed N80-class Seamless Tube

Xue Dongmei, Pan Tao, Zhao Sujuan, Wang Qingfeng, Yang Caifu, Zhang Yongquan

2009, 30(3): 26-32,37.

Abstract(74) PDF(1)

Abstract:
The synthesis effects of different nitrogen(N) contents and thermal processes on the microstructure and mechanical properties of 33Mn2V steel for N80-class seamless tube were investigated using Gleeble simulation technique.The results showed that when the N content in the steel increased from 0.005%...

Research on Mechanical Properties of Low-carbon Microalloyed Steel Added with Micron-grade ZrC Particles

Huang Zhongdong, Niu Jianping, Cai Qingkui, Huang Wenli

2009, 30(3): 33-37.

Abstract(66) PDF(2)

Abstract:
In vacuum conditions,micron-grade ZrC ceramic particles with 1.1% volume fraction were added into low-carbon microalloyed steel.The steel was hot-rolled in Φ450 mm experimental hot mill.The steel grains were refined to 5.5 μm after hot rolling.The tensile strength and yield strength of the hot rolle...

Change of the Non-metallic Inclusions during the Secondary Refining of Low Oxygen Alloyed Structural Steels

Zhao Kewen, Wang Xinhua, Li Haibo, Wang Ying, Chen Tianming

2009, 30(3): 38-43.

Abstract(91) PDF(1)

Abstract:
Slag of high basicity and high Al₂O₃ content was used in secondary refining of alloyed structural steels aiming at decreasing total oxygen contents(T[O]) of steel and forming relatively lower melting point inclusions to improve the anti-fatigue properties of the steels.It was found that T[O] at the ...

Research on the Non-metallic Inclusion in X70 Pipeline Cast Slab

Wu Yuchen, Li Junguo, Yan Xiaolin, Li Shouzhang, Ceng Yanan

2009, 30(3): 44-49.

Abstract(60) PDF(1)

Abstract:
Utilizing the methods of sample-electrolysing,metallographic observation,SEM and EPMA,the quantity,dimension,morphologies and composition of non-metallic inclusions in X70 pipeline steel cast slab were investigated.It was suggested that there were larger amount of inclusions with larger diameter in ...

Technology of High Efficient Slab Caster at PISCO

Chen Yong, Xiao Mingfu, Wu Guorong, Yang Subo, Ceng Jianhua

2009, 30(3): 50-55.

Abstract(65) PDF(1)

Abstract:
Technologies of high efficient slab caster and its application effect at PISCO(Panzhihua Iron & Steel Co.) were presented.The casting speed was increased to the range between 1.30 m/min and 1.80 m/min owing to developing reasonable mold flux,primary cooling scheme and molten steel temperature co...

Influence of Basicity on Microstructure of Vanadium-titanium Magnetite Sinter

Han Xiuli, Wang Haifeng, Liu Lina, Yao Mingyan, Wang Yanhong

2009, 30(3): 56-60.

Abstract(89) PDF(1)

Abstract:
The influences of basicity on microstructure of vanadium-titanium magnetite sinter were studied by optical microscopy.The results showed that when basicity is increased from 2.1 to 2.5,the content of titanomagnetite,calcium ferrite and dicalcium silicate increase,but the content of titanohematite an...

Effect of Different Deoxidizer on the Cleanliness of Gas Bottle Steels

Yang Shufeng, Li Jingshe, Zhang Lifeng, Tang Haiyan, Gao Jinguo, Jiang Guilian

2009, 30(3): 61-64.

Abstract(67) PDF(1)

Abstract:
The current study investigated the effect of two different deoxidizers on the composition and number of micro-inclusions and macro-inclusions,and the total oxygen content(T[O]) in the gas bottle steels.Using Si-Ca-Ba-Mg-Sr alloy as a deoxidizer decreased the number of micro-inclusions and macro-incl...

Numerical Simulation of Comprehensive Metallurgical Behavior of Liquid Steel in Slab Mold

Xiao Niangen, Ni Shengqi, Fu Huijie

2009, 30(3): 65-69,75.

Abstract(67) PDF(1)

Abstract:
Numerical simulation of comprehensive metallurgical behavior of liquid steel in slab mold is described.It was found that the flow of liquid steel was decided by the shape and intensity of the jet of SEN.Under the condition of working tip structure of SEN used,the low pressure back flow zone near the...

Thermal-mechanical Coupled Analysis for Copper-steel Cooling Stave

Liu Zengxun, Chen Xiaoming, Yan Lifeng, Niu Jianping

2009, 30(3): 70-75.

Abstract(83) PDF(3)

Abstract:
The heat transfer and thermal stress model for copper-steel colling stave is established by ANSYS.The temperature and thermal stress distribution of the stave is analyzed when the slag skull is steady and after the slag skull drops off.The result shows that gas temperature is the main factor that af...

Finite Element Analysis of Tracked Steel’s Rolling Process

Tao Gongming

2009, 30(3): 76-79.

Abstract(58) PDF(1)

Abstract:
The tracked steel's section is very complex.The phenomena of torsion and warpage often happen,which affects the tracked steel's rolling process.The finite element model of tracked steel's rolling process in the knifing pass was established.The influences of the pass parameters upon the rolled piece'...

Optimization of Slab’s Reheating Process

Liu Yong, Wen Yacheng, Li Weiping, She Guangfu, Li Junhong, Lin Xia

2009, 30(3): 80-83.

Abstract(71) PDF(4)

Abstract:
A mathematical model for slabs heated in a 3-zone walking beam type of reheating furnace was established.The finite difference method was used for the discretion of the mathematical model and a computational software was developed.The influence of the slab's width on the change of the slab's tempera...

Research on Quality Control of 45^# Steel Billet

Yu Jie, Tang Ping, Yang Hao, Wen Guanghua, Hu Daofeng, Zhang Yue, Ma Jun

2009, 30(3): 84-88.

Abstract(59) PDF(2)

Abstract:
According to the problem of internal cracks occurred on continuous casting billet at Nanjing Iron & Steel Co.,Ltd.,the species,quantity and size of inclusions on the different position of billet cross section were statistically analyzed.The results showed that: main causes of internal cracks are...

Discussing on Increasing the Utilization Rate of Titanium in Panzhihua Mineral Resources

Gou Shuyun

2009, 30(3): 89-92.

Abstract(65) PDF(3)

Abstract:
According to the Panzhihua municipality's "Turning Panzhihua into China's Vanadium-titanium Capital,Establishing Distinctive Economy System"developing strategy,the utilization state of Ti in Panzhihua vanadium-bearing titaniferous magnetite is presented.Since the utilization ratie of Ti resource is ...

2009 Vol. 30, No. 3