CN107479328A - The production method and process units of pre-coating photosensitive glue magnesium version - Google Patents
The production method and process units of pre-coating photosensitive glue magnesium version Download PDFInfo
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- CN107479328A CN107479328A CN201710667952.2A CN201710667952A CN107479328A CN 107479328 A CN107479328 A CN 107479328A CN 201710667952 A CN201710667952 A CN 201710667952A CN 107479328 A CN107479328 A CN 107479328A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/092—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by backside coating or layers, by lubricating-slip layers or means, by oxygen barrier layers or by stripping-release layers or means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- General Physics & Mathematics (AREA)
- Printing Plates And Materials Therefor (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention discloses a kind of pre-coating photosensitive glue magnesium version production technology and equipments.Described magnesium alloy uses the magnesium alloy plate of the fine-grained AZ31 B trades mark, and base material Mn, Ca content are proposed to limit；Concrete technology flow process is that the flows such as sheet shearing, timeliness, sanding, cleaning, drying, drying, coating, heating and thermal insulation, sanding, cleaning, drying, surface treatment, drying, coating, heating and thermal insulation, standing, overlay film are made；The production equipment includes：Hydraulic shear, sanding unit, cleaning drying machine, overcoat coating roller, photoresists coating roller, hot air circulation drying oven, laminating machine etc..
Description
Technical field
The present invention relates to a kind of production method and process units of pre-coating photosensitive glue magnesium version, belong to nonferrous materials and print
Brush plate-making field.
Background technology
Pre-coating photosensitive glue magnesium version is also referred to as magnesium version.Currently, print field has extensive demand to magnesium version, and demand is in urgency
Play increases.In fact, magnesium alloy plate begins to widely apply in print field before 40 years, is concentrated mainly on American-European countries,
The country is always based on copperplate, photo zincography, and reason is the domestic special-purpose board that can not be produced always needed for plate making, and import magnesium
Version price remains high again.But the destruction of copperplate, photo zincography to environment is very serious, while does not all have magnesium version in performance in every respect
It is good, therefore with domestic technique progress, market starts to engender magnesium version, increasing copperplate, photo zincography are substituted by magnesium version,
If these copperplates, photo zincography are all substituted for into magnesium version, annual magnesium version demand will be measured more than 7000 tons.
Print field is concentrated mainly on gold stamping, embossing field, that is, magnesium alloy etched plate to the demand of magnesium version.Magnesium version is rotten
Erosion process be divided into printing down, start an edition, pickling, several steps such as alkali cleaning.Finished product after processing, which can be arranged on gilding press, directly to be used.
Before 40 years, Magnesium Elektro (Erie can Chuan Mei industry group) company just starts to produce magnesium alloy etched plate.Due to
Photo zincography, copperplate produce a large amount of waste liquids in lithography process, and content of beary metal is high, and environmental pollution especially severe, American-European countries exists
Print field instead of photo zincography, copperplate with magnesium version completely.
Magnesium version is compared to the advantage of photo zincography, copperplate：(1) make a plate the time：The mask-making technology of gold stamping version is substantially similar, main
Want difference be embodied in etching the used time on, in etched pattern, require etch depth identical in the case of, magnesium version used time 5min, photo zincography
Used time 25min, copperplate is more than 30min；(2) hardness：Hardness is to weigh the important technological parameters of gold stamping version, when below 50 DEG C,
Magnesium plate Brinell hardness 70, zine plate 60, copper coin 95, when sheet material is heated to 100 DEG C, magnesium plate hardness 65, zine plate 30, copper coin 88.Can
To find out that magnesium version firmness change is minimum when reaching gold stamping required temperature.So directly influence printing quantity, the same terms
Under, magnesium version and copperplate printing amount are all more than 200,000 times, and photo zincography is within 50,000 times；(3) bronzing effect：Magnesium alloy etched plate
After plate-making, the gradient is suitable, sharp edges, hardness are high, and heats in ironed production process that fast, cooling is fast, it is gold stamping after hold
It is very bright to print thing surface, it is identical with copperplate effect, considerably beyond photo zincography；(4) cost：In same homalographic, condition of equivalent thickness, equal
In the case of it is required that, 30% is reduced than photo zincography cost using magnesium version, 70% is reduced than copperplate.In gold stamping production process, magnesium version
Production cost than photo zincography, copperplate will also reduce by 10%.(5) environmental protection aspect：Photo zincography, copperplate are produced in lithography process rich in weight
A large amount of waste liquids of metal ion, can not be reclaimed, environmental pollution especially severe, and magnesium is generally acknowledged light metal, to human body, environment
It is harmless, while rich content is a kind of resource of great market potential in the earth's crust, seawater.
Domestic Resources, environmental problem are extremely serious at present, and the heavily contaminated such as photo zincography, copperplate mode of printing is just progressively eliminated,
And the magnesium version plate-making technology of new green environment protection is still immature, studies and promote magnesium alloy etching board production technology and give birth to accordingly
Production equipment is task very urgent at present.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of production method of pre-coating photosensitive glue magnesium version and
Process units.
The present invention is achieved by the following technical solutions：
In a first aspect, the invention provides a kind of production method of pre-coating photosensitive glue magnesium version, it comprises the following steps：
Magnesium alloy plate shearing, Ageing Treatment, first time sanding, first time cleaning, drying, for the first time drying, coating protection
Layer, first time heating and thermal insulation, second of sanding, surface microprocessor, second of cleaning, drying, second dry, coating photoresists,
Second of heating and thermal insulation, standing, overlay film.
For the production technology of magnesium version, the design parameters of associated operating steps is explained as follows：
1) shear：
Magnesium alloy plate and belt after aligning is sheared to required size, edge burr of polishing.
2) Ageing Treatment：
Required sheet material is positioned in aging furnace, uniformly applies a certain size even distributed force thereon, temperature rises to 250~
300 DEG C, it is incubated 4~5h, afterwards furnace cooling.After overaging, plank internal stress, stable sheet material shape can obviously improve.
3) sanding：
To remove magnesium plate surface oxide layer, the excellent magnesium plate to be coated of surface property is obtained, by magnesium alloy plate two sides through sand
Ray machine sanding, after a sanding, the surface roughness of magnesium plate two should be less than Ra1.0.Coarse sand band is first used during actual sanding by magnesium plate surface
Sand is to close to required thickness, washed ore afterwards.Magnesium plate surface quality has a direct impact to the adhesion of protective coating.
4) cleaning, drying：
Large quantity of moisture be present in the magnesium alloy plate surface after sanding, magnesium alloy fast erosion and magnesium plate surface formed bits shape
Thing, have a strong impact on coating adhesion.Therefore, the magnesium plate after sanding need to immediately enter cleaning drying machine and be cleaned, be dried, drying
Temperature is set as 120~150 DEG C.
5) dry：
There is moisture not distribute inside magnesium plate after drying, because of high temperature film layer can be made to form many gas in drying course
Hole, coating performance is influenceed, the magnesium plate after drying is positioned over into 3~5h of dustless, dry room drying can solve this problem.
6) overcoat is applied：
Deployed protective rubber is uniformly applied to magnesium plate surface with coating roller, the viscosity and coating roller for controlling glue are pressed against
Rod pressure, make thicknesses of layers control between for 15~30 μm.
7) heating and thermal insulation：
The magnesium plate of coated overcoat is stood into 15~30min, magnesium plate is put into drying oven after protective rubber nature levelling
Dried, drying temperature and time the protective rubber technique initialization selected by.
8) secondary sanding：
After protective rubber drying, magnesium alloy photosensitive glue surface to be coated needs sanding again by air corrosion, by the face with 600 mesh
Above abrasive band carries out secondary sanding, and final roughness need to reach within Ra0.6 μm.
9) it is surface-treated：
To eliminate magnesium plate sanding surface vestige, photosensitive layer adhesive force is improved, micro- corruption can be carried out to magnesium alloy plate surface
Erosion is handled.Corrosive liquid is configured according to concentrated sulfuric acid 7.5mL/L, ammonium acid fluoride 3.2g/L, additive 10g/L ratio, stirring
Magnesium alloy plate is put into after uniformly, soaks 20~30s.
10) cleaning, drying, drying：
By after microcorrosion magnesium alloy plate repeat (4), (5) step, to photoresists face to be coated carry out cleaning, drying and
Dry, water for cleaning can use running water, without chip in water.
11) photoresists are applied：
Coating light sensitive layer is core procedure prepared by magnesium version, and this operation need to carry out in darkroom, avoids natural light and in vain
Illumination is entered, and can be used feux rouges, gold-tinted, by photosensitive-ink after preparation-stirring-filtering-standing, be passed through photoresists roller coating
For machine by photosensitive-ink even application on magnesium alloy plate surface, it is 16~25 μm to control coating layer thickness.
12) dry：
According to photoresists technological requirement, drying temperature, time are set, carries out drying operation, to ensure photoresists levelling
Time and drying temperature are consistent, using tunnel-type drying furnace.
13) stand：
The mode of photoresists generally use low temperature drying, light sensitive layer and magnesium plate adhesion are weak, need to be by magnesium alloy after coating
Etched plate stands 24h or so in darkroom.
14) overlay film：
After standing terminates, light sensitive layer is covered with black plastic film, to prevent accidental exposure.
Preferably, the trade mark of the magnesium alloy plate is AZ32B.
Preferably, the method for the Ageing Treatment is that magnesium alloy plate is placed in aging furnace, along magnesium alloy plate
The thickness direction of material applies well-distributed pressure 103~104Pa, temperature rise to 250~300 DEG C, are incubated 2~3h., can after overaging
It is obviously improved plank internal stress, stable sheet material shape.
Preferably, the surface roughness Ra of the magnesium alloy plate after the first time sanding is less than 1.0, described the
Surface roughness Ra after secondary sanding is less than 0.6.Coarse sand band is first used during actual sanding by magnesium plate surface sand to the thickness needed for
Spend, afterwards washed ore.Magnesium plate surface quality has a direct impact to the adhesion of protective coating.
Preferably, the method for the coating overcoat is roller coating, and the thickness of overcoat is 15~30 μm.
Preferably, the corrosive liquid of the surface microprocessor is the mixed of the concentrated sulfuric acid, ammonium acid fluoride and organic inhibitor
Compound, the volume fraction of the concentrated sulfuric acid are 7.5mL/L, and the concentration of the ammonium acid fluoride is 3.2g/L, the organic inhibitor
Concentration is according to concrete model dosage 5g/L~10g/L, microcorrosion 20~30s of processing time.
Preferably, the method for the coating photoresists is roller coating, and the thickness of photoresists is 16~25 μm.
Second aspect, present invention also offers a kind of pre-coating photosensitive applied to foregoing pre-coating photosensitive glue magnesium version production method
The production system of glue magnesium version, it include hydraulic shear, sanding unit, cleaning drying machine, overcoat coating roller, photoresists coating roller,
Photoresists drying oven, protective rubber drying oven, laminating machine, the sanding unit includes some sanders linearly arranged, some
The abrasive band mesh number of the sander increases successively from front to back；The overcoat coating roller is complete accurate double roller coating roller；It is described
Photoresists coating roller is complete accurate double roller coating roller；The protective rubber drying oven is hot air circulation casing drying oven；It is described photosensitive
Glue drying oven is tunnel-type drying furnace.
Described sanding unit is the belt sander with automatic feed function, and be arranged along a straight line each sanding of some sanders
Machine directly can form an automatic sanding production line by being connected for transmission, and sander abrasive band mesh number is arranged from low to high from front to back
Row, abrasive band drafts and abrasive band rotating speed can conveniently be set by human-computer interaction interface, when abrasive band mesh number is more than or equal to 600 mesh,
Abrasive band support roller is using big resilient support roller.
The protective rubber coating roller is more than 60HBW using complete accurate double roller coating roller, front and rear uniform rubber roll using hardness
Optical cement roller, coating roller up and down roll gap spacing accurately show that each roller rotating speed passes through variable-frequency electric by infrared ray distance meter
Machine accurately controls.
For the photoresists coating roller using complete accurate double roller coating roller, preceding rubber roll is optical cement roller of the hardness in 50HBW or so,
Back cot uses hardness, and in 50HBW or so corrugation rolls, roll gap spacing is accurate by infrared ray distance meter up and down for coating roller
It has been shown that, each roller rotating speed are accurately controlled by variable-frequency motor.
The protective rubber drying oven uses hot air circulation box-type drying oven, and temperature is realized by temperature sensor and controller
The accurate control of degree, generally magnesium plate is in that levels are placed in drying oven, and circulated air should use side air inlet mode, to ensure
Magnesium plate is heated evenly.
Described photoresists drying oven uses the tunnel-type drying furnace of individual layer, bilayer or multilayer, and tunnel translational speed can lead to
Cross frequency converter accurately to control, temperature accurately controls also by thermocouple and controller, can so ensure that every magnesium plate is heated situation
It is identical.
Preferably, the final pass in the sanding unit is provided with 1~2 sand-blasting machine.
Preferably, in the photoresists coating roller, preceding rubber roll is optical cement roller, and back cot is corrugation rolls；It is described anti-
In sheath coating roller, preceding cloth rubber roll and rear cloth rubber roll are optical cement roller.
Compared with prior art, the present invention has following beneficial effect：This patent provides pressing precoating magnesium plate life
Production. art, the blank in terms of domestic precoating magnesium version production technology, the precoating magnesium plate produced according to this process, interior nothing are filled up
The residual stress of plastic deformation, flatness are very high；Magnesium plate is significantly reduced by the chance of aqueous corrosion in technological process, and plate face is bright and clean dry
Only, oxide-free；Disappear through sandblasting, microcorrosion back plate facing sand light vestige, strengthen with ink adhesion, photosurface development resolution ratio
Improve；Accurate drying regulation causes different batches precoating magnesium plate stability significantly to strengthen.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the production method process chart of the pre-coating photosensitive glue magnesium version of the present invention.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
The present embodiment is related to the production method of the precoating magnesium alloy etched plate of one kind 2 × 610 × 914mm specifications, specific bag
Include following steps：
From the thick AZ31B magnesium alloy rolling bands of 2.3~2.5mm, its essential element Al, Zn, Mn, Ca are detected reasonable
Within the scope of, the rolled strip is aligned by straightener afterwards, then cut out strip to required width and length by hydraulic shear
Degree, error ± 3mm；
The magnesium alloy plate cut is stacked and is put into box-type aging furnace, and is being placed above one compared with heavy metal
Block, reach the effect for applying even distributed force, aging furnace is heated to 280 DEG C, preserves 4h, afterwards furnace cooling；
By the magnesium alloy plate after timeliness between 80 mesh abrasive finishing machine abrasive finishings to 2.10~2.15, afterwards again with the sand of 240 mesh
Ray machine is by the equal sanding in magnesium plate two sides between 2.05~2.08mm；Cleaning drying machine of directly being made a gift to someone after sanding carries out cleaning baking
Dry, drying temperature is set as 180 DEG C；Magnesium plate is erect to place after drying and dries 4h；
Using corrosion-resistant, high temperature resistant type ink as etched plate back guard glue, such a ink viscosity is higher, using roller coating
Machine is coated, and coating roller rubber roll uses Brinell hardness 60HBW above optical cement rollers, before roller coating ink need in proportion allocate, stir,
Filtering, stand, adjust the relevant parameters such as coating roller roll gap, rotating speed, ink is poured between uniform steel rider and uniform rubber roll, will
Magnesium plate block-by-block to be coated is put into coating roller roller-way and is coated, and the magnesium alloy plate after coating overcoat is stood into 30min, sent afterwards
Enter box-type drying oven, by temperature be set as 150 DEG C, the time be set as 45min, furnace cooling afterwards；
Precoating magnesium alloy plate semi-finished product after cooling are subjected to secondary sanding, first with the passage of 240 mesh abrasive band sanding 2, it
Afterwards with the passage of 600 mesh abrasive band sanding 3, the magnesium alloy semi-finished product after sanding are put into acid etching solution and corroded, corrosive liquid is pressed
According to concentrated sulfuric acid 7.5mL/L, ammonium acid fluoride 3.2g/L, additive 10g/L is configured, and time 25s, photoresists to be coated are face-up.
After microcorrosion terminates, cleaning drying machine is sent at once, 200 DEG C of drying temperature, precoating magnesium plate semi-finished product is erect into placement afterwards and dried in the air
Shine 4h；
Using complete accurate double roller coating roller by photosensitive-ink even application in magnesium plate sanding face, photosensitive-ink viscosity is relatively low,
Prior ink is allocated, stirs, filters, stood in proportion, and coating roller up-down rollers are seamed and are set to 1.95mm, are entered according to predetermined arrangement
Row coating, is put into tunnel heating by magnesium plate after coating and is heated, temperature is set as 90 DEG C, time 20min；
The precoating plate after photosensitive-ink will be painted with and put drying more than 24h on the top of the shelf, this operation carries out (available in darkroom
Infrared light, yellow fluorescent lamp), black plastic film is wrapped in above light sensitive layer with laminating machine afterwards, afterwards by product stamp, bag
Dress, storage.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of production method of pre-coating photosensitive glue magnesium version, it is characterised in that comprise the following steps：
Magnesium alloy plate shearing, Ageing Treatment, first time sanding, first time cleaning, drying, for the first time dry, coating overcoat,
First time heating and thermal insulation, second of sanding, surface microprocessor, second of cleaning, drying, second dry, coating photoresists, the
Reheating insulation, stand, overlay film.
2. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the trade mark of the magnesium alloy plate
For AZ31B.
3. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the method for the Ageing Treatment
For magnesium alloy plate is placed in aging furnace, applies 10 along the thickness direction of magnesium alloy plate3~104Pa well-distributed pressure, temperature
Degree rises to 250~300 DEG C, is incubated 2~3h.
4. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the magnesium after the first time sanding
The surface roughness Ra of sheet alloy is less than 1.0, and the surface roughness Ra after second of sanding is less than 0.6.
5. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the method for the coating overcoat
For roller coating, the thickness of overcoat is 15~30 μm.
6. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the corrosion of the surface microprocessor
Liquid is the mixture of the concentrated sulfuric acid, ammonium acid fluoride and organic inhibitor, and the volume fraction of the concentrated sulfuric acid is 7.5mL/L, the fluorine
The concentration for changing hydrogen ammonium is 3.2g/L, the organic inhibition agent concentration 5g/L~10g/L, microcorrosion 20~30s of processing time.
7. pre-coating photosensitive glue magnesium version production method as claimed in claim 1, it is characterised in that the method for the coating photoresists
For roller coating, the thickness of photoresists is 16~25 μm.
A kind of 8. production system of the pre-coating photosensitive glue magnesium version of pre-coating photosensitive glue magnesium version production method applied to described in claim 1
System, it is characterised in that including hydraulic shear, sanding unit, cleaning drying machine, overcoat coating roller, photoresists coating roller, photoresists
Drying oven, protective rubber drying oven, laminating machine, the sanding unit include some sanders linearly arranged, some sand
The abrasive band mesh number of ray machine increases successively from front to back；The overcoat coating roller is complete accurate double roller coating roller；The photoresists
Coating roller is complete accurate double roller coating roller；The protective rubber drying oven is hot air circulation casing drying oven；The photoresists drying
Stove is tunnel-type drying furnace.
9. the production system of pre-coating photosensitive glue magnesium version as claimed in claim 8, it is characterised in that in the sanding unit most
Passage is provided with 1~2 sand-blasting machine afterwards.
10. the production system of pre-coating photosensitive glue magnesium version as claimed in claim 8, it is characterised in that the photoresists coating roller
In, preceding rubber roll is optical cement roller, and back cot is corrugation rolls；In the overcoat coating roller, preceding cloth rubber roll and rear cloth rubber roll are light
Rubber roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667952.2A CN107479328B (en) | 2017-08-07 | 2017-08-07 | Production method and production device of precoated photoresist magnesium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667952.2A CN107479328B (en) | 2017-08-07 | 2017-08-07 | Production method and production device of precoated photoresist magnesium plate |
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| CN107479328A true CN107479328A (en) | 2017-12-15 |
| CN107479328B CN107479328B (en) | 2021-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410378A (en) * | 2018-01-18 | 2018-08-17 | 上海利正卫星应用技术有限公司 | A kind of protective film for substituting magnesium alloy etching back anti-decaying paint |
| CN108437647A (en) * | 2018-01-18 | 2018-08-24 | 上海利正卫星应用技术有限公司 | A kind of magnesium alloy etching plate producing process substituting back side anti-decaying paint with protective film |
| CN110359650A (en) * | 2019-07-22 | 2019-10-22 | 原阳县大诚家居材料有限公司 | One kind exempting from enamel-cover and covers balustrade or guardrail and preparation method thereof |
| CN114261177A (en) * | 2022-03-03 | 2022-04-01 | 河南精镁新材料有限公司 | Etched magnesium board production device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410378A (en) * | 2018-01-18 | 2018-08-17 | 上海利正卫星应用技术有限公司 | A kind of protective film for substituting magnesium alloy etching back anti-decaying paint |
| CN108437647A (en) * | 2018-01-18 | 2018-08-24 | 上海利正卫星应用技术有限公司 | A kind of magnesium alloy etching plate producing process substituting back side anti-decaying paint with protective film |
| CN110359650A (en) * | 2019-07-22 | 2019-10-22 | 原阳县大诚家居材料有限公司 | One kind exempting from enamel-cover and covers balustrade or guardrail and preparation method thereof |
| CN114261177A (en) * | 2022-03-03 | 2022-04-01 | 河南精镁新材料有限公司 | Etched magnesium board production device and method |
| CN114261177B (en) * | 2022-03-03 | 2022-05-24 | 河南精镁新材料有限公司 | Etched magnesium board production device and method |
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| CN107479328B (en) | 2021-07-06 |
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