钢铁钒钛

MECHANISM OF TiC FORMATION IN SMELTING REDUCTION PROCESS OF SYSTEM CaO-SiO₂-Al₂O₃-MgO-TiO₂-FeO

Feng Keqin, Zhang Binghuai

1997, 18(2): 1-6.

Abstract(17) PDF(0)

Abstract:
In laboratory conditions,experiments have been conducted to test tLe effects of both the constitution of CaO-SiO₂-Al₂O₃-MgO-TiO₂-FeO slag and the different methods of carbon supply on TiC formation in smelting reduction process,for which the thermodynarnical analysis has been done as well. The study suggests that the mechanism of TiC formation bears a close relation to the technological conditions.

THERMODYNAMIC ANALYSIS OF MANGANESE ORE DIRECT ALLOYING FOR INCREASING [Mn] CONTENT IN MOLTEN STEEL AT END POINT OF BLOWING IN CONVERTER

Wen Yongcai, Du Dexin, Wang Tao, Wang Jian

1997, 18(2): 7-10,25.

Abstract(16) PDF(0)

Abstract:
In this paper,the possibility of steel composition readjustment by manganese ore direct alloying in converter steelmaking process is considered by thermodynamic diagram and isothermal equation. The effect of(FeO) content in slag and slag volume on direct alloying process is discussed.

DEVELOPMENT AND APPLICATION OF HOLLOW GRANULATED CONTINUOUS CASTING POWDER

Chen Tianming, Ceng Jianhua, Sun Wenming, Li Maolin, Huang Jihong

1997, 18(2): 11-17.

Abstract(32) PDF(0)

Abstract:
Chemical composition and physical properties of PXB-1 hollow granulated continuous casting powder are designed by analysis of BXAT casting powder of Italy in detail and by means of a series of laboratory research,also with reference to the continuous caster conditions and process parameters of Panzhihua Iorn & Steel Company(PZHISC).The application experiment was carried out in PZHISC continuous caster. The results show that the mold powder is available to PZHISC continuous caster conditions,and better than other casting powder at home.

FRACTURE ANALYSIS OF WELDED 16Mn STEEL PENSTOCK USED FOR RYDROELECTRIC POWER PLANT

Li Dadong, Lin Jiandong, He Qiping

1997, 18(2): 18-25.

Abstract(20) PDF(1)

Abstract:
The fracture failure analysis was carried out on the two lengths of fractured and cracked welded 16Mn steel penstock used for hydroelectric power plant with reference to the chemical composition and physical property of the standard steel plate of GB1591-88 for low alloy structural steel;the technique of thermal simulation for welding was adopted to evaluate the notch sensitivity,impact toughness and thermal strain embrittlement tendency of the heat affected zone; through the welding crack test of inclined Y groove,physical inspection of mechanical property of welded joint,etc,the steel plate quality and welding process were reviewed as well.

EXPERIMENTAL STUDY ON DYNAMIC FRACTURE TOUGHNESS K_Id OF HEAVY RAIL STEEL

Qiu Xiaogang

1997, 18(2): 26-30,60.

Abstract(22) PDF(0)

Abstract:
With Sharpy impact specimen,an experimental study was carried out on the dynamic fracture toughness K_Id of heavy rail steel using a pendulum impact tester. The dynamic geometrical factor f(a/W) for heavy rail steel was measured with the method of dimensionless flexibility. The test result has shown that the loading rate and experimental temperature including the range of specimen's width have a considerable effect on K_Id. The present achievement has a certain referen-tial value for the evaluation of dynamic fracture toughness of heavy rail steel produced by Panzhi-hua Iron and steel Corp.

DEVELOPMENT OF PROPORTIONING SCHEDULE FOR CERAMIC TILE PRODUCTION WITH WASTE SLAG AT PANGANG

Wang Hua

1997, 18(2): 31-34.

Abstract(15) PDF(0)

Abstract:
The research on the proportioning schedule for ceramic tile production was conducted with local cheap raw materials instead of 3 expensive ones originally purchased outside. As a result, a bronze-coloured and iron red proportioning schedule was successfully developed, and the process of high temperature oxidation pretreatment of waste slag at pangang was cancelled. The practice has shown that the product property has reached or overtaken the standard EN-176- 91 and the cost has greatly decreased.

STATUS OF BLAST FURNACE OPERATION AND ITS DEVELOPMENT AT HOME AND ABROAD

Zhang Wenxin

1997, 18(2): 35-43.

Abstract(12) PDF(0)

Abstract:
The followings are briefly illustrated such as the status of blast furnace operation,pig iron output of major steel producers,and main technical and economic indexes of some blast furnaces at home and abroad in the 90s. The predominant tendency of blast furnace practice is also analyzed.

GLOBAL TECHNICAL STATUS OF HIGH BLAST TEMPERATURE AND LONGEVITY OF HOT STOVE AND SUGGESTIONS FOR PANGANG

Yang Dongmei, Li Shenzhao

1997, 18(2): 44-53.

Abstract(21) PDF(0)

Abstract:
The present paper introduces the technical measures globally taken for hot stoves with high blast temperature and long service life,which include the improvement of structural pattern,refractory quality, new development of brickbuilding and burner, combination firebrick technique,etc. The investigation on the status of hot stoves at Pangang is conducted,and the existing problems are also analyzed for the suggestions raised thereafter.

TENDENCY OF DEEP WORKING FOR COLD ROLLED STEEL SHEET AT HOME AND ABROAD

Zhao Xingwu

1997, 18(2): 54-60.

Abstract(25) PDF(0)

Abstract:
The state of the art and the trend of development for surface treatment of cold rolled steel sheet are outlined,and the application field of these surface treated products is introduced as well in the present paper.

TECHNOLOGICAL ANALYSIS ON REDUCTION OF FERROUS CHARGE CONSUMPTION FOR BOF

Zheng Xiaofeng, Ge Wensun, Xie Mingke, Wang Jingsong

1997, 18(2): 61-65.

Abstract(23) PDF(0)

Abstract:
The state of development,the experience of practice and the effect of reducing BOF's ferrous charge consumption at home and abroad have been reviewed in the light of the characteristic of natural resources and the BOF's processing status at Pangang,and a related practical schedule has been worked out to reduce the BOF's ferrous charge consumption.

STATUS ANALYSIS OF FILTERING OPERATION MINERAL PROCESSING PLANT OF PANGANG

Guo Mingbin

1997, 18(2): 66-70.

Abstract(20) PDF(0)

Abstract:
Both the status and existing problems of filtering operation at the magnetic separating workshop of Mineral Processing Plant of Mineral Mining Co. of Pangang are introduced,and the specific measure and assumption are raised accordingly to improve the status of filtering operation and to lower the moisture of concentrate filtered.

1997 Vol. 18, No. 2