CN1760497B - Weatherproof color shape bars in aluminium alloy, and manufacturing method - Google Patents
Weatherproof color shape bars in aluminium alloy, and manufacturing method Download PDFInfo
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- CN1760497B CN1760497B CN 200410067221 CN200410067221A CN1760497B CN 1760497 B CN1760497 B CN 1760497B CN 200410067221 CN200410067221 CN 200410067221 CN 200410067221 A CN200410067221 A CN 200410067221A CN 1760497 B CN1760497 B CN 1760497B
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Abstract
The present invention relates to a superweathering color aluminum alloy section material and its production method. The composition of its base material is AlMg Si0.5-F22 alloy, according to Mg/Si=1.73, in which Mg (0.50-0.75%), Si (0.35-0.50%), Fe (less than 0.3%), Cu(less than 0.1%), Mn (less than 0.1%), Cr (less than 0.1%), Zn (less than 0.1%) and Ti (less than 0.1%); said base material is covered with chromized film whose thickness is 300-1000 mg/sq.m, and the chromized film also is covered with polyester powder coating layer which has imitation woodgrain pattern and whose thickness is 40-120 microns. Its production method includes the following steps: preparing aluminum alloy section base material, making pretreatment and chromizing process, spray-coating super weathering antistatic powder and heat transfer printing imitation woodgrain pattern.
Description
Technical field
The present invention relates to the aluminium alloy extrusions field, relate in particular to a kind of energy ultra-long time and keep its surface color and performance and aluminium alloy extrusions and manufacture method thereof that different color can be arranged.
Background technology
Because it is easy, easy to make that aluminium alloy extrusions is drawn materials, and durable in use, be comparatively popular a kind of use in construction of door and window structure ornament materials of holding concurrently at present.
But not doing the surface-treated aluminium alloy extrusions is not have decoration function, and existing aluminium alloy section surface processing method mainly contains: anodic oxidation; Electrostatic powder coating; Electrophoretic coating and the spraying of fluorine carbon lacquer etc. are several.
These surfacings respectively have characteristics: electrolytic anodization surface advantage is low, the long service life of cost, and shortcoming is the creeping chill that color is few, metal is arranged; Electrostatic powder coating surface advantage is that rich color, impression are good, and cost is medium, and shortcoming is that weatherability was generally about 10 years; The advantage of electrophoretic process is to handle rich color, impression than electrolytic anodization, but shortcoming is a slightly height of processing cost; The advantage of fluorine carbon is a good weatherability, and shortcoming is that coating is thin, price is high.
More than the aluminium extruded sections on several surfaces though characteristics are respectively arranged, but integrating at present still uses the most extensive with color static powder spraying aluminium extruded sections, but because the application life of common buildings is all greater than 50 years, therefore, door and window (section bar) as a building part also should have equal application life in theory, and the only shortcoming of existing color static powder spraying aluminium extruded sections to be exactly the weatherability of its face coat promptly use the life-span can not satisfy the requirement of building.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of weatherproof color shape bars in aluminium alloy, have both had fabulous weather resistance, have surface color and polish again and enrich, and cost is moderate, has solved above-mentioned defective.
The present invention also provides a kind of manufacture method in order to make above-mentioned aluminium alloy extrusions.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Weatherproof color shape bars in aluminium alloy of the present invention comprises: the composition proportion of base material is: the AlMgSi0.5-F22 alloy, press Mg/Si=1.73, wherein Mg (0.50-0.75%), Si (0.35-0.50%), Fe (＜0.3%), Cu (＜0.1%), Mn (＜0.1%), Cr (＜0.1%), Zn (＜0.1%), Ti (＜0.1%); Cladding thickness is 300-1000mg/m on described base material
2The chromaking film; On described chromaking film, cover the polyester powder coating with Wood-grain-imitating pattern of 40-120 micron;
Manufacture method of the present invention realizes by following steps:
Preparation aluminium alloy extrusions base material;
High-quality pre-treatment chromaking technology;
Super weather-proof electrostatic powder coating;
The hot transfer printing of Wood-grain-imitating;
Compared with prior art, the invention has the beneficial effects as follows: the rich color of existing common electrostatic powder coating aluminium extruded sections, the moderate advantage of cost, and for example fluorocarbon-sprayed section bar equally has fabulous weather resistance, promptly has application life with the similar time limit of building, and can make aluminium alloy extrusions have the outer dress of senior solid wood texture, make it have fabulous decoration function, thereby given play to the practicality and the decorative function of aluminium alloy extrusions to greatest extent; Applicable to all the occasion of high-weatherability and high-decoration instructions for use is arranged, alternative routine fluorocarbon-sprayed realized the true effect of high-grade solid wood material, so have more environmental protection, more economical and more high-grade properties of product.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is described in further detail:
Embodiment 1
Weatherproof color shape bars in aluminium alloy of the present invention comprises: the composition proportion of base material is: the AlMgSi0.5-F22 alloy, press Mg/Si=1.73, wherein Mg (0.50-0.75%), Si (0.35-0.50%), Fe (＜0.3%), Cu (＜0.1%), Mn (＜0.1%), Cr (＜0.1%), Zn (＜0.1%), Ti (＜0.1%); Cladding thickness is 300mg/m on described base material
2The chromaking film; On described chromaking film, cover 40 microns polyester powder coating with Wood-grain-imitating pattern.
Embodiment 2
Weatherproof color shape bars in aluminium alloy of the present invention comprises: the composition proportion of base material is: the AlMgSi0.5-F22 alloy, press Mg/Si=1.73, wherein Mg (0.50-0.75%), Si (0.35-0.50%), Fe (＜0.3%), Cu (＜0.1%), Mn (＜0.1%), Cr (＜0.1%), Zn (＜0.1%), Ti (＜0.1%); Cladding thickness is 1000mg/m on described base material
2The chromaking film; On described chromaking film, cover 120 microns polyester powder coating with Wood-grain-imitating pattern.
Embodiment 3
Weatherproof color shape bars in aluminium alloy of the present invention comprises: the composition proportion of base material is: the AlMgSi0.5-F22 alloy, press Mg/Si=1.73, wherein Mg (0.50-0.75%), Si (0.35-0.50%), Fe (＜0.3%), Cu (＜0.1%), Mn (＜0.1%), Cr (＜0.1%), Zn (＜0.1%), Ti (＜0.1%); Cladding thickness is 500mg/m on described base material
2The chromaking film; On described chromaking film, cover 80 microns polyester powder coating with Wood-grain-imitating pattern.
Manufacture method of the present invention realizes by following steps:
Preparation aluminium alloy extrusions base material;
High-quality pre-treatment chromaking technology;
Super weather-proof electrostatic powder coating;
The hot transfer printing of Wood-grain-imitating;
Described preparation aluminium alloy extrusions base material is realized by following steps:
The AlMgSi0.5-F22 alloy is carried out to distribution ratio and technology controlling and process by the technical requirements of Mg/Si=1.73, and concrete al alloy component proportioning is: wherein Mg (0.50-0.75%), Si (0.35-0.50%), Fe (＜0.3%), Cu (＜0.1%), Mn (＜0.1%), Cr (＜0.1%), Zn (＜0.1%), Ti (＜0.1%);
Use aluminium titanium boron wire as the refine on line fining agent during alloy melting, and adopt 2-2.5 hour quick homogenising treatment process of 560-580 ℃ of insulation, harmful microstructure segregation that metal freezing is caused during with the elimination founding casting rod;
Then adopted during the aluminium alloy extrusions hot extrusion air-cooled fast after 460-480 ℃ of billet preheating, the extruding, be that 3.5-4 hour artificial aging of 185-195 ℃ of insulation is handled then, thereby guarantee that it reaches desirable high strength and high tenacity;
Described high-quality pre-treatment chromaking is handled and is realized by following steps:
Adopt nine station pre-treating technologies of degreasing, washing, washing, table accent, washing, chromaking, washing, washing, washing, washing, making aluminium alloy extrusions obtain thickness before spraying is 300-1000mg/m
2About desirable chromaking film, boil test and ageing resistace etc. and all can get a desired effect to guarantee the adhesive power after the powder spraying, counter-bending, cupping, impact, salt spray test, anti-boiling;
Described super weather-proof electrostatic powder coating, be that employing has the primary raw material of the senior polyester powder of super-weathering resistance energy as this aluminium alloy section surface sprayed coating, by making powder carry high-pressure electrostatic, evenly be adsorbed on aluminium alloy section surface then, solidify through about 15-20 minute levelling of 180-200 ℃ of insulation, form the polyester film with super-weathering resistance energy of average thickness 40-120 micron at aluminium alloy section surface with the realization powder coating;
The hot transfer printing of described Wood-grain-imitating is: the heat-resisting transfer film that will be printed on wood texture pattern true to nature covers aluminium alloy section surface, then with the mode general air emptying wherein that vacuumizes, be heated to 165-200 ℃ again, enter to make heat-resistant film to separate the air blowback again after coming out of the stove with aluminium alloy extrusions, then grain pattern is just under the expanded by heating effect of the heating sublimation by its specialty inks and polyester film, penetrate into above-mentioned super-weatherable polyether film top layer, form grain pattern reduction true to nature, make aluminium alloy extrusions as the senior solid wood of import.
Through the strictness test, its properties of product that can reach are as follows:
Section bar machinery and physical property:
σ
bMore than or equal to 210MPa
α
sMore than or equal to 160MPa
δ is more than or equal to 10%
HV is more than or equal to 70
Section bar external coating performance:
Thickness: 40～120 μ m
Hardness: more than or equal to 2H (identation hardness :) more than or equal to 80
Adhesive power: 0 grade
Gloss (60 °): Gao Guang: (71～100) ± 10
Half light: (31～70) ± 7
Unglazed: (0～30) ± 5
Shock resistance: 2.5Nm
Bending property: 3mm
AEG-process:＞5mm
Salt-fog resistant test (1000 hours) has less than 16mm in the 10cm cut
2Corrosion weather resistance test 5 years, protect the light rates for 5 ° towards southern inclination angle:＞50%
Artificial accelerated aging test (1000 hours):
Loss of gloss rate :≤50%
Color becomes
E=2-8 (according to not homochromy and change)
Boiling water boiling test (2 hours): no significant change
Chemical resistance
Following chemicals all can be tested by the strictness more than a year:
Mineral-type: 10% sulfuric acid, 10% phosphoric acid, 10%Na
2CO
3, deionized water, 1% sodium carbonate, seawater etc.;
Organic class: 3% acetic acid, 10% acetic acid, 10% lactic acid, 37% formalin, 25% ethanol, 95% ethanol, kerosene, fuel oil, silicon porcelain oil, acrylic acid classification body etc.;
Processing characteristics:
Product mills processing and bent arc, wears machinings such as bar pressing, tapping through sawing, punching, saw, and assembly manipulation does not all have influence to performance and functional completeness.
Claims (3)
1. weatherproof color shape bars in aluminium alloy, it is characterized in that: the composition proportion of base material is: the AlMgSi0.5-F22 alloy, press Mg/Si=1.73, wherein the ratio of Mg between the 0.50-0.75%, the ratio of Si between 0.35-0.50%, ratio＜0.3% of Fe, ratio＜0.1% of Cu, ratio＜0.1% of Mn, ratio＜0.1% of Cr, ratio＜0.1% of Zn, ratio＜0.1% of Ti; Cladding thickness is 300-1000mg/m on described base material
2The chromaking film; On described chromaking film, cover the polyester powder coating with Wood-grain-imitating pattern of 40-120 micron.
2. weatherproof color shape bars in aluminium alloy according to claim 1 is characterized in that: described chromaking film thickness is 500mg/m
2
3. method of making claim 1, realize by following steps:
Preparation aluminium alloy extrusions base material;
High-quality pre-treatment chromaking technology;
Super weather-proof electrostatic powder coating;
The hot transfer printing of Wood-grain-imitating;
Described preparation aluminium alloy extrusions base material is realized by following steps:
The AlMgSi0.5-F22 alloy is carried out to distribution ratio and technology controlling and process by the technical requirements of Mg/Si=1.73, and concrete al alloy component proportioning is: wherein the ratio of Mg between the 0.50-0.75%, the ratio of Si between 0.35-0.50%, ratio＜0.3% of Fe, ratio＜0.1% of Cu, ratio＜0.1% of Mn, ratio＜0.1% of Cr, ratio＜0.1% of Zn, ratio＜0.1% of Ti;
Use aluminium titanium boron wire as the refine on line fining agent during alloy melting, and adopt 2-2.5 hour quick homogenising treatment process of 560-580 ℃ of insulation casting rod;
Then adopted during the aluminium alloy extrusions hot extrusion air-cooled fast after 460-480 ℃ of billet preheating, the extruding, be that 3.5-4 hour artificial aging of 185-195 ℃ of insulation is handled then;
Described high-quality pre-treatment chromaking is handled and is realized by following steps:
Adopt ten station pre-treating technologies of degreasing, washing, washing, table accent, washing, chromaking, washing, washing, washing, washing, making aluminium alloy extrusions obtain thickness before spraying is 300-1000mg/m
2About desirable chromaking film;
Described super weather-proof electrostatic powder coating, be that employing has the primary raw material of the senior polyester powder of super-weathering resistance energy as this aluminium alloy section surface sprayed coating, by making powder carry high-pressure electrostatic, evenly be adsorbed on aluminium alloy section surface then, solidify through about 15-20 minute levelling of 180-200 ℃ of insulation, form the polyester film with super-weathering resistance energy of average thickness 40-120 micron at aluminium alloy section surface with the realization powder coating;
The hot transfer printing of described Wood-grain-imitating is: the heat-resisting transfer film that will be printed on wood texture pattern true to nature covers aluminium alloy section surface, then with the mode general air emptying wherein that vacuumizes, be heated to 165-200 ℃ again, enter to make heat-resistant film to separate the air blowback again after coming out of the stove with aluminium alloy extrusions, then grain pattern is under the expanded by heating effect of the heating sublimation of its specialty inks and polyester film, penetrate into above-mentioned super-weatherable polyether film top layer, form grain pattern reduction true to nature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410067221 CN1760497B (en) | 2004-10-15 | 2004-10-15 | Weatherproof color shape bars in aluminium alloy, and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410067221 CN1760497B (en) | 2004-10-15 | 2004-10-15 | Weatherproof color shape bars in aluminium alloy, and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1760497A CN1760497A (en) | 2006-04-19 |
| CN1760497B true CN1760497B (en) | 2010-10-06 |
Family
ID=36706699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410067221 Expired - Fee Related CN1760497B (en) | 2004-10-15 | 2004-10-15 | Weatherproof color shape bars in aluminium alloy, and manufacturing method |
Country Status (1)
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Cited By (1)
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|---|---|---|---|---|
| CN102794322A (en) * | 2012-08-29 | 2012-11-28 | 东南大学 | Manufacturing method of light alloy section bar |
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| CN1760497A (en) | 2006-04-19 |
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