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Chemical milling method for titanium alloy precisely-forged blades

A titanium alloy and blade technology is applied in the field of chemical milling of titanium alloy precision forging blades, which can solve the problem of large difference in blade removal amount.

Inactive Publication Date: 2018-09-28
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
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Problems solved by technology

However, during the chemical milling process, when the blade rotates in the chemical milling groove drum, the angular velocity of the different positions of the blade shape is not the same, which leads to a large difference in the removal amount of the blade at different positions

Method used

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0038] A chemical milling method for precision forging blades of titanium alloys comprises the following steps:

[0039] 1) Measurement: Prepare the forged titanium alloy blade, select three sections on the blade that are designed to be tested, and use an inductance meter to measure the thickness of the three uniform points on each section;

[0040] 2) Grouping: compare the thickness of each measurement point with the standard thickness, and group the thickness difference every 0.05mm, that is, the first group is the thickness difference of 0.00mm~0.05mm, and the thickness difference is 0.05mm~0.10mm. The second group, the thickness difference is 0.10mm ~ 0.15mm is the third group, and so on;

[0041] 3) protection: according to the grouping of the previous step, select a certain group of blades, and apply glue to the part with the smallest thickness difference on each blade, and the glue is acid and alkali resistant protective glue;

[0042] 4) Dosing: prepare degreasing age...

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Abstract

The invention relates to a chemical milling method for titanium alloy precisely-forged blades. The chemical milling method comprises the steps that firstly, through measurement and grouping, the placewith the minimum blade thickness difference is protected through an acid-alkali-resistant protective adhesive; and then, each group of the blades are subjected to chemical milling correspondingly, the purpose of uniform margin removal of the blades is effectively achieved, and the profile tolerance and the degree of finish of the blades can meet the technological requirements. Consistency in margin removal is realized, the complex uniform margin removal work after finish forging is ended is avoided, the whole chemical milling protection process and method are simple and easy to control, and the profile tolerance and the degree of finish of the titanium alloy blades are guaranteed.

Description

technical field [0001] The invention relates to a chemical milling method, in particular to a chemical milling method for a titanium alloy precision forging blade. Background technique [0002] During the forging process of titanium alloy blades, due to factors such as deformation at different positions of the blades, inconsistent metal fluidity, and temperature fluctuations, it is impossible for each blade after forging to have exactly the same thickness, and the thickness between each part of each blade and the standard blade Inconsistency, resulting in the profile and finish of the titanium alloy blades not meeting the requirements. The chemical milling is to use chemical corrosion instead of machining or polishing to remove the excess metal and contamination layer on the surface of the blade after final forging to meet the requirements of final contour and surface finish. It is one of the important processes in the production process of titanium alloy precision forging b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/04C23F1/38
CPCC23F1/04C23F1/38
Inventor 冯金波王宏林赵俊玲赵广飞
Owner HARBIN DONGAN ENGINE GRP
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