材料期刊网

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

WELDING BETWEEN HIGH MANGANESE STEEL AND HIGH CARBON STEEL

M. H. Guo , D. C. Shao , Z. G Dong and J. C Yang National Key Laboratory Advanced Welding Production Technology , Harbin institute of Technology , Harbin 150001 , China

金属学报(英文版)

Manuscript received 30 July 1999 Abstract The shielded metal arc welding (SMAW) of a manganese steel part as a crossing of railway track to a carbon steel part as the rails of the railroad is the welding of dissimilar steel. It are was known that it is not possible to the the rail of railroad directly to the cross- ing of railway track made from a steel containing about 14% of manganese (wt. ) because of so many differences between the two kinds of steels such as composition, microstructure,mechanical properties and weldability.A method was used to solve the problem by presetting an intermediate layer on each side of the joint and other special procedures were used.The result of test indicated that a good weld joint was obtained.

关键词: high manganese steel , null , null , null

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

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Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

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Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

关键词:

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

关键词:

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

关键词:

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

关键词:

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

关键词:

Bibliography of Science and Technology of Rare Earths Published in China(1999)

稀土学报(英文版)

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