Browse our state-of-the-art lost wax cast and high-precision CNC machined metal components designed for complex assemblies and heavy-duty structural applications.
Dongguan SX Technology Co.,Ltd is a premier manufacturer specializing in advanced precision casting, CNC machining, and comprehensive structural assemblies. Since our establishment in 2014, we have served as an invaluable manufacturing partner to global industrial brands, converting complex product geometries into highly resilient, operational components.
Our multidisciplinary capabilities cover a broad industrial spectrum, providing essential cast and machined parts for sectors including heavy machinery, automotive assemblies, marine and maritime installations, fluid control valves, pump bodies, consumer electronics, packaging mechanisms, horology, architecture, and high-performance chemical plants.
Our core production leverages two main manufacturing pathways:
Equipped with state-of-the-art foundry equipment, CNC turning centers, and multi-axis mill-turn machines, we deliver immediate responses to customer needs from design-stage prototypes to high-volume manufacturing runs.
Lost wax investment casting, or investment casting, is a highly engineered metal forming method designed to produce near-net-shape parts with complex geometries. Here we analyze the core metallurgical stages that define its structural reliability.
We use the high-performance silica sol binder process for our ceramic molds rather than the lower-grade water glass system. This choice prevents mold erosion, reduces surface defects, and guarantees a surface roughness value down to Ra 3.2 to Ra 6.3 microns directly out of the kiln.
Proper heating and cooling are critical to preventing internal shrinkage, gas pockets, and hot tears. By maintaining strict thermal profiles of the pre-heated ceramic shells, we achieve isotropic mechanical properties and uniform grain configurations across varying wall thicknesses.
We work with an extensive catalog of alloys, including austenitic and martensitic stainless steels (304, 316, 316L, 17-4 PH) and low-alloy carbon steels. Every pour is verified via optical emission spectrometers to guarantee it meets precise mechanical performance specifications.
Step inside our facilities. Our integration of investment casting foundries and CNC precision finishing mills under a single operational umbrella ensures smooth transitions from cast blanks to finished, print-compliant parts.
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, continuing to improve our team's skills and expand our production capacities.
Our professional testing laboratories are equipped with cutting-edge metrology instruments. We employ dedicated, certified QC inspectors who manage quality at every phase—from incoming raw material checks to finished part dimensions. Our quality control methods include:
Precision lost wax cast components serve as the backbone for critical sub-assemblies globally. By integrating casting with precision CNC milling and turning, we provide high-performance solutions for demanding industries.
Our stainless steel investment castings (predominantly 316 and Duplex grade) provide outstanding corrosion resistance in marine systems. Typical products include propeller parts, deck fittings, anchor pivots, and underwater housings, which endure harsh saltwater environments without premature failure.
For modern combustion and electric vehicle segments, we manufacture lightweight, high-strength parts. Products include exhaust manifolds, brackets, transmission elements, and specialized components for buses, all meeting strict fatigue and wear life requirements.
Operating under high pressures and corrosive conditions, modern industrial valves depend on defect-free casting cavities. We cast valve bodies, discs, bonnets, and pump impellers with exceptional dimensional repeatability, minimizing downstream machining costs.
Consumer devices and home automation require clean, aesthetic finishes combined with complex internal features. We cast and finish structural parts, internal hinge mechanisms, and decorative hardware from high-conductivity aluminum and non-ferrous alloys.
For custom mountain bikes and competitive outdoor gear, we machine titanium and high-strength aluminum parts. These critical components, such as suspension pivots, brackets, and modified titanium screws, balance lightweight performance with excellent fatigue limit.
The global manufacturing footprint shows that South China, specifically the Dongguan industrial cluster, offers distinct supply chain advantages that shorten time-to-market while reducing procurement costs. Partnering with Dongguan SX Technology Co.,Ltd provides key benefits:
Providing FOB, CIF, and DDP shipments to North America, Europe, and Asia-Pacific regions.
Industrial casting processes are rapidly evolving. As a technology-focused manufacturer, we actively integrate next-generation manufacturing methods into our operations.
Combining near-net-shape casting blanks with automated multi-axis CNC machining centers eliminates unnecessary metal waste. This reduces processing times for tough metals like titanium and stainless steel by up to 40%.
Using digital twin mold flow analysis allows our engineers to forecast filling turbulence, temperature gradients, and potential shrinkage cavities before pouring, keeping tooling development right the first time.
Modern foundries focus on energy efficiency and material circularity. We reclaim and recycle wax patterns, reuse sand-ceramic materials, and install energy-efficient induction furnaces to reduce our overall carbon footprint.
Get expert answers to common questions about lost wax casting, material properties, machining limits, and procurement logistics.
Our standard casting tolerances comply with ISO 8062-3 DCTG6 to DCTG8. For raw castings, we hold dimensional tolerances of approximately ±0.15mm per 25mm. For tighter tolerance requirements (such as bearing seats or sealing grooves), we perform post-cast CNC machining to achieve precision tolerances down to ±0.005mm.
The silica sol casting process uses high-purity colloidal silica binder, providing superior dimensional stability, sharp detail definition, and a smooth surface finish (typically 3.2 Ra μm). The water glass process, while less expensive, yields rougher surface finishes (6.3–12.5 Ra μm) and has larger dimensional tolerances. At Dongguan SX Technology, we focus on the high-quality silica sol process to ensure components perform reliably in critical environments.
For marine and high-pressure fluid control applications, we recommend austenitic stainless steels like CF8M (equivalent to ASTM 316) or duplex alloys. These materials feature high chromium and nickel content, providing excellent resistance to pitting and crevice corrosion in chloride-rich environments.
Every shipment is accompanied by a full quality documentation package, which includes: Chemical Composition Analysis Reports (Spectrograph), Mechanical Test Reports (Tensile & Hardness), Dimensional Measurement Reports (CMM), and Non-Destructive Testing (NDT) certifications upon request.
We operate specialized CNC centers optimized for tough materials like titanium alloy (such as Ti-6Al-4V) and cemented carbide. Our engineering team designs custom fixtures and uses optimized tooling coatings to machine complex geometries with minimal tooling wear and maximum surface integrity.
Detailed listing of our custom-engineered parts, offering exceptional durability and precision across diverse industrial applications.
SX Machining
