材料期刊网，材料期刊，材料类期刊，材料期刊投稿

THE MICROSTRUCTURE AND PROPERTY OF IN SITU TiC_P/Fe COMPOSITE

Y.W.Yan1) , B.K.Wei2) , Z.Y.Fu1) , H.T.Lin2) and R.Z.Yuan1) 1) State Key Lab .of Advanced Technologyfor Materials Synthesisand Processing , Wuhan University of Technol ogy , Wuhan 430070 , China 2) Institute of Materials , Huazhong University of Science and Technology , Wuhan 430074 , China

金属学报(英文版)

Under aircondition,theinsitu TiCP/ Fecompositeshavebeen fabricated by a reactivecast ing route usingtheinexpensiveraw materials. The microstructuresofthecompositehavebeen studied by X ray diffraction,image analyzer and analyticalelectron microscopy. The me chanicalpropertiesand abrasive wearresistanceofboththeas castcompositeandthequenched composite havebeen measured. Theresultsshow thattheinsitu TiCparticles with a average sizeof 4 51μm exhibit a homogenous distribution inthe matrix, and an excellentinterface bonding between the particle and the matrix is achieved. As above microstructure features, thecomposite,especiallythequenched composite, hashigher mechanicalpropertiesand betterwear resistance,compared with high Cr whitecastiron.

关键词: TiCP/ Fecomposite , null , null , null , null

欢迎投稿、订阅《Journal of Wuhan University of Technology-Materials Science Edition》

武汉理工大学学报-材料科学版(英文版)

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Practice for Extending Blast Furnace Campaign Life at Wuhan Iron and Steel Corporation

ZHANG Shourong

钢铁研究学报(英文版)

One of the problems encountered in 60′s to 80′s of 20th century in China′s steel industry was short life of blast furnace shaft as well as the excessive erosion of blast furnace hearth. A series of research work was carried out in order to extend blast furnace campaign life. The concept of research and development was integrated in the construction of BF (blast furnace) No5 at WISCO (Wuhan Iron and Steel Corporation), and in October, 1991, the BF No5 was blown in. The blast furnace has worked smoothly for more than 15 years without any medium repair even guniting. It is expected that the campaign life of BF No5 would be longer than 16 years with a production over 11 000 t per unit inner volume (m3). A new blast furnace with an inner volume of 3 400 m3 is under construction, and is designed with a campaign life of 20 years without any medium repair. The campaign life of blast furnaces in China has been extended in recent years.

关键词: blast furnace;campaign life;erosion

STUDY ON SYNCHRONIZER HUB PLASTIC FORMING

B. H. Zhang and Z. M. Zhang North China Institute of Technology , Taiyuan 030051 , China Mancuscript received 30 July 1999

金属学报(英文版)

Metal flowing has been numerically simulated for synchronizer hub at different forming conditions. The influences of billet shape, frictional factor,deformation degree and radius of rounded corner on form- ing for been studied and the processing parameters have been optimized. On the basis, a new technol- ogy of refilling multiplicity forming has been put forward and workpiece that meets the requirement of synchronizer hub has been manufactured.

关键词: synchronizer hub , null , null