Advanced Materials Research Vol. 1048

Abstract: The steam turbine blade is one of the important parts of steam turbine, its quality fit and unfit quality directly impact on the performance of steam turbine. Turbine blade has its type surface complex, requiring precision higher and other characteristics, so it was a difficult problem in the field of machinery manufacturing. Therefore, how to adopt appropriate methods to improve the manufacturing quality of blade is of great significance. This paper has discuses the big distortion, the variable cross-section of turbine blade NC machining method, completed numerical control simulation and all the process and post processing in Cimatron E8.5 software environment. For similar modalities surface parts of NC machining provided a good idea.

Abstract: In order to solve the problem of the traditional u-shaped canal, including of size small, joint bad problems, water penetration, and bad ability of frost resistance, this paper launched preliminary research of a new u-shaped product development. Length of new canal products is twice; steel fiber of coated copper can increase resistance of rust and crack than traditional U-shaped canal. Hydro-expansive rubber of Putty type was applied to improve the compatibility of deformation joint and improve the permeability resistance. The best filling cross-section rectangle is truly adopted, not only having all advantages of traditional U-shaped canal and ladder type, but also having high mechanical properties, excellent durability, good environmental performance, good quality assembly components, high ratio of cost and performance. It is upgrading products of control the structure of traditional u-shaped slot and ladder type slot and can solve the "last kilometer" problem in the field.