Investment Casting Services
- We provide precision investment casting services that deliver near-net-shape parts with excellent dimensional accuracy and smooth surfaces.
- From design to final assembly, we offer complete, ready-to-use components tailored to your industry's performance and material needs.
- Dimensional Accuracy: ±0.1 mm -- ±2.0 mm
- Main Process Types: Silica Sol, Water Glass
- Compatible with Most Metals
- Supports Complex Part Designs
- No Flash or Parting Lines
- Environmentally Friendly Casting Process
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Our Investment Casting Process
Equipped with a new shell automation line for all part sizes, we ensure precise investment casting with tight tolerances, smooth surfaces, and material consistency.
Wax Pattern Creation
Inject molten wax into metal molds to produce detailed wax replicas of the desired part.
Pattern Assembly
Combine several wax patterns onto a main wax sprue to create a tree-like assembly.
Shell Building
Immerse the wax assembly in ceramic slurry and sprinkle it with sand repeatedly to build a durable shell.
Wax Removal
Place the shell in a furnace or autoclave to melt and remove the wax, forming a hollow ceramic mold.
Shell Firing
Fire the hollow ceramic mold at high temperatures (870°C to 1095°C) to remove moisture and improve strength for casting.
Metal Pouring
Heat the metal until molten, then pour it into the preheated ceramic mold to precisely fill the cavity.
Shell Removal
Once cooled, remove the ceramic shell mechanically or chemically to expose the solidified metal casting.
Post-Casting Processing
Apply heat treatment, machining, finishing, and inspection to meet dimensional and performance specifications required.
Main Investment Casting Types
We provide two main investment casting types tailored to application, material, and cost requirements.
- Silica sol binder gives tight tolerance and smooth surfaces.
- Ideal for aerospace, medical, and precision industrial applications.
- Produces complex shapes, thin walls, and reduces post-processing.
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- Water glass binder fits large, simple parts needing moderate precision.
- Common in automotive, agricultural, and machinery industries.
- Supports mass production of iron and low-alloy steel parts.
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Available Materials
To satisfy your unique performance, corrosion resistance, and mechanical property needs, we provide a wide range of materials:
Stainless Steel
Includes 304, 316, 17-4PH, CF8, CF8M, 4A, 1.4462, 1.4308, 1.4470, ANC 21 grades for corrosion resistance.
Carbon Steel
Covers WCB, LF2, LCC, A4, 20Mn5, 1.6220, 1045, and 45#, ideal for structural and mechanical component applications.
Alloy Steel
Grades like 4130, 4140, 4340, 8620, 8627, 8630, 20CrMo5 offer excellent strength, toughness, and wear resistance properties.
Nickel-Based Alloys
Provide outstanding corrosion resistance and high-temperature performance, suitable for aerospace, chemical, and marine engineering applications.
Cobalt-Based Alloys
Known for excellent heat resistance, wear resistance, and corrosion resistance, commonly used in medical, turbine, and valve components.
Aluminum Alloys
Lightweight with good corrosion resistance and machinability, aluminum alloys are ideal for aerospace, automotive, and precision parts casting.
Titanium Alloys
Deliver an excellent strength-to-weight ratio, resist corrosion effectively, and are biocompatible, making them widely applied in aerospace, marine, and medical fields.
Bronze
High strength, corrosion resistance, and excellent machinability make bronze suitable for bearings, bushings, and decorative components.
Copper Alloys
Excellent electrical conductivity, thermal properties, and corrosion resistance make copper alloys ideal for electrical and plumbing cast parts.
Dimensions in Investment Casting
In investment casting, we guarantee exact dimensions, offering precise and reliable control for parts in a range of industries.
| Parameter | Specification |
| Max Casting Size | Up to 1200 mm (L) × 800 mm (W) × 600 mm (H) |
| Min Casting Size | 5 mm × 5 mm × 5 mm |
| Wall Thickness | 0.5 mm – 10 mm |
| Tolerance Levels | ±0.05 mm – ±0.5 mm |
| Hole Diameter | 0.5 mm – 50 mm |
| Surface Roughness (Ra) | 0.8 – 3.2 µm |
| Aspect Ratio | Up to 10:1 |
Tolerance for Investment Casting Services
We provide precise investment casting services with strict quality standards, ensuring accurate tolerances for your specific application needs.
| Tolerance Parameter | Typical Range |
| Dimensional Tolerance | ±0.1 mm to ±2.0 mm |
| Wall Thickness Tolerance | ±0.3 mm to ±1.5 mm |
| Geometric Tolerance | ±0.1 mm to ±1.5 mm |
| Surface Finish (Ra) | Ra 0.8 to Ra 6.3 |
| Casting Defects (Porosity) | ≤ 1.5% of total volume |
| Roundness (Circularity) | ≤ 0.05 mm to ≤ 0.5 mm |
| Flatness | ±0.2 mm to ±1.0 mm |
| Parallelism | ±0.1 mm to ±0.5 mm |
| Angle Tolerance | ±0.5° to ±3.0° |
| Hole Positioning Tolerance | ±0.1 mm to ±0.5 mm |
| Casting Shrinkage | 0.3% to 2.0% |
| Metal Flow Control | ±0.5 mm to ±2.0 mm |
| Radii and Fillets | ±0.1 mm to ±0.3 mm |
| Core Shifting | ≤ 0.3 mm |
| Internal Surface Finish (Ra) | Ra 1.6 to Ra 3.2 |
| Corner Radius | ±0.2 mm to ±1.0 mm |
| Thickness Variability | ±0.5 mm to ±1.5 mm |
| Casting Alignment Tolerance | ±0.2 mm to ±1.0 mm |
| Length and Width Tolerance | ±0.1 mm to ±2.0 mm |
Post-Casting Processing
Enhances casting performance through heat treatment, surface finishing, machining, NDT, welding, and assembly for functional, high-precision applications.
Heat Treatment
Performed in furnaces like annealing, quenching, tempering, and solution to enhance structure, hardness, and mechanical performance of castings.
Surface Finishing
Includes shot/sand blasting, pickling, passivation, and alkali cleaning to remove oxide scales and improve stainless steel casting surfaces.
Machining
Utilizes CNC lathes, milling, and drilling to achieve required precision, tolerance, and surface finish for functional casting applications.
NDT Testing
Dye penetrant, ultrasonic, and X-ray testing detect internal or surface defects without damaging the casting’s structural integrity or appearance.
Welding
TIG welding is applied to repair minor casting defects within standards, ensuring reliable strength, surface integrity, and dimensional accuracy.
Assembly & Fitting
Components are fitted or assembled into complete units, ensuring compatibility, function, and readiness for final application or customer delivery.
Inspection Techniques
We implement rigorous inspection techniques to ensure casting accuracy, structural integrity, and compliance with material and performance standards.
Dimension Inspection
Utilize calipers, micrometers, height gauges, CMMs, and optical projectors to ensure castings meet precise dimensional specifications and tolerances.
Appearance Inspection
Use magnifying glasses, endoscopes, fluorescent penetration lines, and magnetic particle flaw detectors to check surface finish and visible or subsurface defects.
Internal Quality Inspection
Apply X-ray real-time imaging systems and industrial CT to detect internal voids, inclusions, cracks, and other structural inconsistencies in castings.
Mechanical Properties Testing
Conduct tensile, bending, hardness, and impact tests using universal testing machines, Brinell, Rockwell, Vickers hardness testers, and impact testers.
Chemical Composition Analysis
Analyze material composition with OES, XRF spectrometers, and carbon-sulfur analyzers to verify alloy content meets customer and industry standards.
Metallographic Analysis
Inspect grain structure, phases, and micro-defects using metallographic microscopes to assess casting quality and heat treatment effectiveness.
Our Investment Casting Parts
Applications
Our investment casting supports complex, high-performance parts across industries, offering precision, strength, and versatility in diverse critical applications.
Aerospace
Used for turbine blades, brackets, engine components, and housings requiring tight tolerances and high-performance materials in aerospace systems.
Automotive
Ideal for turbocharger wheels, gearbox parts, suspension brackets, and manifold components requiring strength, precision, and durability.
Medical
Applied in producing surgical instruments, orthopedic implants, dental brackets, and prosthetic joint components with excellent surface finish.
Energy & Power Generation
Used for turbine vanes, impellers, valve bodies, and fuel nozzles in power plants and renewable energy equipment.
Military & Defense
Precision-cast gun mounts, missile housings, optical mounts, and armored vehicle brackets for mission-critical defense equipment.
Oil & Gas
Applied in valve bodies, pump housings, drilling tool parts, and downhole equipment exposed to corrosive environments.
Industrial Machinery & Robotics
Used for robotic arms, grippers, pump components, linkage brackets, and machine tool parts with complex geometries.
Marine & Shipbuilding
Cast propeller blades, pump housings, rudder components, and valve bodies for corrosion-resistant marine applications.
Food & Pharmaceutical Equipment
Ideal for hygienic-grade valves, impellers, pump bodies, and spray nozzles requiring smooth surfaces and corrosion resistance.
Electronics & Optoelectronics
Used in sensor housings, heat sinks, microdevice enclosures, and precision mounting brackets for electronic and optical assemblies.
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FAQs
Can you produce prototypes?
Yes, prototypes can be produced using soft tooling or 3D-printed wax patterns, offering fast validation before full-scale production with hardened molds.
What are the typical tolerances?
Dimensional tolerances range from ±0.1 mm to ±2.0 mm, depending on part geometry, size, and material properties required by customer specifications and applications.
Can surface coatings be applied?
Yes, we offer coatings such as anodizing, galvanizing, painting, plating, and passivation for corrosion protection, appearance, or specific application performance.
Can you meet international standards?
Yes, we manufacture according to standards like ASTM, DIN, ISO, EN, and JIS depending on customer specifications and application requirements for each industry.
Do you provide material certificates?
Yes, material test certificates (MTC), chemical composition reports, and mechanical property reports are available upon request to ensure full traceability and compliance.
Do you offer assembly or fitting?
Yes, our factory provides value-added services including part assembly, welding, and mechanical fitting to deliver ready-to-use components or subassemblies to clients.