China Investment Casting Service & Product

High-Precision Lost Wax Casting and Multi-Axis CNC Machining Solutions for Crucial Engineering Applications Worldwide

Pioneering Metal Engineering Since 2014

Dongguan SX Technology Co.,Ltd

As a premier manufacturer specializing in high-precision investment casting (lost wax casting), multi-axis CNC machining, and comprehensive structural assembly, Dongguan SX Technology Co.,Ltd is committed to translating complex engineering layouts into reality. We manage projects from prototype casting to structural validation, delivering turnkey metallic solutions.

Our capabilities span diverse applications, including automotive assemblies, heavy-duty industrial valves and pumps, marine hardware, aerospace components, medical instrumentation, and consumer electronics. By utilizing advanced metallurgy, we process an array of materials including stainless steel, carbon steel, titanium alloys, aluminum alloys, copper alloys, and cemented carbides.

  • Advanced Metallurgy: Full melt traceability and spectral chemistry analysis for structural integrity.
  • Precision Tolerances: Investment casting tolerances aligned with ISO 8062 CT4-CT6, with secondary CNC machining achieving ±0.005mm accuracy.
  • Turnkey Sub-assemblies: Complete design integration, thermal treatment, surface finishing, and multi-component assembly.
Dongguan SX Technology Manufacturing Facility
Factory 4.0 Efficiency

China Factory 4.0: Supply Chain Resilience & Efficiency Advantages

Operating from China's premier industrial cluster in Dongguan allows us to merge advanced technological infrastructure with unmatched logistics capabilities.

Vertically Integrated Ecosystem

We co-locate raw materials sourcing, rapid tooling, wax pattern molding, shell building, dewaxing, pouring, and heat treating under unified operational controls. This integration eliminates intermediate transport risks and accelerates time-to-market.

Automated Shell Building

Using atmospheric-controlled, multi-axis robotic dipping systems, we guarantee consistent slurry coatings. This results in uniform shell structures, minimal dimensional deviation, and the elimination of human error in mold creation.

Mitigated Supply Risk

By securing direct supplier partnerships for vital alloying elements (such as Cr, Ni, Mo, and Ti), we shield global procurement schedules from unexpected raw material shortages or price volatility.

2014
Established Year
< 0.05%
Defect Rate Limit
5-Axis
CNC Capabilities
100%
NDT Testing Available
Broad Sector Support

Macro-Industry Engineering Solutions

Providing engineered castings designed to withstand high pressure, chemical corrosion, and extreme mechanical stress across diverse industries.

Valves, Pumps & Flow Control

We manufacture erosion-resistant valve bodies, impellers, and pump casings. Using alloys like CF8M (316 SS) and Duplex Stainless Steel, we protect internal components from corrosive media in chemical processing plants.

Deep-Sea Exploration Equipment

Utilizing high-strength titanium alloys, we engineer components capable of withstanding immense pressure (up to 600 bar). These components resist localized chloride-induced crevice corrosion and pitting.

Marine Hardware

We supply stainless steel deck hardware, anchors, cleats, and custom drive shafts. These components feature electrochemical polishing to protect against salt-spray corrosion in marine environments.

Automotive & High-Speed Transport

We produce engine brackets, suspension linkages, and custom components for electric drivetrains. Our processes achieve lightweight configurations, optimizing strength-to-weight ratios for modern transportation systems.

Consumer Electronics

For wearable devices, optical housings, and high-strength internal chassis, we offer thin-wall castings. These components are cast down to 1.0mm thickness and finished with high-precision post-CNC milling.

Medical Instrumentation

We manufacture biocompatible titanium and surgical-grade stainless steel implants, structural linkages, and robotic surgical components. Our products meet strict surface finish and bio-burden standards.

Investment Casting Technical Roadmap & Future Outlook

Integrating casting technology with digital controls to meet challenging geometry and metallurgical requirements.

Numerical Solidification Simulation

We utilize casting simulation software to analyze fluid dynamics and thermodynamic properties during pouring. By predicting hotspots, air entrapment, and dendritic shrinkage before creating tooling, we achieve sound, porosity-free castings.

Tooling-Free Rapid Prototyping

For low-volume production runs and rapid prototyping, we employ SLA 3D printing of photopolymer wax patterns. This enables our engineering team to supply cast components within days, bypassing traditional tooling processes.

Metallurgical Refinement

We implement vacuum-induction melting techniques for oxygen-sensitive materials, such as titanium alloys and superalloys. This minimizes gas inclusion defects and ensures the structural integrity of components in high-stress applications.

Quality is the Cornerstone

Metrology and Quality Assurance

Since 2014, we have maintained a strict quality management system to ensure that all cast and machined parts meet precise design specifications. We employ professional testing equipment and dedicated QC personnel, adhering to strict tolerances and international standards.

Our quality control protocols monitor production at every stage, including raw material verification, real-time molten metal chemistry analysis, dimensional inspection, and structural integrity testing.

  • Dimensional Verification: Coordinate Measuring Machines (CMM) and optical profile projectors verify complex CAD models.
  • Chemical Validation: Direct-reading optical emission spectrometers analyze chemical composition before every melt.
  • Non-Destructive Testing (NDT): Dye penetrant testing (PT) and magnetic particle inspection (MPI) detect micro-cracks and surface anomalies.
Production machinery unit 1
Precision testing workstation
Casting setup unit 3
Machining line unit 4
Finished parts verification area
Secondary CNC processing section
CMM Metrology Lab Testing Component
Worldwide Operations

Global Purchasing Demands & Localized Support

Managing overseas supply chains requires strong communication, technical support, and strict regulatory compliance.

Regulatory and ESG Compliance

All raw materials comply with RoHS and REACH regulations, avoiding the use of conflict minerals. We minimize emissions and recycle waste materials to align with international environmental and social governance standards.

DFM Advisory Engineering

Our engineers provide Design for Manufacturability (DFM) reviews to identify risk factors, such as uneven wall thickness, sharp corners, and deep recesses. These assessments help prevent solidification defects and lower tooling costs before mold creation.

Secure Logistics and Customs Operations

We provide full export documentation, custom-designed moisture-resistant packaging, and ocean/air freight options to ensure safe delivery to your warehouse.

Technical Resources

Technical Investment Casting & CNC Machining Q&A

Clear explanations of our technical capabilities, material limits, tolerances, and production practices.

1. What dimensional tolerances can Dongguan SX Technology achieve on investment castings?
Our standard lost-wax castings conform to ISO 8062 CT4 to CT6 tolerances. This allows us to achieve dimensional variations as tight as ±0.15mm for small features. When your application requires tighter tolerances (down to ±0.005mm), we perform secondary multi-axis CNC milling and turning on critical interfaces.
2. How do you prevent internal porosity and solidification defects in critical alloys?
We use computer-aided casting simulation software to analyze flow velocities, mold temperature gradients, and solidus-liquidus phases. This analysis helps our engineers optimize the gating system design, riser placement, and pouring temperatures. We also verify the internal soundness of parts using radiography (X-ray) and ultrasonic testing (UT).
3. What is the typical lead time for new tooling and initial sample approval?
Developing casting tooling and producing initial samples takes approximately 21 to 30 days, depending on the complexity of the geometry. Once you approve the sample, mass production runs are completed in 30 to 45 days. For rush design iterations, we can use 3D-printed wax patterns to bypass the tooling stage.
4. Which alloys does Dongguan SX Technology process, and what are their benefits?
We cast and machine a variety of metals. Stainless steels (304, 316, 17-4PH) provide corrosion resistance and durability. Carbon steels (WCB, 1020, 1045) offer cost-effective structural strength. Titanium alloys (Grade 5 / Ti-6Al-4V) provide a high strength-to-weight ratio and corrosion resistance for deep-sea and aerospace applications. We also process aluminum, brass, and cemented carbides.
5. Can you machine castings with complex geometries in-house?
Yes, our machine shop features modern 3-axis, 4-axis, and 5-axis CNC machining centers. This in-house capability allows us to perform post-casting milling, tapping, boring, and turning in a single setup, ensuring alignment and precise dimensions.