CN112981406A - Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat - Google Patents
Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat Download PDFInfo
- Publication number
- CN112981406A CN112981406A CN202110148853.XA CN202110148853A CN112981406A CN 112981406 A CN112981406 A CN 112981406A CN 202110148853 A CN202110148853 A CN 202110148853A CN 112981406 A CN112981406 A CN 112981406A
- Authority
- CN
- China
- Prior art keywords
- casting
- in718c
- nickel
- corrosion
- bearing seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 57
- 230000007797 corrosion Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 44
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract description 18
- 229910052759 nickel Inorganic materials 0.000 title abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000002791 soaking Methods 0.000 claims abstract description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005530 etching Methods 0.000 claims abstract description 21
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 16
- 238000005488 sandblasting Methods 0.000 claims abstract description 16
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 10
- 231100000719 pollutant Toxicity 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 8
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims abstract description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000004381 surface treatment Methods 0.000 claims description 6
- 238000003486 chemical etching Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 10
- 229910000365 copper sulfate Inorganic materials 0.000 abstract description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 abstract description 9
- 238000005406 washing Methods 0.000 abstract description 9
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 5
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004061 bleaching Methods 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000006386 neutralization reaction Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- -1 iron and zinc Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
Abstract
The invention discloses a surface grain corrosion method of an IN718C nickel-based superalloy aviation bearing seat, which comprises the following steps: polishing the surface of the casting to remove the corrosion layer; sand blasting is carried out to remove pollutants on the surface of the casting, so that the surface of the casting is in an activated state; chemically etching the casting soaked in hot water in a corrosive liquid prepared from copper sulfate pentahydrate, a hydrochloric acid solution and water; washing with cold water in a swinging manner until no corrosive liquid remains on the surface; washing the casting by a high-pressure water gun after neutralizing the casting; carrying out surface detection after soaking and drying in hot water; compared with the existing hydrochloric acid and ferric trichloride ratio corrosion and the hydrofluoric acid and nitric acid bleaching method, the corrosion method using the copper sulfate, hydrochloric acid and water ratio has the advantages of simplified and safe operation steps, more controllable corrosion process parameters, stable process, clear and uniform surface crystal grain display, good production repeatability and low cost, and improves the qualified rate of corrosion production.
Description
Technical Field
The invention relates to the technical field of nickel-based alloy surface treatment, IN particular to a surface grain corrosion method of an IN718C nickel-based superalloy aviation bearing seat.
Background
IN718C is a precipitation strengthening type nickel-based superalloy with a body-centered tetragonal "gamma" phase as a main strengthening phase, has high strength, plasticity, excellent corrosion resistance and good welding performance at the temperature of-253 ℃ to 700 ℃, and is a key material commonly used IN the field of aviation. After the IN718C nickel-base superalloy aviation bearing seat is subjected to solution treatment, a corrosion method is used for showing the grain growth condition IN the solution treatment process. In the traditional corrosion method, hydrochloric acid and ferric trichloride (FeCl3 & 6H2O) are used for corrosion, then hydrofluoric acid and nitric acid are used for proportioning bleaching liquid according to the proportion of 1:1 until crystal grains appear, the hydrofluoric acid and the nitric acid are corrosive strong acids, the hydrofluoric acid is extremely unsafe to human body, the nitric acid is unstable to decomposition when meeting light and heat, the proportioned solution components are unstable, the corrosion effect is difficult to control, and the product qualification rate is reduced.
Disclosure of Invention
The invention mainly aims to provide a surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat, which can effectively solve the problems IN the background art.
In order to achieve the purpose, the invention adopts the technical scheme that: a surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat comprises the following steps:
1) polishing: polishing the surface of the casting to remove a corrosion-resistant layer of 0.3-0.5 mm;
2) surface treatment: removing pollutants on the surface of the casting, ensuring the smoothness of the surface of the casting, and simultaneously generating compressive stress on the surface of the casting, wherein the surface is in an activated state;
3) soaking in hot water: soaking the casting in clean hot water at 45-65 deg.C for at least 15 min;
4) chemical corrosion: preparing an etching solution according to the mixture ratio of 100-140g of blue vitriol, 400-500ml of 37% hydrochloric acid solution and 60-80ml of water, and immersing the casting in the etching solution for chemical etching;
5) and (3) cold water cleaning: putting the casting into clean tap water, and swinging and cleaning for at least 1 minute until no corrosive liquid remains on the surface;
6) neutralizing: putting the cleaned casting into sodium carbonate neutralizing solution with the concentration of 40-50g/L, and soaking for at least 3 minutes at room temperature;
7) and (3) cold water flushing: flushing residual neutralizing liquid of the casting by using a high-pressure water gun;
8) soaking in hot water: the cast is immersed in hot water at 40-60 ℃ for at least 40 seconds, dried and subjected to surface detection.
Preferably, the surface contaminants are removed in the step 2) by using a sand blasting method.
Preferably, the specific operation method of the sand blasting in the step 2) is as follows: selecting a 10mm sand blasting machine nozzle, adjusting the pressure to 0.4-0.6Mpa, selecting sand with 80-120 meshes, and spraying the surface of the casting for 5-6 minutes.
Preferably, the nozzle in the step 2) forms an angle of 45 degrees with the surface of the casting and sprays 40-60mm away from the casting.
Preferably, the etching time in the step 4) is 10 to 12 minutes.
Preferably, compressed air is adopted to stir the corrosive liquid in the whole etching process in the step 4).
Preferably, the etching solution IN the step 4) is suitable for the IN718C nickel-base superalloy.
Preferably, in the step 7), the liquid remaining on the surface of the casting is taken for pH value detection, the pH value is 6.8-7.2, and the liquid is qualified, otherwise, cold water washing is carried out again.
Compared with the prior art, the invention has the following beneficial effects: compared with the existing hydrochloric acid and ferric trichloride ratio corrosion and the hydrofluoric acid and nitric acid bleaching method, the corrosion method using the copper sulfate, hydrochloric acid and water ratio has the advantages of simplified and safe operation steps, more controllable corrosion process parameters, stable process, clear and uniform surface crystal grain display, good production repeatability and low cost, and improves the qualified rate of corrosion production.
Drawings
FIG. 1 is a flow chart of the etching operation of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
FIG. 1 is a flow chart of the surface grain corrosion operation of the IN718C nickel-base superalloy aircraft bearing seat.
Example 1
A surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat comprises the following steps:
1) polishing: polishing the surface of the casting to remove the corrosion-resistant layer of 0.3-0.5mm, and completely removing the corrosion-resistant layer on the surface after heat treatment;
2) surface treatment: removing surface pollutants by adopting a sand blasting method, removing the pollutants on the surface of the casting, ensuring the smoothness of the surface of the casting, and simultaneously enabling the surface of the casting to generate compressive stress and the surface to be in an activated state; the specific operation method of sand blasting comprises the following steps: selecting a 10mm sand blasting machine nozzle, adjusting the pressure to 0.4-0.6Mpa, selecting 80-120 meshes of sand, and spraying the sand on the surface of the casting for 5-6 minutes, wherein the nozzle and the surface of the casting form an angle of 45 degrees and is sprayed 40-60mm away from the casting.
3) Soaking in hot water: soaking the casting in clean hot water with the water temperature of 45-65 ℃ for at least 15 minutes to prepare for enhancing the corrosion effect;
4) chemical corrosion: preparing a corrosive liquid according to the mixture ratio of 100g of copper sulfate pentahydrate, 400ml of 37% hydrochloric acid solution and 60ml of water, immersing the casting IN the corrosive liquid for chemical etching, wherein the etching time is 12 minutes, and stirring the corrosive liquid by using compressed air IN the whole etching process to enhance the corrosion effect, wherein the corrosive liquid is suitable for IN718C nickel-based high-temperature alloy;
among them, copper sulfate itself has weak acidity and corrosion is not strong, but it corrodes by putting it on active metal such as iron, zinc, etc. to cause a substitution reaction, also known as an electrolytic reaction, and the IN718C alloy contains about 20% more Fe, thereby increasing corrosion efficiency and corrosion effect.
5) And (3) cold water cleaning: putting the casting into clean tap water, and swinging and cleaning for at least 1 minute until no corrosive liquid remains on the surface;
6) neutralizing: putting the cleaned casting into sodium carbonate neutralizing solution with the concentration of 40g/L, soaking for at least 3 minutes at room temperature, and neutralizing acid liquor on the surface of the casting;
7) and (3) cold water flushing: washing out residual neutralization solution on the casting by using a high-pressure water gun, detecting the pH value of the residual neutralization solution on the surface of the casting, wherein the pH value is 6.8-7.2, and if the pH value is not qualified, washing with cold water again;
8) soaking in hot water: soaking the casting in hot water of 40-60 deg.C for at least 40 s to help surface grain size display, and performing surface detection after drying.
Example 2
A surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat comprises the following steps:
1) polishing: polishing the surface of the casting to remove the corrosion-resistant layer of 0.3-0.5mm, and completely removing the corrosion-resistant layer on the surface after heat treatment;
2) surface treatment: removing surface pollutants by adopting a sand blasting method, removing the pollutants on the surface of the casting, ensuring the smoothness of the surface of the casting, and simultaneously enabling the surface of the casting to generate compressive stress and the surface to be in an activated state; the specific operation method of sand blasting comprises the following steps: selecting a 10mm sand blasting machine nozzle, adjusting the pressure to 0.4-0.6Mpa, selecting 80-120 meshes of sand, and spraying the sand on the surface of the casting for 5-6 minutes, wherein the nozzle and the surface of the casting form an angle of 45 degrees and is sprayed 40-60mm away from the casting.
3) Soaking in hot water: soaking the casting in clean hot water with the water temperature of 45-65 ℃ for at least 15 minutes to prepare for enhancing the corrosion effect;
4) chemical corrosion: preparing an etching solution according to the mixture ratio of 120g of copper sulfate pentahydrate, 450ml of 37% hydrochloric acid solution and 70ml of water, immersing the casting IN the etching solution for chemical etching, wherein the etching time is 11 minutes, and the etching solution is stirred by using compressed air IN the whole etching process to enhance the etching effect, and is suitable for IN718C nickel-based high-temperature alloy;
copper sulfate is weakly acidic and not strong IN corrosivity, but when the copper sulfate is placed on active metals such as iron and zinc, the copper sulfate can be corroded to generate a replacement reaction, namely an electrolysis reaction, and the IN718C alloy contains more than 20% of Fe, so that the corrosion efficiency and the corrosion effect are improved;
5) and (3) cold water cleaning: putting the casting into clean tap water, and swinging and cleaning for at least 1 minute until no corrosive liquid remains on the surface;
6) neutralizing: putting the cleaned casting into a sodium carbonate neutralizing solution with the concentration of 45g/L, soaking for at least 3 minutes at room temperature, and neutralizing the acid liquor on the surface of the casting;
7) and (3) cold water flushing: washing out residual neutralization solution on the casting by using a high-pressure water gun, detecting the pH value of the residual neutralization solution on the surface of the casting, wherein the pH value is 6.8-7.2, and if the pH value is not qualified, washing with cold water again;
8) soaking in hot water: soaking the casting in hot water of 40-60 deg.C for at least 40 s to help surface grain size display, and performing surface detection after drying.
Example 3
A surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat comprises the following steps:
1) polishing: polishing the surface of the casting to remove the corrosion-resistant layer of 0.3-0.5mm, and completely removing the corrosion-resistant layer on the surface after heat treatment;
2) surface treatment: removing surface pollutants by adopting a sand blasting method, removing the pollutants on the surface of the casting, ensuring the smoothness of the surface of the casting, and simultaneously enabling the surface of the casting to generate compressive stress and the surface to be in an activated state; the specific operation method of sand blasting comprises the following steps: selecting a 10mm sand blasting machine nozzle, adjusting the pressure to 0.4-0.6Mpa, selecting 80-120 meshes of sand, and spraying the sand on the surface of the casting for 5-6 minutes, wherein the nozzle and the surface of the casting form an angle of 45 degrees and is sprayed 40-60mm away from the casting.
3) Soaking in hot water: soaking the casting in clean hot water with the water temperature of 45-65 ℃ for at least 15 minutes to prepare for enhancing the corrosion effect;
4) chemical corrosion: preparing a corrosive liquid according to the mixture ratio of 140g of copper sulfate pentahydrate, 500ml of 37% hydrochloric acid solution and 80ml of water, immersing the casting IN the corrosive liquid for chemical etching, wherein the etching time is 10 minutes, and stirring the corrosive liquid by using compressed air IN the whole etching process to enhance the corrosion effect, wherein the corrosive liquid is suitable for IN718C nickel-based high-temperature alloy;
copper sulfate is weakly acidic and not strong IN corrosivity, but when the copper sulfate is placed on active metals such as iron and zinc, the copper sulfate can be corroded to generate a replacement reaction, namely an electrolysis reaction, and the IN718C alloy contains more than 20% of Fe, so that the corrosion efficiency and the corrosion effect are improved;
5) and (3) cold water cleaning: putting the casting into clean tap water, and swinging and cleaning for at least 1 minute until no corrosive liquid remains on the surface;
6) neutralizing: putting the cleaned casting into a sodium carbonate neutralizing solution with the concentration of 50g/L, soaking for at least 3 minutes at room temperature, and neutralizing the acid liquor on the surface of the casting;
7) and (3) cold water flushing: washing out residual neutralization solution on the casting by using a high-pressure water gun, detecting the pH value of the residual neutralization solution on the surface of the casting, wherein the pH value is 6.8-7.2, and if the pH value is not qualified, washing with cold water again;
8) soaking in hot water: soaking the casting in hot water of 40-60 deg.C for at least 40 s to help surface grain size display, and performing surface detection after drying.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A surface grain corrosion method of an IN718C nickel-base superalloy aviation bearing seat is characterized by comprising the following steps: the method comprises the following steps:
1) polishing: polishing the surface of the casting to remove a corrosion-resistant layer of 0.3-0.5 mm;
2) surface treatment: removing pollutants on the surface of the casting, ensuring the smoothness of the surface of the casting, and simultaneously generating compressive stress on the surface of the casting, wherein the surface is in an activated state;
3) soaking in hot water: soaking the casting in clean hot water at 45-65 deg.C for at least 15 min;
4) chemical corrosion: preparing an etching solution according to the mixture ratio of 100-140g of blue vitriol, 400-500ml of 37% hydrochloric acid solution and 60-80ml of water, and immersing the casting in the etching solution for chemical etching;
5) and (3) cold water cleaning: putting the casting into clean tap water, and swinging and cleaning for at least 1 minute until no corrosive liquid remains on the surface;
6) neutralizing: putting the cleaned casting into sodium carbonate neutralizing solution with the concentration of 40-50g/L, and soaking for at least 3 minutes at room temperature;
7) and (3) cold water flushing: flushing residual neutralizing liquid of the casting by using a high-pressure water gun;
8) soaking in hot water: the cast is immersed in hot water at 40-60 ℃ for at least 40 seconds, dried and subjected to surface detection.
2. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 1, wherein: and in the step 2), surface pollutants are removed by adopting a sand blasting method.
3. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 2, wherein: the specific operation method of the sand blasting in the step 2) comprises the following steps: selecting a 10mm sand blasting machine nozzle, adjusting the pressure to 0.4-0.6Mpa, selecting sand with 80-120 meshes, and spraying the surface of the casting for 5-6 minutes.
4. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 3, wherein: and in the step 2), the nozzle and the surface of the casting form an angle of 45 degrees and is sprayed at a distance of 40-60mm from the casting.
5. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 1, wherein: the etching time in the step 4) is 10-12 minutes.
6. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 1, wherein: and 4) stirring the corrosive liquid by using compressed air in the whole etching process in the step 4).
7. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 1, wherein: the corrosive liquid IN the step 4) is suitable for the IN718C nickel-base superalloy.
8. The surface grain corrosion method of the IN718C nickel-base superalloy aviation bearing seat as claimed IN claim 1, wherein: and 7) taking the residual liquid on the surface of the casting to carry out pH value detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148853.XA CN112981406A (en) | 2021-02-03 | 2021-02-03 | Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148853.XA CN112981406A (en) | 2021-02-03 | 2021-02-03 | Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112981406A true CN112981406A (en) | 2021-06-18 |
Family
ID=76346397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110148853.XA Pending CN112981406A (en) | 2021-02-03 | 2021-02-03 | Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112981406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486708A (en) * | 2022-03-15 | 2022-05-13 | 山东省机械设计研究院 | Environment-friendly acid corrosion method test device |
| CN115537824A (en) * | 2022-10-09 | 2022-12-30 | 广东省科学院新材料研究所 | Solvent for removing coating, method for removing coating and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266449A1 (en) * | 2005-05-24 | 2006-11-30 | Korea Atomic Energy Research Institute | Cerium-containing austenitic nickel-base alloy having enhanced intergranular attack and stress corrosion cracking resistances, and preparation method thereof |
| CN103602985A (en) * | 2013-10-29 | 2014-02-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Chemical milling method used for aeroengine corrosion-resistant single crystal blades |
| CN105018931A (en) * | 2015-07-24 | 2015-11-04 | 金川集团股份有限公司 | GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof |
| CN106908301A (en) * | 2015-12-23 | 2017-06-30 | 上海电气电站设备有限公司 | A kind of etching pit method of clear display nickel-base alloy austenite grain boundary |
| CN112048720A (en) * | 2020-09-18 | 2020-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Nickel-based powder superalloy corrosion solution and corrosion method |
-
2021
- 2021-02-03 CN CN202110148853.XA patent/CN112981406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266449A1 (en) * | 2005-05-24 | 2006-11-30 | Korea Atomic Energy Research Institute | Cerium-containing austenitic nickel-base alloy having enhanced intergranular attack and stress corrosion cracking resistances, and preparation method thereof |
| CN103602985A (en) * | 2013-10-29 | 2014-02-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Chemical milling method used for aeroengine corrosion-resistant single crystal blades |
| CN105018931A (en) * | 2015-07-24 | 2015-11-04 | 金川集团股份有限公司 | GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof |
| CN106908301A (en) * | 2015-12-23 | 2017-06-30 | 上海电气电站设备有限公司 | A kind of etching pit method of clear display nickel-base alloy austenite grain boundary |
| CN112048720A (en) * | 2020-09-18 | 2020-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Nickel-based powder superalloy corrosion solution and corrosion method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486708A (en) * | 2022-03-15 | 2022-05-13 | 山东省机械设计研究院 | Environment-friendly acid corrosion method test device |
| CN115537824A (en) * | 2022-10-09 | 2022-12-30 | 广东省科学院新材料研究所 | Solvent for removing coating, method for removing coating and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112981406A (en) | Surface grain corrosion method of IN718C nickel-based superalloy aviation bearing seat | |
| CN104703760B (en) | The method and sand blasting unit of burnishing surface are produced on aluminum substrate | |
| US4707191A (en) | Pickling process for heat-resistant alloy articles | |
| CN102965675A (en) | Pickling passivation method of stainless steel | |
| CN108796511A (en) | The polishing treatment technique of mental package ornaments | |
| CN105401151B (en) | A kind of iron matrix coating neutrality remover | |
| CN101285196B (en) | Processing technology for surface oxide skin of aviation tubes | |
| CN112609176A (en) | Steel part blackening method | |
| CN102686780B (en) | Pretreatment process for aluminum and high etch cleaner used therein | |
| CN112281167A (en) | Pickling solution for cleaning pipeline and application thereof | |
| CN111778532A (en) | Alkaline zinc-nickel electroplating method for lock ring and embedded ring of automobile fuel tank | |
| CN100398700C (en) | Surface cladding treatment of ferro-manganese aluminium alloy | |
| CN105350005B (en) | A kind of compounding pickle containing passivator and preparation method thereof | |
| CN107675193A (en) | A kind of raw material of aluminum alloy preprocess method | |
| CN112680761B (en) | Nickel-cerium alloy plating annealed copper wire production process | |
| CN102337545A (en) | Rust remover for ultrasonically cleaning metal mould and preparation method thereof | |
| CN101922608B (en) | Nickel-phosphorus alloy plated steel cylinder and plating method thereof | |
| JP2006328516A (en) | Surface treatment method | |
| CN101487123B (en) | Surface treating method for titanium belt and titanium mesh anode | |
| CN1536060A (en) | Multifunctonal degreasing rust-removing cleaning agent and its preparaton method | |
| CN105506536B (en) | A kind of resistance to etching technique of carbon steel frying pan | |
| CN112251785A (en) | Method for processing special passivated surface of stainless steel | |
| CN111962125A (en) | Surface conditioner | |
| CN104389010A (en) | Method of removing hydrogen on surface of workpiece in electroplating process | |
| CN107475732A (en) | A kind of pickling bright technique of corrosion-resistant stainless steel seamless steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |
|
| RJ01 | Rejection of invention patent application after publication |