CN102355805A - Surface glazing technology for aluminium shell of electronic product - Google Patents
Surface glazing technology for aluminium shell of electronic product Download PDFInfo
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- CN102355805A CN102355805A CN2011102924617A CN201110292461A CN102355805A CN 102355805 A CN102355805 A CN 102355805A CN 2011102924617 A CN2011102924617 A CN 2011102924617A CN 201110292461 A CN201110292461 A CN 201110292461A CN 102355805 A CN102355805 A CN 102355805A
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Abstract
The invention relates to a surface glazing technology for an aluminium shell of an electronic product, comprising the following steps of: 1) stamping and cleaning an aluminium substrate; 2) spraying a white glaze material on the surface of the aluminium substrate, and baking for 3-8 minutes at 50-200 DEG C to form a ground coat layer; 3) printing patterns on the surface of the ground coat layer, and then, sintering for 3-10 minutes at 500-600 DEG C to form an ink layer; and 4) spraying a transparent glaze material on the surface of the ink layer, baking for 6-10 minutes at 50-200 DEG C, and then, sintering for 3-10 minutes at 500-600 DEG C. In comparison with the existing anode manufacture procedure, the technology provided by the invention has less steps and is simple in operation, and cannot generate heavy pollutants, such as strong acid, strong base and the like, so that the technology is more environmentally-friendly; and in the technology, surface glazing for the aluminium substrate at a lower sintering temperature can be realized, abundant of designs and colours are provided, and products of the technology are excellent in abrasive resistance, alcohol resistance, violet resistance, high and low temperature cycling resistance and high-humidity resistance.
Description
Technical field
The present invention relates to field of metal surface treatment, be specifically related to a kind of technology of carrying out deciding glaze on the surface of electronic product aluminium shell
Background technology
are present, and the aluminium shell of electronic products such as 3C adds man-hour carrying out surface treatment, and main what adopt is the anodic oxidation processing procedure.This processing procedure generally includes following steps: substrate wire drawing-punching press-degreasing-washing-alkali erosion-washing-chemical polishing-anodic oxidation-electrolytic coloring-washing-surperficial aftertreatment-group is stood-packing.Anodised principle is as anode with metal or metal alloy; Adopt the method for electrolysis to form metal-oxide film on the metal or metal alloy surface; Thereby change the surface state of metal or metal alloy; Improve surperficial corrosion resistance, strengthen resistance to wear and hardness etc.; Also can in electrolyte, add dyestuff in this process, utilize the suction-operated of a large amount of micropores in the thin layer to carry out painted the metal or metal alloy surface.The anodic oxidation of aluminium and alloy thereof is exactly to form aluminum oxide film on the surface, and it can improve resistance to wear, thermal endurance, electrical insulating property and the corrosion resistance etc. of aluminium shell.But also there are many drawbacks in this anodic oxidation processing procedure, as 1) the process complicacy, input cost is relatively large; 2) use chemical reagent such as a large amount of strong acid and strong bases in the electrolytic process, environmental pollution is serious; 3) fineness of metal surface etc. is had relatively high expectations, the metal surface can not defectiveness; 4) the painted selection of product surface is single.
In
prior art; Have and be reported in the production technology that glaze is decided in the spraying of metallic article surface; It is the enamel powder that is utilized in metal surface spraying special component; Pass through the sintering of specified temp etc. again; Make metallic article surface coverage last layer enamel layer; With protection interior metal base material, and make the surface demonstrate a kind of bright and clean enamel glaze colours.The weak point of this technology is higher to the dependence of metal base (being generally iron) and process conditions; And because this technology generally all needs high temperature when sintering enamelled; As 800 ~ 1200 ℃; And the fusing point of aluminium relatively low (about 660 ℃); Therefore also do not have mature technique successfully to decide glaze at present, particularly decide glaze on the aluminium shell surface of electronic products such as 3C on the aluminum products surface
Summary of the invention
technical problem to be solved by this invention is to overcome deficiency of the prior art, and a kind of surperficial glazing technology of electronic product aluminium shell is provided.
For realizing above-mentioned purpose, the present invention takes following technical scheme:
A kind of surperficial glazing technology of electronic product aluminium shell may further comprise the steps:
(1), punching press: select aluminium base, said aluminium base is decided and punching press, carry out surface clean then according to setting size;
(2), spraying white glaze material: past aluminium base surface through step (1) sprays the white glaze material, toasts 3 ~ 8 minutes down at 50 ℃ ~ 200 ℃ then, forms ground glaze layer on said aluminium base surface;
(3), impressing pattern: the mode through the numerical digit ink jet printing is impressing pattern on the ground glaze layer surface of step (2) gained, 500 ℃ ~ 600 ℃ following sintering 3 ~ 10 minutes, forms ink lay again;
(4), spraying marzacotto: at the ink lay surface spraying marzacotto of step (3) gained; Toasted 6 ~ 10 minutes down at 50 ℃ ~ 200 ℃; Then 500 ℃ ~ 600 ℃ following sintering 3 ~ 10 minutes; Form the clear frit layer on said ink lay surface, make the electronic product aluminium shell that the surface has glaze colours gloss.
Preferably, the sintering temperature in step (3) and the step (4) is between 530 ℃ ~ 570 ℃
preferably, the baking temperature in step (2) and the step (4) is between 80 ℃ ~ 120 ℃.
preferably in the step (2), toward the side surface spraying white glaze material through the aluminium base of step (1), 50 ℃ ~ 200 ℃ bakings 3 ~ 8 minutes down, form ground glaze layer on said aluminium base surface then.
further; Said surperficial glazing technology also comprises step (5) after step (4): the protective agent in the spray metal, opposite side surface of said aluminium base; Toasted 15 ~ 40 minutes down at 150 ℃ ~ 300 ℃ then, make the electronic product aluminium shell that the surface has glaze colours gloss.
according to the present invention, percentage meter by weight, and the metal coating agent described in the step (5) comprises following component: 20% ~ 25% silicon, 60% ~ 70% isopropyl alcohol, 8% ~ 10% water.
technology of the present invention make and aluminium shell can be applicable in the electronic product, especially use as notebook computer casing.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
1, processing step of the present invention are few, simple to operate, can not produce heavy contaminant such as strong acid and strong base, therefore compare more environmental protection with the anode processing procedure of prior art; 2, glaze decide on the technology of the present invention aluminium base surface that can be implemented under the lower sintering temperature, and gained aluminium shell product has well wear-resisting, anti-alcohol, uvioresistant, and high-low temperature resistant circulates and anti-height is moist; 3) the present invention can print various colors and pattern at the glaze laminar surface as required, and the washability of product surface pattern is greatly increased.
Description of drawings
Fig. 1 is technological process of production figure of the present invention.
Embodiment
are done further detailed explanation below in conjunction with concrete embodiment to the present invention, but are not limited to these embodiment.
Embodiment 1
Present embodiment provides a kind of manufacture craft of notebook computer casing, and referring to Fig. 1, this manufacture craft comprises the steps:
(1), punching press: select the higher aluminium base of aluminium purity, said aluminium base is decided and punching press, carry out surface clean then according to setting size;
(2), spray the white glaze material: a side surface of the aluminium base of past process step (1) sprays the white glaze material, toasts 5 minutes down at 120 ℃ then, at the side surface formation ground glaze layer of this aluminium base;
(3), impressing pattern: the mode through the numerical digit ink jet printing is impressing pattern on the ground glaze layer surface of step (2) gained, 530 ℃ of following sintering 6 ~ 8 minutes, forms ink lay again;
(4), spraying marzacotto:,, 530 ℃ of following sintering 6 ~ 8 minutes, form the clear frit layer then on said ink lay surface 120 ℃ of bakings 6 ~ 10 minutes down at the ink lay of step (3) gained surface spraying marzacotto; So far, a side surface of this aluminium base demonstrates bright-coloured glaze colours gloss.Because electronic product especially notebook computer requires thermal diffusivity good usually, therefore after step (4), also can carry out further last handling process, as follows:
(5), reprocessing: the spray metal protective agent (trade mark 1800) on the opposite side surface of said aluminium base, toasted in 200 ℃ baking oven 20 ~ 30 minutes, with protection aluminium base and the thermal diffusivity that increases aluminium base then; The composition of said metal coating agent comprises 20% ~ 25% silicon, 60% ~ 70% isopropyl alcohol, 8% ~ 10% water; Finally make and have good heat radiating property and the surface has glaze colours gloss, a plentiful notebook computer aluminium shell of pattern.
Embodiment 2
The manufacture craft of the notebook computer casing that present embodiment provides comprises the steps:
(1), punching press: select the higher aluminium base of aluminium purity, said aluminium base is decided and punching press, carry out surface clean then according to setting size;
(2), spray the white glaze material: a side surface of the aluminium base of past process step (1) sprays the white glaze material, toasts 5 minutes down at 100 ℃ then, at the side surface formation ground glaze layer of this aluminium base;
(3), impressing pattern: the mode through the numerical digit ink jet printing is impressing pattern on the ground glaze layer surface of step (2) gained, 550 ℃ of following sintering 6 ~ 8 minutes, forms ink lay again;
(4), spraying marzacotto:,, 550 ℃ of following sintering 6 ~ 8 minutes, form the clear frit layer then on said ink lay surface 100 ℃ of bakings 6 ~ 10 minutes down at the ink lay of step (3) gained surface spraying marzacotto; So far, a side surface of this aluminium base demonstrates bright-coloured glaze colours gloss;
(5), reprocessing: the spray metal protective agent (trade mark 1800) on the opposite side surface of said aluminium base, toasted in 220 ℃ baking oven 20 ~ 30 minutes, with protection aluminium base and the thermal diffusivity that increases aluminium base then; The composition of said metal coating agent comprises 20% ~ 25% silicon, 60% ~ 70% isopropyl alcohol, 8% ~ 10% water; Finally make and have good heat radiating property and the surface has glaze colours gloss, a plentiful notebook computer aluminium shell of pattern.
Embodiment 3
The manufacture craft of the notebook computer casing that present embodiment provides comprises the steps:
(1), punching press: select the higher aluminium base of aluminium purity, said aluminium base is decided and punching press, carry out surface clean then according to setting size;
(2), spray the white glaze material: a side surface of the aluminium base of past process step (1) sprays the white glaze material, toasts 5 minutes down at 80 ℃ then, at the side surface formation ground glaze layer of this aluminium base;
(3), impressing pattern: the mode through the numerical digit ink jet printing is impressing pattern on the ground glaze layer surface of step (2) gained, 570 ℃ of following sintering 6 ~ 8 minutes, forms ink lay again;
(4), spraying marzacotto:,, 570 ℃ of following sintering 6 ~ 8 minutes, form the clear frit layer then on said ink lay surface 80 ℃ of bakings 6 ~ 10 minutes down at the ink lay of step (3) gained surface spraying marzacotto; So far, a side surface of this aluminium base demonstrates bright-coloured glaze colours gloss;
(5), reprocessing: the spray metal protective agent (trade mark 1800) on the opposite side surface of said aluminium base, toasted in 250 ℃ baking oven 20 ~ 30 minutes, with protection aluminium base and the thermal diffusivity that increases aluminium base then; The composition of said metal coating agent comprises 20% ~ 25% silicon, 60% ~ 70% isopropyl alcohol, 8% ~ 10% water; Finally make and have good heat radiating property and the surface has glaze colours gloss, a plentiful notebook computer aluminium shell of pattern.
In
prepared product of the foregoing description, the thickness of ground glaze layer and clear frit layer is all between 50 ~ 80 microns, and is and best with the aluminium shell color and luster and the feel of gained among the embodiment 2, glaze colours gloss, and pattern is plentiful.
Embodiment 4
Embodiment 2 prepared aluminium shell products are carried out service check (inspection is held by Jiangsu Province electronics and IT products quality supervision and test research institute), and the method for inspection and result are following:
1, RCA abrasion test:
Specification requirement: test environment: 20 ± 2 ℃ of temperature, humidity 55%;
Belt speed: 50mm/s, the wide paper tape of 60#;
Confirm load: 175gf;
Tester: RCA wear test machine;
qualified index: surpass 200 times, surface of base should not be shown.
test result: qualified.
, adhesion test:
specification requirement: sample was 25 ℃ of environment held 24 hours; With hundred lattice cutter cutting-ups surface to be tested; Paste by the cutting-up face with 3M 610# adhesive tape; In the adhesive tape air can not be arranged when pasting; The time of pasting was at 90 ± 30 seconds; Angle with 180 ° is torn adhesive tape, pastes repeatedly 3 times.
qualified index: the area that comes off＜5%.
test result: qualified.
, hardness test (pencil hardness):
specification requirement: pencil: 3H; Angle: 45 °; Load: 1000gf; Length: 10 millimeters; Testing time: 5 times.
qualified index: surperficial non-scale.
test result: qualified.
, ethanol-tolerant test:
specification requirement: tulle is immersed in the alcohol (concentration 95%), and the counterweight of device 500gf rubs 1000 times on the about 20 millimeters length in sample test surface back and forth, then the sample for reference surface.
qualified index: wearing and tearing, show-through phenomenon can not be arranged at appointed test surfaces.
test result: qualified.
, increment:
specification requirement: 1. in 1 hour, ambient temperature is adjusted to-40 ℃, relative humidity 85%, with sample this environment held 1 hour; 2. in 2 hours, ambient temperature is adjusted to 80 ℃, relative humidity 85%, with sample this environment held 1 hour; 3. in 1 hour, ambient temperature is adjusted to normal temperature (about 25 ℃), with sample this environment held 1 hour; 1. ~ 3. repetitive cycling after 15 times, was placed on room temperature state following 2 hours with sample, the test sample state.
qualified index: do not have to reduce stick together, the performance of gloss, color.
test result: qualified.
, ultraviolet resistance (UV) test:
were placed on sample in the tester of anti-UV 100 hours, then the test sample state.
qualified index: do not have color fade or the phenomenon of decolouring.
test result: qualified.
More than the present invention has been done detailed description; Its purpose is to allow the personage that is familiar with this art can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention
Claims (8)
1. the surperficial glazing technology of an electronic product aluminium shell is characterized in that: may further comprise the steps:
(1), punching press: select aluminium base, said aluminium base is decided and punching press, carry out surface clean then according to setting size;
(2), spraying white glaze material: past aluminium base surface through step (1) sprays the white glaze material, toasts 3 ~ 8 minutes down at 50 ℃ ~ 200 ℃ then, forms ground glaze layer on said aluminium base surface;
(3), impressing pattern: the mode through the numerical digit ink jet printing is impressing pattern on the ground glaze layer surface of step (2) gained, 500 ℃ ~ 600 ℃ following sintering 3 ~ 10 minutes, forms ink lay again;
(4), spraying marzacotto: at the ink lay surface spraying marzacotto of step (3) gained; Toasted 6 ~ 10 minutes down at 50 ℃ ~ 200 ℃; Then 500 ℃ ~ 600 ℃ following sintering 3 ~ 10 minutes; Form the clear frit layer on said ink lay surface, make the electronic product aluminium shell that the surface has glaze colours gloss.
2. surperficial glazing technology according to claim 1 is characterized in that: the sintering temperature in step (3) and the step (4) is between 530 ℃ ~ 570 ℃.
3. surperficial glazing technology according to claim 1 is characterized in that: the baking temperature in step (2) and the step (4) is between 80 ℃ ~ 120 ℃.
4. surperficial glazing technology according to claim 1; It is characterized in that: in the step (2); The one side surface spraying white glaze material of the aluminium base of past process step (1) toasted 3 ~ 8 minutes down at 50 ℃ ~ 200 ℃, at the surperficial formation of said aluminium base ground glaze layer then.
5. surperficial glazing technology according to claim 4; It is characterized in that: said surperficial glazing technology also comprises step (5) after step (4): the protective agent in the spray metal, opposite side surface of said aluminium base; Toasted 15 ~ 40 minutes down at 150 ℃ ~ 300 ℃ then, make the electronic product aluminium shell that the surface has glaze colours gloss.
6. surperficial glazing technology according to claim 5 is characterized in that: percentage meter by weight, the metal coating agent described in the step (5) comprises following component: 20% ~ 25% silicon, 60% ~ 70% isopropyl alcohol, 8% ~ 10% water.
In the claim 1 ~ 6 each described surperficial glazing technology make and the application of aluminium shell in electronic product.
In the claim 1 ~ 6 each described surperficial glazing technology make and the application of aluminium shell in notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110292461 CN102355805B (en) | 2011-09-30 | 2011-09-30 | Surface glazing technology for aluminium shell of electronic product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110292461 CN102355805B (en) | 2011-09-30 | 2011-09-30 | Surface glazing technology for aluminium shell of electronic product |
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| CN102355805A true CN102355805A (en) | 2012-02-15 |
| CN102355805B CN102355805B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110292461 Active CN102355805B (en) | 2011-09-30 | 2011-09-30 | Surface glazing technology for aluminium shell of electronic product |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060804A (en) * | 2012-12-25 | 2013-04-24 | 佛山市唯艺金属制品有限公司 | Aluminum enamel process and building material products manufactured by the same |
| CN103522828A (en) * | 2012-07-04 | 2014-01-22 | 达泰科技股份有限公司 | Method for manufacturing housing |
| GB2535172A (en) * | 2015-02-10 | 2016-08-17 | A J Wells & Sons | Embossed vitreous enamel coating and method of forming the same |
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| EP0522401A1 (en) * | 1991-07-10 | 1993-01-13 | Email Brügge N.V. | Enamel slip, process for enamelling aluminised steel plate and enamelled steel plate |
| CN1600721A (en) * | 2004-10-08 | 2005-03-30 | 中国科学院长春应用化学研究所 | Method for preparing steady persistence enamel with aluminum product as base plate |
| CN1629356A (en) * | 2003-12-15 | 2005-06-22 | 许相熙 | Metallic plate coated with enamel layer and containing fluorine polymer, and method for making same |
| CN101200346A (en) * | 2006-12-13 | 2008-06-18 | 王伟昌 | Method for manufacturing enamel |
| CN201993679U (en) * | 2011-01-26 | 2011-09-28 | 陈忠 | Novel tablet computer |
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2011
- 2011-09-30 CN CN 201110292461 patent/CN102355805B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0522401A1 (en) * | 1991-07-10 | 1993-01-13 | Email Brügge N.V. | Enamel slip, process for enamelling aluminised steel plate and enamelled steel plate |
| CN1629356A (en) * | 2003-12-15 | 2005-06-22 | 许相熙 | Metallic plate coated with enamel layer and containing fluorine polymer, and method for making same |
| CN1600721A (en) * | 2004-10-08 | 2005-03-30 | 中国科学院长春应用化学研究所 | Method for preparing steady persistence enamel with aluminum product as base plate |
| CN101200346A (en) * | 2006-12-13 | 2008-06-18 | 王伟昌 | Method for manufacturing enamel |
| CN201993679U (en) * | 2011-01-26 | 2011-09-28 | 陈忠 | Novel tablet computer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522828A (en) * | 2012-07-04 | 2014-01-22 | 达泰科技股份有限公司 | Method for manufacturing housing |
| CN103060804A (en) * | 2012-12-25 | 2013-04-24 | 佛山市唯艺金属制品有限公司 | Aluminum enamel process and building material products manufactured by the same |
| GB2535172A (en) * | 2015-02-10 | 2016-08-17 | A J Wells & Sons | Embossed vitreous enamel coating and method of forming the same |
| GB2535172B (en) * | 2015-02-10 | 2019-10-30 | A J Wells & Sons | Embossed vitreous enamel coating and method of forming the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102355805B (en) | 2013-05-01 |
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