S G CASTING AND CNC MACHINING

S G CASTING

S G Iron is also known as Spheroidal Graphite Iron, Ductile Cast Iron, Nodular Cast Iron, Spherulitic Graphite Cast Iron. S G Iron is a type of cast iron that has been treated while molten with an element such as magnesium or cerium to induce the formation of free graphite as nodules or spherulites. This imparts a measurable degree of ductility (easily manipulated) to the cast metal. The ductile iron family offers the design engineer a unique combination of strength, wear resistance, fatigue resistance, and toughness, as well as excellent ductility characteristics.

S G Iron/Ductile iron is not a single material but is part of a group of materials which can be produced to have a wide range of properties through control of the microstructure. The common defining characteristic of this group of materials is the shape of the graphite. In ductile irons, the graphite is in the form of nodules rather than flakes as it is in grey iron. The sharp shape of the flakes of graphite create stress concentration points within the metal matrix and the rounded shape of the nodules less so, thus inhibiting the creation of cracks and providing the enhanced ductility that gives the alloy its name.

This nodular graphite structure inhibits the creation of linear cracks hence the ability to withstand distortion.

CNC MACHINING

Computer Numerical Control (CNC) machining is a manufacturing process in which pre-programmed computer software dictates the movement of factory tools and machinery. The process can be used to control a range of complex machinery, from grinders and lathes to mills and CNC routers.

Computerized Numerical Control (CNC) Machining is a method used to perform a wide range of manufacturing tasks, which are all carried out by computerized devices.

The term CNC stands for ‘computer numerical control’, and the CNC machining definition is that it is a subtractive manufacturing process that typically employs computerized controls and machine tools to remove layers of material from a stock piece—known as the blank or workpiece—and produces a custom-designed part.

What is CNC Machining Used For?

Computer Numerical Control (CNC) machining is a process used in the manufacturing industry that employs speeds and versatility not available with other conventional methods of machining. These automated machines perform precise machining with incredible repeatability. In the die casting industry, CNC machining is used to modify die cast parts and produce features that cannot be produced in the die casting mold. This allows us to tailor parts to the specific needs of customers and send parts ready for assembly.

CNC machining can be beneficial for removing edge rounds and draft angles, which is often required to complete the high-pressure die casting processes. Our precision CNC machining services can effectively remove these elements and improve the overall surface quality of the part.