| 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:
This intake manifold is presented as a representative custom‑manufactured component for Application and host equipment must be confirmed against the approved drawing before publication. Honyang Cast develops similar parts from customer drawings rather than offering a fixed catalog specification.
The manufacturing plan must connect the part's functional geometry—Large six‑cylinder component; Multi‑bend long‑through holes; Long mounting flange—with tooling, investment casting, machining and measurable inspection requirements. Final dimensions, interfaces and acceptance criteria are confirmed during drawing review.
PROJECT‑SPECIFIC SUPPLY
Material grade, dimensions, tolerance zones, machining allowance, surface condition, operating requirements and inspection records are confirmed after review of the customer’s 2D drawing, 3D model and project specification.
The parameter set is selected for this component’s function. Unknown values remain drawing‑controlled and must not be replaced with generic catalog data.
| Engineering Item | Reference / Custom Requirement | Verification Basis |
|---|---|---|
| Material grade | GX40CrNiSi25‑20; Page also gives EN 1.4848 | Confirm governing standard and chemistry requirements. |
| Part weight | 10.39 kg | Confirm target weight and allowable variation when relevant. |
| Functional geometry | Large six‑cylinder component; Multi‑bend long‑through holes; Long mounting flange | Identify drawing datums and critical‑to‑function features. |
| Casting / process reference | Advanced split tooling design; Water‑soluble core molding; Multi‑gate gating system; Optional shot blasting or high‑temperature pickling is described | Confirm which steps apply to the quoted production route. |
| Dimensions and tolerances | To be confirmed from customer drawing. | Define casting tolerance separately from machined dimensions and GD&T. |
| Operating conditions | To be specified by customer. | Provide medium, load, temperature, pressure, speed or hygiene requirements as applicable. |
| Recommended additional fields | Confirm intake/exhaust designation and add port layout, wall thickness, flange flatness and service conditions. | Complete before publishing numeric claims or quoting production. |
| Structural Feature | Why It Matters | Manufacturing Response |
|---|---|---|
| Large six‑cylinder component | This feature influences fit, flow, load transfer, manufacturability or downstream assembly. | Review core strategy, cavity access, local wall thickness and cleanliness verification for the internal or intersecting features. |
| Multi‑bend long‑through holes | This feature influences fit, flow, load transfer, manufacturability or downstream assembly. | Review core strategy, cavity access, local wall thickness and cleanliness verification for the internal or intersecting features. |
| Long mounting flange | This feature influences fit, flow, load transfer, manufacturability or downstream assembly. | Review core strategy, cavity access, local wall thickness and cleanliness verification for the internal or intersecting features. |

A project‑specific route is established after review of geometry, alloy, tolerance, volume and validation requirements.
Source Page Process References
PROCESS SCOPE
Investment casting and CNC machining are described as the core route. Heat treatment, coating, polishing, balancing, pressure testing, radiographic testing, PPAP or other special processes must be shown as project‑specific unless their scope is confirmed.
Honyang Cast supports drawing‑based development of intake manifold and related investment cast components from manufacturability review through sample approval and repeat production.
| Application Requirement | Manufacturing Value |
|---|---|
| Drawing‑defined fit and function | A part‑specific DFM and inspection plan links casting geometry to the actual assembly and operating requirement. |
| Integrated complex geometry | Investment casting can consolidate features and reduce fabrication or excessive stock removal where the approved design supports it. |
| Repeatable critical interfaces | Controlled datums, machining and inspection support consistent assembly of functional surfaces and mating features. |
| Material and process traceability | Agreed material and inspection records provide evidence against the drawing and quality plan. |
| Product‑specific value | Do not generate final sales copy until the intake‑versus‑exhaust mismatch is resolved. |
Design Inputs Required From the Customer
SEND YOUR DRAWING FOR A MANUFACTURABILITY REVIEW
Upload the drawing and 3D model for your exhaust pipe together with material, quantity, operating conditions and inspection requirements. Our team will review the casting route, machining scope and quality plan before quotation.