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Process for forging hydrogenated titanium alloy forging blade

A titanium alloy and blade technology, applied in the field of blade forging technology, can solve the problems of low blade dimensional accuracy, high forging temperature, and high performance requirements of mold materials, and achieve the effects of reducing forging temperature, improving forming performance, and improving dimensional accuracy

Active Publication Date: 2010-02-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high forging temperature, high requirements on the material properties of the mold and low precision of blade size in the forging production of titanium alloy blades on existing aero-engines, and provide a forging method for forging blades of titanium alloy with hydrogen craft

Method used

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specific Embodiment approach 1

[0006] Specific Embodiment 1: This embodiment is achieved through the following steps: Step 1, hydrogen charging treatment: After cleaning the surface of the titanium alloy blade blank with acetone, place it in a tubular hydrogen furnace, and vacuumize the furnace to 10 -3 Pa, then raise the temperature in the furnace to 700°C to 800°C, and keep it warm for 15 minutes to make the temperature of the inner and outer surfaces of the titanium alloy blade blanks the same. 1L / min, keep warm for 2-4 hours, and then cool the furnace to room temperature at a rate of 10°C / min to obtain the hydrogenated titanium alloy blade blank; Step 2, mechanical processing: machine the hydrogenated titanium alloy blade blank Processed into prefabricated blanks of hydrogenated titanium alloy blades; step 3, the first sand blasting treatment: perform sandblasting treatment on the surface of prefabricated blanks of hydrogenated titanium alloy blades to ensure that the lubricant can adhere to the surface ...

specific Embodiment approach 2

[0007] Specific embodiment two: in the step one of present embodiment, be filled with 0.25% hydrogen by weight percentage of titanium alloy blade blank, in the step five, the mold that hydrogen titanium alloy blade prefabricated blank is housed should heat up in the resistance furnace on the hydraulic press. In the range of 800~900℃. When the hydrogen content of the forged blade of the hydrogenated titanium alloy is 0.25%, the required forging temperature is lower, and the microstructure and properties of the hydrogenated titanium alloy forged blade are the best. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0008] Embodiment 3: In step 7 of this embodiment, when the forging temperature is 800° C., the pressing speed of the upper mold is 0.008 mm / s. Other steps are the same as in the first embodiment.

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Abstract

The invention discloses a process for forging a hydrogenated titanium alloy forging blade, which relates to a blade forging process. The invention aims to solve the problems of high forging temperature and material performance requirement of a die and low blade size precision of a titanium alloy blade on the prior aeroengine in the forging production. The process comprises the following steps: 1.filling hydrogen in a titanium alloy blade blank; 2. processing the hydrogenated titanium alloy blade blank into a hydrogenated titanium alloy blade prefabricated blank; 3. carrying out first sand blasting processing; 4.spraying a lubricating agent; 5. placing the hydrogenated titanium alloy blade prefabricated blank in a preheated die; 6. forging to obtain the hydrogenated titanium alloy blade forging blank; 7. removing furs; 8. carrying out second sand blasting processing; 9. washing; and 10. dehydrogenizing to obtain the hydrogenated titanium alloy forging blade. In the method, a hydrogen element is filled in the titanium alloy blade blank; when the hydrogenated titanium alloy blade is forged, the forging temperature can be reduced, thereby reducing the deformation and the abrasion degree of the die and further improving the size precision of the titanium alloy blade.

Description

technical field [0001] The invention relates to a blade forging process. Background technique [0002] In recent years, with the development of new aircraft in the direction of lightweight, high performance and low cost, higher requirements have been put forward for its power system. The aero engine is the "heart" of the aircraft, and the blade is the most used type of part in the aero engine, which plays a key role in energy conversion in the aero engine. Since the aero-engine blades operate under high-speed, high-pressure and high-temperature conditions, and the working conditions are harsh, titanium alloys are considered to be one of the ideal materials for the manufacture of aero-engine blades due to their advantages of high strength, good heat resistance and corrosion resistance; but In the forging production of aero-engine titanium alloy blades, due to the high forging temperature, heavy equipment load, and easy deformation and wear of the mold, the dimensional accura...

Claims

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Application Information

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IPC IPC(8): B21K3/04C22F1/18B21J1/00B21J3/00B21J1/06B21J5/02C21D3/06
Inventor 单德彬宗影影罗永胜阴中炜陆廷府
Owner HARBIN INST OF TECH
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