Ductile Cast Iron Parts

Ductile Cast Iron Castings from Original Manufacturer in China

As a ductile cast iron parts manufacturer and foundry, RMC can pour iron castings using our No-bake process up to ten tons finished weight in gray iron castings and ductile iron castings, and up to five tons in steel castings and stainless steel castings. RMC can produce casting parts in a wide variety of materials, including grey iron, ductile iron, stainless steel, carbon steel, wear-resistant steel, and heat-resistant steel based on different standards from China and overseas. Ductile cast iron, which is represent a group of cast iron, also called nodular iron. Nodular cast iron obtains nodular graphite through spheroidization and inoculation treatment, which effectively improves the mechanical properties of the cast iron, especially the plasticity and toughness, so as to obtain higher strength than carbon steel.

Ductile iron castings have better shock absorption performance than carbon steel, while carbon steel castings have much better weldability. And to some extent, the ductile iorn castings could have some performances of resistanting wear and rust. So the ductile iron casting could be used for some pump housings or water supply systems. However, we still need to make precautions for protecting them from wearing and rust.

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. So generally speaking, if the ductile iron could meet your requirements, the ductile iron could be your first choice, instead of carbon steel for your castings.

▶ Capabilities of Sand Casting moulded by hand:

• Max Size: 1,500 mm × 1000 mm × 500 mm

• Weight Range: 0.5 kg - 500 kg

• Annual Capacity: 5,000 tons - 6,000 tons

• Tolerances: On Request.

▶ Capabilities of Sand Casting by Automatic Molding Machines:

• Max Size: 1,000 mm × 800 mm × 500 mm

• Weight Range: 0.5 kg - 500 kg

• Annual Capacity: 8,000 tons - 10,000 tons

• Tolerances: On Request.

▶ Main Production Procedure

• Patterns & Tooling Design → Making Patterns → Moulding Process → Chemical Composition Analysis → Melting & Pouring → Cleaning, Grinding & Shot Blasting → Post Processing or Packing for Shipment

▶ Post-Casting Process

• Deburring & Cleaning

• Shot Blasting / Sand Peening

• Heat Treatment: Normalization, Quench, Tempering, Carburization, Nitriding

• Surface Treatment: Andonized, Hot Dip Zinc, Polishing, Painting,

• Machining: Turning, Milling, Lathing, Drilling, Honing, Grinding,

▶ General Commerial Terms

• Main workflow: Inquiry & Quotation → Confirming Details / Cost Reduction Proposals → Tooling Development → Trial Casting → Samples Approval → Trial Order → Mass Production → Continuous Order Proceeding

• Leadtime: Est. 15-25 days for tooling development. Est. 20 days for mass production.

• Payment Terms: To be negotiated.

• Payment methods: T/T, L/C, West Union, Paypal.

The following is the comparison of the ductile iron from different standards.

The Sand Casting Facilities at RMC: