Maybe you have seen Isostatic Graphite or Artificial Graphite. You think both of
them are unique and incredible. Then let us know more about graphite.
As some of us know, graphite is with its special
nature. Isostatic Graphite is really a great
instance. In other words, graphite has special structure as a result it has its
special function.
Firstly,graphite is with higher temperature
resistance. Generally speaking, graphite‘s melting point can be up to 3
thousand, nine hundred degrees. Simultaneously, its boiling point can be up to
four thousand, two hundred and twenty five degrees. Even the ultra high
temperature arc ignition, weight reduction of graphite is still extremely
little. What‘s much more, its coefficient of thermal expansion can also be very
little. In contrast, the graphite strength increases with the increasing
temperature. By the way, when the temperature of graphite is two thousand, the
graphite intensity can be doubled.
Secondly, graphite is with the feature of
conductivity. To be particular, graphite is with one hundred times greater
conductivity than that of common nonmetal ore. As a matter of reality, it‘s
thermal conductivity may be more than that of steel, iron, lead and other metal
materials. But around the other hand, its thermal conductivity decreases with
the improve of temperature. Even in high temperature, graphite may be as
insulator. Graphite can conduct electricity simply because each carbon atom in
graphite types 3 covalent bonds with other carbon atoms. What‘s much more,
every carbon atom nonetheless retains one free electrons to charge.
Thirdly, grahite is with great lubrication. To be
specific, its lubrication overall performance depends upon the size of graphite
flake. In other words, the larger the flake or Graphite Block is, the smaller sized
the friction coefficient will probably be, and the better the lubrication
overall performance will be.
Fourthly, graphite is with good chemical
stability. Graphite has great chemical stability at room temperature.
Consequently, it's with acid, alkali and corrosion resistance to organic
solvents.
Now, let us discuss one application of graphite.
Graphite may be used as put on resistant
lubricating material. Generally speaking, graphite, within the mechanical
industry, is frequently utilized as lubricant. As all of us know, the
lubricating oil can not be used in the condition of high speed, higher
temperature and high stress. But in contrast, graphite‘s wear-resistant
material can be utilized within the temperature of two hundred to two thousand
degrees and with out lubricating oil.
As for a lot of devices that transport the
corrosive medium, Graphite Heater is widely used
for creating piston cup, sealing ring and bearings. That is because once they
run, there's no have to add lubricant.
没有评论:
发表评论