Latest breakthrough! 3500W free output blue semiconductor laser

The 3500W free output blue semiconductor laser beam is output in a free space manner, with a rectangular spot directly acting on the material surface without the need for fiber optics or laser processing heads. This laser has a wavelength of 455 ± 10nm, with continuously adjustable power and a maximum output power of over 3500W. It is mainly used for non-ferrous metal cladding, quenching, etc., to greatly improve processing efficiency and quality.

Figure 1: 3500W Free Output Blue Light Semiconductor Laser Cladding Sample

Experiment 1

Figure 2 (a-e) OM images of a single layer at different powers; (f) Geometric dimensions; (g) Fusion efficiency; (h) Comparison of fusion efficiency and other research results; (i) Schematic diagram of high-power infrared laser and (j) high-power blue laser processing

The Institute of Special Materials at Shanghai Jiao Tong University developed a 3500W, rectangular spot (7.5 mm2) blue laser additive manufacturing equipment based on Guangdong Institute of Hard Science and Technology and Zhuo Jie Laser. Using directional energy deposition technology, pure copper was successfully deposited on Inconel 718 chromium nickel iron alloy substrate, achieving a cladding efficiency of 62.84 mm2/s.

——Achieving ultra-high efficiency in directed energy deposition of pure copper on Inconel 718 substrate with a 3500 W blue laser,Materials Letters,Volume 372,2024.

Experiment 2

Figure 3 (a) B-LMD process (b) B-LMD process schematic diagram

Figure 4 (c) Comparison of tensile properties between B-LMD pure copper and other additive manufactured pure copper

The New Materials Research Institute of Guangdong Academy of Sciences, based on the 3500W, rectangular spot (7.5 mm2) blue laser additive manufacturing equipment developed by Guangdong Institute of Science and Technology and Zhuojie Laser, successfully deposited pure copper material on 316L stainless steel substrate through laser metal deposition process, with a density of 97.9%, tensile strength of 244 ± 9 MPa, yield strength of 158 ± 6MPa, all of which are the highest reported values so far. The elongation at break can reach 14.7 ± 0.8%, and the comprehensive performance is better than that of pure copper samples prepared by SLM and MEAM processes.

——Comprehensive study of microstructural evolution and strengthening mechanism of high-performance pure copper prepared by blue laser metal deposition (B-LMD), Materials Science and Engineering: A.

Source: KCTII Institute of Technology