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- 产品描述
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Ductile iron castings are high-performance cast iron products produced through spheroidization treatment, which results in the precipitation of graphite in spherical form. Their comprehensive performance is close to that of steel, making them widely used in various industrial fields.
Core Features
Excellent mechanical properties
The tensile strength can reach 600-1000 MPa, the yield strength is 400-800 MPa, the elongation is 2%-24%, and the yield ratio (0.7-0.8) is higher than that of ordinary steel (0.59-0.60).
The graphite nodular structure eliminates the stress concentration effect of flaky graphite, with a matrix strength utilization rate of 70%-90%, and its fatigue strength is significantly superior to that of gray cast iron.Outstanding cost-effectiveness
The cost of raw materials is lower than that of steel and only slightly higher than that of gray cast iron; the casting efficiency is high, the machining cost is low, and the overall cost-performance advantage is obvious.
Wide environmental adaptability
It exhibits excellent low-temperature resistance, impact resistance, and corrosion resistance, making it suitable for extreme operating conditions (such as high altitudes and marine environments).
High process flexibility
By adjusting the chemical composition (such as carbon, silicon, and alloy elements) and heat treatment process, different matrix structures such as ferrite, pearlite, and bainite can be obtained to meet diverse performance requirements.
Production Process Flow
Spheroidizing treatment
Adding rare earth magnesium alloy nodulizer to the molten iron can transform the graphite from flaky to spherical, reducing the fracturing effect on the matrix.
Inoculation treatment
Adding ferrosilicon inoculant can refine the size of graphite nodules, increase the number of nodules per unit area, and enhance strength and toughness.
Casting Process
Centrifugal casting: used for producing pipe fittings (such as municipal water supply pipes), with dense structure and high pressure resistance.
Sand casting: including processes such as clay sand, resin sand, and precoated sand, which can accommodate different batch sizes and precision requirements.
Lost foam casting: suitable for complex structural components, with high dimensional accuracy and small machining allowance.Quality control
Strictly control the sulfur and phosphorus content (sulfur ≤ 0.02%) to avoid the formation of inclusions; maintain the temperature of the molten iron 30-50°C higher than that of gray cast iron to ensure nodularization stability.
Reasons for Choosing Us
Wide Range of Specifications
Manufacturers
Timely Delivery
Thoughtful Service
Customization Supported
Carefully Selected Materials
Company Advantages
High-Quality Castings
The castings feature a smooth surface, high dimensional accuracy, minimal internal defects, and a dense microstructure.
High Production Efficiency
The casting production process is simplified, eliminating complex steps such as core making and core setting, thereby enhancing production efficiency.
Environmentally Friendly and Energy-Saving
The entire process is pollution-free, consumes minimal materials, and aligns with the concept of green casting. It is particularly suitable for producing castings with complex shapes and internal cavities, such as cylinder blocks, cylinder heads, and other box-type castings.
Wide Range of Materials
It can be applied to various metal materials, including steel, iron, aluminum, and magnesium, making it suitable for producing castings of different structures and sizes.
Our Customization Process
Demand Communication & Solution Design
► Material Selection (Cast Iron / Cast Steel / Alloy)
► Accuracy Grade (CT8-CT12)
► Surface Treatment (Sandblasting / Painting / Coating)
► Load Capacity & Operating Conditions (Supports Bed Frames ≥10 Tons)
Mold Development & Process Design
► 3D Mold Design / Rapid Manufacturing
► Casting Process Simulation & Optimization
► Development of Customized PFMEA Risk Control Plans
► Intelligent Matching of Smelting Parameter Database
Casting Production & Sample Verification
► Intelligent Smelting & Pouring (Real-Time Spectral Composition Monitoring)
► Full-Dimensional Inspection of First Articles:
✓ Metallographic Structure
✓ Mechanical Properties
✓ X-Ray Inspection
► Issuance of Test Reports Compliant with ASTM/GB Standards
Mass Production & Full-Inspection Control
► Casting Blank → Rough Machining → Semi-Finishing → Finishing
► Full-Size CMM Measurement (Accuracy ±0.01mm)
► Mechanical Property Testing for Each Batch
Delivery & After-Sales Service
Clarification of Logistics & Product Delivery Matters, as well as After-Sales Service Details.
FAQ
Can you accept small quantities?
Yes, accept small quantity, fast delivery
Do you have pre-shipment inspection procedures?
Yes, we always test the products before delivery.
Can I take samples for testing?
Yes, samples can be sent for testing before bulk ordering.
When is the delivery time?
Inventory orders within 7-15 days, for oem and odm orders, the specific time depends on the actual situation.
What are the terms of payment?
Wire transfer or letter of credit, Western Union, Alipay, etc.
What is the minimum order quantity?
It depends on the product.
China 3D welding table
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CONTACT US
WhatsApp: 8618830115267
Tel: +86-18830115267
E-mail: sales@tianchengcasting.com
Factory Add: Baotou City, Cangzhou City, Hebei Province, China