CN108588718A - A kind of chemical milling method of titanium alloy precision forged blade - Google Patents
A kind of chemical milling method of titanium alloy precision forged blade Download PDFInfo
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- CN108588718A CN108588718A CN201810370366.6A CN201810370366A CN108588718A CN 108588718 A CN108588718 A CN 108588718A CN 201810370366 A CN201810370366 A CN 201810370366A CN 108588718 A CN108588718 A CN 108588718A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
- C23F1/04—Chemical milling
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/38—Alkaline compositions for etching refractory metals
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Invention is related to a kind of chemical milling method of titanium alloy precision forged blade, first by measuring and being grouped, the place minimum to vane thickness difference carries out acid and alkali-resistance protective rubber and protects, then milling is carried out to every group of blade respectively, the purpose that blade uniformly goes amount is effectively achieved so that the profile tolerance and finish of blade meet technological requirement.It is consistent that the present invention realizes removal surplus, avoids complicated surplus after finish-forging and uniformly removes work, entire milling protection process method is simply easy to control, and ensures the profile tolerance and smoothness requirements of titanium alloy blade.
Description
Technical field
The present invention relates to a kind of chemical milling method, especially a kind of chemical milling method of titanium alloy precision forged blade.
Background technology
Titanium alloy blade in forging process due to blade different location deflection, metal fluidity is inconsistent and temperature
The factors such as fluctuation cause the impossible thickness of each blade after forging completely the same, and each position of each blade and standard leaf
Thickness between piece is inconsistent, cannot be met the requirements so as to cause the profile tolerance and finish of titanium alloy blade.And milling is to use
Chemical attack replaces mechanical processing or polishing, to remove blade finish-forging rear surface extra metal and pollution layer, reaches final wheel
The requirement of wide degree and surface smoothness is one of important procedure in titanium alloy precision forged blade production technology.In this way, may be used
To reduce labor intensity, raise labour productivity, reduce cost, and can be to avoid surface stress caused by mechanical processing and polishing
Burn.However during milling, when blade rotates in milling trough roller cylinder, blade shape different location angular speed also differs
Sample so causes different location blade removal amount difference larger.
Invention content
The object of the present invention is to provide a kind of chemical milling methods of titanium alloy precision forged blade to be gone when making titanium alloy blade milling
Except surplus is consistent, avoids complicated surplus after finish-forging and uniformly remove work, entire milling protection process method is simply held
It is easy to control, ensure the profile tolerance and smoothness requirements of titanium alloy blade.
The specific technical solution of the present invention is,
1) it measures：Prepare the titanium alloy blade after forging, chooses three sections of design requirement detection on blade, pass through electricity
Sensibility reciprocal instrument measuring instrument measures the thickness of three positions uniformly put on each section；
2) it is grouped：The thickness of each measurement point is compared with standard thickness, is to divide per 0.05mm to thickness difference
Group, that is, thickness difference is that 0.00mm~0.05mm is first group, and thickness difference is that 0.05mm~0.10mm is second group, and thickness difference is
0.10mm~0.15mm is third group, and so on；
3) it protects：According to the grouping of previous step, a certain group of blade is chosen, to the portion of thickness difference minimum on each blade
Position carries out gluing, and the glue is acid and alkali-resistance protective rubber；
4) match liquid：Degreaser is prepared in degreasing tank, it is a concentration of：Sodium hydroxide:30g/L；Sodium carbonate：40g/L；Phosphoric acid
Sodium：20g/L；Sodium metasilicate：0.75g/L；
Milling agent is prepared in milling slot, it is a concentration of：Nitric acid d=1.4：89~138ml/L；Hydrofluoric acid d=1.1：45
~81ml/L；
5) milling：
It by one group of all blade in the 3) step, is placed in degreasing tank and carries out oil removing, the time is not more than 20 minutes, temperature
Degree is 75 DEG C~95 DEG C；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
Blade is placed in milling slot and carries out milling, milling temperature is 23~27 DEG C, and milling amount is 0.05mm；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
6) dry：Blade is dried, temperature is not less than 80 DEG C, and drying is to blade surface without apparent water droplet.
7) step 3) -5 is repeated) step, protection and milling are carried out to other groups of other blades；
8) final inspection.
Titanium alloy blade is after finish forge, and the thickness difference of each section does not exceed 0.05mm generally on each blade, the present invention
First by measuring and being grouped, blade is divided into several groups by the standard of 0.05mm, milling then is carried out to every group of blade respectively,
Keep the removal amount of every group of blade identical, so that rotor blade at different levels achievees the purpose that homogenize the amount of milling；When using inductance
After measuring instrument progress thickness measure, place progress acid and alkali-resistance protective rubber such as minimum to vane thickness difference protects, then passing through
After milling, blade at this position will it is super under it is poor lead to blade rejection, can effectively avoid this phenomenon by gluing protection occurs.Titanium
Itself has corrosion stability, selects HF as corrosive agent, and effect is to accelerate the corrosion dissolution of titanium, and increasing hydrofluoric acid concentration can be significantly
Milling speed is improved, selects HNO3 as oxidant, main function is to inhibit the generation of oxygen, while improving the bright and clean of milling surface
Degree.During milling, temperature and tank liquor concentration and milling time to tank liquor have carried out effective control, while being aided with leaf
Piece protects, and has effectively achieved the purpose that blade uniformly goes amount so that the profile tolerance and finish of blade meet technological requirement.Cause
This, it is consistent that the present invention realizes removal surplus, avoids complicated surplus after finish-forging and uniformly removes work, entire milling is anti-
Shield process approach is simply easy to control, and ensures the profile tolerance and smoothness requirements of titanium alloy blade.
Specific implementation mode
A kind of chemical milling method of titanium alloy precision forged blade, when making titanium alloy blade milling, removal surplus is consistent, avoids end
Complicated surplus uniformly removes work after forging, and entire milling protection process method is simply easy to control, and ensures titanium alloy leaf
The profile tolerance and smoothness requirements of piece.
The specific technical solution of the present invention is,
1) it measures：Prepare the titanium alloy blade after forging, chooses three sections of design requirement detection on blade, pass through electricity
Sensibility reciprocal instrument measuring instrument measures the thickness of three positions uniformly put on each section；
2) it is grouped：The thickness of each measurement point is compared with standard thickness, is to divide per 0.05mm to thickness difference
Group, that is, thickness difference is that 0.00mm~0.05mm is first group, and thickness difference is that 0.05mm~0.10mm is second group, and thickness difference is
0.10mm~0.15mm is third group, and so on；
3) it protects：According to the grouping of previous step, a certain group of blade is chosen, to the portion of thickness difference minimum on each blade
Position carries out gluing, and the glue is acid and alkali-resistance protective rubber；
4) match liquid：Degreaser is prepared in degreasing tank, it is a concentration of：Sodium hydroxide:30g/L；Sodium carbonate：40g/L；Phosphoric acid
Sodium：20g/L；Sodium metasilicate：0.75g/L；
Milling agent is prepared in milling slot, it is a concentration of：Nitric acid d=1.4：89~138ml/L；Hydrofluoric acid d=1.1：45
~81ml/L；
5) milling：
It by one group of all blade in the 3) step, is placed in degreasing tank and carries out oil removing, the time is not more than 20 minutes, temperature
Degree is 75 DEG C~95 DEG C；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
Blade is placed in milling slot and carries out milling, milling temperature is 23~27 DEG C, and milling amount is 0.05mm；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
6) dry：Blade is dried, temperature is not less than 80 DEG C, and drying is to blade surface without apparent water droplet.
7) step 3) -5 is repeated) step, protection and milling are carried out to other groups of other blades；
8) final inspection.
Specific implementation mode
A kind of chemical milling method of titanium alloy precision forged blade includes the following steps：
1) it measures：Prepare the titanium alloy blade after forging, chooses three sections of design requirement detection on blade, pass through electricity
Sensibility reciprocal instrument measuring instrument measures the thickness of three positions uniformly put on each section；
2) it is grouped：The thickness of each measurement point is compared with standard thickness, is to divide per 0.05mm to thickness difference
Group, that is, thickness difference is that 0.00mm~0.05mm is first group, and thickness difference is that 0.05mm~0.10mm is second group, and thickness difference is
0.10mm~0.15mm is third group, and so on；
3) it protects：According to the grouping of previous step, a certain group of blade is chosen, to the portion of thickness difference minimum on each blade
Position carries out gluing, and the glue is acid and alkali-resistance protective rubber；
4) match liquid：Degreaser is prepared in degreasing tank, it is a concentration of：Sodium hydroxide:30g/L；Sodium carbonate：40g/L；Phosphoric acid
Sodium：20g/L；Sodium metasilicate：0.75g/L；
Milling agent is prepared in milling slot, it is a concentration of：Nitric acid d=1.4：89~138ml/L；Hydrofluoric acid d=1.1：45
~81ml/L；
5) milling：
It by one group of all blade in the 3) step, is placed in degreasing tank and carries out oil removing, the time is not more than 20 minutes, temperature
Degree is 75 DEG C~95 DEG C；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
Blade is placed in milling slot and carries out milling, milling temperature is 23~27 DEG C, and milling amount is 0.05mm；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
6) dry：Blade is dried, temperature is not less than 80 DEG C, and drying is to blade surface without apparent water droplet.
7) step 3) -5 is repeated) step, protection and milling are carried out to other groups of other blades；
8) final inspection.
Claims (1)
1. a kind of chemical milling method of titanium alloy precision forged blade, which is characterized in that the method includes the following steps：
1) it measures：Prepare the titanium alloy blade after forging, chooses three sections of design requirement detection on blade, pass through inductance value
Instrument measuring instrument measures the thickness of three positions uniformly put on each section；
2) it is grouped：The thickness of each measurement point is compared with standard thickness, is to be grouped per 0.05mm to thickness difference,
That is, it is first group that thickness difference, which is 0.00mm~0.05mm, thickness difference is that 0.05mm~0.10mm is second group, and thickness difference is
0.10mm~0.15mm is third group, and so on；
3) it protects：According to the grouping of previous step, choose a certain group of blade, to the position of thickness difference minimum on each blade into
Row gluing, the glue are acid and alkali-resistance protective rubber；
4) match liquid：Degreaser is prepared in degreasing tank, it is a concentration of：Sodium hydroxide:30g/L；Sodium carbonate：40g/L；Sodium phosphate：
20g/L；Sodium metasilicate：0.75g/L；
Milling agent is prepared in milling slot, it is a concentration of：Nitric acid d=1.4：89~138ml/L；Hydrofluoric acid d=1.1：45~
81ml/L；
5) milling：
It by one group of all blade in the 3) step, is placed in degreasing tank and carries out oil removing, the time is not more than 20 minutes, and temperature is
75 DEG C~95 DEG C；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
Blade is placed in milling slot and carries out milling, milling temperature is 23~27 DEG C, and milling amount is 0.05mm；
Blade is taken out, flowing water is carried out and washes, the time is not less than 1 minute, and temperature is room temperature；
Ion washing is carried out, the time is not less than 1 minute, and temperature is room temperature；
6) dry：Blade is dried, temperature is not less than 80 DEG C, and drying is to blade surface without apparent water droplet.
7) step 3) -5 is repeated) step, protection and milling are carried out to other groups of other blades；
8) final inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370366.6A CN108588718A (en) | 2018-04-23 | 2018-04-23 | A kind of chemical milling method of titanium alloy precision forged blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370366.6A CN108588718A (en) | 2018-04-23 | 2018-04-23 | A kind of chemical milling method of titanium alloy precision forged blade |
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| CN108588718A true CN108588718A (en) | 2018-09-28 |
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ID=63614291
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835760A (en) * | 2019-11-28 | 2020-02-25 | 陕西斯坦特生物科技有限公司 | Chemical milling method for stainless steel precision forging blade |
| CN111774814A (en) * | 2020-06-27 | 2020-10-16 | 上海航天智能装备有限公司 | Method for processing inner and outer grids of rocket short-shell wall plate |
| CN114112610A (en) * | 2021-11-29 | 2022-03-01 | 江苏科技大学 | Rapid preparation method of metallographic structure of magnesium and magnesium alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835760A (en) * | 2019-11-28 | 2020-02-25 | 陕西斯坦特生物科技有限公司 | Chemical milling method for stainless steel precision forging blade |
| CN111774814A (en) * | 2020-06-27 | 2020-10-16 | 上海航天智能装备有限公司 | Method for processing inner and outer grids of rocket short-shell wall plate |
| CN111774814B (en) * | 2020-06-27 | 2022-08-16 | 上海航天智能装备有限公司 | Method for processing inner and outer grids of rocket short-shell wall plate |
| CN114112610A (en) * | 2021-11-29 | 2022-03-01 | 江苏科技大学 | Rapid preparation method of metallographic structure of magnesium and magnesium alloy |
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