The smelting of titaniferous magnetite in blast fuynace in China is unique in the nature of problems and their solutions. Fundamentals of this successful technology will be discussed. Topics to be covered are: (1) the...The smelting of titaniferous magnetite in blast fuynace in China is unique in the nature of problems and their solutions. Fundamentals of this successful technology will be discussed. Topics to be covered are: (1) the characteristics of high content TiO_2 in blast furnace slag; (2) influence of various factors on Ti transfer process; (3) raising oxygen potential for adequate fluidity of the slag with TiO_2 in the range of 25-30 wt-% and stability of TiC and TiN in slag.展开更多
The variation in arc characteristics and behavior of metal transfer with the change in pulse parameters has been studied by high speed video camera during pulse current flux-cored arc weld deposition.A comparative stu...The variation in arc characteristics and behavior of metal transfer with the change in pulse parameters has been studied by high speed video camera during pulse current flux-cored arc weld deposition.A comparative study of similar nature has also been carried out during flux-cored arc weld deposition in globular and spray transfer modes.The effect of pulse parameters has been studied by considering their mean current and arc voltage.The arc characteristics studied by its root diameter,projected diameter and length,and the behavior of metal transfer noted by the metal transfer model and the droplet diameter have been found to vary significantly with the pulse parameters.The observation may help in understanding the arc characteristics with respect to the variation in pulse parameters which may be beneficial in using pulse current FCAW to produce desired weld quality.展开更多
文摘The smelting of titaniferous magnetite in blast fuynace in China is unique in the nature of problems and their solutions. Fundamentals of this successful technology will be discussed. Topics to be covered are: (1) the characteristics of high content TiO_2 in blast furnace slag; (2) influence of various factors on Ti transfer process; (3) raising oxygen potential for adequate fluidity of the slag with TiO_2 in the range of 25-30 wt-% and stability of TiC and TiN in slag.
文摘The variation in arc characteristics and behavior of metal transfer with the change in pulse parameters has been studied by high speed video camera during pulse current flux-cored arc weld deposition.A comparative study of similar nature has also been carried out during flux-cored arc weld deposition in globular and spray transfer modes.The effect of pulse parameters has been studied by considering their mean current and arc voltage.The arc characteristics studied by its root diameter,projected diameter and length,and the behavior of metal transfer noted by the metal transfer model and the droplet diameter have been found to vary significantly with the pulse parameters.The observation may help in understanding the arc characteristics with respect to the variation in pulse parameters which may be beneficial in using pulse current FCAW to produce desired weld quality.