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Titanium-aluminum alloy hot forging forming method and die

A technology of titanium-aluminum alloy and forming dies, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of high price, high cost, and difficult processing, so as to improve strength, toughness, and service life , the effect of improving production efficiency

Active Publication Date: 2022-03-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of high price, high cost and difficult processing of titanium-aluminum alloy processing forging die materials in the prior art, and provide a low-cost, high-efficiency, easy-to-replace hot forging forming die for titanium-aluminum alloy

Method used

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  • Titanium-aluminum alloy hot forging forming method and die

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a titanium aluminum alloy hot forging forming die, as attached figure 1 As shown, a titanium-aluminum alloy hot forging forming die includes an outer mold 5 and an inner mold arranged from outside to inside, and the inner mold is composed of a second inner mold 4 and a first inner mold 1 that are tightly combined from outside to inside, A heating hole 3 is installed inside the first inner mold 1 , and both the outer mold and the inner mold are arranged in the mold frame 2 . In order to form a temperature gradient between the inner and outer molds, heat-insulating ceramic fibers are laid between the outer mold, the second inner mold and the first inner mold, with a thickness of 1-5mm.

[0038] Wherein, the first inner mold is made of a material with high temperature resistance, high temperature yield strength of 900°C greater than 200MPa, and high thermal expansion rate. Generally, high temperature alloy or heat-resistant steel material can be se...

Embodiment 2

[0042] This embodiment provides a titanium-aluminum alloy hot forging forming method for aeroengine blades, which is to wrap a titanium-aluminum blank with a diameter of 30mm in glass heat-insulating fibers, and the thickness of a single layer of glass heat-insulating fibers wrapped in the blank is 1mm, and the rod is first wrapped The material core layer is wrapped with 4 layers of glass heat-insulating fibers, with a thickness of 4mm. After being tightly compressed by a roll baler, the actual thickness of the wrapped glass heat-insulating fiber layer is 2mm. Put it in a heating furnace and heat it at 8000°C for 15 minutes, take it out and cool it, and then wrap the glass insulation fiber layer twice, wrap 2 layers, the thickness is 2mm, the second layer of glass fiber insulation layer can be wrapped according to the shape, no need to compress and wrap the blank . The blank is wrapped with 6 layers of fiberglass insulation, but the actual thickness of the insulation is 4mm. ...

Embodiment 3

[0046] This embodiment provides a titanium-aluminum alloy hot forging forming method for aeroengine blades, which is to wrap a titanium-aluminum blank with a diameter of 50mm in glass heat-insulating fibers, and the thickness of a single layer of glass heat-insulating fibers wrapped in the blank is 1mm, and the rod is first wrapped The material core layer is wrapped with 6 layers of glass heat-insulating fibers, with a thickness of 6mm. After compact compression, the actual thickness of the wrapped glass heat-insulating fiber layer is 3mm. Put it in a heating furnace and heat it at 1000°C for 50 minutes, take it out and cool it, and wrap the glass insulation fiber layer twice, wrap 2 layers, the thickness is 2mm, the second layer of glass fiber insulation layer can be wrapped according to the shape, no need to compress and wrap the blank . The blank is wrapped with 6 layers of glass fiber heat insulation layer, but the actual thickness of the heat insulation layer is 5mm. Aft...

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Abstract

The titanium-aluminum alloy hot forging forming die comprises an outer die body and an inner die body which are arranged from outside to inside, and the inner die body comprises a second inner die body and a first inner die body which are tightly combined from outside to inside. The invention further discloses a titanium-aluminum alloy hot forging forming method. The service life of the die can be remarkably prolonged, the precision of a hot forging forming product is improved, the production efficiency is improved, and the production energy consumption is reduced. And meanwhile, the mold is modularized and convenient to replace, and expensive materials of the high-temperature mold are saved.

Description

technical field [0001] The invention relates to a forming method and a forming die, in particular to a titanium-aluminum alloy hot forging forming method and a forming die, and belongs to the field of hot forging forming. Background technique [0002] Titanium-aluminum alloys are often used in aeroengine blades due to their outstanding performance characteristics. The blade is an important part of the aero-engine, and the performance of the blade largely determines the performance of the engine. Intermetallic compound phase γ-TiAl and α 2 -Ti 3 Al-based titanium-aluminum alloys have increasingly become the focus of research due to their high melting point, low density, high elastic modulus, low diffusion coefficient, good oxidation and corrosion resistance, and lower flame retardancy than conventional titanium alloys. The specific elastic modulus and specific strength in a certain temperature range, the specific elastic modulus of TiAl alloy is higher than that of titaniu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J1/02B21J1/06B21J3/00B21J5/02B21K27/00
CPCB21J5/02B21J1/02B21J1/06B21J13/02B21K27/00B21J3/00
Inventor 华林胡志力张清杰
Owner WUHAN UNIV OF TECH
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