钢铁钒钛

APPLIJCATION OF COMPUTER-AIDED PASS DESIGN TO PANGANG HIGH SPEED WIRE ROD MILL

Gu Jiecai, Guo Yan, Huang Qiyi, Cui Botao

1995, 16(4): 1-7.

Abstract(64) PDF(0)

Abstract:
The pass system design of the No.10 finishing stand for exit wire rod Ø 6.5 mm at the Pangang's high speed wire rod rolling mill is made using the computer aided pass design software.Good service resuits are obtained through production practice. Successful attempts have been made to optimize performance and increase productivity of the first home-manufactured non-twist mill.Remarkable economic benefits have been achieved at Panzhihua lron and Steel Co.

APPLICATION OF MICRO VANADIUM-TITANIUMH HIGH EARTHQUAKE RESITANT CONSTRUCTIONAL STRUCTURAL STEEL IN ANTI-SEISMIC DESIGN

Gong Shihong, Sheng Guangmin

1995, 16(4): 8-13,7.

Abstract(90) PDF(0)

Abstract:
The anti-seismic properties and indexs are proposed against failures of constructional structural steels in case of intense earthquake. The anti-seismic properties of some common structural steels are studied systematically. Prospect of application of the high earthquake resistant constructional steel containing micro vanadium-titanium in anti-seismic design is disscused.

SINTERING TEST ON IMPROVING SiO₂/TiO₂ AND ADDING AUXiLIARY CHARGES DURING SINTERING SINTERING PRODUCTION

Yu Wenhua, Shu Wendong, Li Jianming, Wang Minjie, Yuan Tianyu

1995, 16(4): 14-19.

Abstract(45) PDF(0)

Abstract:
A laboratory test was conducted to add small amount of fluorite,boryte,iron-manganese ore and boron mud to vanadium titanomagnetite concentrate sinter mix and to investigate the effect of SiO₂/TiO₂ variation on the sintering process and sinter metallurgical properties. The test shows that addition of adequate fluorite and iron-manganese ore to the mix charge can notably increase productivity. Fluorite can improve low temperature breakdown property of sinter.

APPLICATION OF COMBINED BLOWING TI PANGANG ARC-BOTTOMED CONVERTERS

Xu Lizhi, Wang Tao, Chen Yu, Xu Weihua, Liu Nanping

1995, 16(4): 20-25.

Abstract(34) PDF(0)

Abstract:
To solve the problem in combined blowing associated with the arc-bottomed converter changed from the flat-bottorned converter in the V-extracting steelmaking plant,the laying way of tuyeres,bottom blowing system and blowing model have been improved.The combined blowing process has been incorporated to all the three 120t-convertcrs,obtaining better metallurgical effects.

EFFECTS OF Ti ON STEEL──AN INVkSTION ON NON-VACUUM SMELTING OF IF STEEL

Zhang Chunlan, Qiu Xiaogang, Li Xingrong

1995, 16(4): 26-31.

Abstract(63) PDF(1)

Abstract:
A small amount of alloying elements and adequate titanium were added to the Armcoiron to investigate the smelting methods of IF steel under non-vacuum conditions and effects of titanium on the properties of IF steel. The trial steel smelted in the induction furnace, hot and cold rolled, and subject to aging analysis, test in $\bar{r}, n$ and texture, was proved to comform with the properties of IF steel. Test results suggest that the trial steel smelted by the induction furnace and containing 0.03%C and 0.189% Ti exhibits no aging behavior, enjoys higher $\bar{r}$ and $n$ value, better deep-drawing property than 08Al steel, and shows favorable texture. It is also indicated that real titanium should be slightly over 0.02%.

STUDY ON VANADIUM RECOVERY FROM HOT MFTAL CONTAINING VANADIUM WiTH SODA AND MAGNFSIA

Sun Zhaohui

1995, 16(4): 32-35.

Abstract(47) PDF(0)

Abstract:
Vanadium recovery from hot metal containing vanadium with soda and magnesia by oxygen top blowing is discussed.The effect of the amount of magncsia added,MgO addition time and the Na₂O, CaO,MgO content in the slag is examined.The expcrirnental resuIts show that when MgO/Na₂CO₃ mass radio is about 1.3,the rate of vanadium oxidation is 83.23%,the extent of desufurization,dephosporization and decarbonization is 77.49%,83.19%,12.53%respectively,the rate of vanadium directly leachcd from slag is 93.89%,and 20%saving of soda is achived.

EXPEKIMENTAL STUDY ON SMELTING FERROMOLYBDENUM BY METAL THERMIC PKOCESS

Yang Yangjun, Sun Zhaohui

1995, 16(4): 36-39.

Abstract(61) PDF(1)

Abstract:
In this paper,the relation between the recovery efficiency of molybdenum and all kinds of effecting factors was obtained by experiment.The ferromolybdenum（FeMo70）produced is in conformity to GB3649-87 standard.The recovery efficiency of molybdenum is 98.65%in stable experiment.

DEVELOPMENT OF THERMAL INSULATION COVERING AGENT FOR INGOT CASTING AT PANGANG

Liu Jinwu, Zhang Guocai, Liu Xuegang, Sun Wenming

1995, 16(4): 40-43,49.

Abstract(59) PDF(0)

Abstract:
In order to solve the problem of expensive aluminium-type thermite currently used for ingot casting at Pangang's Steelmaking Plant, a new and cheap substitutional thermal insulation agent is developed. The heat transfer-process of ingot head, mechanism of shrinkage-proof action and property of shrinkage-proof agent are disscussed. A few years' production practice show that the covering agent performance is equal to that of aluminium-type thermite, and the quality of steel comforms to current standards.

TECHNOLOOGICAL STUDY ON PRODUCTION OF SPRING STEEL BY CONVERTER

Dong Yajun, Deng Cheng, Wang Yicheng

1995, 16(4): 44-49.

Abstract(38) PDF(0)

Abstract:
This test has been conducted for the purpose of development of production technology of 60Si2Mn spring steel by converter。The rational deoxidation and alloying process are determined to obtain clean steel and keep total non-metallic inclusions≤3.5 grade,The fatigue resistant property of the trial automobile sheet spring is excellent.The combined properties of the steel are equal to those of the electric furnace steel.

THE MANUFACTURING TECHNOLOGY OF PREFUSED GRANULAR MOLD POWER FOR CONTINUOUS CASTING

Zhao KeWen

1995, 16(4): 50-54,62.

Abstract(56) PDF(0)

Abstract:
The features manufacturing technologies and applications of the prefused granular mold powder are concerned in this article. For the purpose of developing granular mold powder used in high speed casting process, some fundamental research items necessary to be conducted are put forward while discussing the reasons why granular mold powder has not yet been widely used in china.

DEVELOPMENT OF THE DOMESTIC AND INTERNATIONAL PRODUCTION OF VANADIUM TRIOXIDE

Hu KeJun

1995, 16(4): 55-62.

Abstract(61) PDF(0)

Abstract:
The physical chemistry property and the application of vanadium trioxide,the technological process,the various materials and the reductants used for production of vanadium trioxide both at home and abroad are introduced. Some views on the current situation of scientific research and production of vanadium trioxide are presented.

DETERMINATION OF H₂IN METAL CHROME BY ITHAC─2002

Yi GuiHua

1995, 16(4): 63-65.

Abstract(45) PDF(1)

Abstract:
In the experiment,the ITHAC-2002 was used to determine H₂ in metal chrome,Options of analysis current,analysis time,degassing current,degassing time and gradient time were made one by one. The standard deviation was 0.46% and variation factor 3.36%.

1995 Vol. 16, No. 4