Collage of ductile iron castings, machined components, worm gears, spur gears, sand castings, investment castings and die castings

Articles about Castings, Machined Components and more!

The history of mechanical engineering is as old as civilization. Indeed, humanity would never have been where it is right now without the invention of manufacturing processes like castings and machined components.

Stay with us as we explore this subject via interesting articles in this knowledge base.

Castings Basics

Casting is a mechanical process whereby a molten metal or its alloy is poured in a mould and allowed to solidify. The object then gets the shape of the mould.

Castings are integral to the engineering industry, and have been in use for the last 6000 years. Casting is a mass production process that involves pouring of a liquid into a mould of desired shape, which is then allowed to cool.

Ductile Iron Casting - The Process

Ductile iron casting refers to a process in which magnesium / Cerium (as an alloy of magnesium / Cerium) is added to cast iron. It was first manufactured by K.D. Mills in 1943. While most varieties of cast iron are comparatively brittle, ductile iron castings are much more ductile due to the inclusion of nodular graphite. Solidified castings of ductile iron contain nearly perfect spheres of graphite.

Flywheel Flanges

Flywheels are mechanical components that store kinetic energy and convert it later into circulatory motion. Essentially, these are big wheels that require a lot of momentum to start, but once they start are hard to stop.

Gear Cases

There are various types of gears like spur gears, bevel gears, rack and pinion, helical gears, etc. By their very definition gears mesh with each other. It is therefore very important to keep the teeth and the meshing area free of anything that interferes with their working.

Spur Gears, Helical Gears, Bevel Gears and Worm Gears

A gear is a mechanical component with tooth members that transmit either power or motion between two shafts.

Machined Castings

Machining is a material removal process (like cutting, grinding, etc.) that uses some sort of cutting tools to produce the desired size and shape in an object. The object is typically cut from a larger piece of stock, which is available in a variety of standard shapes.

Machined Components

Machining is a process that uses tools like milling, shaping, drilling, etc. to work on material to give it different shape or size.

Pump Housings

A pump is a mechanical device that provides sufficient pressure to move the fluid through the system at the desired flow rate. It is therefore a means of transforming mechanical work into fluid energy.


Rotors are defined as any mechanical parts that rotate. Rotors are ubiquitous - they are used in diverse applications like turbines, turbopumps, centrifugal pumps, fans, centrifugal compressors and other thermal and hydraulic machines.

Windmill Hubs

Windmills can be horizontal axis or vertical axis, though the horizontal axis windmills are most common.

Applications of Ductile Iron Castings

Cast iron is an alloy that contains more than 2 to 2.5% carbon. It is also called as grey cast iron. It is also called as grey cast iron.

Effects of Various Elements in Ductile Iron Castings

Ductile iron has grown in prominence as the chosen material in castings. It is highly tensile, has excellent castability and better mechanical properties than cast iron or gray iron. It also is low cost casting material.

Mechanical Properties of Cast Iron

Cast iron is an alloy of carbon (over 2%) and other elements. The rigidity and dampening factor of cast iron make it an excellent material for machine tool frames and parts.

Inoculation of Cast Iron

Inoculation is an important process in the production of cast iron. Essentially, inoculation means fast cooling of the cast iron production to enhance its qualities.

Heat Treatment of Ductile Cast Iron

Mechanical properties of alloys and castings are structure-sensitive. Their magnitude largely depends on size, shape and distribution of various micro constituents.