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| Why does your BGA always fail to be assembled? |
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Posted by: toyota1515 - 06-30-2022, 07:36 AM - Forum: aluminium faq
- Replies (2)
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Here is a possible reason - dimple value:
In manufacturing,
blind vias between L1 and L2
are filled with resin during laminate.
If it's a blind via between L1 and L3,
it's difficult to fill with resin.
Manufacturers would plate and fill it fully with copper.
During production,
due to its aspect ratio,
as well as chemical properties during plating
the surface is always depressed
Its depth is called the dimple value.
This value should be less than 15 um.
Otherwise,
there would be hollows or bubbles,
after the BGA is assembled.
PCBA factories can print a thicker solder paste,
adjust the reflow profile, and extend the heating time,
to drive the bubble out.
While, it's easy to result in other quality issues.
What PCB designers can do:
1. When designing a PCB, ask your manufacturer for a laminated structure;
2. The smaller the aspect ratio, the better. Commonly 1:1 or 0.8:1 (laser drilling),
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| what is Aluminum micro channel |
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Posted by: SpbPTSml - 06-30-2022, 07:28 AM - Forum: aluminium faq
- No Replies
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Aluminum micro channel is a kind of aluminum conductor plate with micro holes in one side, which with the backplane form a micro channel with high density humidity absorption from air. This is an ideal material for constant temperate ventilation system in area where human needs low CO2 environment. It also can be used as a heat dissipation material for CPU and other electronic products.
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| Can you recycle aluminum foil for money? |
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Posted by: SpbPTSml - 06-30-2022, 06:55 AM - Forum: aluminium faq
- No Replies
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Aluminum foil is one of common materials in our life, and it has great value of recyclable. So if you ask me can you recycle aluminum foil for money? I can answer you that: of course, I can.
First of all, aluminum foil can be collected easily. When talking about the aluminum foil, it usually refers to the aluminum plastic films. These materials are very easy to collect in the local recycling center, so about raw materials collecting, you don't need worry about that at all. Besides, the price of these raw materials is pretty cheap.
Secondly, aluminum, as a precious metals, has great demand around the world. The Aluminum Association released preliminary estimates as part of its monthly Aluminum Situation report showing an estimated 7.7% demand growth for the aluminum industry in North America (U.S. and Canada) in 2021. This outpaced estimated 5.7% Gross Domestic Product (GDP) growth in the United States in 2021. And the price of aluminum can even reach to $3670, according to the tradingeconomics.com.
The profit of aluminum foil recycling business is mainly influenced by the aluminum price, due to the price of raw materials is transparent in the market. So as long as you can get high purity and good quality aluminum, you can get high profit. About recycling aluminum, there are many ways, like fire burning, chemical dissolution, mechanical crushing and separating, etc. But if you want to get high purity and good quality of aluminum, the mechanical crushing and separating will be the best way.
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| How to separate aluminum from plastic? |
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Posted by: toyota1515 - 06-30-2022, 06:54 AM - Forum: aluminium faq
- No Replies
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There are a lot of waste aluminum-plastic composite materials in the market, but the suitable way to separate aluminum from plastic is few. The traditional separation method of chemical method has been eliminated due to its high cost, cumbersome process, pollution to the environment and harm to human beings, and now it mainly uses the method of physical separation, like using aluminum plastic separation recycling machine.
aluminum plastic separation recycling machineThe separated aluminum and plastic
The aluminum plastic separation recycling machine has a lot of advantages, like low cost, high separating rate and high working efficiency. And it is very easy to operate, just needs 4 steps, aluminum will separate from plastic quickly.
The process of separating aluminum from plastics by the aluminum plastic separation recycling machine is as follows:
1. Crushing
put the aluminum and plastic products into a crusher to break them into smaller particles.
2. Grinding
broken aluminum particles for grinding, are processed into powder.
aluminum plastic separation recycling machineProcess of aluminum plastic separation recycling machine
3. Spin vibration sieve
The powder mixture of aluminum and plastic was put into the spin vibration sieve for screening, and the larger particles were screened out for grinding again;
4. Electrostatic separation
the small particles after the treatment of rotary sieve for electrostatic separation, so as to separate aluminum and plastic powder.
aluminum plastic separation recycling machineAluminum plastic separation recycling machine
Aluminum plastic separation recycling machine equipped with dust removal device, will not cause secondary environmental pollution, and low cost, simple operation. It is the best choice to use the separation equipment to separate the aluminum from the plastic.
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| How do you recycle Aluminium sheets? |
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Posted by: SpbPTSml - 06-30-2022, 06:52 AM - Forum: aluminium faq
- No Replies
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How do you recycle Aluminium sheets?
Step-by-Step Process of Aluminum Recycling
Collection of Aluminum Scrap. Like in every recycling activity, the first stage of aluminum recycling is the collection. ...
Step 2: Sorting. ...
Step 3: Shredding. ...
Sorted Through a Magnet. ...
De-coating. ...
Step 6: Melting. ...
Step 7: Transfer to the Holding Furnace. ...
Step 8: Ingot Transportation.
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| How does aluminum recycling plant works? |
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Posted by: toyota1515 - 06-30-2022, 06:51 AM - Forum: aluminium faq
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Aluminium recycling plant mainly used to crushing and separating various types of Mixed aluminum-plastic & flexible packaging materials, to achieve fully separate the aluminum and plastic powder, completely dry physical separation technology, no pollution, with best social and economic benefits, also provides aluminium recycling plant cost budget and project report assist you building aluminium recycling plant.
aluminum plastic recycling plant
Aluminum recycling plant working process
When the waste aluminum foil, waste aluminum foil plastic was sent into the plant, they will use the aluminum separator to directly produce, aluminum foil and plastic can be completely separated. The recovery aluminum can be used to smelting the aluminum ingots and also are the upper materials.For the silver factory, fireworks factory, aluminum factory (to smelt the ingots). PVC plastic can be pressed,used to make the packaging and water pipes.
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| Why recycling aluminum composite is necessary? |
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Posted by: toyota1515 - 06-30-2022, 06:48 AM - Forum: aluminium faq
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Combustible ACM has been used in many buildings which has proved to be very dangerous. There have been some bad events in history. Using incorrect aluminum composite on high-rise buildings poses a fire risk. On June 14, 2017, a deadly fire broke out in Grenfell Tower block of flats in West London. It caused 70 injuries and 72 deaths. The fire spread due to the external insulation and buildings cladding.
To prevent this kind of tragic event the elimination of combustible aluminum composite is necessary. Different authorities are taking strict actions to remove the ACM. Many firms are using the recycling processes to contribute to the protection of the environment.
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| HOW TO SEPARATE AND RECYCLE SCRAP ALUMINUM COMPOSITE PANELS? |
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Posted by: toyota1515 - 06-30-2022, 06:47 AM - Forum: aluminium faq
- Replies (1)
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It is hard to separate aluminum and plastic because of the good adhesion between aluminum and plastic. So how to separate aluminum plastic composite panel has became a hard problem. Henan Doing Environmental Protection Technology Co., Ltd designed an aluminum plastic separation recycling machine in order to solve this problem.
![[Image: 2-210H9160140437.jpg]](https://www.copperwirerecyclingmachinery.com/uploads/userup/210729/2-210H9160140437.jpg) Aluminum plastic separation recycling machine
The process of separating aluminum composite panel is in the following:
I. Crushing - Using a crusher to crush the aluminum composite panel into small pieces with the size of about 1cm.
II. Grinding - Using a grinding mill with turbine to grind these small pieces into powder about 16-20 mesh.
III. Sieving - Using an eddy-vibrating screen to control size of powder. Those powder, whose size is under 20 mesh, can through the screen of eddy-vibrating screen. And those bigger powder cannot through the screen. So the eddy-vibrating screen will sent them back to the grinding mill to get further grinding until grinding completely.
![[Image: 2-210H9154039608.JPG]](https://www.copperwirerecyclingmachinery.com/uploads/userup/210729/2-210H9154039608.JPG) Process of aluminum plastic separation recycling machine
During the process, pulse dust removal system has been working, in order to collect the dust generated by the machine. But it will not discharge into the air. And it adopts dry type separation methods, which will not produce waste water, or toxic chemicals, it is a totally environmental friendly machine.
![[Image: 2-210H9161ZL43.jpg]](https://www.copperwirerecyclingmachinery.com/uploads/userup/210729/2-210H9161ZL43.jpg) Aluminum plastic separation recycling machine |
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| Why You Should Never Bake Cookies on an Aluminum Foil-Lined Baking Sheet |
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Posted by: toyota1515 - 06-30-2022, 02:43 AM - Forum: aluminium faq
- No Replies
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There are dozens of fantastic ways to use aluminum foil in your kitchen — from covering your leftover lasagna before re-heating it in the oven to lining your grill to make roasting veggies easier and less messy. These are just a few of the myriad reasons foil has rightly earned its place as an essential kitchen staple you should always have on hand.
But if you've been reaching for the aluminum foil to line your baking sheets before making cookies or other sweet, doughy treats, you might be surprised to learn you've been committing a major baking faux pas.
Cookies on Aluminum Foil
The reason you should never bake cookies on an aluminum foil-lined baking sheet all boils down to science.
As you probably already know, foil used for cooking is made almost exclusively from the metal aluminum, which is a great conductor of heat and useful in many cooking techniques. Just to give you a point of reference, Reynolds Wrap Aluminum Foil is made of 98.5 percent aluminum. (Another thing to note: Cooking foil doesn't actually contain any tin these days, despite what the common misnomer "tin foil" would suggest. It's a nod to earlier times when tin was actually used in the product.)
And while these conductive properties are what make aluminum foil heat-safe and well-suited for use in the oven and other cooking applications, what you may not have realized is that this signature characteristic has some serious downsides when it comes to baking, whether you're making chocolate chip cookies, holiday gingersnaps, or any other delightfully doughy treat.
Ultimately, the scientific reason you should never bake cookies on a foil-lined baking sheet is simple: The parts of your cookie dough that come in direct contact with the foil are exposed to more concentrated heat than the rest of your cookies, thanks to aluminum's natural conductor properties.
The end result? Your batch of cookies ends up baking unevenly, with the bottoms of your cookies (which are in direct contact with the aluminum foil) baking faster than the tops (which are only exposed to the evenly distributed hot air in your oven). That's why cookies baked on foil-lined sheets have browner, crispier bottoms (that, yes, are sometimes burned) than those baked on parchment paper, the scientifically smarter choice for the perfect batch of cookies.
Cookies on Parchment Paper
Indeed, parchment paper is the clear winner for all of your baking needs because, unlike foil, it distributes your oven's heat more evenly and keeps the highly-concentrated heat of your metal baking pan (or foil lining) from scorching the bottoms of your cookies. It also has a natural non-stick coating, meaning it won't stick to your baked goods like foil sometimes can. You won't have to grease it first, either. Your cookies will slide right off the parchment paper and onto your cooling rack without an ounce of effort.
So if you love crispy, brown-bottomed cookies, by all means, keep reaching for the aluminum foil. But if you're on a quest to bake the perfect batch of chocolate chip cookies (or any other cookie variety you like), it's time you listened to science: Ditch the aluminum foil, and instead make parchment paper your new cookie baking secret weapon.
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| 5 Clever Ways to Use Aluminum Foil to Clean Your Kitchen |
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Posted by: toyota1515 - 06-30-2022, 02:40 AM - Forum: Knowledge & Technique
- No Replies
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Getting in the kitchen and whipping up tasty eats for your friends and family is the fun part, but having to clean up the resulting mess afterward can be such a buzzkill. From scrubbing baked-on gunk off your pots and pans to keeping your stovetop looking pristine...If only you could snap your fingers and have all traces of your latest recipe disappear in a poof!
While we haven't figured out the secret to a 1-second clean-up just yet, it's easy to keep your kitchen looking cleaner with minimal amounts of effort thanks to a little help from your new secret weapon: aluminum foil.
Beyond using it for food storage, this kitchen staple can help you keep your kitchen clean in a multitude of unexpected ways. These clever kitchen cleaning tips and hacks using foil will make maintaining your kitchen a breeze.
![[Image: aluminum_foil_13.jpg]](http://www.aluminium-sheet.com/images/portfolio/aluminum_foil_13.jpg)
1. Keep the bottom of your oven clean.
Cleaning out your oven can be such a chore. So to avoid having to do it but once a year during your deep-clean, line the lower rack of your oven with a layer of aluminum foil to catch any drips and spills that can occur when cooking — and switch it out for a new sheet, as needed. Just be sure to never place the foil directly on the floor of your oven where the heating element is because doing so is a fire hazard.
2. Scrub tough, cooked-on messes off of grill grates, pots, and pans.
Arie Hazan, founder and head chef of Arie's Catering in Columbus, OH, says, "Aluminum foil is great at scrubbing food build-up off of your grill grates safely," since traditional grill brushes tend to shed bristles that could end up in someone's food the next time you cook out.
To clean your grill with foil, "Wad up a ball of aluminum foil, lightly douse your grill grates with water and start scrubbing," Hazan says. "We cater grilled dinners for 100 guests or more at a time, and this cleaning hack helps cut our post-grilling clean-up time down drastically."
You can also modify this cleaning tip to work on pots and pans (as long as they're not non-stick) by sprinkling a layer of salt or baking soda onto your grimy surface and using a damp ball of foil, rather than a sponge, for extra scrubbing power.
3. Remove rust and stains from your chrome faucet and other chrome appliances.
Thanks to a cool chemical reaction between aluminum foil, water, and chrome, you can use a strip of foil to keep your chrome kitchen sink faucet as shiny as new. First, clean the rusted area with soap and water. Then, fold a piece of foil into a small square with about 3 to 4 layers to prevent rips.
Next, dip your foil square in plain water (no soap!) and scrub the area gently to avoid potentially scratching the finish. You'll see little bits of rust start to flake off with just minimal amounts of elbow grease. Re-dip your foil in water and repeat until your chrome faucet — or other chrome kitchen appliance — is sparkling!
Keep Reading: 5 Things You Didn't Know About Aluminum Foil
4. Make stovetop cleaning easier.
If it's obvious which burner on your stovetop is your favorite, then this kitchen cleaning tip is for you. As long as you don't have a flat-top stove, you can line the burners with aluminum foil to keep drips from becoming hardened and caked onto the base of your burners themselves, an area that can feel impossible to clean once a mess does occur. Just be sure to switch out your foil liners regularly and keep a close eye on them while cooking to avoid any potential fire hazards.
5. Clean tarnished silverware quickly.
Say goodbye to traditional silver polishing. This DIY ionizing cleaning method using aluminum foil works to clean tarnished real silver flatware in just minutes!
To try this time-saving cleaning hack at home, start by completely lining a heat-safe container with aluminum foil and filling it just a couple of inches with hot water, or enough to submerge a piece of silverware completely. Next, stir in two tablespoons of salt and two tablespoons of baking soda until dissolved. Then, add a few pieces of silverware, making sure that each piece is in direct contact with the foil.
In a few minutes, the ion exchange chemical reaction should take place and your silver will be instantly clean. Repeat as needed, or increase the size of your container and double the amounts of baking soda and salt to do a bigger batch at once
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