Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith

Inactive Publication Date: 2009-02-19
MTU AERO ENGINES GMBH
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  • Abstract
  • Description
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  • Application Information

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Benefits of technology

[0011]As a result of the invention, the disadvantages of the prior art are avoided and a machine process that can be automated is provided, the method permitting significant savings of time and labor and leading to reproducible results.
[0012]In particular, the method in accordance with the invention permits a stable process for the manufacture of small and minute radii and/or specific geometric configurations of the edges. In areas that must be peened for solidification, the edge radii must be defined to be at least 0.05 mm. As a result, there is, in fact, no material shifting. Referring to the suggested method, minimum data regarding the edges or geometry of the radii is sufficient. Due to the inventive combination of the pr

Problems solved by technology

This involves high costs regarding time and labor, whereby even targeted contro

Method used

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  • Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith
  • Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith

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[0027]FIG. 1 shows a flowchart of a first embodiment of an inventive method which uses a metallic component for machining. In particular considering blades of turbo machines, high-quality alloys, e.g., nickel-based alloys, are used. Further, these blade components frequently have so-called fur-tree blade roots with several edges. In accordance with the invention, the component is initially machined, for example, machined down, or ground or treated electrochemically, for example, by an erosion process. In so doing, corresponding edges are produced or reworked.

[0028]During the next method step, the component is transferred to an ultrasonic shot peening station. The component, depending on its size, is placed in a housing having a size of 15 mm3 to 8 m3. Then the minute radii of 0.05 mm are solidified by ultrasonic shot peening. The peening process lasts approximately 1 minute to 5 minutes. Referring to the described ultrasonic shot peening, a piezoelectric transducer emits ultrasonic ...

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Abstract

A method for producing metallic components, and metallic components produced by the method, particularly for turbo machines, having small edge radii, is disclosed. The method includes mechanical and/or electrochemical machining of a component while producing a small edge radius and solidifying the small edge radius by ultrasonic shot peening. As a result of the method, the disadvantages of the prior art are avoided and a machine process that can be automated has been provided, the method permitting considerable savings of time and labor and leading to reproducible results.

Description

[0001]This application claims the priority of International Application No. PCT / DE2006 / 001972, filed Nov. 10, 2006, and German Patent Document No. 10 2005 054 866.0, filed Nov. 17, 2005, the disclosures of which are expressly incorporated by reference herein.BACKGROUND AND SUMMARY OF THE INVENTION[0002]The invention relates to a method for producing metallic components, particularly for turbo machines, having small edge radii.[0003]The rounding of edges on components, particularly of turbo machines, may be necessary for the most varied reasons. These include the improvement of strength and / or aerodynamics, as well as avoiding the risk of injury. Depending on the component, these may be sharp edges on components that are attached to adjacent surfaces of the component. Alternatively, the edges may also form planar or three-dimensional surfaces which connect adjacent, generally considerably larger, surfaces of the component. The last-mentioned case usually applies to relatively roughly...

Claims

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Application Information

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IPC IPC(8): B21D53/78B24C1/10
CPCB21D53/78B23H9/10Y10T29/49336B24C1/10B24C5/005B24C1/083
Inventor DAUTL, THOMASPESCHKE, THOMASWINKLER, ALEXANDER
Owner MTU AERO ENGINES GMBH
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