Investment casting service offered by Shenzhen Huarui Century Technology Co., Ltd. provides precision metal components for industries requiring high dimensional accuracy, complex geometries, and superior surface finish. Investment casting, also known as lost wax casting, is a sophisticated manufacturing process that utilizes wax patterns coated with ceramic shells to produce metal parts with intricate shapes and tight tolerances.
Huarui’s investment casting service is suitable for a wide array of materials, including stainless steel, carbon steel, alloy steel, heat-resistant steel, hardened steel, mild steel, brass (CuZn38, H62), aluminum bronze (AB2.863), and cast aluminum alloys (ZL101, ZL114A, A356). Components can reach sizes up to 1200mm × 800mm × 400mm and weights between 0.1kg and 120kg.
The process is widely applied in producing industrial machinery components, construction parts, valve and pump parts, impellers, hydraulic components, agricultural machinery, marine hardware, automotive parts, electric power fittings, and food machinery components. The capability to reproduce intricate details of the mold with high surface quality ensures that parts often require minimal secondary machining. The service integrates deburring, drilling, threading, and surface treatment such as heat treatment, polishing, plating, sandblasting, zinc plating, and e-coating, meeting both functional and aesthetic requirements.
Investment casting leverages precision wax patterns and ceramic molds, enabling dimensional tolerances ranging from CT4 to CT7, depending on component size and complexity. This process ensures consistent replication of the mold’s intricate details, including sharp corners, fine threads, and complex internal geometries. Repeatability across batches allows manufacturers to rely on uniformity and quality, reducing the need for rework or extensive quality control interventions.
Huarui’s investment casting achieves excellent surface finishes, typically between Ra 3.2 and Ra 6.3 μm, and in many cases even smoother. This high-quality surface reduces post-processing requirements, lowers production costs, and shortens lead times for assembly or finishing operations. Smooth surfaces are especially critical for components requiring precise mating surfaces, fluid flow passages, or aesthetic appeal in visible applications.
The investment casting process supports nearly all engineering alloys, including materials difficult to machine such as nickel-based superalloys, cobalt-based high-temperature alloys, stainless steels, tool steels, titanium alloys, and aluminum alloys. This versatility allows Huarui to meet the needs of aerospace, automotive, energy, and industrial machinery sectors, providing optimized solutions for high-performance applications.
Investment casting excels in producing components with internal cavities, undercuts, and complex three-dimensional shapes that are difficult or impossible to achieve with conventional machining or casting methods. Features such as internal channels, fillets, and intricate lattice structures can be directly formed during the casting process, reducing secondary machining and assembly complexity.
For components that require high precision and intricate detail but are produced in low-to-medium quantities, investment casting provides a cost-effective alternative to machining from solid blocks. Mold preparation and wax pattern production enable repeated use with minimal material waste, offering economical manufacturing without compromising quality.
Design Evaluation and Feasibility Analysis – Engineering teams review customer-provided 3D models, drawings, or CAD files to ensure manufacturability and optimal process parameters.
Wax Pattern Creation – Precision wax patterns are produced using injection or additive methods, replicating the component’s geometry with high fidelity.
Ceramic Shell Application – Wax patterns are coated with multiple layers of ceramic slurry and fine sand to form a hard shell that can withstand molten metal temperatures.
Dewaxing and Firing – The wax is melted out or burned off, leaving a hollow ceramic mold. The shell is then fired to achieve structural rigidity and thermal stability.
Metal Pouring – Molten metal is poured into the ceramic mold under controlled conditions to ensure complete filling of intricate features and minimal porosity.
Cooling and Shell Removal – The casting is cooled to room temperature, and the ceramic shell is carefully broken away to reveal the finished part.
Secondary Operations – Components undergo deburring, drilling, threading, and additional surface treatments such as heat treatment, polishing, plating, or e-coating as specified.
Quality Inspection – Parts are examined for dimensional accuracy, chemical composition, surface finish, and structural integrity using tools such as CMM, X-ray radiography, and spectrum analysis.
Packaging and Delivery – Finished components are packaged according to customer requirements, ensuring protection during transit and timely delivery.
This workflow ensures consistent production quality, high repeatability, and precise replication of complex designs.
| Parameter | Specification |
|---|---|
| Place of Origin | Guangdong, China |
| Brand Name | HUARUI |
| Model Number | HR |
| Product Name | Die Casting Part, Sand Casting, Investment Casting |
| Process | Casting, Deburring, Drilling, Threading |
| Certification | ISO9001 |
| Service | Customized OEM |
| Size | Customer’s 3D Drawing |
| Surface Treatment | Customer’s Demand |
| Tolerance | Customer’s Drawing Request |
| Standard | Client Specification |
| Color | Customized Color |
| Quality Control | Strictly 100% Inspection |
| Materials | Stainless steel, carbon steel, alloy steel, heat-resistant steel, hardened steel, mild steel, brass, aluminum bronze, cast aluminum alloys |
| Surface Finish | Ra1.6–Ra3.2 |
| Maximum Size | 1200mm × 800mm × 400mm |
| Weight Range | 0.1–120kg |
| Application | Industrial, Machinery, Construction, Valve, Pump, Impeller, Hydraulic, Agricultural, Marine, Automotive, Electric Power, Food Machinery |
For professional investment casting services, contact Shenzhen Huarui Century Technology Co., Ltd. with your CAD files or 3D drawings. Our engineering team will provide technical consultation, precise quotations, and tailor-made solutions to meet your production requirements.
Almost all engineering alloys are compatible, including stainless steel, carbon steel, alloy steel, nickel-based superalloys, cobalt-based high-temperature alloys, titanium alloys, tool steels, and aluminum alloys.
Components can measure up to 1200mm × 800mm × 400mm and weigh between 0.1kg and 120kg, depending on design requirements.
Dimensional tolerances of CT4–CT7 can be achieved, allowing precise replication of mold details, including threads, fillets, and internal channels.
Surface roughness typically ranges from Ra 3.2 to 6.3 μm, reducing the need for secondary machining. Additional finishes such as polishing, plating, heat treatment, or coating can be applied as required.
Investment casting is ideal for aerospace, automotive, industrial machinery, energy, medical equipment, and precision components requiring complex geometries and high-performance materials.
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