Tianlei Zhang, Zilong Zhang, Peixin Li, Xiaoming Wang, Min Wang, Rongquan Zhu, Yaoshi Dang, Jian Cao, Junlei Qi. Selective Laser Melting Process and Structure Optimization of Invar Alloy Lens Tube[J]. Chinese Journal of Lasers, 2024, 51(10): 1002314

Search by keywords or author
- Chinese Journal of Lasers
- Vol. 51, Issue 10, 1002314 (2024)

Fig. 1. Lens tube shape structure for optical systems

Fig. 2. Particle size distribution and surface morphology of the optimized powder. (a) Particle size distribution curve; (b) statistical image of powder sphericity; (c) surface morphology of the powder

Fig. 3. SLM process test results. (a) Optimized powder spreading effect; (b) product surface quality

Fig. 4. Microscopic morphology of Invar alloy samples formed at different scanning intervals. (a)(c)(e)(g) Horizontal; (b)(d)(f)(h) vertical

Fig. 5. Microscopic morphology of Invar alloy samples formed at different scanning velocities. (a)(c)(e)(g) Horizontal; (b)(d)(f)(h) vertical

Fig. 6. Stress and strain simulation results of Invar alloy lens tubes. (a) Stress simulation of the original model; (b) strain simulation of the original model; (c) stress simulation of the model after topology optimization; (d) strain simulation of the model after topology optimization

Fig. 7. Optimization of the lens tube model, as well as stress and strain simulation after optimization. (a) Printing support of the original model; (b) printing support of the optimized model; (c) stress and strain simulation results after process optimization

Fig. 8. Invar alloy lens tube and test rods manufactured by SLM process. (a) Lens tube; (b) fracture location of the test rods; (c) test robs before and after thermal expansion test

Fig. 9. Three-dimensional scanning of the lens tube and structural deviation measurement results

Fig. 10. X-ray inspection results of Invar alloy tube. (a) X-ray scanning image; (b)–(f) residual stress detection points
|
Table 1. Chemical composition of Invar alloy powder
|
Table 2. Chemical composition of the optimized Invar alloy powder
|
Table 3. Physical properties of the optimized Invar alloy powder
|
Table 4. Setting of SLM parameters
|
Table 5. SLM parameters and mechanical property test results
|
Table 6. Mechanical properties of the test bars after heat treatment

Set citation alerts for the article
Please enter your email address