Aluminum alloy blade forged piece and manufacturing method thereof

A technology for aluminum alloys and forgings, which is applied in the field of aluminum alloy blade forgings and its preparation, can solve the problems of not significantly improving the comprehensive mechanical properties of 2219 aluminum alloys, the comprehensive mechanical properties of 2219 aluminum alloys are not up to the standard, and the implementation steps are complicated and cumbersome. Industrial production application, saving manpower and material resources, and the effect of short process cycle

Inactive Publication Date: 2018-05-08
WUXI TURBINE BLADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the implementation steps of the above invention are complex and cumbersome, the process cycle is long, and the energy consumption is high, and the comprehensive mechanical properties of 2219 aluminum alloy have not been significantly improved.
[0005] With the development of my country's aerospace vehicles, the requirements for material properties are getting higher and higher, resulting in the comprehensive mechanical properties of 2219 aluminum alloys not up to standard. There is no precedent for the production of 2219 aluminum alloy blade forgings for new aero-engines in China.

Method used

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  • Aluminum alloy blade forged piece and manufacturing method thereof
  • Aluminum alloy blade forged piece and manufacturing method thereof
  • Aluminum alloy blade forged piece and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Unloading;

[0039] 2) The roll forging die is used for roll forging, drawing and upsetting, the bar heating temperature is 400℃, the holding time is 2min / mm, the bar deformation is 60%, and the tooling preheating temperature is 200℃;

[0040] 3) Place the billet in a die for forging, select spiral pressure for die forging, and control the deformation of each part at 20-80%, the billet heating temperature is 400℃, the holding time is 2min / mm, and the tooling preheating temperature is 200℃;

[0041] 4) Solution heat treatment of the workpiece: holding temperature 300℃, holding time 100min, heating rate 100℃ / h, quenching transfer time≤60s, quenching water temperature≤30℃, temperature rise during quenching not exceeding 20℃, forging cooling time 30min;

[0042] 3) Cold forging: the deformation of the workpiece is controlled at 3%, and it needs to be completed 3h after solid solution;

[0043] 6) The workpiece is subjected to aging heat treatment: the holding temperature is 160℃, ...

Embodiment 2

[0045] 1) Unloading;

[0046] 2) The roll forging die is used for roll forging, drawing and upsetting, the bar heating temperature is 380℃, the holding time is 1min / mm, the bar deformation is 20%, and the tooling preheating temperature is 130℃;

[0047] 3) Place the billet in a die for forging, select spiral pressure for die forging, and control the deformation of each part at 20%, the billet heating temperature is 380°C, the holding time is 1 min / mm, and the tooling preheating temperature is 130°C;

[0048] 4) Solution heat treatment of the workpiece: holding temperature 490℃, holding time 60min, heating rate 30℃ / h, quenching transfer time≤60s, quenching water temperature≤30℃, temperature rise during quenching not exceeding 20℃, forging cooling time 30min;

[0049] 3) Cold forging: the deformation of the workpiece is controlled at 1%, and it needs to be completed 4 hours after solid solution;

[0050] 6) The workpiece is subjected to aging heat treatment: the holding temperature is 190...

Embodiment 3

[0052] 1) Unloading;

[0053] 2) The roll forging die is used for roll forging and drawing and the upsetting of the upsetting die. The bar heating temperature is 480℃, the holding time is 3min / mm, the bar deformation is 80%, and the tooling preheating temperature is 400℃;

[0054] 3) The blank is placed in a die for forging, and the screw pressure is selected for die forging. The deformation of each part is controlled at 80%, the blank heating temperature is 480℃, the holding time is 3min / mm, and the tooling preheating temperature is 400℃;

[0055] 4) The workpiece is subjected to solution heat treatment: holding temperature 340℃, holding time 120min, heating rate 130℃ / h, quenching transfer time≤60s, quenching water temperature≤30℃, temperature rise during quenching does not exceed 20℃, forging cooling time 100min;

[0056] 3) Cold forging: the deformation of the workpiece is controlled at 3%, and it needs to be completed within 8 hours after solid solution;

[0057] 6) The workpiece is...

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Abstract

The invention discloses an aluminum alloy blade forged piece and a manufacturing method of the aluminum alloy blade forged piece. The manufacturing method comprises main steps of roll forging, upsetting blank making, screw press die forging, solid solution, small-deformation cold forging and aging thermal treatment. The heating parameter and the deformation parameter are reasonably set, and the cold forging deformation and the cold forging time of the forged piece are accurately controlled, so that 2219 aluminum alloy is processed. The workpiece heating temperature in the blank making step andthe die forging step ranges from 380 DEG C to 480 DEG C, the workpiece deformation in the blank making step and the die forging step ranges from 20% to 80%, the cold forging step needs to be accomplished within 3-12 hours after the solid solution step is accomplished, the workpiece deformation ranges from 1% to 5%, and finally the 2219 aluminum alloy blade forged piece with the uniform metallographic structure state and the good mechanical property is obtained. The technical requirement of a novel aero-engine for using the aluminum alloy blade forged piece can be met.

Description

Technical field [0001] The invention relates to the field of metal material forging forming, in particular to an aluminum alloy blade forging and a preparation method thereof. Background technique [0002] 2219 aluminum alloy is Al-Cu-Mn series heat-treatable and deformed aluminum alloy. This alloy has good high and low temperature mechanical properties, stress corrosion resistance, welding performance and fracture toughness. It is widely used in aerospace and aviation fields, mainly for manufacturing Suitable for structural parts and high-strength welded parts that work at 313°C, 2219 aluminum alloy is fully adopted for the tanks of active launch vehicles in my country. [0003] my country's understanding of the comprehensive mechanical properties and heat treatment technology of 2219 aluminum alloy is not deep and systematic. The basic properties of 2219 aluminum alloy mainly stay in the content introduced in the materials manual, and the high and low temperature mechanical proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K3/04C22F1/04C21D9/00
CPCB21K3/04C21D9/0068C22F1/04
Inventor 周大云方萍贺小容黄定辉仲惟光黄玉亭
Owner WUXI TURBINE BLADE
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