Rapid Vacuum Casting Prototyping Services

Vacuum Casting Prototype Production Technology and Process

1. Technical Principles and Core Advantages

--Vacuum Die Casting: The mold is preheated to 300°C and then evacuated to a near-space environment. Molten metal is injected at a high speed of 3 m/s. Pressurized and crystallized, high-density castings are formed. Ultra-thin parts as thin as 1.5 mm can be produced.

--V-Method Casting: The sand box is sealed with plastic film and vacuumed (with a pressure differential of 300-400 mmHg) to compact the dry sand. The casting surface finish reaches Ra 1.6 μm, and the used sand reuse rate is 95%.

2. Typical Process Flow

--Mold Preparation: Silicone or metal mold fabrication (vacuum casting requires preheating to 300°C)

--Vacuum Treatment: Vacuum to eliminate bubbles (V-method casting requires maintaining vacuum until the casting solidifies)

--Material Injection: High-speed injection of molten metal (die casting) or vacuum resin casting (PUR material)

--Post-Processing: Demolding, cleaning, and polishing (plaster casting requires blasting to remove the mold)

3. Material and Equipment Selection

--Metallic Materials: Aluminum Alloy (for aviation rivets), Copper Alloy (for precision parts)

--Non-Metallic Materials: Two-Component Polyurethane (PUR), adjustable hardness (from ABS to TPE)

--Key Equipment: Vacuum Chamber (1,800-3,000 RMB), Medium-Frequency Electric Furnace (12.5-ton capacity)

4. Industry Applications

--Automotive: Air filter housings, lampshades, etc., with lower unit costs than injection molds

--Consumer Electronics: Mobile phone housings, keyboards, etc., small batches (less than 50 pieces), with a production cycle of 1-4 days

--Cost Comparison: Vacuum casting molds have lower costs, but the unit cost is higher than sand casting.

Rapid Prototyping Parts

Rapid Prototyping Process:

Experience an efficient journey from design to prototype with our simplified process, and obtain high-quality parts quickly and precisely;

Our Rapid Prototyping Technology

Our rapid prototyping integrates advanced manufacturing technologies to turn designs into high-quality prototypes quickly and efficiently. By leveraging cutting-edge equipment and diverse processes, we ensure precision, material versatility, and fast turnaround times.

Key technologies we use:

--CNC Machining – High-precision milling and turning for metal and plastic prototypes.

--3D Printing – SLA, SLS, MJF, and SLM for fast, detailed parts.

--Vacuum Casting – Ideal for small-batch plastic prototypes with injection-molded quality.

--Sheet Metal Fabrication – Quick production of metal enclosures and structural parts.

--Our facilities feature industrial 3D printers, multi-axis CNC machines, and advanced molding systems, ensuring exceptional accuracy and repeatability.

Choose Our Rapid Prototyping Services

1. Technology Type and Applications

--SLA (Stereolithography)

Suitable for high-precision, high-surface-finish prototypes, such as medical models or complex structural parts, with an accuracy of ±0.05mm.

--SLS (Selective Laser Sintering)

Suitable for functional prototypes and small-batch production. Made of nylon or metal powder, it offers mechanical strength similar to injection molding.

--FDM (Fused Deposition Modeling)

Low-cost, suitable for rapid design concept verification, but with lower accuracy and strength (±0.5mm).

2. Key Considerations

--Precision Requirement: SLA and SLS are suitable for micron-level precision, while FDM is suitable for lower-precision requirements.

--Material Properties: SLS's nylon material is suitable for mechanical testing, while SLA resin is suitable for visual verification.

--Cost and Speed: FDM offers the lowest cost, while SLA and SLS are suitable for high-value prototypes.