CN103397366A - Preparation method of constructional aluminium alloy anodic oxidized section bar - Google Patents
Preparation method of constructional aluminium alloy anodic oxidized section bar Download PDFInfo
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- CN103397366A CN103397366A CN2013103339268A CN201310333926A CN103397366A CN 103397366 A CN103397366 A CN 103397366A CN 2013103339268 A CN2013103339268 A CN 2013103339268A CN 201310333926 A CN201310333926 A CN 201310333926A CN 103397366 A CN103397366 A CN 103397366A
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Abstract
The invention discloses a preparation method of a constructional aluminium alloy anodic oxidized section bar, and belongs to the field of aluminum product production. According to the preparation method, magnesium ingot, silicon ingot, copper ingot and aluminum ingot are used as raw materials; an electric smelter, a high-pressure homogenization machine, a cylindrical die, an extruder, an aging oven, a washing tank, and an oxidation tank are used; and the finished products are prepared by fusion, homogenization, moulding, extrusion, aging, washing and oxidation of aluminum ingot and alloy materials. Advantages of the preparation method are that, the equipment possesses universality, preparation technologies are simple, production cycle is short, working voltage of oxidation is low, electrolyte is cheap, and decorative effect of oxidation film of the finished products is excellent. The finished products can be used as aluminium section bar for building frameworks, doors and windows, suspended ceilings, decorative covers, and curtain walls.
Description
Technical field
The invention belongs to the aluminum products manufacture field, relate in particular to a kind of production method of aluminium alloy anode oxide section bar for building.
Background technology
Aluminium has electroconductibility and thermal conductivity preferably, ductility is good, plasticity is high, can carry out various mechanical workout, the chemical property of aluminium is active, the surface of aluminium forms the thick approximately dense oxidation film of 5 millimicrons immediately in dry air, further oxidation energy are not water-fast to make aluminium, so aluminium has good solidity to corrosion in atmosphere; The powder of aluminium and air mixed be very easily burning, and the aluminium of melting can fiercely react with water; Aluminium is both sexes, both has been soluble in highly basic, also can be dissolved in diluted acid.The intensity of fine aluminium is low, only have the various aluminium alloys that just can obtain doing the structure materials'use by alloying, the outstanding feature of aluminium alloy is that density is little, intensity is high, aluminium-the manganese, the aluminium-magnesium alloy that in aluminium, add manganese, magnesium to form have good solidity to corrosion, and good plasticity and higher intensity, be called rust-preventing aluminum alloy, as starting material such as further interpolation copper, zinc, form duralumin, its intensity is high than rust-preventing aluminum alloy, but anti-corrosion performance descends to some extent.The alloy product of making is placed in to suitable electrolytic solution as the anode processing of switching on, this processing process is called anodic oxidation, through anodic oxidation, it is several oxide films to the hundreds of micron that the aluminium surface can generate thickness, the surface of this layer oxide film is porous honeycomb, compared with the Natural Oxide Film of aluminium alloy, and its solidity to corrosion, wear resistance and ornamentally all improve significantly and improve, adopt different electrolytic solution and processing condition, just can obtain anode oxide film of different nature.The electrolytic solution that anodic oxidation is adopted has sulfuric acid, oxalic acid and chromic acid, but the sulfuric acid of usining uses as electrolytic solution, have that operating voltage is low, the electrolytic solution cost is little, simple to operate, the ornamental series of advantages such as strong of oxide film, so present anodic oxidation more than 95% is carried out in sulfuric acid.The present invention is a kind of production method of aluminium alloy anode oxide section bar for building, product belongs to duralumin, it due to the Chemical Composition of product, is the key factor that determines the product properties, for the surface treatment properties that obtains good extrusion performance, high-quality, suitable mechanical property, satisfied surface quality and exterior decorative effect, must reasonably arrange in pairs or groups to the Chemical Composition of aluminium alloy.the raw material ratio of product of the present invention is: magnesium 0.45-0.60%, silicon 0.35-0.45%, magnesium/silicon=1.3-1.4, copper 0.05-0.08%, iron 0.15-0.20%, zinc 0.05-0.08%, titanium 0.05-0.09%, manganese 0.03-0.08%, chromium 0.02-0.09%, surplus is aluminium, magnesium wherein, silicon, copper needs to add in addition, iron, zinc, titanium, manganese, chromium is to contain in aluminium ingot, according to this formula, magnesium+silicon >=0.80%, and superfluous silicon amount is less than iron level, iron, zinc, copper, titanium, manganese, the content of chromium is also lower, quality to oxidation does not have too much influence, can guarantee that product has good extrusion performance, can guarantee that again product has good mechanical property and coating mass and surface quality, also can not cause simultaneously the waste of alloying element.Product of the present invention is take magnesium ingot, silicon ingot, copper ingot, aluminium ingot as raw material, take electric smelter, high pressure homogenizer, cylindrical die, extrusion machine, aging oven, rinse bath, oxidation trough as equipment, after the techniques such as the melting by aluminium ingot and alloy material, homogeneous, moulding, extruding, timeliness, cleaning, oxidation, make finished product, product uses as the aluminium section bar of building frame, door and window, furred ceiling, decorative cover, curtain wall.
Summary of the invention:
The problem that the present invention mainly solves has been to provide a kind of production method of aluminium alloy anode oxide section bar for building, this production method is take magnesium ingot, silicon ingot, copper ingot, aluminium ingot as raw material, take electric smelter, high pressure homogenizer, cylindrical die, extrusion machine, aging oven, rinse bath, oxidation trough as equipment, after the techniques such as the melting by aluminium ingot and alloy material, homogeneous, moulding, extruding, timeliness, cleaning, oxidation, make finished product, the raw material weight proportioning that the present invention uses is: magnesium ingot 0.45-0.60%, silicon ingot 0.35-0.45%, copper ingot 0.05-0.08%, surplus are aluminium ingot.
The present invention can be achieved through the following technical solutions:
A kind of production method of aluminium alloy anode oxide section bar for building, its feature consists of following steps:
(1) magnesium ingot of formula ratio, silicon ingot, copper ingot, aluminium ingot are sent in electric smelter, the temperature in electric smelter is increased to 705-715 ℃, insulation 3.5-4.5 hour, make all materials in electric smelter become molten state.
(2) aluminium alloy of molten state is sent into to high pressure homogenizer, high pressure homogenizer to the molten mass of aluminium alloy under the condition of insulation, push, impact, decompression expansion triple role, time is 8-12 hour, so that the melting physical efficiency of aluminium alloy forms uniform mixture.
(3) the aluminium alloy molten mass after homogeneous being sent into to cylindrical die forms right cylinder and is cooled to 400 ℃ while becoming solid, it is sent into to extrusion machine, the extruding built-in temperature increases to 420-480 ℃, then the extruding of aluminum alloy round cylinder is become to section bar, after being cooled to normal temperature, obtain the aluminium alloy extrusions of moulding, be cut into immediately desired size.
(4) aluminium alloy extrusions that cuts is sent into to aging oven, the temperature in aging oven is increased to 185-195 ℃ slowly, then be incubated 4-5 hour after completion of prescription, aluminium alloy extrusions, from aging oven, taking out, is cooled to normal temperature.
(5) aluminium alloy extrusions after timeliness is sent into to rinse bath, in groove, become to have the dilute aqueous solution of agent of non-phosphate degreasing and non-phosphate film agent, aluminium alloy extrusions soaks 5-8 minute in this liquid, with grease and the natural oxide film of removing aluminium alloy section surface, then will wash except the aluminium alloy extrusions of degrease and natural oxide film, after drying, send into oxidation trough, tank liquor is chemical pure sulfuric acid, concentration is 15-20%, product such as the dyeing of need band, can in tank liquor, add appropriate pigment dyestuff, adjusting the temperature in oxidation trough is 15-17 ℃, connect direct current, controlling current density is 100-200 An Pei ∕ square metre, after oxidization time 0.5-0.8 hour, anodic oxidation finishes, obtain finished product.
Melt temperature in the described electric smelter of step (1) is 710 ℃.
Aging temp in the described aging oven of step (4) is 190 ℃, and aging time is 4.5 hours.
Oxidizing temperature in the described oxidation trough of step (5) is 16 ℃, and galvanic current density is 150 An Pei ∕ square metre, and oxidization time is 0.65 hour.
The invention has the beneficial effects as follows: a kind of production method of aluminium alloy anode oxide section bar for building is provided, and the method is used general-purpose equipment, production technique is simple, with short production cycle, electrolytic solution is cheap, the oxidation operating voltage is low.It is high that product has Vickers' hardness, webster hardness, longitudinal shear resistance eigenwert standard value; Heat transfer coefficient is low, thermal insulation good, fire line is good; Decorative cover indoor and outdoor surface treatment color can be inconsistent, the ornamental advantage such as strong of oxide film.
Embodiment
Embodiment 1:
By accounting for total amount, be 0.45% magnesium ingot, to account for total amount be 0.45% silicon ingot, account for total amount is 0.05% copper ingot, account for total amount is that 99.05% aluminium ingot is sent into electric smelter, temperature in electric smelter is increased to 705 ℃, be incubated 4.5 hours, make all materials in electric smelter become molten state.The aluminium alloy of molten state is sent into to high pressure homogenizer, high pressure homogenizer to the molten mass of aluminium alloy under the condition of insulation, push, impact, decompression expansion triple role, the time is 8 hours, so that the melting physical efficiency of aluminium alloy forms uniform mixture.Aluminium alloy molten mass after homogeneous is sent into to cylindrical die to be formed right cylinder and is cooled to 400 ℃ while becoming solid, it is sent into to extrusion machine, the extruding built-in temperature increases to 420 ℃, then the extruding of aluminum alloy round cylinder is become to section bar, after being cooled to normal temperature, obtain the aluminium alloy extrusions of moulding, be cut into immediately desired size.The aluminium alloy extrusions that cuts is sent into to aging oven, the temperature in aging oven is increased to 185 ℃ slowly, then be incubated 5 hours after completion of prescription, aluminium alloy extrusions, from aging oven, taking out, is cooled to normal temperature.aluminium alloy extrusions after timeliness is sent into to rinse bath, in groove, become to have the dilute aqueous solution of agent of non-phosphate degreasing and non-phosphate film agent, aluminium alloy extrusions soaks 5-8 minute in this liquid, with grease and the natural oxide film of removing aluminium alloy section surface, then will wash except degrease and natural oxide film aluminium alloy extrusions, after drying, send into oxidation trough, tank liquor is chemical pure sulfuric acid, concentration is 15-20%, product such as the dyeing of need band, can in tank liquor, add appropriate pigment dyestuff, adjusting the temperature in oxidation trough is 15 ℃, connect direct current, controlling current density is 200 An Pei ∕ square metre, oxidization time is the anodic oxidation end after 0.8 hour, obtain finished product.
Embodiment 2:
By accounting for total amount, be that 0.525% magnesium ingot, 0.40% silicon ingot, 0.075% copper ingot, 99% aluminium ingot are sent into electric smelter, the temperature in electric smelter is increased to 710 ℃, be incubated 4 hours, make all materials in electric smelter become molten state.The aluminium alloy of molten state is sent into to high pressure homogenizer, high pressure homogenizer to the molten mass of aluminium alloy under the condition of insulation, push, impact, decompression expansion triple role, the time is 10 hours, so that the melting physical efficiency of aluminium alloy forms uniform mixture.Aluminium alloy molten mass after homogeneous is sent into to cylindrical die to be formed right cylinder and is cooled to 400 ℃ while becoming solid, it is sent into to extrusion machine, the extruding built-in temperature increases to 450 ℃, then the extruding of aluminum alloy round cylinder is become to section bar, after being cooled to normal temperature, obtain the aluminium alloy extrusions of moulding, be cut into immediately desired size.The aluminium alloy extrusions that cuts is sent into to aging oven, the temperature in aging oven is increased to 190 ℃ slowly, then be incubated 4.5 hours after completion of prescription, aluminium alloy extrusions, from aging oven, taking out, is cooled to normal temperature.aluminium alloy extrusions after timeliness is sent into to rinse bath, in groove, become to have the dilute aqueous solution of agent of non-phosphate degreasing and non-phosphate film agent, aluminium alloy extrusions soaked 6.5 minutes in this liquid, with grease and the natural oxide film of removing aluminium alloy section surface, then will wash except degrease and natural oxide film aluminium alloy extrusions, after drying, send into oxidation trough, tank liquor is chemical pure sulfuric acid, concentration is 15-20%, product such as the dyeing of need band, can in tank liquor, add appropriate pigment dyestuff, adjusting the temperature in oxidation trough is 16 ℃, connect direct current, controlling current density is 150 An Pei ∕ square metre, oxidization time is the anodic oxidation end after 0.65 hour, obtain finished product.
Embodiment 3:
By accounting for total amount, be that 0.60% magnesium ingot, 0.35% silicon ingot, 0.08% copper ingot, 98.97% aluminium ingot are sent into electric smelter, the temperature in electric smelter is increased to 715 ℃, be incubated 3.5 hours, make all materials in electric smelter become molten state.The aluminium alloy of molten state is sent into to high pressure homogenizer, high pressure homogenizer to the molten mass of aluminium alloy under the condition of insulation, push, impact, decompression expansion triple role, the time is 12 hours, so that the melting physical efficiency of aluminium alloy forms uniform mixture.Aluminium alloy molten mass after homogeneous is sent into to cylindrical die to be formed right cylinder and is cooled to 400 ℃ while becoming solid, it is sent into to extrusion machine, the extruding built-in temperature increases to 480 ℃, then the extruding of aluminum alloy round cylinder is become to section bar, after being cooled to normal temperature, obtain the aluminium alloy extrusions of moulding, be cut into immediately desired size.The aluminium alloy extrusions that cuts is sent into to aging oven, the temperature in aging oven is increased to 195 ℃ slowly, then be incubated 4 hours after completion of prescription, aluminium alloy extrusions, from aging oven, taking out, is cooled to normal temperature.aluminium alloy extrusions after timeliness is sent into to rinse bath, in groove, become to have the dilute aqueous solution of agent of non-phosphate degreasing and non-phosphate film agent, aluminium alloy extrusions soaked 8 minutes in this liquid, with grease and the natural oxide film of removing aluminium alloy section surface, then will wash except degrease and natural oxide film aluminium alloy extrusions, after drying, send into oxidation trough, tank liquor is chemical pure sulfuric acid, concentration is 15-20%, product such as the dyeing of need band, can in tank liquor, add appropriate pigment dyestuff, adjusting the temperature in oxidation trough is 17 ℃, connect direct current, controlling current density is 200 An Pei ∕ square metre, oxidization time is the anodic oxidation end after 0.5 hour, obtain finished product.
Claims (4)
1. the production method of an aluminium alloy anode oxide section bar for building, the raw material that uses comprises: magnesium ingot 0.45-0.60%, silicon ingot 0.35-0.45%, copper ingot 0.05-0.08%, surplus are aluminium ingot, it is characterized in that:
Step (1) is sent into the magnesium ingot of formula ratio, silicon ingot, copper ingot, aluminium ingot in electric smelter, and the temperature in electric smelter is increased to 705-715 ℃, and insulation 3.5-4.5 hour, make all materials in electric smelter become molten state;
Step (2) is sent the aluminium alloy of molten state into high pressure homogenizer, high pressure homogenizer to the molten mass of aluminium alloy under the condition of insulation, push, impact, decompression expansion triple role, time is 8-12 hour, so that the melting physical efficiency of aluminium alloy forms uniform mixture;
Step (3) is sent the aluminium alloy molten mass after homogeneous into cylindrical die and is formed when right cylinder is cooled to 400 ℃ while becoming solid, it is sent into to extrusion machine, the extruding built-in temperature increases to 420-480 ℃, then the extruding of aluminum alloy round cylinder is become to section bar, after being cooled to normal temperature, obtain the aluminium alloy extrusions of moulding, be cut into immediately desired size;
Step (4) is sent into aging oven to the aluminium alloy extrusions that cuts, and the temperature in aging oven is increased to 185-195 ℃ slowly, then be incubated 4-5 hour after completion of prescription, aluminium alloy extrusions, from aging oven, taking out, is cooled to normal temperature;
step (5) is sent the aluminium alloy extrusions after timeliness into rinse bath, in groove, become to have the dilute aqueous solution of agent of non-phosphate degreasing and non-phosphate film agent, aluminium alloy extrusions soaks 5-8 minute in this liquid, with grease and the natural oxide film of removing aluminium alloy section surface, then will wash except the aluminium alloy extrusions of degrease and natural oxide film, after drying, send into oxidation trough, tank liquor is chemical pure sulfuric acid, concentration is 15-20%, product such as the dyeing of need band, can in tank liquor, add appropriate pigment dyestuff, adjusting the temperature in oxidation trough is 15-17 ℃, connect direct current, controlling current density is 100-200 An Pei ∕ square metre, after oxidization time 0.5-0.8 hour, anodic oxidation finishes, obtain finished product.
2. the production method of a kind of aluminium alloy anode oxide section bar for building according to claim 1 is characterized in that: the melt temperature in the electric smelter described in step (1) is 710 ℃.
3. the production method of a kind of aluminium alloy anode oxide section bar for building according to claim 1 is characterized in that: the aging temp in the described aging oven of step (4) is 190 ℃, and aging time is 4.5 hours.
4. the production method of a kind of aluminium alloy anode oxide section bar for building according to claim 1, it is characterized in that: the oxidizing temperature in the described oxidation trough of step (5) is 16 ℃, galvanic current density is 150 An Pei ∕ square metre, and oxidization time is 0.65 hour.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789830A (en) * | 2014-05-30 | 2015-07-22 | 安徽鑫发铝业有限公司 | Acid-resistant aluminum alloy section |
| CN104911666A (en) * | 2015-04-30 | 2015-09-16 | 浙江帝龙新材料股份有限公司 | Processing method of anti-oil-fouling integrated ceiling aluminum basal plate |
| CN106399778A (en) * | 2016-11-28 | 2017-02-15 | 安徽省煜灿新型材料科技有限公司 | Aluminum alloy profile for high-corrosion-resistance curtain wall and preparation method of aluminum alloy profile |
-
2013
- 2013-08-05 CN CN2013103339268A patent/CN103397366A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789830A (en) * | 2014-05-30 | 2015-07-22 | 安徽鑫发铝业有限公司 | Acid-resistant aluminum alloy section |
| CN104789830B (en) * | 2014-05-30 | 2018-01-23 | 安徽鑫发铝业有限公司 | A kind of anti-acid aluminium alloy extrusions |
| CN104911666A (en) * | 2015-04-30 | 2015-09-16 | 浙江帝龙新材料股份有限公司 | Processing method of anti-oil-fouling integrated ceiling aluminum basal plate |
| CN106399778A (en) * | 2016-11-28 | 2017-02-15 | 安徽省煜灿新型材料科技有限公司 | Aluminum alloy profile for high-corrosion-resistance curtain wall and preparation method of aluminum alloy profile |
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