Method of manufacturing an assembly comprising a plurality of blades mounted in a platform

A blade and component technology, which is applied to the manufacturing field of fixed integral blisks, can solve problems such as being unsuitable for manufacturing large-sized metal parts, and achieve the effect of simple positioning steps.

Active Publication Date: 2015-10-07
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] One solution is to use the MIM method to manufacture the blisk segment in a single operation, but the MIM method is not suitable for manufacturing large size metal parts

Method used

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  • Method of manufacturing an assembly comprising a plurality of blades mounted in a platform
  • Method of manufacturing an assembly comprising a plurality of blades mounted in a platform
  • Method of manufacturing an assembly comprising a plurality of blades mounted in a platform

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Embodiment Construction

[0047] An integral blisk, such as a stator guide vane assembly of a turbojet compression stage, is conventionally formed from a plurality of blades held between an annular outer platform and an annular inner platform. The stator guide vane assembly blisk is divided into angular segments which are manufactured separately and joined together to form the stator guide vane assembly disc after installation in a turbojet compression stage.

[0048] refer to figure 1 , each stator guide vane assembly segment 11 comprises a plurality of vanes 9 fixed at their radially inner ends to an annular inner platform portion 8 (known as inner platform section 8) and at their radially outer ends to an annular outer platform Section 7 (outer platform section 7).

[0049] Refer again figure 1 , according to the first embodiment of the manufacturing method of the present invention, the platform sections 7, 8 are manufactured by Metal Injection Molding (MIM) method, in which fine alloy (nickel, ti...

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Abstract

A method of manufacturing an assembly, including a plurality of blades mounted in a platform preparing a mixture of metal powder and thermoplastic binder, includes manufacturing the blades separately from the platform, and finishing the blades after the manufacturing. The method also includes injecting the mixture into a mold to obtain a platform blank, removing the binder from the platform blank prior to assembling the finished blades with the blank, inserting one end of the finished blades into a housing formed in the platform blank in order to assemble the assembly, and sintering the assembly comprising the platform blank and the finished blades to unify the assembly.

Description

technical field [0001] The invention relates to the manufacture of turbine blisk (bladed disk) sections, especially stationary blisks. Background technique [0002] In the following, the known fixed blisk is a segment guide vane assembly when forming part of the compressor of a turbomachine and a nozzle guide vane assembly when forming part of the turbine wheel of a turbomachine. [0003] The segment guide vane assemblies or nozzle guide vane assemblies are formed from angular segments each comprising a plurality of vanes held between two platforms. For example, for an axial flow turbine, the blades are held between a radially outer platform (known as an outer platform section) and a radially inner platform (known as an inner platform section). [0004] In one method of manufacturing blisks, stator guide vane assembly segments or nozzle guide vane assembly segments are formed using the known "lost wax" casting method in which: [0005] First, make a wax (or some equivalent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/06B23P15/00F01D5/02B22F5/00
CPCF01D9/044B22F5/04B22F7/062B22F2998/10B23P15/006F05D2230/21F05D2230/22F05D2300/43F05D2300/603B22F3/225B22F3/10
Inventor 吉恩-保罗·伯纳德瓦内萨·门格林吉恩-巴普蒂斯特·莫当
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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