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Forging process of titanium alloy blades

A titanium alloy and blade technology, which is applied to the forging process field of titanium alloy blades, can solve the problems of large fluctuation of blades, long manufacturing cycle, easy deformation of blades, etc., and achieves the effects of simple processing technology, improved forging speed and low cost.

Inactive Publication Date: 2014-03-26
AVIC EXCELLENCE FORGING WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of titanium alloy blades includes billet making, pre-forging, final forging and post-processing. Precision forging is generally formed by a crank press. The entire blade body and tenon have a margin of 1-2.5mm, and the misalignment of the blade is generally Between 0.3 and 0.8mm, the fluctuation of the blade during the forming process is relatively large. After forging, CNC machining, polishing and other processes are required to meet the design requirements. This method makes the processed blade easy to deform and the material utilization rate is relatively low. The manufacturing cycle is long and the manufacturing cost is high. For aviation equipment with relatively high requirements, the blades prepared by the above method often cannot meet the comprehensive performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A forging process of a titanium alloy blade, the process comprising the steps of:

[0016] 1) Spray paint: Spray the glass lubricant on the surface of the titanium alloy blade blank and forging mold, and the coating thickness is 0.1mm.

[0017] 2) Heating: put the billet processed in step 1) into the resistance furnace for heating, the temperature in the resistance furnace is 950°C, and keep it warm for 15 minutes; while heating the billet, preheat the forging mold at the same time, the preheating temperature is 850°C;

[0018] 3) Forging: Forging the titanium alloy blade blank, the pressing speed of the upper mold is 0.15mm / s, until the upper and lower molds are closed, and the titanium alloy blade blank in the mold is taken out;

[0019] 4) Trimming: Place the forged blade forging in the trimming die. The fine cutting die includes upper and lower templates, female dies, male dies and fixed shafts. There are guide posts and guide sleeves between the upper and lower tem...

Embodiment 2

[0022] A forging process of a titanium alloy blade, the process comprising the steps of:

[0023] 1) Spray coating: Spray the glass lubricant on the surface of the titanium alloy blade blank and forging mold, and the coating thickness is 0.2mm.

[0024] 2) Heating: put the billet processed in step 1) into the resistance furnace for heating, the temperature in the resistance furnace is 960°C, and keep it warm for 10 minutes; while heating the billet, preheat the forging mold, the preheating temperature is 860°C;

[0025] 3) Forging: Forging the titanium alloy blade blank, the pressing speed of the upper mold is 0.25mm / s, until the upper and lower molds are closed, and the titanium alloy blade blank in the mold is taken out;

[0026] 4) Trimming: Place the forged blade forging in the trimming die. The fine cutting die includes upper and lower templates, female dies, male dies and fixed shafts. There are guide posts and guide sleeves between the upper and lower templates. Through...

Embodiment 3

[0029] A forging process of a titanium alloy blade, the process comprising the steps of:

[0030] 1) Spray paint: Spray the glass lubricant on the surface of the titanium alloy blade blank and forging mold, and the coating thickness is 0.15mm.

[0031] 2) Heating: put the billet processed in step 1) into the resistance furnace for heating, the temperature in the resistance furnace is 955°C, and keep it warm for 13 minutes; while heating the billet, preheat the forging mold at the same time, the preheating temperature is 855°C;

[0032] 3) Forging: Forging the titanium alloy blade blank, the pressing speed of the upper mold is 0.20mm / s, until the upper and lower molds are closed, and the titanium alloy blade blank in the mold is taken out;

[0033] 4) Trimming: Place the forged blade forging in the trimming die. The fine cutting die includes upper and lower templates, female dies, male dies and fixed shafts. There are guide posts and guide sleeves between the upper and lower te...

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Abstract

The invention discloses a forging process of titanium alloy blades. The forging process comprises the following steps of (1) coating spraying, wherein glass lubricants are sprayed on the surface of a titanium alloy blade blank and the surface of a forging die, and the thickness of the coating is 0.1-0.2mm; (2) heating, wherein the blank processed in the step (1) is put into a resistance furnace to be heated, the temperature in the resistance furnace is 950-960 DEG C, the blank is kept warm for 10-15 minutes, the forging die is pre-heated when the blank is heated, and the pre-heating temperature is 850-860 DEG C; (3) forging, wherein the titanium alloy blade blank is forged, the pressing speed of an upper die is 0.15-0.25mm / s, and the titanium alloy blade blank is taken out after the upper die and a lower die are closed; (4) trimming; (5) postprocessing.

Description

technical field [0001] The invention relates to a forging process, in particular to a forging process of a titanium alloy blade. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21K3/04
Inventor 吴浩
Owner AVIC EXCELLENCE FORGING WUXI
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