Shandong Shunye Stainless Steel Co., Ltd. is one of the most reliable manufacturers and suppliers of lost wax investment casting in China. We are specialized in providing high quality customized products with competitive price. Welcome to buy bulk cheap lost wax investment casting made in Chin here from our factory. Contact us for quotation.

Specifications

Project	Content
Process	Lost Wax Investment Casting (Silica Sol Process) + CNC Machining
Material	Carbon Steel / Alloy Steel / Stainless Steel / Heat Resistant Steel / Tool Steel
Surface Finish	As Cast / Sandblasting / Shot Blasting / Pickling & Passivation / Painting / Galvanized / Electropolishing
Weight Range	0.05kg - 50kg
Tolerance	CT4-CT6 for raw profile, IT6-IT9 for machined surfaces
Minimum Wall Thickness	1.5mm (design dependent)
MOQ	100 pcs
OEM Service	Available (Custom Drawings, Material Grades & Surface Treatments)
Certification	IATF 16949 / / / Material Test Report Tracking Supplied

The Lost Wax Investment Casting Process

1. Wax Pattern Injection: Molten wax is injected into precision aluminum dies to create exact replicas of the final part.

2. Pattern Assembly: Multiple wax patterns are assembled onto a central sprue to form a casting tree.

3. Shell Building: The assembly is repeatedly dip in ceramic slurry and coated with refractory sand, building a durable shell over 6-8 layers.

4. Dewaxing: The shell is heated in an autoclave to melt and remove the wax, leaving a hollow ceramic mold.

5. Pouring: Molten metal is poured into the preheated ceramic mold under gravity or vacuum conditions.

6. Shell Removal & Finishing: After solidification, the ceramic shell is removed by vibration and blasting, and parts are cut from the sprue, ground and machined to final specifications.

Why Choose Lost Wax Investment Casting?

Exceptional Dimensional Accuracy: Lost wax casting achieves CT4-CT6 tolerances, the highest precision among all casting methods, minimizing secondary machining operations and reducing production costs.

Superior Surface Finish: The smooth ceramic mold produces surfaces with Ra 3.2-6.3 μm finish, often eliminating the need for additional polishing or grinding.

Unlimited Design Complexity: The process can produce parts with intricate internal passages, thin walls, undercuts and complex external geometries that are impossible with other casting methods.

Wide Material Compatibility: Virtually any castable metal can be used, from carbon and alloy steels to stainless steels, superalloys, tool steels and precious metals.

Excellent Material Utilization: Near-net-shape casting reduces material waste to 5-15%, compared to 50-70% for CNC machining from solid billets.

Consistent Repeatability: Once the wax dies are produced, every casting is virtually identical, ensuring consistent quality across high-volume production runs.

Applications

Aerospace & Defense: Turbine blades, vanes, structural components, landing gear parts and weapon components requiring high precision and material integrity.

Automotive & Transportation: Turbocharger wheels, impellers, brackets, housings, levers and suspension components for passenger and commercial vehicles.

Energy & Power Generation: Gas turbine components, steam turbine parts, wind turbine hardware and nuclear power plant components.

Oil & Gas: Wellhead components, valves, pumps, drilling tools and subsea equipment requiring high strength and corrosion resistance.

Medical & Dental: Surgical instruments, orthoic implants, dental crowns and bridges requiring biocompatibility and precision.

Industrial Machinery: Pump impellers, valve bodies, gears, bearing housings and various mechanical components for general industrial applications.

Jewelry & Art: Fine jewelry, sculptures and artistic castings in precious metals and alloys.

Quality Control & Testing

Wax Pattern Inspection: Dimensional verification of wax patterns to ensure die accuracy before shell building.

Shell Quality Control: Visual inspection of shell thickness, integrity and drying conditions at each coating stage.

Raw Material Inspection: Spectrometer analysis for every heat of metal, verifying chemical composition against specified grades.

Process Monitoring: Continuous monitoring of pouring temperature, mold temperature, cooling rates and solidification time.

Dimensional Inspection: CMM inspection for critical dimensions, with full dimensional reports available upon request.

Non-Destructive Testing: Visual inspection, penetrant testing (PT), magnetic particle testing (MT), radiographic testing (RT) and ultrasonic testing (UT) available per customer specifications.

Mechanical Testing: Tensile testing, hardness testing, impact testing and microstructure examination with test certificates supplied with each batch.

Comparison: Lost Wax Investment Casting vs. Alternative Processes

Process	Dimensional Tolerance	Surface Finish	Complex Geometry	Tooling Cost	Best For
Lost Wax Investment Casting	CT4-CT6	Ra 3.2-6.3 μm	Excellent	Medium-High	Complex, high-precision parts
Sand Casting	CT8-CT12	Ra 12.5-25 μm	Good	Low	Large, simple parts
Die Casting	CT6-CT8	Ra 1.6-6.3 μm	Good	High	High-volume zinc/aluminum parts
CNC Machining	IT4-IT7	Ra 0.4-3.2 μm	Limited	Low	Simple geometry, low volume
Forging	CT8-CT10	Ra 6.3-12.5 μm	Limited	High	High-strength, simple parts

Lost wax investment casting is the preferred process for components requiring exceptional dimensional accuracy, superior surface finish and complex geometries in medium-to-high production volumes across a wide range of metals and alloys.

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