Copper and Its Alloys Presentation
Copper and Its Alloys Presentation
Copper and Its Alloys Presentation
ITS ALLOY
GROUP MEMBERS
INTRODUCTION OF COPPER
PROPERTIES & APPLICATIONS OF COPPER
EXTRACTION OF COPPER
COPPER ALLOY
CLASSIFICATION OF COPPER ALLOYS
PROPERTIES &APPLICATION OF COPPER ALLOYS
APPLICATIONS OF COPPER IN AEROSPACE
LIMITATION OF COPPER IN AVIATION
CONCLUSION
BY
INTRODUCTION EPHRAIM Turatsinze
Copper and its many alloys have played an important role in many
civilizations, Here, the graph shows the role that copper has played
throughout human civilization for thousands of years.
Because of being malleability and
ductility, copper is ideal for making wire.
It is corroded by salt water but is not
affected by fresh water. The ultimate
tensile strength of copper varies greatly
In aircraft, copper is used primarily in
the electrical system for bus bars,
bonding, and as lockwire.
Beryllium copper is one of the most successful
of all the copper base alloys. It is a recently
developed alloy that containing about 97 percent
copper, 2 percent beryllium.
The resistance of beryllium copper to fatigue and
wear makes it suitable for diaphragms, precision
bearings and bushings, ball cages, and spring
washers.
There are other copper alloys that are used to make parts of aircraft
such as
Bronzes are copper alloys containing tin. The true bronzes have up to 25
percent tin, but those with less
than 11 percent are most useful, especially for such items as tube fittings
in aircraft.
Red brass, sometimes termed bronze because of its tin content, is used
in fuel and oil line fittings.
Brass metal composed of 60 percent copper and 40 percent zinc. Its
strength can be increased by heat treatment. As cast, this metal has an
ultimate tensile strength , and it can be elongated18 percent. It is used in
making bolts and nuts.
BY
PRODUCTION OF COPPER
JOSEPH Byagatonda
MINING
The copper ore has to be dug from the ground.
The ore contains some copper mineral and lot of waste rock.
EXTRACTION OF COPPER
The method used to extract copper from its ores depends on the nature
of the ore.Sulphide ores such as chalcopyrite are converted to copper by
a different method from silicate, carbonate or sulphate ores.
ELECTROLYTIC REFINING
The purification uses an electrolyte of copper(II) sulphate solution,
impure copper anodes, and strips of high purity copper for the cathodes.
After
refining, the copper cathodes are melted and cast into ingots,
cakes, billets, or rods depending on the final application
BENDING
Manufacturing process that produces a v-shape, u-shape, or
channel shape along a straight axis in ductile materials, most
commonly sheet metal.
PROPERTIES OF COPPER BY
AND ITS APPLICATIONS GILBERT Rukundo
Copper was important to early humans and continues to be
a material of choice for variety of domestic, industrial, and
high-technology to day. Some properties are;
Good electrical
tough
conductor
Non magnetic
Good thermal conductor
Attractive color
Corrosion resistant
Easy to alloy
Antibacterial
Recyclable
Easily joined
catalytic
Ductile
Copper is an excellent electrical conductor. Most of its
uses based on this property or the fact that it is also a good
thermal conductor.
Corrosion resistant
Copper is low in reactivity series. This means that doesnt
tend to corrode. Again, this is important for its use for
electrical cables, and radiators.
Ductile
Copper is a ductile metal. This means that it can easily be
shaped into pipes, sheets and drawn into wires.
Tough
Copper and copper alloys are tough. this means that they
were suited to being used to main rotor hub for small
helicopters and landing gears.
Non magnetic
Copper is non magnetic and non sparking. Because of this,
it is used in special tools and military applications.
Alloys easily
Copper can be combined with other metals to make alloys.
The most well known are brass and bronze.
APPLICATION OF COPPER
Al ,It is light weight makes possible long spans, and its relatively large
diameter for a given conductivity reduces the discharge of electricity from
the wire when it has a high potential.
The discharge is greater when smaller diameter wire is used than when
larger diameter wire is used.
Some bus bars are made of aluminum which has a greater radiating surface
than Cu for the same conductance.