Transactions of Materials and Heat Treatment

Title：Hydroforming technology of high cone parts for aero-engine

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ClassificationCode：TG301

year,vol(issue):pagenumber：2020,45(7):72-76

Abstract：

For the typical high cone part which was difficult to form in aero-engine, its hydroforming process was studied. Then, the material performance parameters such as stress-strain curve of material were obtained by the single tensile test, and the hydroforming process of high cone part was simulated by finite element thin plate analysis software. Furthermore, the wrinkling of front arc surface was controlled and the drawing was complete by optimizing process parameters and blank sizes, and the roundness of straight arm segment was controlled by pre-drawing-heat treatment process-final drawing. Finally, according to the results of numerical analysis and the phenomenon of on-site part drawing, the process parameters were repeatedly modified to reach the stable drawing parameters. Compared with the test data and existing process parameters, the forming limit of material is increased by 4% by comparing hydroforming of high cone parts with traditional rigid drawing, the profile of parts reaches 0.1 mm, the period is shortened by 20%, and the qualification rate of parts reaches 99%. Thus, the problems of wrinkling, cracking, large roundness error existing in the traditional rigid drawing process are solved.

Funds：

天津科技支撑计划项目（18YFCZZC00240）

陈林（1987），男，学士，中级工程师 E-mail：chenlin210@126.com 通讯作者：熊爱奎（1985），男，硕士，中级工程师 E-mail：xiong791912@126.com

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