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Process for friction welding blades to the drum of an axial compressor and a corresponding device

A friction welding, axial-flow turbine technology, which is applied to the device implementing the above method, the drum of the compressor, the axial-flow turbine, and the corresponding device fields, can solve problems such as the inability to determine or specify an economical solution, and reduce machining. The effect of time, equipment cost reduction and energy consumption reduction

Active Publication Date: 2015-06-24
SAFRAN AERO BOOSTERS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it mentions other friction welding methods such as rotational, inertial, or orbital friction welding, it cannot identify or detail a more economical alternative

Method used

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  • Process for friction welding blades to the drum of an axial compressor and a corresponding device
  • Process for friction welding blades to the drum of an axial compressor and a corresponding device
  • Process for friction welding blades to the drum of an axial compressor and a corresponding device

Examples

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Embodiment Construction

[0032] figure 1 An axial twin-flow turbine 2 of an aeroengine is shown. This machine includes in order from the inlet to the outlet: fan 4, low-pressure compressor 6, high-pressure compressor 8, combustion chamber 10, high-pressure turbine 11 and low-pressure turbine 12. Inlet air is forced into the machine by the fan 4 and then divided into a primary airflow passing through the different components above and a secondary airflow passing through the machine outside these components, the secondary airflow merges with the primary airflow at the outlet to generate propulsion thrust.

[0033] figure 1 The enlarged part shows the low-pressure compressor 6 in detail, mainly comprising the rotor 14 and the stator 32 . The rotor is formed by a hollow body 16 which is substantially rotationally symmetrical about its axis of rotation, the hollow body 16 being provided with rows of rotor blades 18 , 20 and 22 . The stator 32 includes a split nose 34 which divides the inlet flow, a wall...

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Abstract

The method involves positioning a rotor (14) i.e. compressor drum, to provide a faying surface for a set of rotor blades (18, 20, 22) by locating a support within the drum on an internal surface of the drum. One of the blades is moved with orbital frictional motion against the faying surface for the blade in a mean contact plane between the blade and the faying surface such that welding temperature is measured, where the rotor is held motionless in the plane of frictional movement of the blade. The blade is immobilized, and forging pressure is exerted on the blade against the rotor. An independent claim is also included for a device for friction welding blades to a rotor of an axial turbomachine.

Description

technical field [0001] The present invention relates to a friction welding process to attach blades to an axial turbine rotor, in particular to the drum of a compressor of an axial turbine. The invention also relates to a corresponding device, that is to say a device for carrying out the method described above. The invention also relates to an axial turbine obtained by the process or by using the device. Background technique [0002] Friction welding is a welding process in which the mechanical heat necessary for welding is generated by rubbing the parts against each other to join them under so-called axial upsetting pressure. [0003] Patent US2003 / 0201305A1 discloses a friction welding device for attaching blades to a rotor. The welding principle disclosed in this document is based on linear friction and uses a device originally designed for linear welding capable of imparting a back and forth motion to the workpiece relative to the substrate to be welded. The movement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12B23K20/26
CPCF01D5/3061B23K20/12B23K20/129B23K2101/001F01D5/34F05B2230/239F05D2230/232
Inventor M·夫拉索斯基
Owner SAFRAN AERO BOOSTERS SA