Applications of Foam Aluminum Profile (1)

A. Needs in the national security

1. Needs in submarine silencing and missile destroyer noise reduction

Sound-absorbing box composed of sound absorption board made of foam aluminum profile and the back cavity installed in the submarine engine room can reduce noise more than 20 decibels, which is conducive to manufacture the silent submarines.

Missile destroyers and other ships also need to use foam aluminum sound absorption board on the engine room for noise reduction and make partition walls.

2. Needs in the production of composite armor

The new composite armor consists of ceramic pieces, foam aluminum profile and aramid fiberboard. 20mm thick aluminum foam material is set in the middle or inner layer, because of the foam aluminum profile’s energy absorption, so as to disperse the effect of armor-piercing and armor bombs to prevent entering inside further.

3. Needs in the production of vehicles’ anti-mine floor

Tanks, armored vehicles, heavy trucks and others with V-type bottom, has the armor plate in the external, the foam aluminum board in the middle, and aramid fiberboard or steel in the inner for anti-landmines.

4. Needs in military command vehicles and command post

With function of shielding electromagnetic wave, foam aluminum profile is able to shield more than 90 decibels which is used in the production of lining in military command vehicles and the command for confidential information.

5. Needs in the anti-riot vehicles

Produced with foam aluminum profile in composite armor, anti-riot vehicle’s weight can be reduced by more than one-third.

6. Needs in military air dropped box

At present, China's military air drop box is made by the United States Harding technology and the internal energy absorption damping material is the high-density plastic foam. The foam aluminum profiles as the internal energy absorption damping materials increase by more than 10 times energy absorption capacity. That is, the safety of ammunition has increased by more than 10 times.

7. Needs in ship explosion-proof deck

Ship deck with armor plate, foam aluminum and steel composite structure has increased more than 2 times strength deck, the same as the anti-blast and bullet-proof capacity.

B. Needs in the rail transport

1. Needs in sound absorption lining of subway station

the top and side wall of produce subway station using sound-absorbing panels made of the perforated foam aluminum has 10mm thickness and the 20mm-thick cavity behind. Even in the wet environment around subway station, it still maintains a good noise reduction effect that is doubled the effect or other noise-absorbing material.

2. Needs in the noise screen in high-speed railway

The sound barrier in high-speed railway made of perforated foam aluminum profile in the inside can isolate sound to achieve efficient noise reduction effect. If foam aluminum profile is wet after the rain, the noise reduction function does not reduce. And it also has the function of energy absorption and shock vibration, and after the train goes through the vibration, the rivets will not loose containing long-term security.

3. Needs in the ordinary train floor

Ordinary train foam-aluminum floor is made of the 1mm aluminum plate, 15 - 20mm foam aluminum and 1mm aluminum sandwich panels. The foam aluminum’s density is about 0.5g / cm³ with excellent function of sound insulation and vibration reduction; no combustion and good fire-resistance performance; 20Mpa or more bending-resistant strength; 30 years or more service life; light weight about 1/2 of the weight of the wooden board.

4. Needs in the high-speed train floor

The foam aluminum floor can reduce more than 20 decibel noise, reduce vibration by an order of magnitude, and has fire resistance, corrosion resistance, about 20Mpa bending strength, no collapse, service life up to 30 years. 

5. Needs in the train door sandwich

The foam aluminum profile used as the door sandwich material has excellent functions of sound insulation, vibrate isolation, heat insulation.

6. Needs in compartment lining

The subway compartments made of 20mm thick foam aluminum profile, which can reduce noise by more than 20 decibels. The compartment liner of long-line train, high-speed train, subway train with 20mm foam aluminum, 20mm polyurethane foam composite board, has excellent dual capacity noise and heat insulation.

7. Needs in partition wall in passenger compartment

The passenger compartment made of foam aluminum profile with good sound insulation function spread the same intensity to every direction not to produce birds sound.

8. Needs in the electrical cabinet

Generators, motors, inverters, central air conditioning and other noise and electromagnetic equipment, electrical appliances made of foam aluminum profile can reduce more than 20 decibel noise, and the electromagnetic waves Shield more than 90 decibel.

9. Needs in the subway tunnel ventilation muffler

The suction grille made of the foam aluminum can effectively reduce the tunnel ventilation noise.

Purchase Misunderstanding of Aluminum Profile

Aluminum profile is made of the aluminum stick that forms different shapes of aluminum materials through different degrees of hot melt, extrusion. Aluminum profiles are widely used, usually in construction, home improvement, industry, etc. So, how much aluminum profile is? Do not worry. As below, I will introduce you aluminum prices and some knowledge about aluminum.

Characteristics of aluminum profile

1. Corrosion resistance

Aluminum density is only 2.7g/cm3, which is 1/3 of the density of steel, copper or brass (7.83g/cm3, 8.93g/cm3). Aluminum can show excellent corrosion resistance in most environmental conditions, including in air, water (or brine), petro chemistry and many other chemical systems.

2. Electrical conductivity

Aluminum profiles are often used because of their excellent electrical conductivity. On the basis of equal weight, the conductivity of aluminum is nearly two times of that of copper.

3. Thermal conductivity

The thermal conductivity of Aluminum Alloy is about 50-60% of copper, which is favorable to the manufacture of heat exchanger, evaporator, heating appliances, cooking utensils, and the cylinder head and radiator of car.

4. Non-ferromagnetism

Aluminum is non-ferromagnetic, which is a significant feature for the electrical and electronic industries. Aluminum profiles are not self-inflammable, which is important for applications involving handling or exposure to flammable and explosive materials.

5. Machinable property

Machinable property of aluminum profiles is excellent. Machinable property change considerably in various wrought aluminum alloys and cast aluminum alloys, as well as in the various conditions after the output of these alloys, , which requires special machine tools or technology.

6. Formability

The allowable deformation is dominated by specific tensile strength, yield strength, ductility and the corresponding work hardening rate.

7. Recycling

Aluminum has high level of recovery. In addition, the characteristics of recycled aluminum are hardly different from primary aluminum.

Specification about Aluminum profile

Specifications about Aluminum alloy doors and windows profile are: 35-series, 38-series of, 40-series, 60-series, 70-serie, etc. The so-called 35, 38...... , refers to width of the aluminum alloy profile main frame is 35 mm, 38 mm....... Balcony closure usually uses 70-series or 90-series, and if less than 70, the strength is hard to guarantee.

Aluminum prices

Aluminum production process mainly three processes including casting, extrusion and coloring (coloring mainly includes: oxidation, electrophoresis coating, fluorine carbon coating, wood grain transfer etc.) the color in general are silver white, black, bronze, gold, etc. Aluminum prices are different from one to another. Generally speaking, they are mainly affected by some main factors, such as types, use, brands. Generally, Aluminum prices are tens of thousands, and the price range is 14000 - 50000 Yuan per ton.

Note: this price is for reference only! Because different regions, of course, prices will vary. For more information about the price, please be subject to the local dealer!

Six Major Considerations for the Purchasing of Aluminum Windows and Doors

1^st, attention to a careful study of windows and doors sealing performance

According to the experts in the selection of aluminum doors warn owners pay particular attention to its sealing performance when choosing aluminum doors with mosaic glass, especially for hollow glass design of aluminum windows and doors products. Because if the door and window sealing is not good, it will lead to aluminum doors and windows hollow layer filth, seriously affecting the appearance. General aluminum windows and doors brand products use high-quality sealing tape, which will be receive all-round sealing treatment by advanced hot-pressing sealing technology. It  not only can effectively prevent the dust and water, but also improve the sound insulation.

2^nd, aluminum windows and doors components

In addition, the component of aluminum door and window should be strong enough. Also, high-quality aluminum door and window components are required to use corrosion-resistant filling material to keep the connection airtight and waterproof.

3^rd, aluminum windows and doors signs

Normally formal or production license of aluminum windows and doors manufacturers will mark the product logo in its obvious parts, marked information includes: manufacturer or trademark, product name, product type or mark, manufacture date or number. The packing box should have obvious words and signs like "moisture", "handle with care" and "upward" etc.

4^th, aluminum windows and doors prices

In general, high-quality aluminum doors and windows is equivalent to high production costs, which price is lower than the poor aluminum doors and windows by 30%. In order to reduce costs, some manufacturers choose cut corners, like producing shoddy, which add the risk of products. We need to keep this in mind and choose standard products. Pay more attention to this information, so you can not be misled.

5^th, aluminum windows and doors processing quality

High-quality aluminum windows and doors are finely processed, exquisitely welded, especially the smooth in some of the stitching. The poor quality aluminum windows and doors, blindly select series and specifications and  processed shoddy. The door frames and other locations can not be spliced ​​flat, and sometimes even a larger gap appears. When purchasing, consumers should pay special attention checking welding defects, such as open welding, leakage welding and so on.

6^th, aluminum windows and doors profiles

There should no depression or bulging in the surface of aluminum windows and doors profiles. The  wall thickness of main profile need to be thicker than 1.4mm.The same aluminum windows and doors profiles color should be consistent. If there exists color difference, it is not appropriate to buy. Avoid opening the surface of the bubble (white spots) and ash (black spots), and cracks, burrs, from the skin and other obvious defects in the profile. Oxide film thickness should reach 10 microns. Scratch the surface to see whether the surface of the oxide film can be wiped when purchasing.

A View Of Non Ferrous Metals Index Aluminium Extrusion Price Trend

  

The non-ferrous metals industry’s monthly prosperity index report was released in Octorber,2016, which was made up by the China nonferrous metals industry association, China academy of economic trends of the Economic Daily and China economic monitoring center of the National Bureau of statistics. The report showed that the prosperity index of non-ferrous metals industry was 27.6. Compared with last month, it increased by 2.2, rising to the upper edge of a “rather cold” area. The growth has expanded month by month since the third quarter, and the whole industry presents a positive trend.

At the same time, the ex-factory price has risen firstly since 2012. Because of this, the total profit of non-ferrous metals industry increase dramatically, and the profit rate gets a great improvement compared to the same period of last year. Meanwhile, there is a remarkable achievement in terms of scientific and technological innovation, transformation and upgrading and the green development. However, in addition to the influence of the rebound in price, sales status has not been improved obviously; the weakness in demand and the pressure of excess capacity are still high.

The overall recovery of the industry

In October, 2016, China Economy non-ferrous metals industry prosperity index increases 2.2 to 27.6 compared with last month, and the leading synthetic index is 82.5, rising by 1.9 compared with last month. “Since this year, both the leading synthetic index and the prosperity index are growing up, especially the prosperity index has soared in “cold area” and the industry presents a positive trend. “ The vice secretary-general of China non-ferrous industry Wang Huajun analyses it. And he estimates that the non-ferrous metals industry will show a stable recovery tendency in a short term.

According to the global economic environment, the global economy will remain a moderate growth in the fourth quarter in 2016; American economy has developed rapidly; European economy maintains the slow growth. Although it is still in the weak range in general, the recovery of emerging economies tends to pick up. In terms of domestic economy, the national economy runs smoothly, which is better than expectation. Commodity prices continue to rise and the supply and demand of the domestic market present positive changes. Moreover, RMB devaluation becomes the impetus for the export growth of the non-ferrous metals industry and also stimulates the export activities. The non-ferrous metals' allied industries recover distinctly and the supply-demand relationship improved significantly. ( A Chinese aluminum profiles supplier, Linkedalu Metal Group Co.Ltd translated)