Benefits of Malleable Cast Iron

Benefits Of Malleable Cast Iron

What is Malleable Cast Iron? ďƒ˜ Cast iron is a common term used to refer a wide variety of irons. These include ductile iron, malleable cast iron, gray iron compacted graphite iron and white iron to name a few. ďƒ˜ Metal structure which includes graphite is the basic structure of all cast irons. Cast irons have a high silicon content which helps them to fight corrosion and be strong.

Qualities of Malleable Cast Iron ďƒ˜ The qualities of all cast iron can be adjusted or engineered according to the use it is subject to. The differences are brought about by heating and annealing. ďƒ˜ The temperatures at which this treatment subjects the iron to are at sub critical. The heating is necessary to take the carbon from the graphite and place the same on the matrix. The surface is further hardened with heating.

ďƒ˜ Out of this Malleable iron is made from iron with some added elements or chemicals. The nodules or spheroids are shaped in an irregular manner. The tensile properties set apart malleable iron from the others in cast iron category. ďƒ˜ This is caused by the strength in casting. There should be a link between test bar properties and casting hardness. The strength and hard nature is generally not referred together.

Content of Malleable Iron ďƒ˜ Malleable iron is made up of a carbon content of .02 to .08 %.

Generally other cast iron has a higher carbon content which is generally higher than 2% to less than 5%. ďƒ˜ This iron is made with first preparing white iron cool quickly to avoid the graphite flakes from appearing. White cast iron is heated or annealed to high temperatures and many elements are added during this process.

ďƒ˜ The carbon in this iron then leaves the metal and a little quantity remains as graphite particles. A large amount of liquid metal is kept o adding to this as it eliminates breaks. The process gives us malleable iron. ďƒ˜ The iron so obtained is very machinable and has a high resistance. The only major disadvantage is that it shrinks or loses volume during cooling.

Uses of Malleable Iron ďƒ˜ Malleable iron is used in many places like universal jolts crankshaft connecting rods and used majorly in marine equipment and also railways. ďƒ˜ In the automotive industry malleable cast iron parts are used for cylinder blocks and heads as well as gearbox cases.

Malleable cast iron fittings can withstand high pressure conditions so it can be used in heating, cooling, and safety systems.

Types of Malleable Iron ďƒ˜ There are two types of malleable cast iron which is corrosion resistant and elevated temperature service. The corrosion resistant type is used for components used in acidic and alkali areas. ďƒ˜ It is also used in saltwater marine environment and well water which is normally very corrosive in nature. Cast versions of corrosion resistant nickel alloys are used for pumps, valves and other components in the chemical and related industries.

ďƒ˜ The next variety is used in all places where there is high impact and load bearing as it is very fracture resistant. It can be cast in any type of shape and it’s the best advantage. It is also used in food material handling and transportation. ďƒ˜ Many chemical processing plants and petroleum refineries use this iron. It can be used to the best advantage for its strength and stable nature.

Visit VR Foundries is one of the best casting foundries in India.

They manufacture SG (Ductile) & grey iron casting products for various industries such as automobiles, pump manufacturers, textiles, hydraulics and more.