Seven fully controlled silica sol casting steps, industry-leading tolerances, complete NDT capabilities and strict quality systems — we manufacture excellent products with a goal of 100% conformity.
| Step | Key Controls | Quality Assurance |
|---|---|---|
| 1. Wax Injection | Wax temperature, injection pressure, holding time, die temperature | No cold shuts, sink marks or bubbles; 22±2℃ constant-temperature workshop |
| 2. Tree Assembly | Weld integrity, gating layout, spacing & orientation | No cracked or weak joints; proper wax drain & venting |
| 3. Shell Building | Slurry viscosity, first-coat stucco fineness, layer count & drying | Fine first coat replicates pattern surface; adequate shell strength |
| 4. Dewax | Steam dewax temperature & pressure | Clean cavity, no residual wax |
| 5. Melting & Pouring | Furnace & pouring temperature, pour rate | Spectral re-check of chemistry before pouring |
| 6. Cut-Off & Cleaning | Cut-off, grinding, shot blasting | Consistent surface, no gate-removal defects |
| 7. Machining & Inspection | CNC machining, full dimensional & NDT inspection | 100% inspected to spec before shipment |
| Item | Capability | Notes |
|---|---|---|
| Linear casting tolerance | ±0.10mm | Silica sol process (industry standard: ±0.005" per inch of length) |
| Surface finish | Ra 6.3 | Fine first-coat shell replicates pattern surface |
| Weight range | 3g – 130kg | From small precision parts to large structural castings |
| Machining accuracy | ±0.015mm | 4-axis & horizontal machining centers |
| Finish tolerances | ±0.001" | Achievable on final machined parts |
| Geometric tolerances | Per drawing | Effective part configuration is critical — our engineers review every part |
Full NDT performed per client requirements; professional QA team plus high-standard inspection equipment.
"Manufacture excellent products and deliver 100% conforming products to customers." From first-article inspection to full dimensional outgoing checks — every control point is standardized, recorded and traceable.
Send us your drawing requirements — our engineering team will review every item and propose a workable process solution.
Talk to Our Engineers