CN117778970A - Corrosion-resistant coating process for screw products - Google Patents
Corrosion-resistant coating process for screw products Download PDFInfo
- Publication number
- CN117778970A CN117778970A CN202311859431.9A CN202311859431A CN117778970A CN 117778970 A CN117778970 A CN 117778970A CN 202311859431 A CN202311859431 A CN 202311859431A CN 117778970 A CN117778970 A CN 117778970A
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- CN
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- Prior art keywords
- screw
- substrate
- corrosion
- resistant coating
- coating
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- 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.)
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- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 238000004544 sputter deposition Methods 0.000 claims abstract description 12
- 238000007740 vapor deposition Methods 0.000 claims abstract description 10
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011651 chromium Substances 0.000 abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
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- Physical Vapour Deposition (AREA)
Abstract
The invention provides a corrosion-resistant coating process of screw products, which comprises the following steps: s1, preprocessing a screw substrate to ensure that the surface of the screw substrate is clean and smooth; s2, hanging the screw substrate into an aluminum planting machine for vapor deposition, sputtering a Cr target, and then sputtering an AL target to enable the screw substrate to have a Cr-AL coating. According to the invention, the Cr-AL corrosion-resistant coating is added to the screw product in a vapor deposition mode, so that the corrosion resistance of the screw product is improved, the product can be protected by chromium even if the aluminum coating is damaged, the product can not be rapidly corroded by strong corrosive gas in the environment, the frequency of replacing the screw by a customer cavity opening is greatly shortened, and the service life of the screw is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of screw product coating processes, in particular to a corrosion-resistant coating process for screw products.
Background
The screw products are widely applied to equipment structures of various industries, are influenced by the environment of use scenes, and are required to be made of different materials and have different coating processes so as to meet the long-term use requirements. When the screw products are used in environments with corrosive gases, the screw products are required to have better corrosion resistance, and the method for improving the corrosion resistance of the products generally comprises the following steps: a base material with corrosion resistance is selected, subjected to proper surface treatment, optimized in structure or used as an antirust agent.
In some production equipment, strong corrosive gas (fluorine corrosion) exists in the process cavity, meanwhile, the working temperature in the process cavity reaches 400 ℃, and screw products cannot be used for a long time in the process cavity, so that rust can be corroded quickly. In the prior art, aluminum or aluminum alloy is adhered to a substrate in an aluminum planting mode to form an anti-corrosion layer, aluminum can react with oxygen in air rapidly at high temperature to generate aluminum oxide, namely a composite coating consisting of aluminum and aluminum oxide can be formed on the surface of a product, the aluminum oxide has strong oxidation corrosion resistance, and the composite coating has the advantages of high conductivity, high thermal conductivity, light weight, corrosion resistance and the like.
The aluminum coating is characterized by softer materials, and if the coating is damaged, the product can still be rapidly eroded by strong corrosive gas in the environment, so that the prior art needs to be improved.
Disclosure of Invention
The invention provides a corrosion-resistant coating process of screw products, which is used for solving the problems.
The invention adopts a technical scheme that: the corrosion-resistant coating process for the screw products comprises the following steps:
s1, preprocessing a screw substrate to ensure that the surface of the screw substrate is clean and smooth;
s2, hanging the screw substrate into an aluminum planting machine for vapor deposition, sputtering a Cr target, and then sputtering an AL target to enable the screw substrate to have a Cr-AL coating.
Further, the pretreatment comprises primary cleaning, secondary cleaning and drying, wherein ultrasonic heating and cleaning liquid are adopted to carry out primary cleaning on the screw substrate, ultrasonic pure water is adopted to carry out secondary cleaning on the screw substrate, and an oven is used for drying after the secondary cleaning is completed.
Furthermore, the screw substrate is made of 316 stainless steel or nickel-based materials, and the two materials have certain corrosion resistance and moderate strength.
Further, the vapor deposition is performed under vacuum condition, the temperature condition is 200 ℃, and the vacuum condition is 1.0 x 10 negative square.
Further, the time for sputtering the Cr target in the step S2 is 5-8 minutes, and the time for sputtering the AL target is 18-20 minutes.
Further, the thickness of the Cr-AL coating layer formed in the step S2 was 15. Mu.m.
Further, the thickness of the Cr coating is 2-3 μm.
The corrosion-resistant coating process for the screw products has the beneficial effects that:
1. the Cr-AL corrosion-resistant coating is added to the screw product in a vapor deposition mode, so that the corrosion resistance of the screw product is improved, the product can be protected by chromium even if the aluminum coating is damaged, the product can not be rapidly corroded by strong corrosive gas in the environment, the frequency of replacing the screw by a customer cavity opening is greatly shortened, and the service life of the screw is greatly prolonged.
Drawings
FIG. 1 is a process flow diagram of a corrosion resistant coating for a screw-type product in accordance with a first embodiment of the present invention;
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides a corrosion-resistant coating process for screw products, comprising the following steps:
s1, preparing a screw substrate;
s2, preprocessing a screw substrate, and ensuring the clean and smooth surface of the screw substrate through primary cleaning, secondary cleaning and drying;
s3, carrying out vapor deposition on the screw substrate to form a standard screw with a Cr-AL coating:
s31, 6 target circular arcs are arranged in the aluminum planting machine, wherein 2 target circular arcs are filled with Cr, and 6 target circular arcs are filled with AL;
s32, hanging the screw substrate into an aluminum planting machine;
s33, heating the aluminum planting machine, and vacuumizing to meet the technological requirements;
s34, sputtering a Cr target material by a machine for 5-8 minutes;
s35, sputtering an AL target after the machine for 18-20 minutes;
s36, cooling the machine and keeping vacuum;
s37, opening the furnace after the standby device is lowered to the process required temperature;
s4, checking;
s5, vacuum packaging.
Specifically, the screw substrate is prepared by adopting a 316 stainless steel material, and nickel-based materials can be adopted, wherein both the nickel-based materials and the 316 stainless steel materials have certain corrosion resistance and moderate strength.
The vapor deposition needs to be carried out in a vacuum state, so that the coating deposited on the surface of the screw substrate can be ensured not to be influenced by air-borne gases such as oxygen, nitrogen and the like: the temperature condition was 200 ℃, and the vacuum condition was 1.0 x 10 minus square.
The thickness of the coating is reserved when the screw substrate is prepared, and the thickness of the Cr-AL coating is 15 mu m, wherein the thickness of the Cr coating is 2-3 mu m.
The corrosion-resistant coating process for the screw products has the beneficial effects that:
1. the Cr-AL corrosion-resistant coating is added to the screw product in a vapor deposition mode, so that the corrosion resistance of the screw product is improved, the product can be protected by chromium even if the aluminum coating is damaged, the product can not be rapidly corroded by strong corrosive gas in the environment, the frequency of replacing the screw by a customer cavity opening is greatly shortened, and the service life of the screw is greatly prolonged.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (7)
1. The corrosion-resistant coating process for the screw products is characterized by comprising the following steps of: s1, preprocessing a screw substrate to ensure that the surface of the screw substrate is clean and smooth; s2, hanging the screw substrate into an aluminum planting machine for vapor deposition, sputtering a Cr target, and then sputtering an AL target to enable the screw substrate to have a Cr-AL coating.
2. The corrosion-resistant coating process for screw products according to claim 1, wherein the pretreatment comprises primary cleaning, secondary cleaning and drying, the screw substrate is subjected to primary cleaning by ultrasonic heating and cleaning liquid adding, the screw substrate is subjected to secondary cleaning by ultrasonic pure water, and the screw substrate is dried by an oven after the secondary cleaning is completed.
3. The process of claim 2, wherein the screw substrate is 316 stainless steel or nickel-based.
4. A corrosion resistant coating process for a screw-type product according to any one of claims 1 to 3, wherein said vapor deposition is carried out under vacuum conditions at 200 ℃ and at 1.0 x 10 negative power.
5. The process of claim 4, wherein the time for sputtering the Cr target in step S2 is 5-8 minutes and the time for sputtering the AL target is 18-20 minutes.
6. The process of claim 5, wherein the thickness of the Cr-AL coating formed in step S2 is 15 μm.
7. The process for corrosion resistant coating of a screw-type product according to claim 6, wherein the Cr coating has a thickness of 2-3 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311859431.9A CN117778970A (en) | 2023-12-30 | 2023-12-30 | Corrosion-resistant coating process for screw products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311859431.9A CN117778970A (en) | 2023-12-30 | 2023-12-30 | Corrosion-resistant coating process for screw products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117778970A true CN117778970A (en) | 2024-03-29 |
Family
ID=90390789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311859431.9A Pending CN117778970A (en) | 2023-12-30 | 2023-12-30 | Corrosion-resistant coating process for screw products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117778970A (en) |
-
2023
- 2023-12-30 CN CN202311859431.9A patent/CN117778970A/en active Pending
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