Intake Manifold

Description

Parameter / Process	Specification & Technical Highlights	Customer Benefits / Value
Material	GX40CrNiSi25-20 (EN 1.4848 / High-Performance Cast Steel)	Delivers extreme thermal shock endurance and excellent oxidation resistance under constant high-temperature automotive exhaust gas.
Application Scenario	Automotive Field / Six-Cylinder Engines / High-Performance Turbo & Exhaust Systems	Specifically designed for multi-cylinder performance engines demanding perfect flow balancing and thermal durability.
Unit Weight	10.39 kg (Heavy-Duty Large Scale)	Showcases our mature capability in pouring large-scale, heavy precision investment castings without shrinkage.
Tooling Design	Advanced Split Design	The exterior mold and interior cavity utilize a tailored split configuration, enabling exact reproduction of aggressive, multi-bend profiles.
Core Technology	Water-Soluble Core Molding for long-through holes	Successfully forms seamless, multi-bend long-through holes that guide high-velocity exhaust gas smoothly, reducing engine backpressure.
Pouring System	Multi-Gate Gating System	Optimized flow simulation; multi-gate filling ensures flawless mold shell filling, preventing cold shuts and micro-porosity in complex webs.
Casting Tolerance	ISO 8062 (GB/T6414) CT6 Grade	High near-net-shape accuracy simplifies CNC flange facing and ensures precise head-to-manifold bolt alignment.

To ensure the long-term structural integrity of this large 6-cylinder component under cyclic thermal loads, we perform rigorous standard testing:

Long-Through Hole Clearance Check: 100% video-endoscope verified to ensure all multi-bend channels are completely clear, with zero water-soluble core residues or internal slag inclusions.
Dimensional & Planarity Inspection (CMM): Measured via Coordinate Measuring Machines to verify the tight tolerances of the exhaust port layout, ensuring zero warping across the long mounting flange surface.
Metallurgical & Chemical Stability: Analyzed by Spectrometers to ensure exact GX40CrNiSi25-20 alloy consistency for continuous 1000°C engine operation.
Subsurface NDT Testing: Screened with Liquid Penetrant Testing (LPT) to guarantee that joint radiuses and critical walls are free from microscopic thermal cracks.

Complex Multi-Cylinder Customization: We specialize in casting performance exhaust manifolds (4-cylinder, 6-cylinder, V8) and turbochargers based on your 3D digital data (STEP, IGES).
Flexible Surface Post-Treatments: Standard shot-blasting or custom high-temperature uniform pickling are available upon technical request.
Audit-Ready Verification: Complete material certificates (EN 10204 3.1) and detailed CMM dimension logs are provided to support your tier-1 automotive manufacturing audits.