New Approach to Multi-Material Processing in Selective Laser Melting
Author: Yu. Chivel | Physics Procedia 83 (2016): 891–895
Abstract & Highlights
Selective Laser Melting (SLM) technology enables the manufacturing of three-dimensional, multi-material functional parts by fusing metallic powder fractions with a high-powered laser. The method utilizes specialized recoating algorithms to prevent cross-contamination, allowing for the integration of distinct material regions within a single component. Reference: US Patent 12030253B2.
Innovations in Selective Laser Cladding: Conical Beams & DED Technologies
Author: Yu. Chivel | Procedia CIRP 74 (2018): 173–175
Description
New technology employs conical laser beams focused on both substrate and deposited material, enabling uniform laser energy absorption, reduced residual stress, and enhanced thermal efficiency. Experimental heads were constructed using conical optics that generate distributed focus zones for powder and wire streams. The design achieves advanced energy transfer and high-quality cladding even for multiphase and composite materials.
Note: Schematic/photo of the experimental laser cladding head is not available for display on this website. For technical references, see US Patent 11235423 or visit the Scientific Articles or Figures page.
This approach allows separate control of energy density for both the substrate and feed, thus reducing overheating and providing improved metallurgical bonding compared to conventional designs. The system is being developed for industrial surface modification, robotics, and additive manufacturing applications.
References
- Chivel Yu. Method and device for laser cladding, Patent US 11235423, 2022.
- Chivel Yu. Selective laser cladding with conical beams, Proc. LIM 2019.
High Efficient Industrial Laser Methods for Producing Powders
Author: Yu. Chivel | World PM 2024
Conical laser beams plus continuous optical discharge for nanopowder synthesis, atomization up to 500 kg/h, efficiency 0.5 kWh/kg. Laser centrifugal atomization: fastest industrial powder method. WO2023214214.
Atmospheric Plasma Flow Generation & Surface Coating
Author: Yu. Chivel
Hybrid plasma systems at atmospheric pressure: DC-plasma torch + electromagnetic accelerator. Enables high-velocity flows for industrial coating, powder spraying, ceramics.
Multi-Spectral High-Speed Pyrometer
Author: Yu. Chivel
Non-contact measurements 800–3500K, 4 wavelengths, high-res mapping and process control for metallurgy, ceramics, laser/plasma diagnostics. Applications: engines, crystals, furnaces.
ParticleWatch: Advanced Process Monitoring System
Author: Yu. Chivel
Monitors particle streams in spraying processes, temperature 1100–3500K, speed up to 2000 m/s. CCD camera, fiber optics, pulse-periodic image for process QA.
Ceramic Sintering in Selective Laser Additive Manufacturing
Authors: Yu. Chivel, A. Sudarev, V. Konakov
Nano-ceramics sintered by SLS for turbine parts, minimal shrinkage 0.1%, non-cooled operation up to 1900K. For jet engines and advanced material science.
