Investment Casting Service & Factory Serving the Vietnam Market

1. Material Integrity & Chemical Composition

To prevent failures in industrial valves, pumps, and engine brackets, our lab tests raw material batches using optical emission spectrometers (OES). We verify carbon, chromium, nickel, molybdenum, and sulfur contents to guarantee compliance with international standards (such as ASTM, DIN, EN, and JIS).

2. The Lost Wax (Investment Casting) Process

Using soluble or tooling-grade waxes, we construct highly detailed patterns that are coated in alumina-silica refractory slurries to form rigid ceramic shells. Once the wax is melted out, the hollow shell is heated to over 1000°C to prepare it for receiving molten alloys. This prevents thermal shock and allows for intricate details and thin-wall structures down to 1.5mm.

3. Multi-Axis CNC Post-Machining

While investment casting delivers near-net shapes, high-precision fits require secondary machining. Our 3-axis, 4-axis, and 5-axis CNC machining centers finish critical paths, seal faces, and threads, achieving tight tolerances up to ±0.005mm.

4. Surface Operations & Heat Treatment

To enhance corrosion resistance and wear profiles, we provide shot blasting, chemical passivation, electropolishing, powder coating, and thermal normalizing/annealing. This adjusts mechanical properties like tensile strength and elongation to match specific requirements.

Trade Integration & Tariff Benefits (EVFTA & CPTPP)

With the implementation of the EU-Vietnam Free Trade Agreement (EVFTA) and the CPTPP, Vietnam-based OEMs can export finished products to Europe, the Americas, and APAC markets with low or zero tariffs. However, to leverage these trade benefits, sub-components must meet strict origin regulations and structural quality standards.

Dongguan SX Technology provides the documentation, structural audits, and chemical certifications required for global customs compliance. This ensures your final product complies with regulatory frameworks worldwide.

Rapid Supply Chains to Vietnam Economic Zones

Our proximity to major logistics ports in Shenzhen and Guangzhou enables quick transit to Vietnam. Lead times are reduced, allowing you to streamline inventory schedules.

• North Vietnam (Hai Phong/Hanoi): Delivery by sea via Haiphong Port, or overland through Guangxi border gates within 5-7 days.
• South Vietnam (HCMC/Binh Duong): Fast shipping lines directly to Cat Lai Port within 6-8 days.