Investment casting, traditionally known as the lost-wax process, remains the premier manufacturing method for producing near-net-shape metal parts with intricate geometries, exceptional surface finishes, and tight dimensional tolerances. For modern industries ranging from deep-sea exploration to medical electronics, the demand for high-integrity components requires an advanced approach combining traditional casting fundamentals with sophisticated CNC finishing.
Dongguan SX Technology Co.,Ltd has stood at the forefront of this industrial transition since 2014, engineering complex components that meet rigorous mechanical stresses. Our structural capabilities allow us to bridge the gap between initial metallurgical pouring and nanometer-scale CNC machining tolerances, ensuring that every batch exhibits zero volumetric defects and complies fully with ASTM, EN, and ISO standards.
Dongguan SX Technology Co.,Ltd (also known as Shixin) brings together a robust infrastructure specializing in precision investment casting, high-tolerance CNC machining, and comprehensive system assemblies. Our integrated factory floor is configured to manage production workflows seamlessly, mitigating lead-time risks and reducing administrative layers for global procurement managers.
Our strategic material expertise encompasses standard and premium grades of stainless steel and carbon steel for investment casting. For post-cast machining and standalone component engineering, we process titanium alloys, stainless steels, carbon steels, aluminum alloys, copper alloys, and cemented carbides. By operating a hybrid casting-machining model, we guarantee control over the entire supply chain from raw casting ingot melt to finished structural components.
Serving critical industrial domains including automotive, marine propulsion, deep-sea exploration, medical devices, chemical valves, electronics packaging, and precision watch components.
Our dedicated QC department employs state-of-the-art metrology instruments to maintain strict compliance with global dimensional and structural tolerances.
Global procurers frequently suffer from structural component failures due to internal porosity and chem-composition deviations. Shixin guarantees complete lot traceability through Spectrochemical Analysis, verifying exact elemental distribution for marine, offshore, and medical applications.
Achieving standard linear casting tolerances (e.g., ISO 8062-3 DCTG 6) is only half the battle. Our hybrid setup allows us to cast to near-net shapes and then finish-machine critical mating surfaces to tolerances within ±0.005 mm on multi-axis CNC units.
Optimizing tooling drafts, fillet radii, and wall thickness gradients before the wax injection phase saves thousands of dollars in mold modifications. Shixin engineers provide proactive DFM feedback for cost reduction and yield maximization.
Quality is the cornerstone of the manufacturing industry. We firmly believe that only by controlling quality well can we survive, develop, and get better and better. Therefore, we have been working in this industry unremittingly since 2014 and continue to improve the company's team and improve the company's production capacity.
To achieve zero assembly defects, Shixin maintains a high-tech inspection facility. We execute multi-stage inspections encompassing initial casting chemical verification, intermediate dimensional scanning during CNC machining, and final dimensional certification using Coordinate Measuring Machines (CMM). Non-Destructive Testing (NDT) such as dye penetrant inspection and magnetic particle testing are systematically applied based on critical service specifications.
| Material Type | Standard Grades | Optimal Process |
|---|---|---|
| Stainless Steel | SUS 304, 316, 316L, 17-4 PH | Silica Sol Casting + CNC |
| Carbon Steel | WCB, LCC, Grade 1020/1045 | Water Glass / Silica Sol |
| Titanium Alloy | Ti-6Al-4V (Grade 5), Grade 2 | CNC Precision Machining |
| Aluminum Alloy | Al 6061-T6, 7075-T6, ADC12 | High-Precision CNC Machining |
| Copper & Carbide | C3600 Brass, Bronze, Cemented Carbides | Custom Machining / Assembly |
* Custom metallurgical configurations can be accommodated upon request. Full material test reports (MTR) according to EN 10204 3.1 are supplied with each delivery.
Operating dynamically within international logistics channels requires rigid compliance structures. Shixin maintains compliant operations under major regulatory guidelines, including REACH, RoHS, and conflict-free mineral tracing.
By supporting custom packaging protocols, DDP delivery options, and localized customer support lines across multiple time zones, our clients experience localized service speed while leveraging direct-from-factory cost efficiencies.
The future of precision investment casting lies in rapid prototyping and digital simulations. Over the next three years, Shixin is expanding its integration of 3D wax pattern printing (SLA) to minimize initial tooling lead times from weeks to days.
Furthermore, we are implementing ProCAST simulation modeling to optimize gating geometries, ensuring zero defects during initial trials and paving the way for sustainable casting practices.
For raw castings, we consistently comply with ISO 8062-3 linear tolerances (typically DCTG 5 to DCTG 7). For features demanding tighter precision, our secondary CNC machining department refines dimensions down to ±0.005 mm, combining casting efficiency with mechanical precision.
We control porosity at three stages: 1) Computer-aided flow simulation of the molten metal; 2) Dewaxing processes under high temperature and steam pressure to prevent shell inclusions; 3) Post-cast NDT inspections, including Dye Penetrant Inspection (DPI) and X-ray testing (upon request) to verify internal integrity.
Silica sol casting is our preferred process for stainless steel and complex parts, offering superior surface finishes (Ra 3.2 to 6.3 μm) and high dimensional repeatability. Water glass casting is widely used for larger carbon steel components, offering a cost-effective alternative with slightly lower dimensional resolution (Ra 12.5 μm).
Yes. By employing CNC machining, modular mold architectures, and rapid 3D printed wax models, we accommodate low-volume trial batches and custom prototypes without requiring significant capital layouts for permanent hard tooling.
We provide material test certificates (MTC) conforming to EN 10204 3.1, detailing exact chemical heat analyses and mechanical performance tests (tensile strength, yield strength, elongation, and hardness) for every production batch.
SX Machining