CN112588541A - Surface treatment process for zinc alloy part - Google Patents
Surface treatment process for zinc alloy part Download PDFInfo
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- CN112588541A CN112588541A CN202011233333.0A CN202011233333A CN112588541A CN 112588541 A CN112588541 A CN 112588541A CN 202011233333 A CN202011233333 A CN 202011233333A CN 112588541 A CN112588541 A CN 112588541A
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
- B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
-
- 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
- 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
- B05D3/06—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 exposure to radiation
- B05D3/061—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 exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/067—Metallic effect
- B05D5/068—Metallic effect achieved by multilayers
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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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
-
- 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
- B05D7/50—Multilayers
- B05D7/51—One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating
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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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
-
- 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
- B05D2202/30—Metallic substrate based on refractory metals (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W)
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a surface treatment process of a zinc alloy part, which comprises the following steps: grinding and polishing the surface; cleaning the surface; forming an adhesion functional layer, namely forming the adhesion functional layer on the surface of the zinc alloy part by copper electroplating or spraying and other processes; and vacuum evaporation, namely performing vacuum aluminum evaporation or indium evaporation on the surface with the functional layer to form a colorful surface layer. The invention can realize the surface treatment of the zinc alloy piece, form the colorful metal effect on the surface of the zinc alloy piece and meet the consumption requirement. Through corrosion resistant layer and priming paint layer cooperation, can satisfy the adhesive force demand that forms the superficial layer, under the impaired state of colorful layer, provide supplementary colour and corrosion resistant protection simultaneously. The permeable wear-resistant layer can play a better wear-resistant protection role for the colorful layer, simultaneously improves the surface gloss effect, and also has the oleophobic and hydrophobic effects.
Description
Technical Field
The invention relates to a surface treatment process for a zinc alloy part, and belongs to the technical field of metal surface treatment.
Background
Many factors need to be comprehensively considered in the selection and application of materials of electronic products, particularly consumer electronic products: strength, weight, thickness, and appearance, etc. Generally, light metal materials are used, and aluminum alloys, magnesium alloys, zinc alloys, and stainless steels are commonly used.
The aluminum alloy material can obtain delicate appearance and colorful color by matching with an anodic oxidation process, thereby obtaining wide application.
Magnesium alloy materials are also used in products such as mobile phones and computers because of their low density and high strength. Compared with the anodic oxidation effect of the aluminum alloy material, the appearance treatment of the magnesium alloy material is determined by the characteristics of the magnesium alloy material and can only be realized by a mode of paint spraying and the like, and the appearance effect is greatly limited.
The zinc alloy and the stainless steel have much higher density than the magnesium alloy/aluminum alloy, and the large-sized parts can greatly increase the weight of the product, so the zinc alloy and the stainless steel are frequently used for small-sized parts with higher strength requirements. Such as the bezel of a cell phone, a battery cover, etc. As the appearance piece, the stainless steel can obtain colorful and exquisite appearance effect by various surface treatment processes such as electrophoresis, physical vapor deposition and the like; the zinc alloy generally only adopts electroplating processes, such as nickel plating, chromium plating and the like, and the appearance effect is generally black and gray. Such as a hinge housing on a notebook computer. The zinc alloy is limited by the technical limit of the electroplating process, the multicolor appearance of the zinc alloy is difficult to realize, the diversified and colorful design of the consumer electronics product cannot be met, and the use of the zinc alloy in the consumer electronics product is seriously influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a surface treatment process for a zinc alloy piece, aiming at the problem that the traditional zinc alloy is limited by the electroplating process technology and cannot meet the requirement of a colorful surface layer.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the surface treatment process of the zinc alloy part comprises the following steps:
s1, grinding and polishing the surface;
s2, cleaning the surface;
s3 attaching the functional layer for molding,
forming an adhesion functional layer on the surface of the zinc alloy part by copper electroplating or spraying and other processes;
s4, vacuum evaporation is carried out,
and performing vacuum aluminum evaporation or indium evaporation on the surface with the functional layer to form a colorful surface layer.
Preferably, in step S4, the plating material is aluminum, and the vacuum degree is 2.0-3.0 × 10-2PA, 22HZ of rotation speed, 12S of air bleeding time delay, 2.2 +/-0.1V of preheating voltage, 20 +/-2S of preheating maintenance, 2.78 +/-0.1V of premelting voltage, 10 +/-3S of premelting time, 3.68 +/-0.1V of evaporating voltage and 14 +/-2S of evaporating time.
Preferably, the thickness of the colorful surface layer is 25-500 nm.
Preferably, in step S3, a copper plating layer is formed by an electro-coppering process, and the thickness of the copper plating layer is 2 to 5 μm.
Preferably, in step S3, an anti-corrosion primer layer is first formed on the surface of the zinc alloy part, and then a primer layer is formed on the anti-corrosion primer layer.
Preferably, in the step S3, the anticorrosion bottom layer is made of a P-29 anticorrosion paint with a viscosity of 8-9S, and the anticorrosion bottom layer with a thickness of 4-7 μm is formed on the surface layer of the zinc alloy part at a baking linear speed of 5 ± 0.1m/min, a leveling time of 2-4 min, and a baking temperature of 55-65 ℃.
Preferably, in the step S3, the primer layer is a copper ion-containing primer, and a primer layer of 16 ± 5 μm is formed on the anti-corrosion primer layer by spraying and ultraviolet curing.
Preferably, the S5 finishing paint is formed to form an abrasion-resistant layer with transparency on the colorful surface layer.
Preferably, in the step S5, the wear-resistant layer is a UV-resistant hydrophobic oil-repellent layer.
The invention has the following beneficial effects:
1. the surface treatment of the zinc alloy piece can be realized, a colorful metal effect is formed on the surface of the zinc alloy piece, and the consumption requirements are met.
2. Through corrosion resistant layer and priming paint layer cooperation, can satisfy the adhesive force demand that forms the superficial layer, under the impaired state of colorful layer, provide supplementary colour and corrosion resistant protection simultaneously.
3. The permeable wear-resistant layer can play a better wear-resistant protection role for the colorful layer, simultaneously improves the surface gloss effect, and also has the oleophobic and hydrophobic effects.
Detailed Description
The invention provides a surface treatment process for a zinc alloy part. The technical solutions of the present invention are described in detail below to make them easier to understand and master.
The surface treatment process of the zinc alloy part comprises the following steps:
firstly, surface grinding and polishing are carried out, a certain polishing grade is generally required to be achieved, polishing belongs to the prior art, and flexible regulation and control can be carried out according to required surface roughness, so that the flatness and the adhesive force of a paint layer or a copper-plated layer are increased.
And cleaning the surface, generally soaking the surface by using a solvent, packaging and soaking the surface by using a filter screen, and removing surface attachments by using ultrasonic assistance.
And then forming an adhesion functional layer, and forming the adhesion functional layer on the surface of the zinc alloy piece by copper electroplating or spraying and other processes.
The adhesion functional layer is mainly used for endowing the bottom layer with functions and meeting the requirements of surface vacuum evaporation, because the vacuum evaporation of aluminum and indium is difficult to carry out on the surface of the traditional zinc alloy.
And finally, carrying out vacuum evaporation, and carrying out vacuum evaporation aluminum plating or vacuum evaporation indium plating on the surface attached with the functional layer to form a colorful surface layer. The evaporation coating forming requirement of the surface colorful surface layer is met through the functional layer.
In one embodiment, the plating material is aluminum, the aluminum material has cost advantage, and the vacuum degree during evaporation is 2.0-3.0 x 10-2PA, 22HZ of rotation speed, 12S of air bleeding time delay, 2.2 +/-0.1V of preheating voltage, 20 +/-2S of preheating maintenance, 2.78 +/-0.1V of premelting voltage, 10 +/-3S of premelting time, 3.68 +/-0.1V of evaporating voltage and 14 +/-2S of evaporating time. Thus, a colorful surface layer can be formed on the adhesion functional layer,
the thickness of the colorful surface layer is generally controlled to be 25-500 nm. The requirement of the beautiful degree of the colorful surface is met.
Example one
And forming a copper plating layer by adopting an electro-coppering process, wherein the thickness of the copper plating layer is 2-5 mu m.
The coating can meet the requirement of evaporation and adhesion of a colorful surface layer, but the bottom color of a copper plating layer is relatively single, and the cost is higher.
Example two
Forming an anticorrosive bottom layer on the surface of the zinc alloy part, and then forming a primer layer on the anticorrosive bottom layer.
Specifically, the anti-corrosion bottom layer is made of P-29 anti-corrosion paint with the viscosity of 8-9S, and the anti-corrosion bottom layer with the thickness of 4-7 microns is formed on the surface layer of the zinc alloy part under the conditions that the baking linear speed is 5 +/-0.1 m/min, the leveling time is 2-4 min and the baking temperature is 55-65 ℃.
The primer layer is copper ion-containing primer, and a primer layer with the thickness of 16 +/-5 microns is formed on the anti-corrosion primer layer in a spraying and ultraviolet curing mode.
Specifically, the anti-corrosion bottom layer can protect the zinc alloy part substrate under the condition that the surface layer is damaged, the substrate can be effectively prevented from being damaged, and meanwhile, the anti-corrosion bottom layer can provide reliable bonding force to meet the bonding operation between the surface of the zinc alloy part and the primer layer.
The priming paint layer selects the priming paint containing copper ions, which can meet the subsequent vacuum evaporation requirements, ensure the molding of the colorful surface layer, provide rich ground colors, provide certain compensating colors under the damage of the colorful surface layer, ensure that the surface also has certain aesthetic feeling and eliminate the abrupt feeling of the exposed area.
EXAMPLE III
And a finishing coat forming step, namely forming the wear-resistant layer with transparency on the colorful surface layer. The wear-resistant layer is a UV-resistant hydrophobic oil-repellent layer.
Surface protection and light permeability demand can be played through the wearing layer promptly for the surface possesses the glossiness more pleasing to the eye, carries out wear-resisting protection to colorful top layer simultaneously, still possesses the hydrophobic oleophobic characteristic.
Through the above description, the surface treatment process for the zinc alloy part can realize the surface treatment of the zinc alloy part, form a colorful metal effect on the surface of the zinc alloy part, and meet the consumption requirements. Through corrosion resistant layer and priming paint layer cooperation, can satisfy the adhesive force demand that forms the superficial layer, under the impaired state of colorful layer, provide supplementary colour and corrosion resistant protection simultaneously. The permeable wear-resistant layer can play a better wear-resistant protection role for the colorful layer, simultaneously improves the surface gloss effect, and also has the oleophobic and hydrophobic effects.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (9)
1. The surface treatment process of the zinc alloy part is characterized by comprising the following steps of:
s1, grinding and polishing the surface;
s2, cleaning the surface;
s3 attaching the functional layer for molding,
forming an adhesion functional layer on the surface of the zinc alloy part by copper electroplating or spraying and other processes;
s4, vacuum evaporation is carried out,
and performing vacuum aluminum evaporation or indium evaporation on the surface with the functional layer to form a colorful surface layer.
2. The surface treatment process for a zinc alloy member according to claim 1, wherein:
in the step S4, the plating material is aluminum, and the vacuum degree is 2.0-3.0 x 10-2PA, 22HZ of rotation speed, 12S of air bleeding time delay, 2.2 +/-0.1V of preheating voltage, 20 +/-2S of preheating maintenance, 2.78 +/-0.1V of premelting voltage, 10 +/-3S of premelting time, 3.68 +/-0.1V of evaporating voltage and 14 +/-2S of evaporating time.
3. The surface treatment process for a zinc alloy member according to claim 2, wherein:
the thickness of the colorful surface layer is 25-500 nm.
4. The surface treatment process for a zinc alloy member according to claim 1, wherein:
in the step S3, a copper plating layer is formed by adopting an electro-coppering process, and the thickness of the copper plating layer is 2-5 μm.
5. The surface treatment process for a zinc alloy member according to claim 1, wherein:
in step S3, an anticorrosive primer layer is first formed on the surface of the zinc alloy member, and a primer layer is then formed on the anticorrosive primer layer.
6. The surface treatment process for a zinc alloy member according to claim 5, wherein:
in the step S3, the anti-corrosion bottom layer is made of P-29 anti-corrosion paint with the viscosity of 8-9S, and the anti-corrosion bottom layer with the thickness of 4-7 microns is formed on the surface layer of the zinc alloy piece under the conditions that the baking linear speed is 5 +/-0.1 m/min, the leveling time is 2-4 min and the baking temperature is 55-65 ℃.
7. The surface treatment process for a zinc alloy member according to claim 5, wherein:
in the step S3, the primer layer is a copper ion-containing primer, and a primer layer with a thickness of 16 ± 5 μm is formed on the anti-corrosion bottom layer by spraying and ultraviolet curing.
8. The surface treatment process for a zinc alloy member according to claim 1, characterized by comprising:
and (5) forming the S5 finish paint, and forming the wear-resistant layer with transparency on the colorful surface layer.
9. The surface treatment process for a zinc alloy member according to claim 1, characterized by comprising:
in the step S5, the wear-resistant layer is a UV-resistant hydrophobic oil-repellent layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011233333.0A CN112588541A (en) | 2020-11-06 | 2020-11-06 | Surface treatment process for zinc alloy part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011233333.0A CN112588541A (en) | 2020-11-06 | 2020-11-06 | Surface treatment process for zinc alloy part |
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| Publication Number | Publication Date |
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| CN112588541A true CN112588541A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011233333.0A Pending CN112588541A (en) | 2020-11-06 | 2020-11-06 | Surface treatment process for zinc alloy part |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413608A (en) * | 2017-09-18 | 2017-12-01 | 龙口博源新科金属涂层有限公司 | A kind of method, production line and its product in metal tube surface coating composite coating |
| CN108588649A (en) * | 2018-04-24 | 2018-09-28 | 佛山市东鹏陶瓷有限公司 | A kind of tap vacuum coating decoration technology |
| CN108745831A (en) * | 2018-06-27 | 2018-11-06 | 广东龙昕科技有限公司 | A kind of positive treatment process of center |
| CN108787395A (en) * | 2018-06-27 | 2018-11-13 | 广东龙昕科技有限公司 | A kind of back side process technique of center |
-
2020
- 2020-11-06 CN CN202011233333.0A patent/CN112588541A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413608A (en) * | 2017-09-18 | 2017-12-01 | 龙口博源新科金属涂层有限公司 | A kind of method, production line and its product in metal tube surface coating composite coating |
| CN108588649A (en) * | 2018-04-24 | 2018-09-28 | 佛山市东鹏陶瓷有限公司 | A kind of tap vacuum coating decoration technology |
| CN108745831A (en) * | 2018-06-27 | 2018-11-06 | 广东龙昕科技有限公司 | A kind of positive treatment process of center |
| CN108787395A (en) * | 2018-06-27 | 2018-11-13 | 广东龙昕科技有限公司 | A kind of back side process technique of center |
Non-Patent Citations (1)
| Title |
|---|
| 王树强: "涂料工艺 第三分册", vol. 2, 化学工业出版社, pages: 493 * |
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