Isothermal beta forging method for TC17 titanium alloy blade

A titanium alloy and isothermal forging technology, applied in the forging field of warm beta forging, can solve the problem of high process requirements, achieve the effect of good overall economy and ensure filling.

Active Publication Date: 2017-05-03
SHAANXI HONGYUAN AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current TC17 blisk forging has high technical requirements

Method used

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  • Isothermal beta forging method for TC17 titanium alloy blade
  • Isothermal beta forging method for TC17 titanium alloy blade

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1. Preliminary basic research

[0017] On the basis of computer simulation, the actual production test results of blanks with different geometric parameters and process parameters are studied respectively. Different geometric parameters and process parameters are: absolute deformation; relative deformation; holding time;

[0018] 2. Preform size and shape design

[0019] On the basis of determining the basic forging parameters, the size and shape of the preform can be designed and adjusted by computer simulation technology.

[0020] 3. Titanium alloy blade isothermal die forging

[0021] According to the factory's mold design manual for isothermal forging and the characteristics of blade forging, design the isothermal forging die reasonably.

[0022] 4. Formulation of heat treatment process for isothermal forgings of titanium alloy blades

[0023] For the heat treatment plan of the isothermal forging of the blade, in view of the comparison with the previous producti...

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PUM

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Abstract

The invention discloses an isothermal beta forging method for a TC17 titanium alloy blade, and the problem that the process requirement of existing TC17 blisk forging is high can be solved to a certain extent. The process requirement of TC17 blisk forging is high, and the machining requirement of forge pieces in the machining link is quite high. Machining errors in machining of the blade can cause scrapping of a whole blisk forge piece, time and labor are saved, and the economic cost is high. A wheel disc and the blade are forged separately, the identical isothermal beta forging method is adopted for the blade and a compressor blisk, and thus the forging forming difficulty is low, and subsequent machining is greatly facilitated.

Description

technical field [0001] The invention belongs to the technical field of forging, and relates to a forging method for isothermal beta forging of TC17 titanium alloy blades. Background technique [0002] TC17 alloy is an α-β two-phase titanium alloy rich in β-stable elements. Its nominal composition is Ti-5Al-2Sn-2Zr-4Mo-4Cr. It is mainly used to manufacture aero-engine fans that require high strength and large cross-section. Rotating parts such as disc, compressor disc, shaft, centrifugal impeller, helicopter blade, disc integral parts, etc., the hardened thickness reaches 150mm. The alloy can be deformed either in the β zone or in the α+β zone, and then undergo corresponding heat treatment. The matching of strength, plasticity and toughness can be adjusted by heat treatment. Compared with general-purpose two-phase titanium alloys, it has higher strength, hardenability and creep resistance; compared with β titanium alloys, it has lower density, higher modulus of elasticity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K3/04B21J5/02B21K29/00B23P15/02
CPCB21J5/02B21K3/04B23P15/02
Inventor 冀胜利段辉秦卫东薛强李毅曾卫东
Owner SHAANXI HONGYUAN AVIATION FORGING
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