OEM Sand Cast Iron Auto Housing Parts​

Product Overview

OEM Sand Cast Iron Auto Housing Parts are essential for protecting critical automotive components, combining the inherent strength of cast iron with the versatility of sand casting to produce robust enclosures for engines, gearboxes, and drivetrain systems. Sand casting, a time-tested manufacturing method, allows for complex geometries and thick-walled structures that withstand extreme mechanical stress and temperature fluctuations. As a trusted partner to automotive OEMs, we deliver housings engineered to exact specifications, ensuring seamless integration into assembly lines and long-term performance under harsh operating conditions. Our cast iron alloys (e.g., GG25, GG30) provide superior vibration damping and wear resistance, making them ideal for high-load applications.

Product Features

Material Strength: Made from gray cast iron with a tensile strength of 250–350 MPa and Brinell hardness of 180–240 HB, these housings resist deformation under heavy loads and impact.

Complex Geometry Capability: Sand casting enables the production of housings with intricate internal cavities, ribs, and mounting features without the need for secondary machining, reducing production time.

Thermal Stability: Cast iron’s high melting point (≈1,200°C) and low thermal expansion coefficient (10–12 μm/m·K) ensure dimensional stability in engine bays where temperatures exceed 150°C.

Cost-Effective Production: Sand casting tooling costs are 30–50% lower than die casting alternatives, making it ideal for medium-volume OEM projects (10,000–500,000 units/year).

Applications

These housings are integral to numerous automotive systems:

Engine Systems: Cylinder blocks, crankcase housings, and timing chain covers protect internal components from debris and fluid leaks.

Transmission & Drivetrain: Gearbox housings, differential cases, and clutch housings withstand torque forces up to 1,500 N·m in heavy-duty vehicles.

Brake & Steering Systems: Brake caliper housings and power steering pump enclosures rely on cast iron’s rigidity for precise operation.

Auxiliary Systems: Alternator and water pump housings provide structural support while dissipating heat from moving parts.

FAQ

Q: What is the typical lead time for OEM sand cast iron housings?

A: Tooling development takes 8–12 weeks, with production lead times of 4–6 weeks for initial batches. We offer expedited options for critical projects.

Q: How do you prevent porosity in sand cast housings?

A: Our process includes vacuum degassing of molten iron and controlled cooling rates, resulting in porosity levels below 2% by volume, verified via ultrasonic testing.

Q: Can sand cast housings be machined to tight tolerances?

A: Yes, post-casting machining achieves IT7–IT9 tolerances on critical surfaces (e.g., bearing bores), with surface finishes as smooth as Ra 3.2 μm for seal compatibility.