A forging process of aero-engine blade based on titanium alloy

An aero-engine, titanium alloy technology, applied in engine components, metal processing equipment, mechanical equipment, etc., can solve the problem of poor product qualification rate and consistency, destroy the surface integrity of the metal streamline continuity, and reduce the mechanical properties of the finished blade. and other problems, to achieve the effect of good consistency, less machining allowance, and improved product qualification rate and consistency

Active Publication Date: 2021-01-01
无锡航亚科技股份有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the existing forging process of titanium alloy aero-engine blades is a common die forging process, it is necessary to remove the machining allowance on the airfoil surface through machining, the product qualification rate and consistency are poor, and the continuity of the metal streamline will also be destroyed and the surface integrity of the finished blade, reducing the technical problems of the mechanical properties of the finished blade, the invention provides a forging process for an aero-engine blade based on titanium alloy, which can realize the precision forging of a titanium alloy aero-engine blade, and make the blade The airfoil size of the forging directly reaches the finished product size without further machining, the product qualification rate is high, the consistency is good, and the continuity of the metal streamline can be retained, the mechanical properties are improved, and the surface integrity and metallographic structure meet the design requirements.

Method used

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  • A forging process of aero-engine blade based on titanium alloy
  • A forging process of aero-engine blade based on titanium alloy
  • A forging process of aero-engine blade based on titanium alloy

Examples

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Effect test

Embodiment 1

[0084] A forging process for an aero-engine blade based on titanium alloy, comprising the following steps:

[0085] Step (1), blanking, the titanium alloy material is Ti-6Al-4V material, the blanking rod diameter is Φ24.5±0.1mm, and the weight is 120±2g;

[0086] Step (2), surface cleaning, using vibration finishing and acid corrosion, during vibration finishing, put the bar into the vibration finishing machine, the finishing time is 2 hours, the frequency is set to 40Hz, and the height of the abrasive medium is not lower than 10cm below the edge of the finishing machine container, choose ceramic media for the finishing abrasive medium, wash the parts with water after the finishing, and remove the finishing liquid remaining on the surface of the parts; when acid corrosion, the polished rods should be cleaned according to the process requirements Put it into the prepared corrosive solution, clean the surface of the bar through the principle of chemical corrosion, remove the res...

Embodiment 2

[0116] A forging process for an aero-engine blade based on titanium alloy, comprising the following steps:

[0117] Step (1), blanking, the titanium alloy material is Ti-6Al-4V material, the blanking rod diameter is Φ24.5±0.1mm, and the weight is 120±2g;

[0118] Step (2), surface cleaning, using vibration finishing and acid corrosion, during vibration finishing, put the bar into the vibration finishing machine, the finishing time is 2 hours, the frequency is set to 50Hz, and the height of the abrasive medium is not lower than 10cm below the edge of the finishing machine container, choose ceramic media for the finishing abrasive medium, wash the parts with water after the finishing, and remove the finishing liquid remaining on the surface of the parts; when acid corrosion, the polished rods should be cleaned according to the process requirements Put it into the prepared corrosive solution, clean the surface of the bar through the principle of chemical corrosion, remove the res...

Embodiment 3

[0151] A forging process for an aero-engine blade based on titanium alloy, comprising the following steps:

[0152] Step (1), blanking, the titanium alloy material is TC8M-1 material, the blanking rod diameter is Φ18±0.1mm, and the weight is 67±2g;

[0153] Step (2), surface cleaning, using vibration finishing and acid corrosion, during vibration finishing, put the bar into the vibration finishing machine, the finishing time is 2 hours, the frequency is set to 45Hz, and the height of the abrasive medium is not lower than 10cm below the edge of the finishing machine container, choose ceramic media for the finishing abrasive medium, wash the parts with water after the finishing, and remove the finishing liquid remaining on the surface of the parts; when acid corrosion, the polished rods should be cleaned according to the process requirements Put it into the prepared corrosive solution, clean the surface of the bar through the principle of chemical corrosion, remove the residual ...

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Abstract

The invention provides a forging technique of an aircraft engine blade based on titanium alloy. The problems that an existing titanium alloy aircraft engine blade forging technique is an ordinary dieforging technique, the machining allowance on a molded surface of a blade body needs to be removed through machining, the product qualification rate and uniformity are poor, the continuity of metal flow lines and the surface integrity of finished blades are damaged, and the mechanical property of the finished blades is reduced are solved. The technique comprises the steps of feeding, surface cleaning, glass lubricant spraying, barstock heating, squeezing, surface cleaning, glass lubricant dip-coating, pre-forging heating, pre-forging, surface cleaning, glass lubricant spraying, finish forgingheating, finish forging, surface cleaning, edge cutting, pre-milling, vibration finishing, twist correction, acid corrosion, heat treatment, vibration finishing, milling and final inspection.

Description

technical field [0001] The invention relates to the field of forging processing of blades, in particular to a forging process of titanium alloy-based aeroengine blades. Background technique [0002] Titanium alloy materials have excellent comprehensive properties, such as low density, high specific strength, good toughness and weldability, and a series of advantages. The density of titanium is 4.51g / cm 3 , between aluminum (2.7g / cm 3 ) and iron (7.6g / cm 3 )between. The specific strength of titanium is higher than that of aluminum alloy and steel, and its toughness is comparable to that of steel. It has been widely used in aerospace, petrochemical and shipbuilding industries. Titanium alloys are mainly used in the manufacture of fans and compressor discs, blades, casings and other parts in aero-engines, as well as various types of fasteners. The use of titanium alloys in the aerospace industry exceeds 70%. Titanium alloys are used to replace structural steel , can reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K3/04B21J5/00B21J3/00
CPCB21J3/00B21J5/002B21K3/04
Inventor 周敏丁立徐红芳杨春原
Owner 无锡航亚科技股份有限公司
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