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| what is perforated aluminum sheet |
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Posted by: haomeialu - 02-09-2018, 03:29 AM - Forum: aluminium faq
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Perforated Aluminium Sheets, also known as perforated aluminium plates or perforated aluminium screen, is aluminium sheet has been manually or mechanically stamped or punched to create a pattern of holes, slots, or decorative shapes.
Modern day perforation methods involve the use of technology and machines. Common equipment used for the perforation metal include rotary pinned perforation rollers, die and punch presses, and laser perforations
Perforated Aluminum Sheet 3003 H14 is lighter than both steel and stainless steel perforated sheet, while offering good corrosion resistance, weldability and formability. Perforated Aluminum Sheet is available with various hole size, staggers and sheet thickness.
The Benefits of Quality Perforated Aluminum sheet
Perforated aluminum sheet metal is a popular option, both for functional and aesthetic reasons. Aluminum is very versatile. Compared with many other metals, it is naturally lightweight and easy to work with. It is highly resistant to corrosion, making it ideal for indoor and outdoor applications. Most importantly, aluminum is a cost-efficient material that is well worth the investment.
In terms of longevity, aluminum perforated sheet metal is among the most durable and longest lasting, meaning that whatever your perforated metal feature, it will stand the test of time.
Applications range from decorative surfaces to noise resistant walls and ceilings. This is an excellent option for light and sound control, as well as privacy.
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| What is the punching aluminum gusset plate? |
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Posted by: haomeialu - 02-09-2018, 03:27 AM - Forum: aluminium faq
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Punching aluminous gusset plate is aluminum alloy plate as the base, through cutting, cutting Angle, moulding, aluminous gusset plate surface using a variety of different coating processing all kinds of aluminous gusset plate products, aluminous gusset plate, the main points of two types, one is the domestic outfit integrated aluminous gusset plate, the other is aluminous gusset plate, the home installs aluminous gusset plate started mainly is given priority to with roller coating and frosted two big series; Engineering aluminum gusset plate is commonly used for rolling, powder coating, coating, grinding and other surface coating.
What are the characteristics of the punching aluminum gusset plate?
1. Excellent surface coating performance. Generally USES the high quality of aluminous gusset plate of high quality coatings by imported full automatic high speed coating coating line, board face level off, without off color, coating adhesion is strong, can the erosion of acid, alkali, salt fog, long time don't change color, paint off, fluorocarbon coating plate is the very ideal decorative material of outdoor use, service life is more than twenty years, and easy in maintenance, flush and clean like new.
2. Strong combination fastness. The high quality aluminum gusset plate is composed of high polymer and high polymer materials, which are combined with hot pressure.
3. Strong adaptability. Aluminum gusset plate generally can be used in large temperature change, its excellent performance is not affected.
4. Light weight and high strength. Generally, each board is about 8.5 kg. In the same stiffness, the weight is much lighter than other materials.
5. Acoustic insulation and shockproof. Aluminous model board has the double properties of metal and plastic, its vibration attenuation coefficient is six times that of pure aluminum plate, air sound insulation quantity is better than the other plate, and the coefficient of thermal conductivity small, is the ideal sound insulation, heat insulation, shockproof, construction materials.
6. Safe, non-toxic and fireproof. The core layer of the aluminum gusset plate is non-toxic polyethylene, whose surface is non-flammable aluminum plate, so the surface combustion characteristics comply with the fire resistance requirements of the building codes.
7. Rich in color and wide choice. Aluminum gusset plate color is various, color can combine collocation, harmonious and elegant.
8. Excellent processing performance. Aluminum gusset plate can be cut, saw, milling, pressing, bending, bending and so on with ordinary wood and metal processing tools, and can complete the design requirements accurately.
9. The aluminum gusset plate is flat, with clear and sharp edges, and the ceiling system shows the appearance of neatness, generosity, wealth and elegance, and broad vision. The aluminum gusset plate has the advantages of flame retardant, anticorrosive and moisture-proof, and it is easy to assemble and disassemble, so that each piece can be disassembled independently for easy construction and maintenance. If you want to change and clean ceiling panel, can use magnetic chuck or special patch, quick take kits, also can add in perforated plate on the back cover a layer of sound-absorbing glossy paper or black flame retardant cotton cloth, can reach a certain standard of sound absorption.
What are the specifications of the punching aluminum gusset plate?
The conventional specification of punching aluminum gusset plate: 300mm*300mm, 300*450mm.300*600mm.
General specification of punching aluminum gusset plate: 600*600mm, 800*800mm, 300*1200mm, 600*1200mm.
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| At last! The role of various elements in aluminum alloy |
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Posted by: haomeialu - 02-09-2018, 03:25 AM - Forum: Knowledge & Technique
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![[Image: 640]](https://upload-images.jianshu.io/upload_images/5358802-4fd0a5d3c60d8a20?imageMogr2/auto-orient/strip%7CimageView2/2/w/640)
copper
The maximum solubility of copper in aluminum is 5.65%, and the solubility of copper is 0.45% when the temperature drops to 302. Copper is an important alloy element, which has certain solid solution strengthening effect, and CuAl2 has obvious aging effect. The copper content in aluminum alloy is usually 2.5% ~ 5%, and the copper content is the best when 4%~6.8%, so the copper content of most hard aluminum alloy is in this range. Aluminum copper alloy can contain less silicon, magnesium, manganese, chromium, zinc, iron and other elements.
silicon
The maximum solubility of silicon in solid solution was 1.65% when the eutectic temperature of Al - Si alloy was 577. Although solubility decreases with temperature, such alloys are generally not heat-treatable. Aluminum silicon alloy has excellent casting performance and corrosion resistance. If magnesium and silicon are added to aluminum to form the aluminum magnesium silicon alloy, the enhanced phase is MgSi. The mass ratio of magnesium and silicon is 1.73:1. When designing the composition of al-mg-si alloy, the content of magnesium and silicon is configured on the base. Some of the al-mg-si alloys, in order to increase the strength, add a moderate amount of copper, and add a moderate amount of chromium to offset the adverse effects of copper against corrosion.
The maximum solubility of Mg2Si in al-mg2si alloy is 1.85% in aluminum, and decreases with the decrease of temperature. In the deformed aluminum alloy, the silicon alone is limited to the welding material, and the addition of silicon to aluminum has certain strengthening effect.
magnesium
Al - Mg alloy system equilibrium phase diagram rich aluminum part though the solubility curve shows that the solubility of magnesium in aluminium greatly decreases with temperature drop, but in most of the deformation of industrial aluminum alloy, magnesium content are less than 6%, and silicon content is low, this kind of alloy can't heat treatment to strengthen, but good weldability, corrosion resistant, with moderate intensity. Magnesium's reinforcement to aluminum is obvious, with each increase of 1% magnesium, the tensile strength is about to increase by about 34MPa. If you add less than 1% of manganese, you may be reinforcing. Therefore, manganese can decrease the content of magnesium and reduce the tendency of thermal cracking. Besides, manganese can also precipitate the Mg5Al8 compound and improve the corrosion resistance and welding properties.
Manganese element
The maximum solubility of Mn in the solid solution was 1.82% when the eutectic temperature was 658. The strength of alloy increases with the increase of solubility, and when the manganese content is 0.8%, the elongation reaches the maximum. Al-mn alloy is non - aging hardening alloy, which is non - heat - treatment hardening. Manganese can prevent the recrystallization process of aluminum alloy, improve recrystallization temperature, and can significantly refine the recrystallization grain. The refinement of recrystallized grains is mainly an obstacle to the growth of recrystallized grains by the dispersion of MnAl6 compounds. Another function of MnAl6 is to dissolve impurities iron, forming (Fe, Mn) Al6, reducing the harmful effects of iron. Manganese is an important element of aluminum alloy. It can be added to form al-mn binary alloy separately, and more is added with other alloy elements, so most aluminum alloys contain manganese.
zinc
The solubility of Zn in aluminum was 31.6%, while at 125, the solubility decreased to 5.6%. Zinc alone is added to aluminum, and the strength of aluminum alloy is very limited under the condition of deformation. Meanwhile, stress corrosion cracking and tendency are also present, thus limiting its application. Zinc and magnesium were added to the aluminum to form the strengthening phase Mg/Zn2, which had a significant strengthening effect on the alloy. When Mg/Zn2 content increased from 0.5% to 12%, the tensile strength and yield strength were significantly increased. The content of magnesium is higher than that of the superhard aluminum alloy required to form Mg/Zn2 phase. The ratio of zinc and magnesium is controlled at about 2.7, and the stress corrosion cracking resistance is the largest. If copper is added on the basis of al-zn-mg, it will form al-zn-mg-cu alloy, and the base strengthening effect is the largest in all aluminum alloys, and is also an important aluminum alloy material in aerospace, aviation industry and electric power industry.
Iron and silicon
Iron in Al - Cu - Mg - Ni - Fe in the forging of aluminum alloy, silicon in Al - Mg - Si is wrought aluminium and in Al - Si electrode and aluminum silicon alloy casting, all of the alloy elements and in its aluminium alloy, silicon and iron is a common impurity elements, have obvious influence on performance of alloy. They mainly exist in FeCl3 and free silicon. When the silicon is greater than the iron, it forms the beta -FeSiAl3(or Fe2Si2Al9) phase, while the iron is greater than the silicon, forming the alpha-fe2sial8 (or Fe3Si2Al12). When the ratio of iron and silicon is not at that time, it will cause cracks in the castings, and when the iron content in cast aluminum is too high, the casting will be brittle.
Titanium and boron
Titanium is a commonly used additive element in aluminum alloy, and is added in the form of al-ti or al-ti-b intermediate alloy. Titanium and aluminum form TiAl2 phase, which becomes the non-spontaneous core of crystallization, and the function of the cast structure and weld organization is refined. The critical content of titanium was about 0.15% when the al-ti alloy was produced. If boron existed, the reduction was small to 0.01%.
chromium
The addition of chromium in al-mg -Si, Al-Mg-Zn and Al-Mg alloys. In 600 ℃, chrome aluminum solubility of 0.8%, when the room temperature basically insoluble. (CrFe) Al7 and chromium in aluminium (CrMn) Al12 intermetallic compounds, such as hinder recrystallization nucleation and growth process, the alloy has certain reinforcement, also improve alloy toughness and reduce the stress corrosion cracking sensitivity. However, the sensitivity of quenching was increased, and the anodic oxide film was yellow. The addition of chromium in aluminum alloy is generally not more than 0.35%, and decreases with the increase of transition element in alloy.
strontium
Strontium is a surface active element, and strontium can change the behavior of intermetallic compounds in crystallography. Therefore, the modification can improve the plasticity and final product quality. In recent years, the use of sodium in al-si alloy has been replaced by the advantages of long time, good effect and good reproducibility. For extruded aluminum alloy, 0.015%0.03% strontium was added to make the ingot-alfesi phase change into the han-type, which reduced the uniformity of ingots by 60% and 70%, and improved the mechanical properties and plasticity of the materials. Improve surface roughness of products. For the deformation of high silicon (10% 13%), adding 0.02% 0.07% strontium aluminium alloy elements can make the crystal to reduce to a minimum, at the beginning of mechanical properties was also significantly increased, tensile strength б b from 233 mpa to 233 mpa, yield strength б 0.2 from 204 mpa to 210 mpa, elongation б 5 increased from 9% to 9%. The addition of strontium in the eutectic al-si alloy can reduce the size of the initial silicon particles and improve the plastic processing properties, which can be successfully rolled and cold rolled.
zirconium
Zirconium is also a common additive in aluminum alloys. In the aluminum alloy, the addition of 0.1%-0.3%, zirconium and aluminum ZrAl3 compounds can inhibit the recrystallization process and refine the recrystallized grains. Zirconium can also refine casting tissue, but less than titanium. When zirconium is present, it reduces the effect of titanium and boron refining grains. In al-zn-mg-cu alloy, zirconium is suitable to replace chromium and manganese to refine the recrystallization structure due to the effect of zirconium on quenching sensitivity than chromium and manganese.
Rare earth elements
The rare earth elements are added to the aluminum alloy, so that the aluminum alloy can be melted in the process of cooling, refining the grain, reducing the spacing of the secondary crystals, reducing the gas and inclusion in the alloy, and making the inclusions tend to spherify. It can also reduce the surface tension of melt, increase fluidity, and be beneficial to casting ingot, which has obvious influence on process performance. The amount of rare earth added is about 0.1%at%. The addition of mixed rare earth (la-ce-pr -Nd, et Al.) made Al-0.65 Mg-0.61%Si alloy aging G? The critical temperature in P area is reduced. Magnesium - containing aluminum alloy can stimulate the metamorphism of rare earth elements.
The impurity elements
Vanadium formed VAl11 refractory compound in aluminum alloy, and refined grain function in the process of melting, but less than titanium and zirconium. Vanadium also has the effect of refining and recrystallization and increasing the temperature of recrystallization.
Calcium is very low in solid solubility in aluminum alloy, forming CaAl4 compound with aluminum, calcium is the superplastic element of aluminum alloy, about 5% calcium and 5% manganese aluminum alloy has superplasticity. Calcium and silicon are formed and are insoluble in aluminum. As a result of reducing the solid solubility of silicon, the conductivity of industrial pure aluminum can be slightly improved. Calcium can improve the cutting performance of aluminum alloy. CaSi2 does not enhance heat treatment of aluminum alloys. Trace calcium helps to remove hydrogen from aluminum.
Lead, tin and bismuth elements are low melting point metals. They have a low solubility in aluminum and slightly reduce the strength of alloy, but can improve the cutting performance. The bismuth expansion in the solidification process is beneficial to the retraction. The addition of bismuth in the high magnesium alloy prevents the sodium brittle.
Antimony is mainly used as metamorphant in casting aluminum alloy, and deformed aluminum alloy is seldom used. Bismuth is only used in Al-Mg deformed aluminum alloy to prevent sodium brittleness. Antimony elements were added to some Al-Zn-Mg-Cu alloys to improve the performance of hot and cold pressing.
Beryllium can improve the structure of the oxide film and reduce the loss and inclusion during melting. Beryllium is a toxic element that can cause allergic intoxication. Therefore, it is not possible to contain beryllium in the aluminium alloy exposed to food and beverages. The amount of beryllium in the welding material is usually controlled below 8. G /ml. The aluminium alloy used for welding the substrate should also control the content of beryllium.
Almost don't dissolve in sodium in aluminum solid solubility is less than 0.0025%, the largest of the low melting point of sodium (97.8 ℃), sodium exist in the alloy, adsorption on the surface of the dendrite in the process of solidification or grain boundary, hot working, sodium form liquid adsorption layer on the grain boundary, produce brittle cracking, NaAlSi compound formation, no free sodium exist, does not produce sodium "fragile". When the magnesium content exceeds 2%, magnesium takes the silicon, precipitates out the free sodium and produces "sodium brittle". Therefore, magnesium alloys are not allowed to use sodium salt flux. The method of preventing "sodium embrittlement" has the method of chlorination, which causes the sodium to form NaCl into the slag, adding bismuth to produce Na2Bi into the metal matrix. Adding antimony to Na3Sb or adding rare earth can also play the same role.
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| What is the effect of wood grain aluminum buckle |
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Posted by: aluhm - 02-09-2018, 03:17 AM - Forum: aluminium faq
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The wood grain aluminium gusset plate is a kind of new type of furniture condole top material that appeared in the 1990s, mainly used in kitchen and toilet condole top project. Because aluminous gusset plate of the whole project using full metal building, on the life and the unbroken ability, superior in PVC material and plastic material, at present has become the home installs aluminous gusset plate one of the indispensable material in the whole project. People often liken the aluminum to: 'hutch hat' is because he has better protection performance and beautification for kitchen and toilet! At present, the aluminum plate industry has been fully popularized in all the large and medium-sized cities in China, and has been mature and comprehensive. Auxiliary introduction: domestic aluminum gusset plate in domestic according to the modelling classification main divide into: right Angle aluminous gusset plate and inclined Angle aluminous gusset plate. Swab (because of the Angle against the late work, so widely use: right, but the right Angle and Angle and no much difference in price), the home installs aluminous gusset plate in the domestic classified according to surface treatment process is mainly divided into: spraying aluminous gusset plate, roller coating aluminous gusset plate, the effect of aluminous gusset plate of three broad categories. (three kinds of aluminous gusset plate is gradually increasing, in turn, the service life of the back, higher performance) in the home installs aluminous gusset plate, the effect of aluminous gusset plate according to the source of the surface film can be divided into: domestic pearl effect of aluminous gusset plate, imported pearl effect of aluminous gusset plate, LG pearl effect of aluminous gusset plate (effect of aluminous gusset plate, in turn, and performance and service life increase gradually in the future) spraying aluminous gusset plate of normal use fixed number of year should be as follows: 5-10 years roll aluminous gusset plate of normal use fixed number of year should be as follows: the effect of aluminous gusset plate normal 7 to 15 years of age should be: 10 to 30 years special note: the above fixed number of year, is in accordance with the standards of China lion dragon aluminous gusset plate to divide. At present, there are a lot of small workshops in the market for the use of the coated aluminum buckle for 5 years. So, pay particular attention to the selection of products.
Technical characteristics of wood grain aluminum gusset plate:
1. Excellent surface coating performance. High-quality aluminum generally USES the high quality coating, by importing automatic high-speed coating, coating line board face level off, without off color, coating adhesion is strong, can the erosion of acid, alkali, salt fog, long time don't change color, paint off, fluorocarbon coating plate is the very ideal decorative material of outdoor use, service life is more than twenty years, and easy in maintenance, flush and clean like new.
2. Strong combination fastness. The high quality aluminum plastic plate is composed of high polymer and polymer materials. It is usually subjected to two hours of boiling water test without adhesive layer failure.
3. Strong adaptability. Aluminum plastic plate can be used in large temperature change, its excellent performance is not affected.
4. Light weight and high strength. Generally, each board is about 8.5 kg. In the same stiffness, the weight is much lighter than other materials.
5. Acoustic insulation and shockproof. Aluminous model board has the double properties of metal and plastic, its vibration attenuation coefficient is six times that of pure aluminum plate, air sound insulation quantity is better than the other plate, and the coefficient of thermal conductivity small, is the ideal sound insulation, heat insulation, shockproof, construction materials.
6. Safe, non-toxic and fireproof. The core layer of the aluminum plastic sheet is non-toxic polyethylene, whose surface is non-flammable aluminum plate, so the surface combustion characteristics comply with the fire resistance requirements of the building codes.
7. Rich in color and wide choice. Aluminous plastic board color is various, color can combine collocation, harmonious and elegant.
8. Excellent processing performance. Aluminum plastic plate can be used for cutting, sawing, milling, pressing, bending, bending, etc., with ordinary wood and metal processing tools.
9. The aluminum gusset plate is flat, with clear and sharp edges, and the ceiling system shows the appearance of neatness, generosity, wealth and elegance, and broad vision. The aluminum gusset plate has the advantages of flame retardant, anticorrosive and moisture-proof, and it is easy to assemble and disassemble, so that each piece can be disassembled independently for easy construction and maintenance. If you want to change and clean ceiling panel, can use magnetic chuck or special patch, quick take kits, also can add in perforated plate on the back cover a layer of sound-absorbing glossy paper or black flame retardant cotton cloth, can reach a certain standard of sound absorption. Green landscape building materials is professional aluminum gusset plate manufacturer of metal aluminum fastener manufacturers.
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| What is the difference between the g-type aluminum strip and the h-type aluminum stri |
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Posted by: haomeialu - 02-09-2018, 03:15 AM - Forum: aluminium faq
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G type aluminum strip buckles and H type aluminum bar button: the difference between a button G and H in shape and specifications on all have a lot of the same place, but the price with the keel and installation structure is different, although to seduce a type installation, but green small make up recommend G buckle.
Aluminum strip thickness: 0.45mm-1.0mm.
Aluminum strip width: 200mm, 300mm, 400mm, 500mm.
Aluminum strip height: 15mm, 20mm.
Aluminum strip length: within 6 meters can be customized.
Aluminum buckle installation structure: hook type.
Surface treatment of aluminum strip: electrostatic powder coating.
Aluminum bar clasp style: seamless.
Button G and H on the condole top of two products style, small make up think G buckle installation, had better choose to have seam type can make the ceiling more stereo feeling and stylish, and can will G buckle the advantage of perfect, and live alone to identify the degree.
Button and H is the biggest advantage of seamless splicing, board face level off, but that advantage is not relative in article aluminum buckle series, just because of installation, seduce a structure is therefore appear different article and other fastener products.
Specification of aluminum bars:
The common width of aluminum strip is 50mm, 100mm, 150mm, 200mm, 300mm and 400mm.
The commonly used thickness of aluminum strip is divided into 0.5? Mm to 1.2 mm.
Strip gusset plate adopts continuous roll forming, the conventional maximum length is 8000mm.
Surface coating general powder electrostatic spraying or polyester paint spraying, roller coating, wood grain, can also choose brushed surface treatment.
G article slit type button is made of aluminum alloy plate or perforated plate after electrostatic powder spraying, have fire prevention, moistureproof, sound-absorbing function, the board face and the line of the whole and continuity is strong, give a person a kind of comfortable and carefree feeling. It is widely used in airport, hall, station and corridor.
H closed buckle smallpox to keel, can assemble different specifications of the slats, structure tight and firm, between plates line is fluent, more tightly, give a person the sense with happy, bright and clean, elegant, but also according to the designer's idea in a different color, or width of the strip mixed install and use, makes the design more changes. H-type closed strip is suitable for airport, station, shopping square, gymnasium, hall, shopping mall and residence.
G article type fastener installation of good effect and Great Wall board smallpox effect is the same, just different installation place, one is installed in metope adornment wall, one is installed on the smallpox smallpox decoration.
The keel of the G type buckle is divided into two kinds, one is to have the seam type buckle to install keel, one is the seamless buckle to install keel. Depending on the installation of the keel and the different installation styles of the buckle, the price is different, and the keel of the G button is the more expensive one in the aluminum strip series.
The G and H buttons have many similarities in appearance and specification, but the price is different from the keel and the installation structure, although the same is the hookup type installation, but small make up the recommended G button.
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| Can aluminum sheets be categorized in those ways? |
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Posted by: haomeialu - 02-09-2018, 03:13 AM - Forum: aluminium faq
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At present, aluminum veneer is one of the most active architectural decoration materials in the market. After decades of development, the aluminum sheet has evolved from the original single product to a variety of types, and to this day, what kinds of aluminum veneers are available? Let's take a look at the aluminum veneers that are currently active in the building decoration materials market.
1. Aluminum veneer style classification according to the shape of aluminum veneer, the aluminum sheet can be divided into different types:
1. Conventional aluminum single board: square aluminum single board or rectangular aluminum single board (with different colors for spraying);
2. Imitation wood grain aluminum veneer: with grain pattern;
3. Imitation stone aluminum veneer;
4. Perforated aluminum veneer;
5. Hollow aluminum veneer;
6. Single aluminum single board;
7. Hyperbolic aluminum veneer;
8. Other special-shaped aluminum veneers.
The surface decoration effect of aluminum veneer can be divided into the following categories according to the surface decoration effect of aluminum veneer:
1. Coated aluminum veneer;
2. Aluminum oxide single board;
3. Laminated aluminum veneer;
4. Color printing aluminum veneer;
5. Brushed aluminum single board;
Mirror aluminum veneer.
3. The application range of aluminum single board can be divided into the following parts according to different parts of aluminum single board:
1. External curtain wall aluminum veneer;
2. Interior aluminum veneer;
3. Aluminum sheet of baozhu;
4. Girder aluminum single board;
5. Aluminum single board ceiling, also known as aluminum single board ceiling;
4. The performance classification of aluminum veneer is classified according to the different functions of aluminum veneer, and it is classified according to the performance of aluminum single board. There are several types of aluminum single board:
1. Fireproof aluminum veneer;
2. Antibacterial and anti-mold aluminum veneer;
3. Anti-static aluminum veneer.
The above is a brief introduction to the daily use of aluminum veneer in haomei aluminium , and more information will be updated and updated.
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| What can we do to the dark spots on an aluminum sheet? |
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Posted by: aluhm - 02-08-2018, 07:56 AM - Forum: aluminium faq
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Because of the excellent characteristics, aluminum sheet can be seen everywhere in daily life, it has a layer of oxide film on the surface, which makes the use period last longer. But in the use process, you may still found some dark spots attached on the surface of the aluminum sheet! What is the reason? How can we prevent from it? Don’t worry, with more than 20 years manufacturing experience, HAOMEI Aluminum can help you solve this problem.
If there are dark spots on the surface of aluminum sheet, the problem may usually occur when painting silver and spray on the aluminum sheet. First of all, it may occur in the spray, if the mouth of the seal is not strict, so there are some organic inclusion in the spray and is sprayed on the surface of the aluminum sheet. Moreover, some organic gases will also cause corrosion of the surface of the aluminum sheet and formation of dark spots on the surface. While the common gas course effects and corrosion of aluminum sheet plate is mostly sulfur-containing gases. Secondly, when the aluminum sheet is in the plating, if a part of the process is fail, it will also lead to the dark spots on the surface, if the environment is closed, it may be because the plating conditions or process problem, which led to the emergence of dark spots. Therefore, when the aluminum sheet is silver-plated, in order to prevent the impact of sulfur elements, after the parts after silver plating, timely store the aluminum sheet and keep sealed, and then placed in dry environment, it can be a good way to prevent this problem effectively.
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| Where can you buy the 5a06 aluminum sheet? |
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Posted by: aluhm - 02-08-2018, 07:54 AM - Forum: aluminium faq
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5A06 aluminum sheet is a kind of high magnesium alloy, which is AL-Mg 5A06, which has high strength and corrosion resistance. Weld with argon arc welding, air tightness and weld plastic welding and spot welding can, the welded joint strength as the matrix strength 90~95%, machinability is good.
Final usage: Aircraft skin parts, aircraft welding parts, etc.
1, 5A06 aluminum alloy plate sheet has high strength and corrosion resistance;
2, welding seam, air tightness and weld plastic welding and spot welding can, the welded joint strength as the matrix strength 90-95%, machinability is good;
3, 5A06 aluminum alloy plate sheet has no oil, no aluminum surface waves, no scratches, no roller, uniform cutting edges and burr;
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| Why do stadiums sell bottled drinks without bottle caps? |
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Posted by: aluhm - 02-08-2018, 07:52 AM - Forum: aluminium faq
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I must admit I always thought is was a marketing strategy. It's not really convenient to keep a bottle without the bottle cap. Bottles without a cap might be consumed faster than with a cap, possibly boosting sales. Of course liquid can be poured in plastic or paper cups instead, but this is less convenient to do than just hand out plastic bottles. Unfortunately I haven't found anything that supports this initial assumption, except for the following article covering a part of the profitability of plastic bottles and the reason why it might be hard to ban them completely or replace them with paper cups.
They are profitable for stadiums because concessionaires can dispense them more quickly than beer poured from a keg or can. Also, at $5 to $6 and more, the 16-ounce and 20-ounce bottles include a nice mark up, experts state. Fans like them because they are easier to carry than plastic cups and lack the suds of draught beer.
As mentioned by Stephanie Vardavas the main consideration for removing bottle caps are safety issues, i.e. to make them less effective as a weapon, as is mentioned on several sites as well.
E.g. at a game of the Cleveland Browns against Jacksonville Jaguars in 2001 there was a bottle-throwing incident, referred to as "bottlegate", where fans got upset with a referee's decision and started throwing bottles. The Giants, another football team, subsequently decided to ban bottled drinks
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