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| What is the PVC aluminum trim coil? |
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Posted by: KamorkasOa - 06-06-2018, 07:48 AM - Forum: aluminium faq
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Some aluminum manufacturers refer to striated coil as pvc aluminum trim coil.The PVC paint used for striated coil is thicker than the paint used for smooth coil. The dry film thickness of the paint on striated coil measures about 3.5 mils, compared to the 1-mil paint film on smooth coil. Because the PVC coating is applied so thickly, it forms striation patterns as it dries.
We have a wide selection of products from Aluminum Trim Coils to PVC Coated Textured Trim Coil.
![[Image: Big-roll.jpg]](http://www.coil-aluminum.com/images/Big-roll.jpg)
Aluminum trim coil is an attractive, lasting way to finish any Soffit, Fascia, Siding, Window or Rainware job in your desired color. Available in a variety of colors and hues, our trim coil holds color and resists the toughest corrosive elements while still giving your home the look you want.
Trim coil an be used to create decorative accents and other architectural designs. It is designed to cover and protect hard to maintain areas of the home’s exterior. All rolls are painted white inside.
Aluminum coil stock, which has been used for years to cover trim on re-siding jobs, is becoming standard on new homes, too Ñ part of the trend toward low-maintenance exteriors. Manufacturers of aluminum trim coil offer two types of finish: smooth and striated. Smooth trim coil, which has been on the market the longest, is a thin aluminum flashing finished with polyester or acrylic paint. Striated coil has a textured finish, providing a better visual match to vinyl siding.
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| How to Install Aluminum Trim Coil |
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Posted by: KamorkasOa - 06-06-2018, 06:52 AM - Forum: aluminium faq
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Many sheet metal manufacturers produce aluminum trim coil that you can install on your house to cover base materials to provide a finishing feature. Typical uses include the trim for windows, soffit boarding, siding and roof edging. Aluminum trim coil comes in a large range of colors, widths and gauge thicknesses to complement your trim design needs. Knowing how to install the trim allows you to create a professional finish that is durable and cost-effective over the long term.
…![[Image: aluminum_foil_6-300x225.jpg]](http://www.aluminiumstrip-hm.com/wp-content/uploads/2017/08/aluminum_foil_6-300x225.jpg)
[img=300x0]http://www.aluminiumstrip-hm.com/wp-content/uploads/2017/08/aluminum_foil_6-300x225.jpg[/img]industrial pure aluminum coil stock
Step 1
Take length measurements of the trim features, such as the top of the window and soffit lengths, to determine the required size for the sheet metal brake. A sheet metal brake is a simple mechanical device that clamps and bends thin metal, which you need to bend the aluminum trim coil. Typically, tool hire outlets rent out up to 12-foot long sheet metal brakes that produce quality bends and save you time when you are creating the trim shape.
Step 2
Cut the aluminum trim coil to the required length using aviation snips or a utility knife depending on the metal thickness. Use a straightedge to guide the utility knife to make a neat cut. Create a curve in the aluminum to produce a rounded trim edge by using the aviation snips.
Step 3
Measure and pencil mark the aluminum coil trim length where you need to shape a bend to cover the base substrate, such as over a J-channel fixing or over a roof edge. Position the aluminum in the sheet metal brake and bend the aluminum according to the brake manufacturer’s instructions, as these differ between companies. Typically, you clamp the metal and apply leveraged force to the aluminum to create the bend.
Step 4
Fasten the aluminum trim with coated aluminum nails that match the trim color to blend in the fastening points. Ensure you leave a standard 1/16-inch gap between the side edge of the trim and protruding features such as a door frame so that the aluminum can expand and contract in different ambient temperatures. Install the trim into an exterior-grade wood substrate to a standard depth of 3/4 inch, leaving a 1/16-inch gap behind the nail head to allow for natural aluminum expansion.
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| Would a sheet of aluminum or sheet of stainless steel reflect more infrared radiation |
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Posted by: ircasodle - 06-05-2018, 07:26 AM - Forum: aluminium faq
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First of all, to have good reflectivity in the IR part of the spectrum, you need to have very flat surfaces, so you will need a polished surface. Stated that, Aluminium has far better reflection than steel. When not oxidixed. You can have reflectivities of up to 97%, with 92-95% easily attainable, while with steel a reflectivity of 90% is a very good value. Unfortunately, the reflectivity of oxidixed aluminium can be as bas as 70% and unprotected aluminium oxides much faster than stainless steel. The ideal solution is a properly treated aluminium foil (or a plastic foil with deposited aluminium). The only place in which I'd use steel is for a second of a two stages concentrator, in which temperatures could rise so high that you need a metal alloy without any plastic (either substrate or varnish). For that applicaiton, I'd go for stainless steel sheets.
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| What are the reasons for aluminum roofing sheet’s black dots? |
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Posted by: KamorkasOa - 06-05-2018, 07:24 AM - Forum: aluminium faq
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In the aluminum roofing sheet factory or the application process, sometimes there will be the above black spot situation, what is this situation? Let’s look at it. First of all, the aluminum roofing sheet materials, aluminum roofing sheet manufacturers produced by the aluminum roofing sheet cover is 0.5mm thick LF21 aluminum plate processing. This type of aluminum roofing sheet has many parts of the same material, similar shape and same process, but similar shape parts processed at the same time have no such failure. And it’s not the fault of a defective raw material. It’s on the processing technology, cover silver plating process for roughly: outgoing parts machining pretreatment ─ ─ ─ ─ galvanized zinc leaching plating copper electroplating silver ─ ─ painting 823 ─ ─ dip coating into the Treasury.
![[Image: main-qimg-b53b613313b0c734c6207b2b72a1a0f4]](https://qph.fs.quoracdn.net/main-qimg-b53b613313b0c734c6207b2b72a1a0f4)
In the process of aluminum roofing sheet plating, first of all, it is possible that some production link of plating has changed, leading to failure. However, the investigation found that no such failure occurred in similar parts processed at the same time without any change in production conditions. Therefore, the factors of changing electroplating production conditions are excluded. According to the previous production experience, the most common cause of discoloration of silver plating parts is the influence of sulfur element on silver plating layer.
In the past, silver plated parts have not been packaged and sealed in time and stored in the electroplating factory house for a long time. However, the defective parts are timely packaged and stored in dry containers after silver plating. It can be seen that this is not affected by the air atmosphere in the workshop. In the spray painting process, it was found that the top cover of the spray painting processing, the whole batch of rerepair records. The most important reason is that the gap is not plugged, allowing the paint mist to enter and adhere to the surface of the silver plating layer and cannot be removed. In order to prevent this kind of failure, it is recommended to seal the gap with 3M adhesive tape in the process to prevent the paint fog from entering.
Through such elimination method, we found the root of the problem, and we immediately took measures to prevent the recurrence of hidden dangers, so that the surface of aluminum roofing sheet is as bright as new, and the delivery rate is greatly increased
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| What are the advantage and disadvantage of aluminum as compared to copper? |
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Posted by: KamorkasOa - 06-01-2018, 07:40 AM - Forum: aluminium faq
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The difference between aluminum and copper wire is largely in their usage within utilities, resistance, conductivity, weight and cost. Aluminum is in use by the utility companies for the transmission of electricity since the early 1900’s. Aluminum seems to have more advantages over the older copper wire in terms of weight, flexibility and cost, as it is lighter, more flexible, and less expensive.
Aluminum wiring was preferred over copper wiring largely due to the rising factor of the price of copper, and therefore, aluminum wiring was economical. Aluminum alloy building wires, called the 800 alloy, is also used for low voltage feeders, saving on costs when compared to copper, which is also significantly heavier in weight as well. Aluminum building wires have half the weight of copper, with 50% greater area than copper to carry the same current, but aluminum wires need a larger wire gauge than copper to carry the same weight. Increased copper prices have also given rise to the use of aluminum wires during the 1970’s. Aluminum wiring can be just as safe as copper if properly installed, as aluminum wiring is unforgiving in the case of improper installation.
Aluminum wiring has the ‘cold creep’ phenomena, as when it warms up, it expands, and it contracts when cooled down. It is unlikely for copper to lose tightness like in the case of aluminum. Aluminum oxidizes and corrodes when in contact with certain types of metal, whereas copper is safer and also more fireproof compared to aluminum. Aluminum and copper wire can also be connected together, but this needs to be handled with extra care, because if the wires are not connected together using special crimp devices, or anti-oxidant grease, they will catch fire once the conductor is heated. In order to reply to the question that if aluminum wiring is as good as copper wiring, we reply negative. Aluminum wires have potential hazards, and that is aluminum’s reactivity with the oxygen in the air which can cause a connection to overheat and fail, and possibly causing a fire. Due to this risk factor, copper wires have again taken the place of aluminum, despite the fact that aluminum is cheaper.
One can also compare the weight and color of the two conductors. Copper wire is heavier, and aluminum is lighter and silver grey. The other main difference between copper and aluminum wires is the resistance of the material. Aluminum and copper are both the most commonly used conductors, with positive and negative characteristics. Copper not only has a higher conductivity than aluminum, but is more ductile, with relatively high tensile strength, and can be soldered. Aluminum has less conductivity, about 60 percent of copper, but its lightness enables it to make long spans possible.
1. Aluminum wires are corrosive and can cause fire.
2. Aluminum wires are coated with special grease and wiring devices to prevent any accident due to heat.
3. Copper wires are tensile and higher in conductivity than aluminum, which is also less ductile.
4. Aluminum wires are lighter than copper and make long spans possible, whereas copper wires can resist more than aluminum, and can be soldered.
5. Aluminum wires expand in high temperatures and contract in low temperatures when compared to copper, which can withstand thermal change
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| Why do people choose china 1100 aluminum sheet |
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Posted by: KamorkasOa - 06-01-2018, 02:03 AM - Forum: aluminium faq
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As a relatively high quality and cheap material, china 1100 aluminum sheet has many advantages, such as light weight, corrosion resistance, high strength, easy processing, long life, recyclable, beautiful surface, etc. Once it is published, it sweep steel and iron with unstoppable force and then occupy a place in many industries. In the world market, China aluminum sheet is famous for the low price and high performance, so customers prefer to select china aluminum sheet suppliers.
![[Image: china-1100-aluminum-sheet-0523.jpg]](https://www.aluminumsheet.net/wp-content/uploads/2018/05/china-1100-aluminum-sheet-0523.jpg)
In the consumption structure of 1100 aluminum sheet, the construction industry accounts for 33.7% of the total, followed by the transportation and power industries. The consumption of aluminum sheet in these three industries accounted for 64% of the consumption of aluminum sheet in China. With the increase of domestic supply capacity, china 1100 aluminum sheet have achieved exports successively since 2005. In 2010, China exported 1.8 million tons of aluminum plates. With the increase of production capacity year by year, currently China’s aluminum sheet production capacity has accounted for more than half of the world’s total production capacity, becoming the largest exporter of aluminum sheet plates, and with the further improvement of aluminum sheet performance, the market prospects of aluminum sheet will inevitably become more and more extensive.
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| Bright future of china anodized aluminum sheet |
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Posted by: KamorkasOa - 06-01-2018, 02:00 AM - Forum: Knowledge & Technique
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As one the leader of the high level aluminum sheet plate manufacturers, with more than 20 years of senior technical production team, Haomei aluminum becomes a famous supplier of china anodized aluminum sheet, the production has its own unique advantages. With the wide application in decoration and applicants, anodized aluminum sheets has wide and bright develop future. As professional anodized sheet supplier,we are proud to recommend our outstanding features to you all.
![[Image: china-anodized-aluminum-sheet-0531.jpg]](https://www.aluminumsheet.net/wp-content/uploads/2018/05/china-anodized-aluminum-sheet-0531.jpg)
china anodized aluminum sheet
1, The appearance of Haomei anodized aluminum sheet has super metallic texture, rich colors, diverse patterns, and acceptable customized processing.
2, processing: Haomei anodized aluminum sheet can be directly punched, bending parts to burst.
3, performance: washable, scratch resistant, antistatic, non dust absorbing, easy to clean.
4, color difference: 9 major processing measures to effectively control chromatic aberration.
5, shipment period: fast production, short delivery time.
All in all, with the development of economy, the rapid development of all walks of life, such as architectural decoration, electronics, electrical appliances, cars and other industries, the demand for china anodized aluminum sheet is increasing, and the capacity of anodized aluminum sheet will increase, and the future of this industry is very optimistic.
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| Do tea and rooibos contain too much aluminum? |
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Posted by: KamorkasOa - 05-31-2018, 08:00 AM - Forum: aluminium faq
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While aluminum is the third most abundant element on Earth, it may not be good for our brain, something we learned studying foundry workers exposed to high levels. Although the role of aluminum in the development of brain diseases like Alzheimer’s is controversial, to be prudent, steps should probably be taken to lessen human exposure to this metal.
There are a number of aluminum-containing drugs on the market (like antacids, which have the highest levels), though aluminum compounds are also added to processed foods such as anti-caking agents in pancake mix, melting agents in American cheese, meat binders, gravy thickeners, rising agents in some baking powders and dye-binders in candy. Therefore, it’s better to stick to unprocessed, natural foods. But if you cook those natural foods in an aluminum pot, a significant amount of aluminum can leach into the food (compared to cooking in stainless steel).
When researchers tried the same experiment with tea, they got a few milligrams of aluminum regardless of what type of pot they used, suggesting that aluminum was in the tea itself. Indeed, back in the 1950s researchers noticed that tea plants tended to suck up aluminum from the soil. But it’s the dose that makes the poison. According to the World Health Organization, the provisional tolerable weekly intake—our best guess at a safety limit for aluminum—is two mg per healthy kilogram of body weight per week, which is nearly a milligram per pound. Someone who weighs around 150 pounds probably shouldn’t ingest more than 20 mg of aluminum per day.
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Up to a fifth of aluminum intake may come from beverages, so what we drink probably shouldn’t contribute more than about four mg a day, the amount found in about five cups of green, black or oolong tea. So should we not drink more than five cups of tea a day?
It’s not what you eat or drink, it’s what you absorb. If we just measured how much aluminum was in tea, it would seem as though a couple cups could double aluminum intake for the day. But if we measure the level of aluminum in people’s bodies after they drink tea, it doesn’t go up. This suggests that the bioavailability of aluminum in tea is low, possibly because most of the extractable aluminum in brewed tea is strongly bound to large phytonutrients that are not easily absorbed, so the aluminum just passes right through us without actually getting into our bodies. In fact, probably more than 90 percent of the aluminum in tea is bound up.
One study out of Singapore did show a large spike in aluminum excretion through the urine after drinking tea compared to water. The only way for something to get from our mouth to our bladder is to first be absorbed into our bloodstream. But the researchers weren’t comparing the same quantity of tea to water. They had the study subject chug down about eight and a half cups of tea, or drink water at their leisure. Therefore, the tea drinkers peed a lot more, so the aluminum content cup-for-cup was no different for tea versus water. This suggests that gross aluminum absorption from tea is unlikely and that only little aluminum is potentially available for absorption.
So although as few as four cups of tea could provide 100 percent of our daily aluminum limit, the percentage available for absorption in the intestine may be less than 10 percent. It is therefore unlikely that moderate amounts of tea drinking can have any harmful effects—for people with normal aluminum excretion. Tea may not, however, be a good beverage for children with kidney failure, since they can’t get rid of aluminum as efficiently. For most people, though, tea shouldn’t be a problem.
On a special note, if you drink tea out of a can, buy undented cans. The aluminum in dented cans can leach into the liquid, boosting aluminum levels by a factor of eight while sitting on store shelves for a year
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![[Image: color_coated_aluminium_coil_4.jpg]](http://www.coil-aluminum.com/images/color_coated_aluminium_coil_4.jpg)
![[Image: aluminiumfoilstrip-300x300.jpg]](http://www.aluminiumstrip-hm.com/wp-content/uploads/2018/02/aluminiumfoilstrip-300x300.jpg)
[img=300x0]http://www.aluminiumstrip-hm.com/wp-content/uploads/2018/02/aluminiumfoilstrip-300x300.jpg[/img]