Iron casting

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Product Overview
Ductile iron castings are metal parts made from ductile iron material, known for their high strength, toughness, and wear resistance. These castings are widely used in machinery, automobiles, municipal engineering, and other fields.

Manufacturer Information
Hansheng Automation is a leading automation solution provider, leveraging expertise in industrial automation to supply various precision components, including high-quality castings. Their reputation for quality has led to increasing demand from customers seeking reliable casting suppliers.

Features

• High strength: The tensile and yield strength of ductile iron are significantly higher than ordinary cast iron and approach some steels. Spheroidal graphite in ductile iron prevents crack propagation, increasing material strength.
• Good toughness: Spherical graphite reduces stress concentration, making the material less prone to breakage under impact.
• Excellent casting performance: Good fluidity allows for the production of castings with complex shapes.
• Wear and corrosion resistance: Performs better than ordinary cast iron in certain environments.
• Low cost: More cost-effective to produce compared to some steel materials.

Manufacturing Process

• Raw material preparation: Involves pig iron, scrap steel, carbon additives, spheroidizing agents, and inoculants. The quality ratio of these materials directly affects final product performance.
• Smelting: Pig iron, scrap steel, and recycled materials are melted in cupola or electric furnaces. Furnace temperature and chemical composition are strictly controlled.
• Spheroidization treatment: After reaching the required temperature, a spheroidizing agent is added to the molten iron to form spherical graphite, crucial for final product structure and performance.
• Inoculation treatment: Immediately after spheroidization, inoculant is added to improve the roundness, distribution, and quantity of graphite spheres, refining the metal matrix and enhancing mechanical properties.
• Casting and molding: The treated molten iron is poured promptly, with strict control of temperature and flow rate to ensure casting quality.
• Follow-up processing: After cooling, castings are cleaned and heat-treated (annealing, normalizing, quenching, tempering) to enhance strength, toughness, and wear resistance.

Applications

• Auto Industry
• Mechanical Manufacturing
• Municipal Infrastructure
• Architecture

FAQ

• Fields of use: Most widely used in automotive manufacturing and municipal water conservancy projects due to high performance, lightweight, long lifespan, and low maintenance. Also used in machinery, petrochemical, and construction industries for reliable structural components.
• Small batch production: Possible with customer-provided drawings and requirements; manufacturers ensure customized processing and quality.
• Cost factors for small batches: Influenced by raw materials, process complexity, and order size. Price per piece is higher than bulk, but cost can be reduced through supply chain and technical optimization.

Technical Specifications / Characteristics

• Material: Ductile iron
• Properties: High strength, high toughness, wear resistance, corrosion resistance
• Manufacturing process: Raw material preparation, smelting, spheroidization, inoculation, casting, molding, heat treatment
• Applications: Automotive, machinery, municipal engineering, architecture
• Production: Suitable for both bulk and small batch production