CN110842365A - Laser surface treatment process for metal base material of shielding material - Google Patents
Laser surface treatment process for metal base material of shielding material Download PDFInfo
- Publication number
- CN110842365A CN110842365A CN201911174947.3A CN201911174947A CN110842365A CN 110842365 A CN110842365 A CN 110842365A CN 201911174947 A CN201911174947 A CN 201911174947A CN 110842365 A CN110842365 A CN 110842365A
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- CN
- China
- Prior art keywords
- metal
- base material
- laser
- metal base
- metal substrate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/162—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
Abstract
The invention provides a laser surface treatment process for a metal substrate of a shielding material, which comprises the following steps: firstly, processing dirt, rust spots and a surface oxide layer on the surface of a metal substrate by using laser equipment; step two, after the metal base material in the step one is cooled to room temperature, coating an acrylic adhesive; step three, drying the metal base material in the step two; fourthly, attaching a composite material layer to the surface of the dried metal substrate; and step five, rolling the metal base material in the step four to finish the treatment of the metal base material. The problems that the metal surface is difficult to clean thoroughly, the working efficiency is low and the cleaning is difficult to be carried out on a specified area in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of shielding material surface treatment, and particularly relates to a shielding material metal substrate laser surface treatment process.
Background
The shielding material is a general name of a metal plate (mesh), a metal box (foil), a metal cover and various special alloy materials for preventing or reducing electromagnetic energy transmission and realizing electromagnetic compatibility. In the conventional shielding materials, metal materials such as copper foil, aluminum foil, and stainless steel are generally used. Although the surface of these materials can effectively reduce the electric resistance, the surface thereof is easily oxidized, thereby increasing the electric resistance.
In the prior art, a chemical cleaning agent is usually adopted to clean the surface of metal, then an antioxidant is smeared on the cleaned metal, and finally drying is carried out. However, the prior art has the following defects:
1. in the prior art, a chemical cleaning agent can only clean a metal surface (the cleaning depth is only limited to the metal surface), the metal surface with a complex structure and a concave part of the metal surface are difficult to clean thoroughly, and a cleaning area cannot be controlled accurately (for example, only a specified area of the metal surface needs to be cleaned, but when the chemical cleaning agent is used for cleaning the metal surface in the prior art, the chemical cleaning agent easily flows to other areas, and the workload is increased).
2. The used chemical cleaning agent causes pollution to the environment, and simultaneously, residual substances can be attached to the surface of the metal, so that the performance of the shielding material is influenced; in addition, the waste generated after the metal surface is treated by using the chemical cleaning agent in the prior art needs to be treated at higher cost, so that the cost generated by treating the metal surface is increased.
3. The existing process is complicated in metal surface cleaning and low in working efficiency.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a laser surface treatment process for a metal substrate made of a shielding material, which solves the problems that the metal surface is difficult to clean thoroughly, especially parts with complex structures are more difficult to clean, and the working efficiency is low in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a laser surface treatment process for a metal substrate of a shielding material comprises the following steps:
firstly, processing dirt, rust spots and a surface oxide layer on the surface of a metal substrate by using laser equipment;
step two, after the metal base material in the step one is cooled to room temperature, coating an acrylic adhesive;
step three, drying the metal base material in the step two;
fourthly, attaching a composite material layer to the surface of the dried metal substrate;
and step five, rolling the metal base material in the step four to finish the treatment of the metal base material.
As a further preferred embodiment, the dust and debris generated when the surface of the substrate is laser-treated is extracted in step one by means of a dust extraction device.
As a further preferred embodiment, the treatment depth of the surface of the metal substrate treated by the laser equipment in the first step is 3-20 um.
As a further preferred embodiment, the coating thickness of the acrylic adhesive in the second step is 5-50 um.
As a further preferred embodiment, the drying speed of the drying oven for drying the metal base material in the third step is 10-30 m/min, and the drying temperature is 30-90 ℃.
As a further preferred embodiment, the composite material in step four is a PET or a metal material.
The invention has the beneficial effects that:
1. according to the invention, the laser equipment is adopted to treat the surface of the metal base material, and the size and the shape of a light spot irradiated on the surface of the metal shielding material by the laser equipment can be adjusted, and the time of laser irradiation on the surface of the metal base material can be accurately controlled, so that the metal base material can be effectively treated aiming at a specified area of the surface of the metal base material, a concave part of the surface or the surface of the base material with a complex structure; especially, the treatment depth of the surface of the metal base material treated by the laser is 3-20 um, so that the cleaning is more thorough.
2. When the laser is adopted to treat the surface of the metal substrate, dirt, rusty spots and an oxide layer are instantly evaporated or stripped, and meanwhile, dust and fragments generated when the surface of the laser is treated are removed by using a dust removing device instead of a chemical cleaning agent used in the prior art, so that the pollution to the environment is effectively prevented, residual substances left on the surface of the metal substrate are avoided, the performance of the metal substrate is not affected, wastes are not generated, and the cost is saved (the cost for treating the wastes is saved). In addition, the surface of the metal base material is cleaned by laser, so that the thickness of the metal base material is not reduced, and the performance of the metal base material is effectively guaranteed.
3. The acrylic acid adhesive is adopted, so that the bonding property, durability and thermal stability of the composite material and the metal base material are effectively improved.
4. Utilize laser equipment to metal substrate surface clearance, convenient and fast has effectually improved work efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a metal shielding material in the present embodiment;
description of the drawings:
11: metal base material 12: acrylic adhesive layer 13: a composite material layer.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1, the present embodiment provides a laser surface treatment process for a metal substrate 11 made of a shielding material, which includes the following steps:
firstly, processing dirt, rust spots and a surface oxide layer on the surface of a metal substrate by using laser equipment;
step two, after the metal base material in the step one is cooled to room temperature, coating an acrylic adhesive;
step three, drying the metal base material in the step two;
fourthly, attaching a composite material layer to the surface of the dried metal substrate;
and step five, rolling the metal base material in the step four to finish the treatment of the metal base material.
In the first step, the laser device uses laser to instantly peel off or evaporate the dirt, rust and surface oxide layer on the surface of the metal substrate 11, so that the thickness of the metal substrate 11 is not reduced, the generated noise is low, and environmental pollution is avoided. Because the laser energy is concentrated, the heating and cooling speed of the surface of the metal base material is high, and the working efficiency is effectively improved. In addition, the laser is adopted to clean the surface of the metal base material 11, so that no waste is generated, the cost caused by waste treatment is avoided, and the cost is saved.
The acrylic adhesive used in the second step has good adhesion, durability, weather resistance and thermal stability, and can effectively bond the metal substrate 11 and the composite material layer 13.
The composite material 13 used in the fourth step is a PET or metal material, which can effectively protect the acrylic adhesive and has good conductive and shielding functions.
Furthermore, in the first step, dust and debris generated when the surface of the substrate is processed by the laser is extracted by using dust extraction equipment.
Furthermore, the laser irradiated by the laser equipment is easy to transmit and guide, so that the surface of the metal shielding material with a complex structure can be cleaned; meanwhile, in the first step, laser equipment utilizes laser to clean the cleaning depth of the surface of the metal shielding material 11 is 3-20 um (the laser intensity is adjusted to realize the adjustment of the laser on the cleaning depth of the surface of the shielding material 11), so that the surface of the metal shielding material can be cleaned more thoroughly.
Furthermore, the thickness of the acrylic adhesive in the second step is 5-50 um, and the acrylic adhesive with different thicknesses can be coated according to the thickness of the metal base material 11, so that the metal base material 11 and the composite material layer are firmly combined.
Further, a row of drying ovens are used for drying the metal base material 11 in the third step, the temperature of each drying oven is different, the drying ovens are arranged in sequence from low temperature to high temperature and then from low temperature, the drying speed is 10-30 m/min, and the drying temperature is 30-90 ℃.
In a word, the size and the shape of a light spot irradiated on the surface of the metal shielding material 11 by laser equipment and the action of laser on the surface of the metal shielding material can be accurately controlled; the surface of the metal shielding material with different shapes can be effectively cleaned; meanwhile, the laser intensity can be adjusted, so that the cleaning depth can reach 3-20 um, and the cleaning is more thorough.
Compared with the prior art, the surface of the metal shielding material 11 is cleaned by laser, so that residual substances on the surface of the metal shielding material 11 are prevented from being left, surface coating can be carried out after short-time cooling, time is saved, the working efficiency is improved, other substances are prevented from falling into the surface coating, and the product performance is effectively improved.
The above embodiments are only preferred embodiments of the present invention, and it should be understood that the above embodiments are only for assisting understanding of the method and the core idea of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A laser surface treatment process for a metal substrate of a shielding material is characterized by comprising the following steps:
firstly, processing dirt, rust spots and a surface oxide layer on the surface of a metal substrate by using laser equipment;
step two, after the metal base material in the step one is cooled to room temperature, coating an acrylic adhesive;
step three, drying the metal base material in the step two;
fourthly, attaching a composite material layer to the surface of the dried metal substrate;
and step five, rolling the metal base material in the step four to finish the treatment of the metal base material.
2. The laser surface treatment process for the metal substrate of the shielding material according to claim 1, wherein: in the first step, dust and debris generated when the surface of the substrate is processed by the laser is extracted by using dust extraction equipment.
3. The laser surface treatment process for the metal substrate of the shielding material according to claim 1, wherein: in the first step, the treatment depth of the surface of the metal base material treated by the laser equipment is 3-20 um.
4. The laser surface treatment process for the metal substrate of the shielding material according to claim 1, wherein: and the coating thickness of the acrylic adhesive in the second step is 5-50 um.
5. The laser surface treatment process for the metal substrate of the shielding material according to claim 1, wherein: and (3) drying the metal base material in the third step by using an oven at a drying speed of 10-30 m/min and at a drying temperature of 30-90 ℃.
6. The laser surface treatment process for the metal substrate of the shielding material according to claim 1, wherein: in the fourth step, the composite material is PET or a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174947.3A CN110842365A (en) | 2019-11-26 | 2019-11-26 | Laser surface treatment process for metal base material of shielding material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174947.3A CN110842365A (en) | 2019-11-26 | 2019-11-26 | Laser surface treatment process for metal base material of shielding material |
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| CN110842365A true CN110842365A (en) | 2020-02-28 |
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| CN201911174947.3A Pending CN110842365A (en) | 2019-11-26 | 2019-11-26 | Laser surface treatment process for metal base material of shielding material |
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Citations (8)
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| CN101115617A (en) * | 2005-02-07 | 2008-01-30 | 帝人杜邦薄膜日本有限公司 | Conductive multilayer film |
| CN101896058A (en) * | 2009-05-22 | 2010-11-24 | 索尼爱立信移动通信日本株式会社 | Electromagnetic shielding method and electromagnetic shielding film |
| CN103144377A (en) * | 2013-03-15 | 2013-06-12 | 松扬电子材料(昆山)有限公司 | Composite electromagnetic-shielding copper clad laminate with heat conduction effect and manufacture method thereof |
| CN103165237A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Halogen-free flame-retardant copper-plastic composite belt and preparation thereof |
| CN204311002U (en) * | 2014-11-27 | 2015-05-06 | 昆山汉品电子有限公司 | The two-sided honed conductive carbon composite of metal base |
| KR101692861B1 (en) * | 2015-05-28 | 2017-01-06 | (주)대한솔루션 | Headlining having heat-shield for vehicle and the method thereof |
| CN109016730A (en) * | 2018-08-22 | 2018-12-18 | 中山市益孚生物科技有限公司 | A kind of suction wave screen covers composite material and its manufacturing method |
| CN110341199A (en) * | 2019-06-06 | 2019-10-18 | 沈阳航空航天大学 | A method of enhancing light alloy and adhesive bonding of composites interface binding intensity |
-
2019
- 2019-11-26 CN CN201911174947.3A patent/CN110842365A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115617A (en) * | 2005-02-07 | 2008-01-30 | 帝人杜邦薄膜日本有限公司 | Conductive multilayer film |
| CN101896058A (en) * | 2009-05-22 | 2010-11-24 | 索尼爱立信移动通信日本株式会社 | Electromagnetic shielding method and electromagnetic shielding film |
| CN103165237A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Halogen-free flame-retardant copper-plastic composite belt and preparation thereof |
| CN103144377A (en) * | 2013-03-15 | 2013-06-12 | 松扬电子材料(昆山)有限公司 | Composite electromagnetic-shielding copper clad laminate with heat conduction effect and manufacture method thereof |
| CN204311002U (en) * | 2014-11-27 | 2015-05-06 | 昆山汉品电子有限公司 | The two-sided honed conductive carbon composite of metal base |
| KR101692861B1 (en) * | 2015-05-28 | 2017-01-06 | (주)대한솔루션 | Headlining having heat-shield for vehicle and the method thereof |
| CN109016730A (en) * | 2018-08-22 | 2018-12-18 | 中山市益孚生物科技有限公司 | A kind of suction wave screen covers composite material and its manufacturing method |
| CN110341199A (en) * | 2019-06-06 | 2019-10-18 | 沈阳航空航天大学 | A method of enhancing light alloy and adhesive bonding of composites interface binding intensity |
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