CN115595538B - Preparation method of TiAlN film layer on surface of stainless steel tube radiator - Google Patents
Preparation method of TiAlN film layer on surface of stainless steel tube radiator Download PDFInfo
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- CN115595538B CN115595538B CN202211266047.3A CN202211266047A CN115595538B CN 115595538 B CN115595538 B CN 115595538B CN 202211266047 A CN202211266047 A CN 202211266047A CN 115595538 B CN115595538 B CN 115595538B
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- stainless steel
- steel tube
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- tube radiator
- film
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 66
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 66
- 229910010037 TiAlN Inorganic materials 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000000151 deposition Methods 0.000 claims abstract description 16
- 230000008021 deposition Effects 0.000 claims abstract description 16
- 239000012459 cleaning agent Substances 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007747 plating Methods 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 239000013077 target material Substances 0.000 claims abstract description 6
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 38
- 238000000576 coating method Methods 0.000 claims description 21
- 238000004140 cleaning Methods 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000007733 ion plating Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000007888 film coating Substances 0.000 claims description 7
- 238000009501 film coating Methods 0.000 claims description 7
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000011159 matrix material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
- C23C14/022—Cleaning or etching treatments by means of bombardment with energetic particles or radiation
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/028—Physical treatment to alter the texture of the substrate surface, e.g. grinding, polishing
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention discloses a preparation method of a TiAlN film layer on the surface of a stainless steel tube radiator, comprises adopting an aluminum-titanium alloy target material, wherein the mass ratio of the aluminum target material to the titanium target material is 67+/-0.1 percent, and the total content of the aluminum and the titanium is 33+/-0.1 percent, and is not less than 99.99 percent. The wet glass shot blasting is adopted to pretreat the workpiece, so that the consistency of the surface of the workpiece is improved, and the cleaning agent with citric acid and surfactant as main components is adopted to clean the surface of the workpiece, so that the surface activity is improved. The surface of the workpiece is bombarded and cleaned by adopting 600V voltage and 50% pulse ratio, so that the surface temperature of the workpiece is prevented from being too high. The 2-section type film deposition scheme is adopted, so that the adhesive force of the film and the matrix is improved, and meanwhile, the corrosion resistance and the wear resistance of the film are ensured. The invention can effectively solve the problems of weld cracks, unqualified film adhesion and the like generated in the process of plating the TiAlN film layer on the surface of the stainless steel tube radiator, and ensures that the density of the TiAlN film layer is high and the adhesion is good.
Description
Technical Field
The invention belongs to the technical field of radiator surface treatment, and particularly relates to a method for plating a TiAlN film layer on the surface of a stainless steel tube radiator by multiple arcs.
Background
The multi-arc ion plating technology is an improved method of ion plating technology, which uses arc discharge as a surface coating technology of a metal evaporation source and has the characteristics of high coating speed, high film density, good film adhesion and the like.
After the stainless steel tube radiator is subjected to brazing and argon arc welding processing, a TiAlN film layer is required to be plated on the product in order to improve the appearance quality, corrosion resistance and wear resistance of the surface of the part, and the TiAlN film layer can increase the corrosion resistance and wear resistance of the surface of the stainless steel.
As shown in fig. 1, the product structure of the stainless steel tube radiator is schematically shown, and due to the product structure, the workpiece temperature is too high in the coating process, so that the weld seam is cracked (for example, at a position a in fig. 1) or the structure is damaged due to too large temperature difference between the inside and the outside, and the surface of the workpiece is not clean, so that the adhesion of a film layer is not qualified.
Disclosure of Invention
The invention aims to provide a preparation method of a TiAlN film layer on the surface of a stainless steel tube radiator, which can solve the problems of weld cracks, unqualified film layer adhesive force and the like generated in the process of plating the TiAlN film layer on the surface of the stainless steel tube radiator, and ensures that the density of the plated TiAlN film layer is high and the adhesive force is good.
The invention is realized by the following technical scheme:
The preparation method of the TiAlN film layer on the surface of the stainless steel tube radiator adopts multi-arc ion plating to form the TiAlN film layer on the surface of the stainless steel tube radiator, and adopts an aluminum-titanium alloy target material in the film plating process, wherein the mass ratio of the aluminum to the titanium is 67+/-0.1%, the titanium is 33+/-0.1%, and the total content of the aluminum and the titanium is not less than 99.99%.
Further, the multi-arc ion plating includes pretreatment and plating, wherein:
The pretreatment comprises at least the following two steps,
Step 1, cleaning the surface of a stainless steel tube radiator by adopting wet glass shot blasting;
Step 2, cleaning the surface of the stainless steel tube radiator by adopting a cleaning agent with citric acid and a surfactant as main components;
The coating film comprises a coating film, wherein the coating film comprises,
Bombarding and cleaning the surface of the stainless steel tube radiator by adopting 600V voltage and 50% pulse ratio;
And adopting 2-section type film layer deposition.
Further, the baking treatment is carried out on the stainless steel tube radiator between the step 1 and the step 2 of the pretreatment.
Further, the temperature of the baking treatment is 240+/-10 ℃ and the time is 4+/-0.1 h.
In the step 1 of pretreatment, cleaning the surface of a stainless steel tube radiator to be coated by adopting 220-260 mesh glass beads and 0.4-0.6 MPa;
alternatively, in the step 2 of the pretreatment, the surface of the stainless steel tube radiator is cleaned by ultrasonic cleaning and a cleaning agent containing citric acid and a surfactant as main components is mixed.
Alternatively, the ultrasonic cleaning frequency is 24kHz, the time is 30min, and after the cleaning is finished, the cleaning agent remained on the surface of the stainless steel tube radiator is rinsed by clean water.
Alternatively, the step 2 of the pretreatment further comprises drying and assembling the stainless steel tube radiator sequentially, and coating the surface of the stainless steel tube radiator within 24 hours after the drying is finished.
Alternatively, the drying temperature is 100+ -10deg.C and the time is 0.5+ -0.1 h.
Further, in the film plating, the vacuum degree of the vacuum furnace is reduced to 1X 10 -3 Pa within 1h, and the temperature of the vacuum furnace is increased to 150+/-10 ℃ within 30+/-5 min.
Further, in the process of coating the film,
The voltage of the section 1 film layer is lower than that of the section 2 film layer;
The current during the deposition of the section 1 film layer is equal to the current during the deposition of the section 2 film layer;
The nitrogen flow rate during the 1 st section film layer deposition is larger than the nitrogen flow rate during the 2 nd section film layer deposition, and the nitrogen holding time during the 1 st section film layer deposition is shorter than the nitrogen holding time during the 2 nd section film layer deposition.
The part processed by the method can effectively improve the corrosion resistance and the wear resistance of the stainless steel surface, and prevent the part scrapping problem caused by the weld cracking and the film falling phenomenon of the stainless steel tube radiator in the multi-arc ion plating processing.
Compared with the prior art, the invention has the following characteristics:
(1) The wet glass shot blasting is adopted to pretreat the stainless steel tube radiator, so that the surface consistency of the stainless steel tube radiator is improved, and the problem that dead angles of the stainless steel tube radiator cannot be polished and the surface state of the stainless steel tube radiator is inconsistent due to the fact that mechanical polishing is adopted in the traditional treatment process is solved.
(2) The cleaning agent with citric acid and surfactant as main components is used for cleaning the surface of the stainless steel tube radiator, so that the surface activity is improved.
(3) The stainless steel tube radiator is bombarded and cleaned by adopting 600V voltage and 50% pulse ratio, so that the phenomenon that welding seams on the stainless steel tube radiator are cracked due to overhigh surface temperature of the stainless steel tube radiator is prevented.
(4) The film hardness is low due to high voltage and nitrogen flow in the film coating process, although the film coating process has good adhesive force with a matrix, the abrasion resistance and the corrosion resistance are reduced, in order to ensure the adhesive force, the abrasion resistance and the corrosion resistance of the film, the 2-section film coating scheme is adopted, the relatively low voltage, the relatively high nitrogen flow and the relatively short holding time are adopted in the front section, the adhesive force of the film is ensured, and the relatively high voltage, the relatively small nitrogen flow and the relatively long holding time are adopted in the rear section, so that the abrasion resistance and the corrosion resistance of the film are ensured.
(5) Because the stainless steel tube radiator has a complex structure, the conventional cleaning scheme can not completely clean the greasy dirt on the surface and the inner cavity of the stainless steel tube radiator, and the greasy dirt and the like in the inner cavity can be completely removed by adopting the high-temperature baking scheme.
(6) The surface temperature of the stainless steel tube radiator is controlled to be within 300 ℃ by adjusting the bombardment power, the voltage and the pulse duty ratio, so that the overheating phenomenon of the stainless steel tube radiator is prevented, and the damage to the internal structure of the stainless steel tube radiator is avoided.
(7) The coating method solves the problems of inconsistent appearance quality, weld cracks, unqualified film adhesion and the like generated in the process of multi-arc ion coating TiAlN film on the surface of the stainless steel tube radiator.
Drawings
FIG. 1 is a diagram of a stainless steel tube radiator;
FIG. 2 is a table showing the settings of various parameters in the multi-arc ion plating process.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this invention pertains are included within the scope of the present invention without departing from the above technical idea of the invention.
In this embodiment, the preparation process of the TiAlN film layer on the surface of the stainless steel tube radiator includes: the wet glass shot blasting is adopted to pretreat the stainless steel tube radiator, so that the surface consistency of the stainless steel tube radiator is improved; the cleaning agent with citric acid and surfactant as main components (the proportion of the citric acid and the surfactant is adjusted according to the stainless steel components, and the mass percentage of the citric acid and the surfactant is generally 3:7) is adopted to clean the surface of the stainless steel tube radiator, so that the surface activity is improved; bombarding and cleaning the surface of the stainless steel tube radiator by adopting 600V voltage and 50% pulse ratio to prevent the surface temperature of the stainless steel tube radiator from being too high; and a 2-section type film deposition scheme is adopted, so that the adhesive force between the film and the matrix is improved.
As shown in FIG. 2, the coating process adopts an aluminum-titanium alloy target material with the mass ratio of 67+/-0.1% of aluminum, 33+/-0.1% of titanium and the aluminum-titanium content of not less than 99.99% in the multi-arc ion plating coating process. The specific process flow is as follows:
1. shot blasting: cleaning the surface of a workpiece to be coated by adopting a glass bead material with 220-260 meshes and a pressure of 0.4-0.6 MPa, removing welding oxide skin on the surface of the workpiece, and improving the consistency of the surface state of the workpiece; the wet spraying glass ball scheme is adopted to clean the stainless steel surface, so that the problems that the dead angle of a workpiece cannot be polished and the surface state of the workpiece is consistent, which cannot be solved in the mechanical polishing in the traditional process, are solved;
2. Baking: after shot blasting is completed, carrying out high-temperature baking treatment on the workpiece, wherein the temperature is 240+/-10 ℃ and the time is 4+/-0.1 h, and removing impurities such as greasy dirt and the like on the workpiece; because the stainless steel tube radiator has a complex structure, the conventional cleaning scheme cannot completely clean oil stains of the workpiece, and the surface and inner cavity oil stains and the like can be completely removed by adopting a high-temperature baking scheme (the oil stains of the inner cavity are prevented from seeping out of the surface in the film coating process);
3. cleaning: after the glass spraying of the workpiece is finished, cleaning the surface of the workpiece by using a cleaning agent with citric acid and a surfactant as main components (the mass percentage of the citric acid and the surfactant in the cleaning agent is 3:7), wherein the frequency is 24KHz, and the time is 30min; rinsing the residual cleaning agent on the surface of the workpiece with clear water after the cleaning is finished;
4. and (3) drying: after the cleaning is finished, the surface moisture of the workpiece is dried at the temperature of 100+/-10 ℃ for 0.5+/-0.1 h, and the film plating processing in the furnace is finished within 24 h;
5. And (3) assembling: after the parts are cleaned and dried, the parts are protected and assembled according to the drawing requirements;
6. Coating: ① After the workpiece is put into the furnace, the vacuum degree of the vacuum furnace is reduced to 1 multiplied by 10 -3Pa;② within 1h, and the temperature of the vacuum furnace is increased to 150+/-10 ℃ within 30+/-5 min; ③ Aerating, namely aerating nitrogen with the purity of 99.9% into the furnace body, and ensuring that the vacuum degree of the vacuum furnace is increased to be not more than 9Pa within 10 seconds; ④ etching: raising the voltage from 100V to 600V within 10 min; the power is increased from 1KW to 7KW; at 600V (pulse duty 50%), 7KW for 180min; ⑤ Coating film in the 1 st section: a voltage of 60V; a current 80A; nitrogen flow rate: 950mL/min; maintaining for 70min; ⑥ And 2, coating: the voltage is 80V; a current 80A; nitrogen flow rate: 850mL/min; maintaining for 75min; the bombardment process before coating can generate high temperature on the surface of the workpiece, so that the temperature difference between the outside and the inside of the workpiece is large, the surface temperature of the workpiece is controlled to be within 300 ℃ by adjusting the bombardment power, the voltage and the pulse duty ratio, and the workpiece is prevented from being overheated; the film hardness is low due to high voltage and nitrogen flow in the film coating process, but the adhesive force with a matrix is good, but the abrasion resistance and the corrosion resistance are reduced, in order to ensure the adhesive force, the abrasion resistance and the corrosion resistance of the film, a 2-section film coating scheme is adopted, the parameters of 60V, 80A and 950mL/min of nitrogen flow are adopted in the front section, the adhesive force of the film is ensured, 80V, 80A and 850mL/min of nitrogen flow are adopted in the rear section, and the abrasion resistance and the corrosion resistance of the film are ensured.
7. Discharging: after coating, cooling to below 80 ℃ along with the furnace, and discharging;
The above embodiments are not intended to limit the scope of the present invention, and all modifications, or equivalent substitutions made on the basis of the technical solutions of the present invention should fall within the scope of the present invention.
Claims (8)
1. The preparation method of the TiAlN film layer on the surface of the stainless steel tube radiator is characterized by comprising the following steps of: forming a TiAlN film layer on the surface of the stainless steel tube radiator by adopting multi-arc ion plating, wherein an aluminum-titanium alloy target material is adopted in the film plating process, the mass ratio of the aluminum to the titanium is 67+/-0.1%, the titanium is 33+/-0.1%, and the total content of aluminum and titanium is not less than 99.99%;
the multi-arc ion plating comprises pretreatment and plating, wherein:
The pretreatment comprises at least the following two steps,
Step 1, cleaning the surface of a stainless steel tube radiator by adopting wet glass shot blasting;
Step 2, cleaning the surface of the stainless steel tube radiator by adopting a cleaning agent with citric acid and a surfactant as main components;
The coating film comprises a coating film, wherein the coating film comprises,
Bombarding and cleaning the surface of the stainless steel tube radiator by adopting 600V voltage and 50% pulse ratio, and controlling the surface temperature of the stainless steel tube radiator to be within 300 ℃;
Adopting 2-section film layer deposition;
the voltage of the section 1 film layer is lower than that of the section 2 film layer;
The current during the deposition of the section 1 film layer is equal to the current during the deposition of the section 2 film layer;
The nitrogen flow rate during the 1 st section film layer deposition is larger than the nitrogen flow rate during the 2 nd section film layer deposition, and the nitrogen holding time during the 1 st section film layer deposition is shorter than the nitrogen holding time during the 2 nd section film layer deposition;
The 1 st stage adopts relatively low voltage, relatively high nitrogen flow and relatively short holding time to ensure the film adhesion, and the 2 nd stage adopts relatively high voltage, relatively small nitrogen flow and relatively long holding time to ensure the film wear resistance and corrosion resistance.
2. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: and a baking treatment is carried out on the stainless steel tube radiator between the step 1 and the step 2 of the pretreatment.
3. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: the temperature of the baking treatment is 240+/-10 ℃ and the time is 4+/-0.1 h.
4. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of:
In the step 1 of pretreatment, cleaning the surface of a stainless steel tube radiator to be coated by adopting 220-260 mesh glass beads and 0.4-0.6 MPa;
In the step 2 of pretreatment, the surface of the stainless steel tube radiator is cleaned by adopting an ultrasonic cleaning mode and combining a cleaning agent taking citric acid and a surfactant as main components.
5. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: the ultrasonic cleaning frequency is 24kHz, the time is 30min, and after the cleaning is finished, the cleaning agent remained on the surface of the stainless steel tube radiator is rinsed by clean water.
6. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: and step 2 of pretreatment further comprises drying and assembling the stainless steel tube radiator in sequence, and coating the surface of the stainless steel tube radiator within 24 hours after the drying is finished.
7. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: the drying temperature is 100+/-10 ℃ and the time is 0.5+/-0.1 h.
8. The method for preparing the TiAlN film layer on the surface of the stainless steel tube radiator, which is characterized by comprising the following steps of: during the film coating, the vacuum degree of the vacuum furnace is reduced to 1X 10 -3 Pa within 1h, and the temperature of the vacuum furnace is increased to 150+/-10 ℃ within 30+/-5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211266047.3A CN115595538B (en) | 2022-10-17 | 2022-10-17 | Preparation method of TiAlN film layer on surface of stainless steel tube radiator |
Applications Claiming Priority (1)
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