BLOG-6 REACTION WITH WEATHER
REACTION OF STEEL WITH WEATHER CONDITIONS.
RUSTING OF STEEL = REACTION
WITH OXYGEN +WATER
Any item that has any type of iron mixed in it will be able to
oxidize and rust at a
certain level. As soon as steel is exposed to
air and moisture it will begin to rust
and the lifespan will begin to
decrease at that time
Despite being one of the most common and useful
materials manufactured in the world.
Steel has always had one major flaw. It RUSTS. We often
see the dark brown or red color
And flaky material on old bridges, old buildings, and
on steel that has just been left out in
the open for too long.
ZINC, NICKEL ,COPPER AND ALUMINIUM etc all RUST.
HUMIDITY: Since moisture in the air is
one of the most
common causes of rust,decreasing
the humidity around your
tools can reduce the likelihood
of rust forming.
TEMPERATURE:
A
higher temperature increases the electrical resistance of
a steel,
and a lower temperature reduces it.
Heated steel undergoes thermal expansion and
increases in
Volume.
Cold weather temperatures can negatively affect the
safe working
capacity of cranes
and heavy-lifting equipment. The steel in these
pieces of
equipment can experience a shift from ductile to brittle if
the temperature drops
below a certain point.
WHAT CAN BE DONE ?
STRUCTURAL
STEEL DESIGN:
The way your steel beams, plates and other
steel structures are designed and used affect the formation of rust. Too many
gaps in the design can allow the moisture to enter the beams and plates used in
the construction.
Use of
welding instead of bolts can prevent gaps in your structures.
GALVANIZING
Applying a coat of zinc to steel protects
rusting.
CHROMIUM
COATING
Coating
steel with a thin layer of chromium oxide is more commonly known as
Stainless steel.
ALUMINIUM
STEEL
Steel that is coated with aluminium-silicon
alloy has more resistance to corrosion than steel, and also keeps its
properties at extremely high temperatures.
ORGANIC COATING
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