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Ductile Iron

Ductile Iron Manufacturing Flow Chart

01

Raw Material

(Pig Iron + Steel Scrap + Ferroalloys + Recarburizer)

02

Melting Furnace

(Induction Furnace melting at high temperature (~1450–1500°C))

03

Composition Control

(Carbon (C), Silicon (Si), Manganese (Mn) correction Sulphur & Phosphorus control)

04

Nodulizing

(Mg Treatment) (Addition of Magnesium (Mg) or Fe-Si-Mg alloy Converts graphite into spherical (nodular) form)

05

Inoculation

(Addition of Ferrosilicon Improves graphite formation & reduces carbide)

06

Pouring into Mould

(Sand mould prepared green sand / resin sand Molten metal poured into mould)

07

Solidification

(Controlled cooling to form ductile structure)

08

Shakeout & Cleaning

(Casting removed from mould Shot blasting / grinding for cleaning)

09

Heat Treatment

(Annealing / Normalizing for property improvement)

10

Inspection

( Dimensional check ,Hardness & tensile testing )

11

Finished Ductile Iron Casting

(Ductile Iron Casting ready for machining or use)

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