Machine tool casting primarily uses gray iron and ductile iron to form bases, columns, and spindles that resist vibration and maintain geometric integrity. Gray iron’s superior damping capacity up to 10 times better than steel absorbs machining chatter, enabling finer surface finishes on workpieces.
These castings undergo critical design phases, including ribbing for stiffness and core sand for internal voids, achieving tolerances as tight as ±0.1mm. Sagar Foundry’s no bake molding process excels here, producing large scale beds weighing over 5 tons with minimal distortion during cooling.
Heat treatment follows, stress relieving castings at 550°C to prevent warping under load, a step vital for tools like CNC lathes where sub micron precision defines output quality.
