钢铁钒钛

AN EXPERIMENTAL STUDY ON HOT METAL DEFORMATION RESISTANCE OF 09CuPRE etc. GRADES PRODUCED AT PANZHIHUA IRON AND STEEL Co.

Guo Yan, Guo Hua, Gu Jiecai

1996, 17(4): 1-9.

Abstract(19) PDF(0)

Abstract:
An experiment was conducted for the hot metal deformation resistance of 09cuPRE,16Mn,Q235 grades using the thermal simulation testing machine.According to the effect of deformation temperature,velocity and degree on the deformation resistance,the computation model of deformation resistance was selected.The model parameters were determined through multi-element non-linear regression data processing,resulting in a model with higher fitting accuracy.Charts and tables worked out in accordance with the model can be directly referred to.

EXPERIMENTAL STUDY OF FOAMING PHENOMENON OF TITANIFEROUS SLAG DURING V-Ti-BEARING MAGNETITE SMELTING

Jia Bi, Qi Baoming

1996, 17(4): 10-14,18.

Abstract(32) PDF(0)

Abstract:
The experimental study of foaming phenomenon of titaniferous slag during V-Ti-bearing magnetite smelting was conducted using different additions.The results show that a certain amount of additions can restrain TiO₂ reduction,decrease the slag viscosity and improve the foaming phenomenon of the slag. Therefore,the foaming height of the experimental slag is similar to that of TiO₂ containing blast furnace slag from Panzhihua Iron and Steel Co..

ROLE OF Ti₂O IN MOLD POWDER

Li Guijun, Du Dexin, Chi Jinghao

1996, 17(4): 15-18.

Abstract(27) PDF(0)

Abstract:
Li₂O was added to two base powder with different glassy properties so as to study the effect of Li₂O on the viscosity, melting temperature and glassy property of mold powder.The mechanism how the glassy property of mold powder is improved by Li₂O was investigated,and an approach was proposed to choose an substitute for Li₂O used in the mold powder for high speed continuous casting.

STUDY OF WELDABILITY OF HOME-MADE SS41 STEEL

Li Dadong, Ling Ping, Song Liqiu

1996, 17(4): 19-23,27.

Abstract(20) PDF(0)

Abstract:
The weldability of the home-made plain carbon structural steel SS41 (non-welding steel) was studied.A comparative test was made for the Q235 steel with the same composition and plate thickness.It is shown that the weld joint of SS41 steel welded by the low hydrogen electrode E4315 (by hand electric arc welding) and H08A welding wire added with HJ431 welding flux (by-submerged arc welding) has mechanical property corresponding to that of Q235 steel.The SS41 steel can be substituted for Q235 steel,is used for important welding structures.

STUDY OF MECHANICAL PROPERTY FLUCTUATION OF P370L AUTOMOBILE FRAME PLATE COIL

Song Liqiu, Zhang Kajian, Wang Yicheng

1996, 17(4): 24-27.

Abstract(21) PDF(0)

Abstract:
The fluctuation of mechanical property such as tensile strength,yield strength,elongation percentage and reduction of area at the head,middle and tail over the length of the P370L automobile frame plate coil is investigated.The causes for such fluctuation is analysized.

ANALYSIS ON IMPORTANT TECHNICAL ISSUES IN STEELMAKING PROCESS AT PANGANG

Yang Subo, Li Yangzhou, Du Dexin, Ge Wensun, Wang Jian, Ji Kebin, Song Guoju

1996, 17(4): 28-32.

Abstract(29) PDF(0)

Abstract:
Based on the experimental results and calculations,the technical issues in steelmaking process at Pangang,such as hot metal pretreatment,vanadium recovery from hot metal,ladle refining and continuous casting are dissected.The technical measures are proposed so as to improve steelmaking process.

WAY TO IMPROVE STEELMAKING PROCESS AT PANZHIHUA IRON AND STEEL Co.

Li Yangzhou, Chen Yu, Yang Subo, Du Dexin, Ji Kebin

1996, 17(4): 33-37,42.

Abstract(42) PDF(5)

Abstract:
The problem present in BOF steelmaking process at Pangang is analysed and the ways to improve technique are discussed.The importance should be attached to stable composition of raw material,molten steel temperature and optimization of steelmaking process.

RECOVERY OF METALLIC IRON TiO₂ BEARING BF SLAG AT PANZHIHUA IRON AND STEEL Co.

Zhang WenXin

1996, 17(4): 38-42.

Abstract(20) PDF(0)

Abstract:
The iron carried-over by the TiO₂ bearing BF slag at Panzhihua Iron and Steel Co.,its characteristics, forms and causes are briefly described.The possiblity to recover iron from BF slag is analysized.Ways to recover liquid iron from the roughing slag and solid iron from the dry slag in the main runner are investigated.

PROBLEMS FACED WITH THE COKING COAL USED FOR PANZHIHUA IRON AND STEEL Co.AND THE CORRESPONDING SOLUTIONS

Yu Wenhua, Shu Wendong, Zhou Hongming, Su Qingyu

1996, 17(4): 43-47.

Abstract(25) PDF(0)

Abstract:
A complete and detailed investigation was made on the coal resources,types and its processing industry in Yunnan,Sichuan and Guizhou Province,particularly in the Pan-Xi Region,and massive data were obtained.According to the special requirements for coke quality for smelting vanadium-bearing titaniferous magnetite in the blast furnace in Panzhihua Iron and Steel Co.and the existing problems faced with the coking coal in the Coal Chemical Company,solutions were proposed accordingly.

TECHNOLOGY OF SHEET SHAPE CONTROL OF HOT ROLLED STRIP STEEL

Li Wei

1996, 17(4): 48-57,69.

Abstract(36) PDF(1)

Abstract:
The methods of world-wide sheet shape control of hot rolled strip steel,i.e.hydraulic roll bending,roll cross sliding four-high mills (HCW,CVC,etc.) and PC+ORG mills and the technologies of sheet shape on-line determination and on-line control are reviewed.An investigation is conducted on the inherent imperfection of traditional four-high hot rolling mills.The optimum plan is proposed to reform traditional rolling mills.The suggestions are put forward for Panzhihua I.& S.Co.to adopt this technology.

A REVIEW OF EDDY CURRENT TESTING OF RAILS IN FOREIGN COUNTRIES

Ding Qin

1996, 17(4): 58-62.

Abstract(30) PDF(0)

Abstract:
The principle of eddy current testing of rails and the methods for using eddy current to inspect surface defects of rails are described.Additionally,several eddy current testing systems developed by foreign rail producers are introduced.

LASER WELDING OF AUTOMOBILE TAILORED BLANK

Liang Xueping, Su Shihuai

1996, 17(4): 63-69.

Abstract(17) PDF(0)

Abstract:
The laser welding principle and process for tailored blank and performance of weld joint are presented in this paper.Additionally, up-to-date technology of laser welding of sheet used by major automobile manufacturers and steelmakers in the world is briefly reviewed.

A BRIEF INTRODUCTION TO THE MATHEMATICAL MODEL OF LAMINAR FLOW COOLING SYSTEM USED AT THE HOT STRIP MILL OF PANGANG

Zhang ZhongPing

1996, 17(4): 70-74.

Abstract(32) PDF(0)

Abstract:
The laminar flow cooling system and its mathematical model used at the Hot Strip Mill of Panzhihua Iron and Steel Co.is briefly introduced.The model has found practical use and is in normal operation at the Hot Strip Mill.

1996 Vol. 17, No. 4