Corrosion and scaling in automobile
cooling systems is primarily by chemical reaction of oxidizing agents in the
coolant on the metal components. The type and nature of materials present at
heat exchanging surfaces, the temperature of the system, pH and type of
corrosive elements present in the coolant determine the type of inhibitor
package needed.
Conventional water based coolants constantly need
additives in the form of mineral inhibitors such as phosphates, nitrites and
borates for poplar heat exchange surface metals like aluminium, copper etc
along with other parts made from cast iron & mild steel. Absence of
suitable inhibitors can cause corrosion, metal cavitation, scaling and cause
leaks by destruction on rubber gaskets and head caps. Liquid coolant additives serve ideally
as easy to use blends that can be directly mixed with coolant water for easy
and quick anticorrosive action on coils, coolant pump and radiator fins.
Corrosion inhibitors are generally
blends of chemicals added to the coolant water to reduce material loss and
system damage due to oxidation. The prerequisite is a passivation agent to coat
the metal surfaces preventing further corrosion followed by neutralization of
oxidizing ions in the coolant thus reducing cavitation. Best corrosion
inhibitors need to be fast acting and thermally stable so as to operate at high
temperatures and high coolant flow rate. Nitrite, Borate, Silicate and
Polyacrylate formulations seem to be the most popular as corrosion and rust
inhibitors. This is due to the fact that they are able to remove most oxidizing
agents in common coolants while passivating metal surfaces for a long lasting
corrosion control. The only requirement is to keep a steady inhibitor
concentration in the system.
NALCOOL 2000 manufactured by
Nalco Company is a synergized inhibitor blend for metal passivation and sale
suppression as a water soluble corrosion inhibitor. It has been designed for
all common engine cooling systems and is ideal to protect ferrous metals,
copper & its alloys, aluminium etc. as well as rubber gaskets and
non-metallic components within the cooling system. NALCOOL 2000 is available in
liquid form making it easy to use and apply, fully compatible with water and
ethylene glycol based coolants. It does not contain chromates and has been
tested internationally to maintain a high degree of heat transfer efficiency
& long engine life.
Outstanding features of the product
include:
s
Protection
of all common cooling system metals
s
Cavitation
protection
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Minimized
sludge and scale formation
s
Liquid,
safe & easy to apply formulation
s
Compatible
with wide range of coolants and dyes
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Approved
by all leading automobile engine manufacturers
NALCOOL
2000 is the perfect corrosion & scale inhibitor for coolants in small
auxiliary diesel engines containing aluminium components.
ChemEqual is a vast online specialty chemical
database and NALCOOL 2000 as well as equivalent compositions of coolant
corrosion inhibitors can be found here from among a wide range of global suppliers.
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