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Precision forging method of titanium alloy blade

A precision forming and titanium alloy technology, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of long manufacturing cycle, large blade fluctuation, and high manufacturing cost, and achieve low raw material consumption and comprehensive Good performance and long service life

Active Publication Date: 2010-08-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]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 There is a margin of 1-2.5mm, and the misalignment of the blade is generally between 0.3-0.8mm. The fluctuation of the blade during the forming process is relatively large. After forging, it needs to go through CNC machining, polishing and other processes to meet the design requirements. The method makes the processed blades easily deformed, 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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  • Precision forging method of titanium alloy blade
  • Precision forging method of titanium alloy blade
  • Precision forging method of titanium alloy blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Coat the glass lubricant on the surface of the pre-forged blade forging, the thickness of the glass lubricant is 0.3mm, and then heat the blade forging to 50°C below the transformation point of the blade forging, and keep it warm for 15 minutes.

[0028] Use bolts to fix the bearing plate on the lower mold, apply mold lubricant on the mold, place the upper and lower molds on the upper and lower mold bases respectively, and place the blade forgings in the upper and lower molds. There are two reverse arc sections, the reverse arc section of the air intake side starts from the 5mm inside the air intake side of the blade forging, and ends at the mold airfoil profile extending 3mm from the air intake side, and the reverse arc section of the exhaust side The arc section starts at 5mm inside the exhaust edge of the blade forging and ends at the die airfoil profile at the 3mm extension of the exhaust edge. The dimensional accuracy of the gap between the end surface of the impac...

Embodiment 2

[0035] Coat the glass lubricant on the surface of the pre-forged blade forging, the thickness of the glass lubricant is 0.4mm, then heat the blade forging to 40°C below the transformation point of the blade forging, and keep it warm for 25min.

[0036] Use bolts to fix the bearing plate on the lower mold, apply mold lubricant on the mold, place the upper and lower molds on the upper and lower mold bases respectively, and place the blade forgings in the upper and lower molds. There are two reverse arc segments, the reverse arc segment of the air intake side starts from the 4mm inside the air intake edge of the blade forging, and ends at the mold airfoil profile extending 3mm from the air intake edge, and the reverse arc segment of the exhaust edge The arc section starts from 4mm inside the exhaust edge of the blade forging, and ends at the die airfoil profile at the 3mm extension of the exhaust edge. The dimensional accuracy of the gap between the end surface of the impact plat...

Embodiment 3

[0043] Coat the glass lubricant on the surface of the pre-forged blade forging, the thickness of the glass lubricant is 0.5mm, and then heat the blade forging to 30°C below the transformation point of the blade forging, and keep it warm for 30min.

[0044]Use bolts to fix the bearing plate on the lower mold, apply mold lubricant on the mold, place the upper and lower molds on the upper and lower mold bases respectively, and place the blade forgings in the upper and lower molds. There are two reverse arc sections, the reverse arc section of the air inlet side starts from the 3mm inside the air inlet edge of the blade forging, and ends at the mold airfoil profile extending 2mm from the air inlet edge, and the reverse arc section of the exhaust edge The arc segment starts at 3mm inside the exhaust edge of the blade forging, and ends at the die airfoil profile at the 2mm extension of the exhaust edge. The dimensional accuracy of the gap between the end surface of the impact plate ...

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Abstract

The invention relates to a precision forging method of titanium alloy blade. The forging method comprises a finish forging process and a trimming process, wherein the finish forging process comprises the following steps: (1) coating glass lubricant on the surface of a pre-forged blade forging, then heating the blade forging to the forming temperature, and maintaining the temperature for 15-30 minutes; (2) coating die lubricant on dies, respectively placing the upper die and the lower die on an upper die holder and a lower die holder, and arranging the blade forging in the upper die and the lower die; and (3) forging the blade forging by using a screw press based on the dimension requirements. The trimming process comprises the following steps: arranging the finish-forged blade forging in a trimming die, and trimming the blade forging at room temperature. The forging method has the advantages of low raw material consumption, good combination property and long service life of the obtained blade and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to a precision forming and forging method for titanium alloy blades. Background technique [0002] 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 perfo...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J3/00B21J13/02B21J13/03
Inventor 陈晓峰王少刚崔树森韩立夫邰清安史丽坤汪大成郑渠英孔祥伟李治华
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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