Electrochemical Machining of Turbulated Cooling Channel Using Gelatinous Electrolyte
Electrochemical Machining of Turbulated Cooling Channel Using Gelatinous Electrolyte
复制标题
使用凝胶电解质对湍流冷却通道进行电化学加工
DOI：
10.20964/2020.06.73
复制
发表时间：
2020-06
影响因子：
1.5
通讯作者：
Shen Qi
中科院分区：
文献类型：
--
作者：
Wang Kun;Wang Yubiao;Shen Qi
涡轮刀片中的涡轮冷却通道是一种典型的特殊形状的内壁结构，可以显着增强燃气轮机叶片的冷却效果。使用电化学加工来制造冷却通道具有Advanta
The turbulated cooling channel in turbine blades is a typical special-shaped inner wall structure that can significantly enhance the cooling effect of gas turbine blades. The use of electrochemical machining to manufacture cooling channels has the advantages of high efficiency and no residual stress. However, the stray current removal cannot be completely avoided using liquid electrolyte. Consequently, an ideal inner wall structure, consisting of a turbulated cooling channel, cannot be obtained. In this paper, an electrochemical machining method is proposed in which a gelatinous electrolyte is used to meet the machining requirements. Through the cross-linking of polymers, a liquid electrolyte is filled into the gaps of the gelatinous network structure to form a gelatinous electrolyte. The stray current removal due to the flow of the liquid electrolyte is avoided. A gelatinous electrode of diameter 5 mm was prepared. A turbulated cooling channel with a rectangular cross section and rib height of 0.8 mm on nickel is obtained. The profile view of the experimentally prepared turbulated cooling channel structure has a rectangular cross section and maintains good straightness. The proposed machining method is expected to be widely applicable to electrochemical machining of the inner wall structures in narrow spaces.