Materials

Cast iron parts machining

High-performance CNC machining services for cast iron parts!

Our Cast Iron Parts Machining Services

With many advantages, we provide our customers with high-precision and high-quality cast iron parts, ensure on-time delivery, and help you improve the competitiveness of your products.

20+ years experience:
With more than 20 years experience in cast iron parts machining, we have mature technology and reliable service.
Own Factories & Advanced Equipment:
Two own factories and more than 200 modern equipments ensure efficient and accurate machining.
Full machining capability:
We specialize in processing gray cast iron and ductile cast iron with advanced technology and high precision to meet various needs.
Precise and efficient process:
Optimized machining process ensures precision at every step and smooth transformation from casting to parts.
Fast delivery and professional service:
Provide fast delivery and full support to meet customized and urgent order requirements.

Commonly Machined Cast Iron Parts

Cast iron is commonly used to make the following parts, and is especially suited for components that require high strength, wear resistance, and vibration dampening properties:

Characteristics of cast iron

High strength and hardness:
Cast iron has high strength and hardness and is suitable for bearing mechanical loads.
Wear resistance:
Cast iron is a reliable wear-resistant material, especially suitable for heavy loads and long running parts.
Fast machining:
Cast iron can be machined faster than many steel grades, enabling increased productivity.
Good casting properties:
Cast iron flows well, making it easy to cast complex shapes and suitable for mass production.
Excellent vibration damping:
Cast iron can effectively absorb vibration and reduce noise during equipment operation.
Cost-effectiveness:
Cast iron has a low cost, making it a cost-effective material choice.

Common Cast iron Parts Machining Methods

CNC Turning

Precise cutting by rotating the metal, suitable for cylindrical parts.

CNC Milling

Multi-axis machines carve complex part shapes from a block of metal.

3D Printing

Building parts layer by layer, suitable for prototyping and small batch production.

Rapid Prototyping

Rapid manufacturing of parts, suitable for testing before mass production.

Sheet metal fabrication

Cutting and bending sheet metal into shape, often used for housings or brackets.

Casting

Pouring molten metal into a mold, suitable for complex shapes and high volume production.

Cast Iron Parts Finishing

After machining cast iron parts, finishing or surface preparation is often required to enhance the quality, durability and appearance of the part. The following are commonly used finishing methods:

Sandblasting

Sandblasting utilizes a high-speed jet of sand to clean the surface of the part, which removes oxides, impurities, and burrs, increases surface roughness, and lays the foundation for subsequent coatings. It not only improves the appearance, but also enhances the coating adhesion and wear resistance.

Spray Painting

Spray painting provides corrosion protection and enhances the appearance of cast iron parts. Spray paint provides both rust protection and color, making it ideal for parts where aesthetics and protection are important.

Powder Coating

Powder coatings are more durable and environmentally friendly than traditional liquid coatings. They form a strong coating on the surface of the part that protects against corrosion and abrasion, is heat and UV resistant, and is suitable for parts that are exposed to harsh environments.

Electroplating

Electroplating deposits metal ions on the surface of the part by means of electric current, forming a protective layer to enhance corrosion resistance and finish. It is suitable for parts requiring high corrosion resistance and high finish, and is widely used in automobile, machinery, electronics and other fields.

Cast Iron Parts Machining Methods Comparison：

Machining Method	Features	Applications	Tolerances	Surface Finish	Cost
CNC Turning	Ideal for cylindrical parts, high precision, efficient production	Mechanical parts, automotive components	±0.01 mm	Smooth (Ra 0.8-1.6 µm)	Medium
CNC Milling	Multi-axis machining for complex geometries	Aerospace, molds, mechanical components	±0.01 mm	High quality (Ra 0.8-3.2 µm)	Medium
3D Printing	Layer-by-layer manufacturing, suitable for prototypes and complex parts	Prototypes, complex geometries	±0.01 mm	Adjustable, rough to smooth	Low to medium
Rapid Prototyping	Quick production for testing and prototyping	Design iterations, test samples	±0.01 mm	Variable	Low
Sheet Metal Fabrication	Suitable for large, thin parts with bending and cutting	Enclosures, brackets, panels	±0.5 mm	Variable	Low
Casting	Mass production of complex shapes, suitable for durable parts	Engine housings, mechanical components	±0.01 mm	Medium (Ra 6.3-12.5 µm)	Low

Brief Explanation of Cost Comparison:

1. 1. CNC Turning and CNC Milling:
    High precision, moderate cost, suitable for high-demand precision machining.
  2. 3D Printing:
    Ideal for small batch production and complex parts, low upfront cost but higher for mass production.
  3. Rapid Prototyping:
    Lowest cost, ideal for quickly validating design concepts and prototypes.
  4. Sheet Metal Fabrication:
    Good for large-sized or thin parts, lower cost, efficient for mass production.
  5. Casting:
    Best for large quantities and complex shapes, lowest per-unit cost, though initial tooling can be expensive.