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Quasi beta forging process for TC25 titanium alloy

A titanium alloy and process technology, which is applied in the quasi-β forging process field of TC25 titanium alloy, can solve the problems of long production cycle and high production cost, and achieve the effects of fast hammering speed, excellent mechanical properties and excellent organizational state

Inactive Publication Date: 2014-03-26
WUXI TURBINE BLADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alloy has been trial-produced by isothermal forging on a hydraulic press, the production cost of this process is high and the production cycle is long. However, there is no precedent for producing this alloy forging on a high-energy screw press in China.

Method used

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  • Quasi beta forging process for TC25 titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Processing a kind of TC25 alloy disc class forgings, it comprises the following process steps:

[0014] (1) Cutting: Grinding the edge of the bar into rounded corners;

[0015] (2) Billet making: heating the bar and upsetting the bar by free forging, and then spraying Ti-1 protective agent on the surface of the billet;

[0016] (3) Heating the billet before forging: the billet is heated at medium temperature, the heating temperature at medium temperature is Tβ-30°C, and the heating coefficient at medium temperature is 0.8min / mm; then the billet is heated at high temperature, the heating temperature at high temperature is Tβ+20°C, and the heating coefficient at high temperature is heating The coefficient is 0.5min / mm;

[0017] (4) Die forging: assemble the forging die on a high-energy screw press, put the billet heated before forging into the forging die, and die-forge the billet by the high-energy screw press; the deformation of the forging during the die forging proce...

Embodiment 2

[0020] Processing a kind of TC25 alloy disc class forgings, it comprises the following process steps:

[0021] (1) Cutting: Grinding the edge of the bar into rounded corners;

[0022] (2) Billet making: heating the bar and upsetting the bar by free forging, and then spraying Ti-1 protective agent on the surface of the billet;

[0023] (3) Heating the blank before forging: the blank is heated at medium temperature, the heating temperature at medium temperature is Tβ-10°C, and the heating coefficient at medium temperature is 0.6min / mm; then the blank is heated at high temperature, the heating temperature at high temperature is Tβ+5°C, and the heating coefficient at high temperature is heating The coefficient is 0.6min / mm;

[0024] (4) Die forging: assemble the forging die on a high-energy screw press, put the billet heated before forging into the forging die, and die forge the billet by the high-energy screw press; the deformation of the forging during the die forging process i...

Embodiment 3

[0026] Processing a kind of TC25 alloy disc class forgings, it comprises the following process steps:

[0027] (1) Cutting: Grinding the edge of the bar into rounded corners;

[0028] (2) Billet making: heating the bar and upsetting the bar by free forging, and then spraying Ti-1 protective agent on the surface of the billet;

[0029] (3) Heating the blank before forging: the blank is heated at medium temperature, the heating temperature at medium temperature is Tβ-20°C, and the heating coefficient at medium temperature is 1.0min / mm; then the blank is heated at high temperature, the heating temperature at high temperature is Tβ-10°C, and the heating coefficient at high temperature is heating The coefficient is 0.4 min / mm;

[0030] (4) Die forging: assemble the forging die on a high-energy screw press, put the billet heated before forging into the forging die, and die forge the billet by the high-energy screw press; the deformation of the forging during the die forging process...

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Abstract

The invention provides a forging technology. Through the adoption of the technology, the purposes that a TC25 alloy forged piece can be produced on a high power screw press, and the mechanical property, the metallographic structure and the ultrasonic wave of the forged piece can satisfy the standard requirements of a certain type of engine made of the TC25 alloy can be achieved. The technology comprises the following processing steps: firstly blanking, then manufacturing blanks, heating the manufactured blanks before forging, putting the blanks heated before forging in a die for die forging, and finally performing heat treatment on the forged piece molded through forging so as to obtain the TC25 alloy. The technology is characterized in that the high power screw press is adopted to perform die forging on the blanks heated before forging.

Description

technical field [0001] The invention relates to the field of forging processing of aero-engine disc forgings, in particular to a quasi-beta forging process of TC25 titanium alloy. Background technique [0002] TC25 alloy belongs to martensitic α+β two-phase deformation heat-strength titanium alloy, which has good heat strength and heat resistance. Although this alloy has been trial-produced by isothermal forging on a hydraulic press, the production cost of this process is high and the production cycle is long. However, there is no precedent for producing this alloy forging on a high-energy screw press in China. Contents of the invention [0003] In view of the above problems, the present invention provides a quasi-β forging process of TC25 titanium alloy, which can realize the production of TC25 alloy forgings on a high-energy screw press, and ensure that the mechanical properties, metallographic structure and ultrasonic waves of the forgings can all meet the standard requ...

Claims

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Application Information

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IPC IPC(8): C22F1/18
Inventor 刘铭理李晓婷仲惟光魏丽黄继凤
Owner WUXI TURBINE BLADE
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