China Medical Casting Parts Manufacturer & Precision Products

For initial functional validation, Sunmy offers a 3D-printed wax/photopolymer pathway that yields finished cast prototypes in 10 to 14 calendar days without hard tooling. For serial production, dedicated aluminum injection wax tooling typically requires 3 to 4 weeks, followed by sample shell dipping, pouring, CMM inspection, and a comprehensive First Article Inspection (FAI) report within 25 to 30 days total.

Porosity prevention starts at the mold design stage using MagmaSoft simulation to optimize gating systems, thermal chill locations, and risers. Pouring is conducted in vacuum induction furnaces or inert argon blankets. For components subjected to dynamic fatigue or high pressure (e.g., hydraulic surgical actuators or orthopedic frames), we mandate Hot Isostatic Pressing (HIP) at 100 MPa to eliminate internal micro-voids, verified via ASTM E192 X-ray radiography.

Yes. As a full-service manufacturing facility founded in 2016 in Shenzhen, Sunmy operates 3-, 4-, and 5-axis CNC machining centers in-house. While as-cast tolerances typically achieve ISO 8062-3 DCTG 4–6, our secondary post-machining routinely holds critical bores, bearing seats, and sealing faces down to ±0.005 mm with surface roughness down to Ra 0.4 μm.

Every shipment arrives with full DHR (Device History Record) compliant documentation, including raw material 3.1 chemical spectrometry and mechanical tensile certs, heat treatment charts, FAI reports with full dimensional balloon drawings, CMM surface profile scans, salt spray test verifications, and RoHS/REACH compliance declarations.

Sunmy enters into binding, bilateral Non-Disclosure Agreements (NDAs) governed by international business law before collecting any digital assets. Furthermore, your engineering team interfaces directly with our technical leadership—drawings and 3D models are encrypted and stored in secure internal servers and are never disseminated across third-party brokering networks.