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Investment casting machinery components
Keywords:
Investment casting machinery components
- Details
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Investment casting, also known as lost-wax casting, is an ancient yet advanced metal forming process centered around a precision wax pattern. This process involves: creating a meltable wax pattern using CNC machining or 3D printing → coating the wax pattern with multiple layers of silica sol and zircon sand to form a ceramic shell → vaporizing the wax to create a mold cavity → pouring molten alloy (such as stainless steel, titanium alloy, or superalloy) → breaking the shell to remove the finished part.
■ Main Features
Excellent mold accuracy: The ceramic shell achieves ultra-high precision, with mold cavity replication errors less than 0.05 mm, capable of forming highly complex hollow structures, curved surfaces, and fine textures (minimum aperture of 0.3 mm).
■ Core Advantages
Ultra-precise tolerances: Achieves ±0.1mm dimensional tolerances and a mirror-like surface finish (Ra 1.6-6.3μm), reducing machining allowance by up to 90%.
Wide material compatibility: Supports a variety of materials, from carbon steel and aluminum alloys to nickel-based superalloys, with casting temperatures exceeding 1600℃.
Flexible production volume: Economical for both single-piece and mass production of thousands of pieces, making it ideal for customized high-end components.
Seamless design integrity: The integral ceramic shell eliminates parting lines, prevents misalignment, and enhances structural integrity.
Investment casting possesses the core capabilities of "limitless precision and strong material versatility," making it an indispensable solution for high-end complex metal parts. It is widely used in aerospace, medical devices, jewelry, energy, and defense industries. Especially against the backdrop of new material innovation and miniaturization trends, investment casting will continue to lead the precision manufacturing industry into the future.■ Applicable Materials
304 stainless steel, 316L stainless steel, 2202 stainless steel, 2507 stainless steel, 904L stainless steel, 2205 stainless steel, 1Cr18Ni9Ti, CD4mcu
Investment Casting Parts – Stainless Steel & Alloy Steel Castings
Zibo Geluobao Precision Casting Co., Ltd. is a specialized investment casting foundry based in Shandong, China, delivering high-quality stainless steel investment casting parts to global OEM buyers since our establishment. With ISO 9001 certification and a 5-ton melting furnace capable of producing castings up to 3 tons per single piece, we serve pump manufacturers, valve companies, and industrial equipment suppliers across North America, Europe, and Asia-Pacific.
What Is Investment Casting?
Investment casting — also known as lost-wax casting or precision casting — is a manufacturing process that produces near-net-shape metal components with exceptional dimensional accuracy and surface finish. A wax pattern is coated with multiple layers of ceramic shell slurry, the wax is melted out, and molten steel is poured into the resulting cavity. This process delivers:
- CT4–CT6 dimensional tolerance — minimal machining required
- Ra 3.2–6.3 μm surface finish — ready for assembly or light finishing
- Complex geometries — internal passages, thin walls, undercuts all achievable in one piece
- Wide material range — stainless steels, duplex alloys, heat-resistant grades, nickel-based alloys
Materials We Cast
| Material Category | Grades Available | Typical Applications |
|---|---|---|
| Austenitic Stainless Steel | 304 / CF8, 316L / CF8M, CF3, CF3M | General industrial, chemical pumps, marine hardware |
| Duplex Stainless Steel | 2205 / UNS S32205, 2507 (Super Duplex) | Chemical process, seawater, desalination, offshore |
| Precipitation Hardening | 17-4PH / CB7Cu-1 | Pump shafts, valve stems, aerospace components |
| Martensitic Stainless Steel | CA6NM, CA15, CA40 | Turbine runners, wear components, impellers |
| Heat Resistant Alloys | HK, HP, HH series | Furnace parts, radiant tubes, thermal fixtures |
| Wear Resistant Alloys | High Chrome White Iron, Martensitic grades | Mining pumps, dredging, slurry handling |
| Nickel-Based Alloys | Hastelloy, Inconel, Monel equivalents | Extreme corrosion / high-temp service |
Product Range: Investment Casting Parts
We manufacture a comprehensive range of precision investment casting parts, primarily serving the pump and valve industries:
Pump Parts
- Pump Bodies & Casings – Centrifugal pump bodies, volutes, diffusers, split casings, end-suction housings
- Pump Impellers – Closed, semi-open, open impellers; centrifugal, slurry, oil pump impellers
- Internal Components – Wear rings, balancing rings, suction liners, mechanical seal glands, bearing housings
- Pump Types Covered – Chemical pumps, vacuum pumps, multistage pumps, mixed flow pumps, double suction pumps, submersible pumps, filter pumps, slurry pumps, oil pumps
Valve Parts
- Valve Bodies – Gate, globe, ball, butterfly, check, sanitary valve bodies
- Valve Internals – Discs/wedges, bonnets, yoke assemblies, stems
Industrial Components
- Roots blower rotors & housings • Pipe fittings & flanges • Marine hardware • Impeller wear plates
Two Casting Processes, One Foundry
1. Silica Sol Investment Casting (Ceramic Shell)
Best for smaller-to-medium precision parts requiring tight tolerances and excellent surface finish. Multi-layer ceramic shell process with silica sol binder. Ideal for pump impellers, valve bodies, and complex internal passages.
2. Lost Foam Casting (Full Mold / EPC)
Our differentiator. No pattern tooling required — foam patterns are cut directly from CAD data. Perfect for large pump casings, volutes, prototypes, and small-batch production where tooling cost would otherwise be prohibitive. First article in 2–4 weeks.
Why Choose Us for Your Investment Casting Parts?
| Capability | Specification | Your Benefit |
|---|---|---|
| Melting Capacity | 5-ton electric furnace | Large single-piece castings up to 3 tons |
| Min Order Qty | No minimum (lost foam) / Small batches welcome | Economical prototypes, replacement parts, niche products |
| Tooling | No mold required (lost foam) | $0 tooling cost, faster lead time, design freedom |
| First Article Lead Time | 2–4 weeks from drawing | Faster than traditional pattern-based foundries |
| Quality System | ISO 9001 certified | Consistent quality, full traceability per EN 10204 3.1 |
| Testing | Chemical analysis, tensile test, NDT (UT/MT/PT) | Material certificates with every shipment |
| Export Experience | Serving global markets (NA, EU, APAC) | Export packaging, sea/air freight coordination |
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Investment casting machinery components
This process involves: fabricating a meltable wax model using a CNC machine or 3D printing → coating the wax model with multiple layers of silicon sol and zircon sand to form a ceramic shell → steam dewaxing to form a cavity → casting molten alloys (such as stainless steel, titanium alloy or superalloys) → breaking the shell to remove the finished part.
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Ceramic shell Lost foam casting suction pump casing
Lost foam casting is an advanced casting technology that uses a foam pattern as the main mold. Its core principle is to replace the traditional mold with a foam pattern; during pouring, the high-temperature molten metal vaporizes the foam and fills the cavity.
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Sand casting is one of the most traditional metal forming processes, using quartz sand or special sand combined with clay or resin binders to make molds. Metal parts can be produced by gravity or pressure casting.
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Resin sand casting
Resin sand casting: Uses resin as a binder, mixed with sand to form a mold. Resin sand casting has low mold costs and is suitable for large and complex castings, generally used for machine tools, lathes, large machinery bases, etc.
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