Its conductivity is about two thirds of CAT6 Cable manufacturers, but because of its density is
only one-third of the copper, so that compared with copper lines, in the same
quality and length, the conductivity of aluminum is about twice of the copper,
and the price is lower. So most of the outdoor high-voltage lines are made of
cast aluminum, saved a large number of cost, ease the tension of copper.
The thermal
conductivity of aluminum is three times larger than iron. In industry, aluminum
is commonly used to manufacture various heat exchangers, cooling materials. Many
kinds of cookware are made of aluminum. Compared with the iron, it is not easy
to corrosion, extend the service life. Aluminum powder has a silvery sheen, often
mixed used with other substances to be coatings, brushing the surface of the
iron products to protect iron products from corrosion, and have beauty effect.
Since aluminum burning in oxygen will give out a dazzling white light and emit
a lot of heat, so it is often used to make some explosive mixtures, such as
ammonium aluminum explosives.
In the
metallurgical industry, thermite is often used to melt refractory metals. Such
as aluminum powder mixed with iron oxide powder will react violently,
transports used it to weld rails. Aluminum is often used as a deoxidizer in
steel industry; smooth aluminum plate has good light reflecting properties, can
be manufacturing high quality mirrors, condenser bowls. Aluminum also has a
good acoustic performance, according to this characteristic, some of the radio
room, modern large building ceilings also use aluminum. Pure aluminum was
relatively soft, in 1906, German adding a small amount of magnesium, copper in
aluminum, prepared tough aluminum alloy. In the later decades of the
development process, people according to different needs, developed a lot of
aluminum alloys, plays a very important role in many areas.
Metal powder supplier found that some metals add a
small amount of aluminum can be greatly improved its performance. Such as Green
Copper (contains 4% to 15% of aluminum), this kind of alloy has high strength
corrosion resistance, the hardness is closed to low carbon steel, and has a
metallic luster which is difficult to be dimmed, commonly used in jewelery and
construction industries; manufacturing machinery parts and tools; for pickling
equipment and other equipments which are contacted with sulfuric acid,
hydrochloric acid and hydrofluoric acid; manufacturing welding brush and handle
folder; heavy gear and worm, metal forming mold, tool guide, the tool which
would not occur sparking, non-magnetic chain, pressure vessel, heat exchanger,
compressor blades, ship propellers and anchors, etc. Adding magnesium in
aluminum can be obtained aluminum-magnesium alloy, its hardness is much larger
than pure magnesium and aluminum, and retains the characteristics of light
weight, commonly used in the manufacture of the aircraft fuselage, rocket body;
manufacture doors and windows, beautify the home environment as well as manufacturing
vessels.
Aluminizing,
to make the surface of the ordinary carbon steel or cast iron formed a heat
resisting aluminum oxide film to protect the inside iron, is one of the
chemical treatment methods in steel. Aluminum is a very important metal, aluminum
plate alloy is adding various alloying elements in the aluminum processing (the
main alloying elements are copper, silicon, magnesium, zinc, manganese, the secondary
alloy elements are nickel, iron, titanium, chromium, lithium, etc.), to improve
the mechanical properties and chemical indicators of aluminum. Aluminum plate
alloy has some special properties which are pure aluminum do not have, widely
used in special circumstances, such as ships, refrigerators, mold, aerospace
equipment, and so on.
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