Manufacturing method for Ti60 alloy double-performance blisk

Abstract

The invention discloses a manufacturing method for a Ti60 alloy double-performance blisk. The manufacturing method includes the following steps that a Ti60 alloy rod is subjected to upsetting twice and then punched, and a secondary biscuit is obtained; the secondary biscuit is machined, so that a third biscuit is obtained; the third biscuit is put under a press machine to be subjected to plastic deformation, so that a blisk forged piece is obtained; the blisk forged piece is put into a heat isolation device to be heated together, and therefore the blisk with micro-structures having different properties can be obtained. A hub portion has the good basket-weave microstructure, and a rim portion has the two-phase region machining structure, so that the blisk achieves excellent work performance during work. The manufacturing method is used for manufacturing the Ti60 alloy double-performance blisk.

Description

technical field [0001] The invention relates to a method for manufacturing a blisk, in particular to a method for manufacturing a Ti60 alloy dual-performance integral blisk. Background technique [0002] Due to its special working environment, the component parts of aero-engines require high mechanical properties. In aero-engines, high-temperature alloys, such as GH4169 or GH768, are often used to forge and process the compressor discs of aero-engines. Alloy forged discs have good high temperature resistance, strength, strong fracture toughness, high hardenability, wide selection of forging temperature range and many other advantages, which can meet the needs of damage tolerance design and the reliability of practical applications , these excellent comprehensive properties need to be realized in the heat treatment process. [0003] In terms of leaf disk technology, the domestic technology usually makes leaves and disks separately, and heats the leaves and disks separately t...

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Problems solved by technology

[0003] In terms of leaf disk technology, the domestic technology usually makes leaves and disks separately, and heats the leaves and disks separately to achieve the required mechanical properties, and then uses various connection methods to connect the leaves and disks. Assembled together to form blisks, the material selection is usually made of high-temperature alloys. The advantage of this split blisk is that it can control the mechanical properties of different parts of the parts, but it also has certain limitations. Defects, that is, the solidity of the split blisks is not good, and when working in harsh environments, the joints of the split blisks are easy to loosen and break, which affects the work of the engine and causes irreparable losses, especially the price of superalloys Expensive, the density of the material itself is high, and the use of high-temperature alloys to make blisks is not only costly, but also the weight of the parts itself is too large, which restricts the further development of aero-engines

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