CN107868945B - A kind of surface treatment method of aluminium alloy bicycle frame - Google Patents
A kind of surface treatment method of aluminium alloy bicycle frame Download PDFInfo
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- CN107868945B CN107868945B CN201711129831.9A CN201711129831A CN107868945B CN 107868945 B CN107868945 B CN 107868945B CN 201711129831 A CN201711129831 A CN 201711129831A CN 107868945 B CN107868945 B CN 107868945B
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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
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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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
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0227—Pretreatment of the material to be coated by cleaning or etching
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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
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/513—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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Abstract
The present invention relates to a kind of surface treatment methods of aluminium alloy bicycle frame, including pretreatment；Surface coating and priming paint and finishing coat spray three steps, using plasma enhancing chemical vapor deposition coating process of the present invention cooperates NaOH- sodium metasilicate ungrease treatment liquid, barium mahogany sulfonate-hydrochloric acid antirust treatment liquid to be surface-treated aluminium alloy bicycle frame, improve mechanical strength, corrosion resistance and the high temperature resistance of vehicle frame overlay coating, thickness of coating is uniform simultaneously, it ensure that the progress of subsequent baking finish process, the hardness for improving vehicle frame baking vanish improves the total quality of cycle frame.
Description
Technical field
The present invention relates to field of metal surface treatment technology more particularly to a kind of surface treatment methods of aluminium alloy bicycle frame.
Background technique
Aluminium alloy is the alloy that other elements are added by base of aluminium and form.Its main feature is that: density is small, and specific strength is high, elasticity
Modulus is big, good heat dissipation, and absorb shock resistance is good, absorbs impact that load-carrying ability is bigger than iron, and the corrosive nature of resistance to organic matter and alkali is good.Due to tool
Have many advantages, such as above-mentioned, aluminium alloy has been widely used in bicycle art at present.
But the own characteristic of the low corrosion current potential due to aluminium alloy, it is applied to the aluminium alloy of bicycle in the prior art
It is substantially all after first carrying out anodized to its surface, using this surface treatment method of the prior art, treated
Aluminum alloy surface protective film mechanical strength is not high, weatherability is poor, and corrosion resistance is poor；The thickness of coating of formation is relatively thin, with aluminium alloy
Surface adhesion force is lower, and mechanical strength is bad, and most non-refractory, coating is easy to fall off in corrosive medium, and anti-corrosion effect is poor,
The hardenability of baking vanish is also influenced simultaneously.
Summary of the invention
In order to solve the above-mentioned technical problem, providing one kind can be improved aluminium alloy bicycle frame surface protection film mechanical strength, increases
The aluminium alloy bicycle frame surface treatment method of strong weatherability and corrosion resistance.
The present invention the following technical schemes are provided:
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Equal sundries are put into ungrease treatment 30-40min in the ungrease treatment liquid that temperature is 40 DEG C, are rinsed well with 40 DEG C of clear water after taking-up,
It is placed in the antirust treatment liquid of room temperature and impregnates 8-10min, dried under the conditions of 60-80 DEG C after cleaning 2min with clear water ultrasonic vibration
It is dry；It can promote the emulsification between ungrease treatment liquid and mineral oil under the conditions of 40 DEG C, then can be incited somebody to action with 40 DEG C of clear water
The mixing liquid on vehicle frame surface completely removes, and is conducive to subsequent acid cleaning process；Vehicle frame surface degreasing favorable rust preventing effect is conducive to subsequent
Filming process can guarantee that coating is uniform, not easily to fall off.
S2, surface coating: aluminium alloy bicycle frame is placed in coating chamber, is filled with mixed gas after vacuumizing, 800 DEG C, penetrate
Electrode plate excites electronics under the conditions of frequency power is 20-30W, and reaction chamber gas is made to become the aluminium of plasma and purity >=99.4%
Block carries out being reacted to nanocrystal on vehicle frame surface, and vehicle frame is then placed in Rapid Circulation Cryo Equipment rapid cooling to 60
DEG C, then it is warming up to 85-90 DEG C, slow cooling to room temperature；Be conducive to improve plated film using rapid cooling-heating-cooling operation
Adhesive force on vehicle frame surface improves the mechanical strength of plated film, enhances anti-corrosion effect.
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 60-80 DEG C of baking 2h in equipment.Due to using water
Property paint vehicle frame is sprayed, rapidly heating will lead to coating cracking, reduce product qualification rate, therefore to the vehicle frame after spraying
It first slowly to preheat, high temperature is dried again after the moisture content in reduction coating, and product spraying effect can be improved.
Further, in the step S1 ungrease treatment liquid be NaOH, sodium metasilicate and pure water mixture, the NaOH,
The mass ratio of sodium metasilicate and pure water is 4:1:20.
Further, antirust treatment liquid is barium mahogany sulfonate, concentration is 36.5% in the step S1 hydrochloric acid and pure water
Mixture, the mass ratio of the barium mahogany sulfonate, hydrochloric acid and pure water is 1:1:25.
Further, the mixed gas in the step S2 includes nitrogen, hydrogen and acetylene, the nitrogen, hydrogen and second
The flow-rate ratio of alkynes is 5:2:3.
The beneficial effects of the present invention are:
(1) cooperated in ungrease treatment liquid using soda ash NaOH and sodium metasilicate, alkalinity can not only be provided, builder is played
Effect, while emulsification can be played to the mineral oil on aluminium alloy bicycle frame surface, the better ungrease treatment of vehicle frame can be mentioned
The deoiling effect on high level frame surface；
(2) in antirust treatment liquid use barium mahogany sulfonate-hydrochloric acid system, barium mahogany sulfonate have excellent moisture resistant,
Salt fog resistance, salt resistance water and water substituting energy can be adsorbed in metal surface and form protective film, prevent to corrosion of metal and corrosion,
And hydrochloric acid can react with rusty scale, impurity layer, by its from vehicle frame surface dissolution, peel off, can not only derusting effect it is good, together
When be also capable of forming protective film, prevent to corrosion of metal and corrosion.
(3) principle of coating process using plasma enhancing chemical vapor deposition, forms uniform nitrogen on vehicle frame surface
Compound nanocrystal, it is higher with the adhesive force on aluminium alloy bicycle frame surface, improve the mechanical strength and high temperature resistance on vehicle frame surface.
Specific embodiment
Embodiment 1
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Equal sundries are put into ungrease treatment 35min in the ungrease treatment liquid that temperature is 40 DEG C, are rinsed well, set with 40 DEG C of clear water after taking-up
8min is impregnated in the antirust treatment liquid of room temperature, is dried under the conditions of 65 DEG C after cleaning 2min with clear water ultrasonic vibration；
S2, surface coating: aluminium alloy bicycle frame is placed in coating chamber, is filled with mixed gas after vacuumizing, 800 DEG C, penetrate
Electrode plate excites electronics under the conditions of frequency power is 20W, and reaction chamber gas is made to become the aluminium block of plasma and purity >=99.4%
It carries out being reacted to nanocrystal on vehicle frame surface, vehicle frame is then placed in Rapid Circulation Cryo Equipment rapid cooling to 60 DEG C,
It is warming up to 85-90 DEG C again, slow cooling to room temperature；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 80 DEG C of baking 2h in equipment.
Embodiment 2
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Equal sundries are put into ungrease treatment 35min in the ungrease treatment liquid that temperature is 40 DEG C, are rinsed well, set with 40 DEG C of clear water after taking-up
10min is impregnated in the antirust treatment liquid of room temperature, is dried under the conditions of 79 DEG C after cleaning 2min with clear water ultrasonic vibration；
S2, surface coating: aluminium alloy bicycle frame is placed in coating chamber, is filled with mixed gas after vacuumizing, 800 DEG C, penetrate
Electrode plate excites electronics under the conditions of frequency power is 30W, and reaction chamber gas is made to become the aluminium block of plasma and purity >=99.4%
It carries out being reacted to nanocrystal on vehicle frame surface, vehicle frame is then placed in Rapid Circulation Cryo Equipment rapid cooling to 60 DEG C,
It is warming up to 85-90 DEG C again, slow cooling to room temperature；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 70 DEG C of baking 2h in equipment.
Embodiment 3
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Equal sundries are put into ungrease treatment 40min in the ungrease treatment liquid that temperature is 40 DEG C, are rinsed well, set with 40 DEG C of clear water after taking-up
8-10min is impregnated in the antirust treatment liquid of room temperature, is dried under the conditions of 80 DEG C after cleaning 2min with clear water ultrasonic vibration；
S2, surface coating: aluminium alloy bicycle frame is placed in coating chamber, is filled with mixed gas after vacuumizing, 800 DEG C, penetrate
Electrode plate excites electronics under the conditions of frequency power is 25W, and reaction chamber gas is made to become the aluminium block of plasma and purity >=99.4%
It carries out being reacted to nanocrystal on vehicle frame surface, vehicle frame is then placed in Rapid Circulation Cryo Equipment rapid cooling to 60 DEG C,
It is warming up to 85-90 DEG C again, slow cooling to room temperature；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 60 DEG C of baking 2h in equipment.
Comparative example 1
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Equal sundries are put into ungrease treatment 35min in the ungrease treatment liquid that temperature is 40 DEG C, are rinsed well, set with 40 DEG C of clear water after taking-up
8min is impregnated in the antirust treatment liquid of room temperature, is dried under the conditions of 65 DEG C after cleaning 2min with clear water ultrasonic vibration；
S2, anodic oxidation: conventional anodization method is used；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 80 DEG C of baking 2h in equipment.
Comparative example 2
A kind of surface treatment method of aluminium alloy bicycle frame, which is characterized in that include the following steps；
S1, pretreatment: it using being cleaned up after traditional ungrease treatment with clear water, is cleaned and is dried with clear water after pickling；
S2, anodic oxidation: conventional anodization method is used；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in baking
Doing can be obtained finished product after being warming up to 160 DEG C of drying 6h again after being first to slowly warm up to 80 DEG C of baking 2h in equipment.
The aluminium alloy bicycle frame handled by above-described embodiment 1-3 and comparative example 1-2 is subjected to performance Indexs measure respectively,
Testing result is as follows:
Table in comparative analysis is it is found that using plasma enhancing chemical vapor deposition coating process cooperates NaOH- sodium metasilicate
Ungrease treatment liquid, barium mahogany sulfonate-hydrochloric acid antirust treatment liquid are surface-treated aluminium alloy bicycle frame, improve the plating of vehicle frame surface
Mechanical strength, corrosion resistance and the high temperature resistance of layer, while thickness of coating is uniform, ensure that subsequent baking finish process into
Row, improves the hardness of vehicle frame baking vanish, improves the total quality of cycle frame.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention'.This invention it is technical
Range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (3)
1. a kind of surface treatment method of aluminium alloy bicycle frame, which comprises the following steps:
S1, pretreatment: aluminium alloy bicycle frame is placed in dirt pocket, and the dust, miscellaneous on vehicle frame surface is removed by high pressure drifting dust air pressure gun
Object is put into ungrease treatment 30-40min in the ungrease treatment liquid that temperature is 40 DEG C, is rinsed well, be placed in 40 DEG C of clear water after taking-up
8-10min is impregnated in the antirust treatment liquid of room temperature, is dried under the conditions of 60-80 DEG C after cleaning 2min with clear water ultrasonic vibration；
S2, surface coating: aluminium alloy bicycle frame is placed in coating chamber, is filled with mixed gas after vacuumizing, in 800 DEG C, radio frequency function
Electrode plate excites electronics under the conditions of rate is 20-30W, and the aluminium block for making reaction chamber gas become plasma and purity >=99.4% exists
Vehicle frame surface carries out being reacted to nanocrystal, and vehicle frame is then placed in Rapid Circulation Cryo Equipment rapid cooling to 60 DEG C, then
It is warming up to 85-90 DEG C, slow cooling to room temperature,
The mixed gas includes nitrogen, hydrogen and acetylene, and the flow-rate ratio of nitrogen, hydrogen and acetylene is 5:2:3；
S3, priming paint and finishing coat spray: being sprayed using high pressure painting equipment to vehicle frame, the vehicle frame after spraying is placed in drying and is set
For middle first it is to slowly warm up to that finished product can be obtained after being warming up to 160 DEG C of drying 6h again after 60-80 DEG C of baking 2h.
2. the surface treatment method of aluminium alloy bicycle frame according to claim 1, it is characterised in that: degreasing in the step S1
Treatment fluid is the mixture of NaOH, sodium metasilicate and pure water, and the mass ratio of the NaOH, sodium metasilicate and pure water are 4:1:20.
3. the surface treatment method of aluminium alloy bicycle frame according to claim 1, it is characterised in that: antirust in the step S1
The mixture for the treatment of fluid is barium mahogany sulfonate, concentration is 36.5% hydrochloric acid and pure water, the barium mahogany sulfonate, hydrochloric acid and pure water
Mass ratio be 1:1:25.
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| CN113680622A (en) * | 2021-08-13 | 2021-11-23 | 河北三厦厨具科技有限公司 | Method for forming decorative protective layer on iron cooker and iron cooker |
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| CN101781755B (en) * | 2010-03-09 | 2011-08-17 | 浙江理工大学 | Method for preparing aluminum-based alloy with Al-Si-O-N wearproof anticorrosive layer |
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