Grey iron castings are cast in green sand
and on bake mold processes. It has made its presence in a wide range of
products used in automotives, aerospace and transportation industries. Known
for its resistance to cracking and high temperatures, gray cast iron of high
quality is brought to you in its best way by B.K.Castings.
Grey Iron is the oldest form of cast iron and available in the most common
way. The terms "cast iron" and "gray iron" are used
interchangeably. Gray Iron named after its gray color appearance, consists
of carbon that is in the form of flake graphite that is made of ferrite or
pearlite or a mixture of both. Gray Iron is used for a number of production
purposes, like shrinkage free castings, intricate castings due to its
liquidity characteristics and ability to expand during the solidification
process due to the formation of graphite.
Grey Iron Casting Process
We can produce casting in Co2, N-bake, Four - part ABC, and Green
Sand process.
Manufacturing & inspection of pattern as per customer's
drawing, specification with close tolerances.
Preparation of disposable wax patterns by injection molding &
inspection of wax patterns.
Assembling of wax patterns on runner to form assembly. 5.
Building a ceramic shell by alternate dipping of the assembly in a
ceramic slurry and stuccoing under controlled conditions of humidity
as temperature.
Drying and de- waxing the ceramic shells.
Pouring melting metal in the sintered shell, fettling, and heat
treatment and cleaning of the casting.
Inspection and testing which includes 100% visual inspection,
dimensional checks, non destructive examinations.
Application
Our Castings are inputs to many diverse core sector industries. That these
Industries have reposed their faith in us speaks for our ability to meet
challenges with success.The industry range that we cater to are as under:
Ductile Iron, being a collection of
materials, it has to offer a wide range of properties due to microstructure
control. It shares the property of consisting of rough and spherically
shaped graphite nodules which act as crack - arresters thus making the iron
ductile. This makes the iron more consistent and is measured very accurately
in the Iron foundries.
Developed in the 1940s it has been used in numerous engineering and casting
applications. Crack-promoting graphite flakes of iron undergo alloying
process to give this ductile iron nodule. With the help of the
microstructural transformation process, metal with superior quality,
ductility, elongation characteristics and machinability is obtained. Metal
that has to offer unique strength, wear and tear resistance, fatigue
resistance and toughness is obtained. Metal with high ductility is also
obtained thus making it suitable for investment.
