Professional one-stop 3D printing services for copper alloys, enabling the fabrication of complex geometries while ensuring superior thermal and electrical conductivity, with support for custom manufacturing.
Cu alloys, high-temperature alloys, stainless steels, etc.
Cause
The reflectance of Cu in the red-light wavelength range (1064 nm) is significantly higher than that in the green-light wavelength range (524 nm).
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Post-processing technology
1. Wire EDM
After SLM printing, the part is firmly bonded to the metal substrate, and wire EDM is the critical process for precisely separating the part from the substrate. Utilizing the high temperatures generated by pulsed electrical discharges, this method achieves minimal deformation and exceptional precision, enabling the machining of hard-to-cut materials such as titanium alloys, copper alloys, and specialty steels. At the same time, it removes most of the solid supports, thereby maximizing protection of the printed build surface, preventing impact‑induced damage, and delivering a qualified rough‑machined blank for subsequent operations.
2. Grinding and Polishing
The surface of an SLM‑built part exhibits a texture characteristic of melted powder particles, resulting in high surface roughness. Grinding is primarily used to remove support residues, flash, and burrs. Polishing encompasses processes such as mechanical polishing, sandblasting, and bright finishing, which reduce surface roughness and enable a variety of aesthetic finishes, including matte, high-gloss, and aged effects.
3. Finish Machining
3D printing can produce complex geometries, but critical features such as assembly holes, mating surfaces, and threaded holes cannot achieve high‑precision tolerances directly. By employing precision machining processes like CNC turning and milling to machine key dimensions, mating surfaces, and threaded holes, dimensional accuracy can be improved to ±0.02–0.05 mm, meeting industrial standards for assembly, sealing, and jointing.
4. Heat Treatment
During the SLM manufacturing process, rapid laser melting and cooling lead to significant residual stresses within the part, which can readily result in deformation, cracking, and dimensional instability. Mitigation strategies include stress-relief annealing, hot isostatic pressing (HIP), and solution treatment followed by aging.
Why choose Asia Materials?
🧪 Powder developed and manufactured in-house
We operate an in-house atomization-based powder production line, enabling independent manufacturing of copper, titanium, specialty steel, and refractory metal powders. Particle size and oxygen content are rigorously controlled, ensuring batch-to-batch consistency and guaranteeing component quality at the source.
🔗 End-to-end integrated services
We have established a closed-loop process encompassing milling, SLM printing, wire EDM, polishing, CNC finishing, and heat treatment, eliminating the need for multiple external subcontractors. From design drawings to finished parts, we offer end-to-end delivery, significantly reducing lead times.
🎯 Advantages of Special Alloy Technology
Proficient in printing challenging materials such as high-strength, high-conductivity copper, titanium–aluminum alloys, and ODS steels; has overcome the difficulties of forming highly reflective copper alloys and maintains a well-established process library for specialty materials.
📚 Industry–University–Research R&D Capabilities
With a strong technical background in higher education, we offer customized alloy development and prototype fabrication for research purposes, seamlessly balancing small‑batch R&D trials with the production of industrial‑grade functional components.
✅ Dual Quality System
ISO 9001 and GJB 9001C national military standards system, with full process traceability; we can provide comprehensive test reports covering density, metallography, and mechanical properties, suitable for defense‑related energy projects.
📝 Extensive experience in project implementation
Covering military equipment, aerospace, wind-turbine components, and cultural‑creative reproductions, we excel at fabricating intricate structures featuring hollowed-out designs, thin walls, and lattice patterns.
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