Manufacturing capability
Investment Casting
Investment casting is a precision metal casting process used to manufacture complex components through expendable wax patterns and ceramic molds. It is particularly suitable for intricate shapes, internal passages, and near-net-shape metal parts that would be difficult or costly to manufacture entirely through conventional machining.
Related process: Casting
Manufacturing overview
Investment casting, also known as lost-wax casting, begins with a wax pattern representing the desired component geometry. The pattern is coated with ceramic material to form a mold, after which the wax is removed and molten metal is poured into the cavity.
The process can produce detailed geometries while reducing machining requirements for certain component designs.
Typical applications include:
- Industrial valve and pump components.
- Aerospace and mechanical hardware.
- Precision brackets and complex fittings.
- Turbine-related components.
- Food-processing and chemical equipment parts.
Common materials include stainless steel, carbon steel, alloy steel, and selected nickel- or cobalt-based alloys. Material availability depends on the casting process and component requirements.
Investment casting is useful for components with complex contours, curved surfaces, and features that are difficult to access with conventional cutting tools.
Compared with die casting, investment casting supports a wider range of high-melting-point alloys and does not require the same type of permanent metal die. However, it involves different tooling, cycle-time, and production economics.
Dimensional tolerances depend on casting size, alloy, geometry, and applicable casting standards. Critical bores, sealing faces, and precision mounting features may require secondary machining.
Design considerations include wall thickness transitions, solidification behavior, shrinkage allowance, gating, surface finish, and inspection accessibility.
Buyers should provide a 3D CAD model, detailed drawing, material grade, casting standard, quantity, critical dimensions, and required machining allowances.
Quality requirements may include dimensional inspection, chemical composition verification, mechanical testing, liquid penetrant testing, radiographic inspection, and material traceability when applicable.
Metraxio enables buyers to prepare investment casting RFQs that clearly distinguish casting requirements from secondary machining, inspection, and final acceptance criteria.