CN109695856B - Reflector for automobile headlamp and preparation method thereof - Google Patents
Reflector for automobile headlamp and preparation method thereof Download PDFInfo
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- CN109695856B CN109695856B CN201910151578.XA CN201910151578A CN109695856B CN 109695856 B CN109695856 B CN 109695856B CN 201910151578 A CN201910151578 A CN 201910151578A CN 109695856 B CN109695856 B CN 109695856B
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- reflector
- substrate
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- finished
- reflector substrate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
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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
- C23C16/06—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 metallic material
-
- 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
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention belongs to the field of coating, and discloses a preparation method of a reflector for an automobile headlamp, which comprises the following steps: putting the reflector substrate into an ultrasonic cleaning machine for cleaning to obtain a reflector substrate with a clean surface; processing the inner surface of the reflector substrate by a plasma spraying technology to form a bottom coating with a smooth surface on the inner surface; carrying out high-temperature curing treatment on the reflector substrate obtained in the last step for 30min to obtain a semi-finished reflector; and aluminizing the bottom coating of the semi-finished reflector substrate by adopting a plasma chemical vapor deposition technology to obtain the reflector, wherein the reflector has the advantages of excellent structural performance, high bonding strength, long service life, high reflection efficiency and the like.
Description
Technical Field
The invention relates to the technical field of coating, in particular to a reflector for an automobile headlamp and a preparation method thereof.
Background
Generally, an automotive headlamp generally comprises a light source, a reflector and a light distribution lens, the quality of the reflector directly affects the illumination effect of an automobile, and the quality of the illumination quality of the automobile is very important for the safety of the automobile, so that the regulations of all countries in the world all have strict requirements on the illumination of the automobile at present, and the design of the lamp is required to meet the requirements on safety such as light type distribution and the like.
At present, parabolic opposite-sex headlamps and reflectors of free-form surface headlamps are generally adopted by domestic and foreign automobiles, a layer of light-gathering and reflecting material is coated on the surface of an aluminum substrate, and the uniformity, smoothness and reflecting performance of the coating of the light-gathering and reflecting material directly determine the quality of the reflectors, so that the lighting safety degree of the headlamps is determined. The existing preparation method of the reflector with the metal matrix adopts electrolytic polishing preparation, but has high surface roughness of the metal matrix before electrolysis, high preparation cost and low efficiency, and the prepared product has relatively low reflectivity and complex preparation process.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides the reflector for the automobile headlamp made of the aluminum-based material, which has the advantages of excellent structural performance, high strength, high production efficiency and high reflection efficiency and is suitable for being used in a complicated reflecting surface model, and also provides the preparation method of the reflector.
In order to achieve the above purpose, one technical scheme of the invention is as follows:
a method for preparing a reflector for an automobile headlamp comprises the following steps:
s1, putting the reflector substrate into an ultrasonic cleaning machine for cleaning to obtain a reflector substrate with a clean surface;
s2, the inner surface of the reflector substrate is processed by plasma spraying technology, so that a primer layer with a smooth surface is formed on the inner surface;
s3, carrying out high-temperature curing treatment on the reflector substrate obtained in the step S2 for 30min to obtain a semi-finished reflector;
s4, aluminizing the bottom coating of the semi-finished reflector substrate by adopting a plasma chemical vapor deposition technology to obtain the reflector.
Further, before the mirror substrate is put into an ultrasonic washing machine for washing, the method further comprises the following steps:
obtaining a semi-finished reflector substrate of an aluminum substrate by adopting a casting process;
and carrying out surface treatment on the semi-finished reflector by adopting a magnetic grinding process to obtain a reflector matrix.
Further, the step of putting the reflector substrate into an ultrasonic cleaning machine for cleaning to obtain the reflector substrate with a clean surface comprises the following steps:
putting the reflector substrate into an ultrasonic cleaning machine for ultrasonic cleaning, and simultaneously:
and (3) carrying out dust removal treatment on the reflector substrate which is subjected to ultrasonic cleaning by adopting electrostatic dust removal equipment.
Further, the inner surface of the reflector substrate is subjected to plasma spraying treatment, so that a smooth bottom coating layer is formed on the inner surface of the reflector substrate, and the bottom coating layer is a heat insulation coating layer.
Further, the reflector substrate obtained in the step S2 is subjected to a high temperature curing process to obtain a semi-finished reflector, and the temperature of the high temperature curing process is 1200 ℃ to 2000 ℃.
Further, the aluminizing of the bottom coating of the semi-finished reflector substrate by adopting a plasma chemical vapor deposition technology to obtain the reflector comprises the following steps:
putting the semi-finished reflector substrate into a vacuum reaction chamber, and uniformly spraying an active thin film substance containing aluminum ions onto the inner surface of the semi-finished reflector substrate through high-pressure nitrogen to form a reflecting layer;
and further processing the reflecting layer by adopting a pulse laser technology to obtain the reflector.
The other technical scheme of the invention is as follows:
a reflector for an automobile headlamp prepared by a preparation method of the reflector for the automobile headlamp comprises the following steps: the reflector sequentially comprises an aluminum substrate reflector substrate, a bottom coating and an aluminized reflecting layer from outside to inside.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
1. the bottom coating in the embodiment has good heat insulation performance, and can effectively solve the problem of large expansion coefficient of the aluminum substrate reflector substrate, so that the aluminum substrate reflector substrate has good dimensional stability;
2. in the embodiment, a high-temperature curing process is adopted to carry out strict heat treatment on the aluminum substrate reflector substrate and the base coating, so that crystal grains are refined, a compact and uniform substrate is obtained, the internal stress of the aluminum substrate reflector substrate is eliminated, and the bonding strength between the base coating and the aluminum substrate reflector substrate is enhanced.
3. According to the embodiment of the invention, the plasma chemical vapor deposition technology is adopted to carry out aluminizing on the bottom coating of the semi-finished reflector substrate, so that the bonding strength of the reflecting layer and the substrate is effectively improved, and the service life of the reflecting layer and the substrate is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a reflector for an automotive headlamp according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a reflector for an automotive headlamp, the reflector comprising, in order from the outside to the inside, an aluminum substrate reflector base 1, an undercoat layer 2, and an aluminized light-reflecting layer 3; specifically, the preparation method of the reflector for the automobile headlamp comprises the following steps:
s11, obtaining a semi-finished reflector substrate of an aluminum substrate by adopting a casting process;
s12, performing surface treatment on the semi-finished reflector by adopting a magnetic grinding process to obtain a reflector matrix, and specifically, improving the oxidation resistance of the finished reflector and improving the adhesive force of the surface of the finished reflector by adopting the magnetic grinding process.
S13, putting the reflector substrate into an ultrasonic cleaning machine for ultrasonic cleaning, and simultaneously:
s14, adopting an electrostatic dust removal device to remove dust from the reflector matrix which is being subjected to ultrasonic cleaning to obtain the reflector matrix with a clean surface, specifically, the ultrasonic cleaning machine is divided into two parts by the electrostatic dust removal device, impurities and attachments on the surface of the reflector are mainly cleaned in the first part, then static electricity on the surface of the reflector matrix is eliminated through an electrostatic dust removal process to prevent the surface of the reflector matrix from being polluted again, and finally, ultrasonic cleaning is carried out again.
S15, carrying out plasma spraying treatment on the inner surface of the reflector substrate to form a smooth bottom coating on the inner surface; the base coat is a thermal barrier coating.
S16, carrying out high temperature curing treatment on the reflector substrate obtained in the step S12 to obtain a semi-finished reflector, wherein the temperature of the high temperature curing treatment is 1200-2000 ℃, specifically, in the embodiment, the high temperature curing process is adopted to carry out strict heat treatment measures on the aluminum substrate reflector substrate and the base coating layer to refine crystal grains, so as to obtain a compact and uniform substrate, further eliminate the internal stress of the aluminum substrate reflector substrate, and simultaneously strengthen the bonding strength between the base coating layer and the aluminum substrate reflector substrate.
S17, putting the semi-finished reflector substrate into a vacuum reaction chamber, and uniformly spraying an active thin film substance containing aluminum ions onto the inner surface of the semi-finished reflector substrate through high-pressure nitrogen to form a light reflecting layer;
s18, further processing the reflecting layer by adopting a pulse laser technology to obtain the reflector.
Specifically, the plasma chemical vapor deposition technology is to place the semi-finished reflector substrate into a vacuum reaction chamber, wherein the temperature of the vacuum reaction chamber is 600-800 ℃; and finally, the active thin film substance containing aluminum ions is uniformly sprayed on the inner surface of the semi-finished reflector substrate through high-pressure nitrogen, and the bonding strength among the reflector substrate, the bottom coating and the reflective layer is further improved through laser technology treatment, so that the purposes of effectively improving the bonding strength between the reflective layer and the substrate and prolonging the service life of the reflective layer and the substrate are achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A preparation method of a reflector for an automobile headlamp is characterized by comprising the following steps:
s1, putting the reflector substrate into an ultrasonic cleaning machine for cleaning to obtain a reflector substrate with a clean surface;
s2, the inner surface of the reflector substrate is processed by plasma spraying technology, so that a primer layer with a smooth surface is formed on the inner surface;
s3, carrying out high-temperature curing treatment on the reflector substrate obtained in the step S2 for 30min to obtain a semi-finished reflector;
s4, aluminizing the bottom coating of the semi-finished reflector substrate by adopting a plasma chemical vapor deposition technology to obtain the reflector.
2. The method for manufacturing a reflector for an automotive headlamp according to claim 1, wherein the step of cleaning the reflector substrate in an ultrasonic washer further comprises:
obtaining a semi-finished reflector substrate of an aluminum substrate by adopting a casting process;
and carrying out surface treatment on the semi-finished reflector by adopting a magnetic grinding process to obtain a reflector matrix.
3. The method for manufacturing a reflector for an automotive headlamp according to claim 1, wherein the step of washing the reflector substrate in an ultrasonic washer to obtain a surface-cleaned reflector substrate comprises the steps of:
putting the reflector substrate into an ultrasonic cleaning machine for ultrasonic cleaning, and simultaneously:
and (3) carrying out dust removal treatment on the reflector substrate which is subjected to ultrasonic cleaning by adopting electrostatic dust removal equipment.
4. The method of manufacturing a reflector for automotive headlamps according to claim 1, characterized in that the inner surface of the reflector base is plasma-sprayed so that a smooth primer layer is formed on the inner surface, the primer layer being a thermal barrier coating.
5. The method for manufacturing a reflector for an automotive headlamp according to claim 1, wherein the reflector substrate obtained in the step S2 is subjected to a high-temperature curing treatment to obtain a semi-finished reflector, and the temperature of the high-temperature curing treatment is 1200 ℃ to 2000 ℃.
6. The method for manufacturing a reflector for an automotive headlamp according to claim 1, wherein the aluminizing of the primer layer of the semi-finished reflector substrate using a plasma chemical vapor deposition technique to obtain a reflector comprises the steps of:
putting the semi-finished reflector substrate into a vacuum reaction chamber, and uniformly spraying an active thin film substance containing aluminum ions onto the inner surface of the semi-finished reflector substrate through high-pressure nitrogen to form a reflecting layer;
and further processing the reflecting layer by adopting a pulse laser technology to obtain the reflector.
7. A reflector for an automobile headlamp manufactured by the method for manufacturing a reflector for an automobile headlamp as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151578.XA CN109695856B (en) | 2019-02-28 | 2019-02-28 | Reflector for automobile headlamp and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151578.XA CN109695856B (en) | 2019-02-28 | 2019-02-28 | Reflector for automobile headlamp and preparation method thereof |
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| CN109695856A CN109695856A (en) | 2019-04-30 |
| CN109695856B true CN109695856B (en) | 2022-04-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107074640A (en) * | 2014-08-21 | 2017-08-18 | 4Jet精密技术有限两合公司 | Silicate layer is heat-treated using CO 2 pulse laser device |
| CN107500774A (en) * | 2017-09-05 | 2017-12-22 | 西安明科微电子材料有限公司 | A kind of aluminium silicon carbide material speculum preparation method |
| CN108359925A (en) * | 2018-03-19 | 2018-08-03 | 广东省新材料研究所 | Silicon carbide-based fine and close silicon coating of one kind and the preparation method and application thereof, optical mirror |
| CN108469123A (en) * | 2010-12-09 | 2018-08-31 | Vitro可变资本股份有限公司 | Corrosion-resistant solar energy mirror |
| CN109136840A (en) * | 2018-08-06 | 2019-01-04 | 中国科学院光电技术研究所 | A kind of preparation method of vacuum ultraviolet aluminium reflector |
-
2019
- 2019-02-28 CN CN201910151578.XA patent/CN109695856B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469123A (en) * | 2010-12-09 | 2018-08-31 | Vitro可变资本股份有限公司 | Corrosion-resistant solar energy mirror |
| CN107074640A (en) * | 2014-08-21 | 2017-08-18 | 4Jet精密技术有限两合公司 | Silicate layer is heat-treated using CO 2 pulse laser device |
| CN107500774A (en) * | 2017-09-05 | 2017-12-22 | 西安明科微电子材料有限公司 | A kind of aluminium silicon carbide material speculum preparation method |
| CN108359925A (en) * | 2018-03-19 | 2018-08-03 | 广东省新材料研究所 | Silicon carbide-based fine and close silicon coating of one kind and the preparation method and application thereof, optical mirror |
| CN109136840A (en) * | 2018-08-06 | 2019-01-04 | 中国科学院光电技术研究所 | A kind of preparation method of vacuum ultraviolet aluminium reflector |
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| CN109695856A (en) | 2019-04-30 |
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