Demiray, MAŞekerci, BGürgen, MKayacan, CBaykaşoğlu, C2026-03-312026-03-3120251300-18841304-4915http://dx.doi.org/10.17341/gazimmfd.1424568https://hdl.handle.net/11491/9471Purpose: The first purpose of this study is to reveal development process of an industrial type metal laser melting device with unique functions such as preheating/double sided recoater, focal length adjustment mechanism and double laser power source. Latter purpose is to investigate the manufacturing performance of developed device by manufacturing experimental single laser tracks from 316L powder. Theory and Methods: The development process of metal laser melting device is started with design of the subsystems such as substrate, powder spreading/feeding, laser optic and inert gas systems. Mathematical expressions were used and derived to select and implement laser optic components together. After construction of the device, the focal length was found by conducting single laser track experiments. Latter step was the comparison of experimental and theoretical beam diameter to ensure the quality and accuracy of the practical beam diameter based on mathematical laser-optic equations. During experiments, all possible laser powers were tried from 50 W to 500 W. Figure A gives the summary of the progress. Results: A metal laser melting device was successfully designed, manufactured and controlled. A trial-error focal length experiments were conducted to obtain experimental beam diameter as the same as theoretical one that is based on mathematical laser optic equations. Focal length was found as 465 and at 465 mm, dimension of the fused laser lines was investigated under the microscope and laser track dimensions were revealed for 316L material to provide the performance of device. Theoretical and experimental beam diameters were found consistent between 100 W-200 W. Conclusion: In this study, an industrial SLM device was developed. As a final step, performance and limits of the device were tested. According to the results above, this development/verification processes can be used and performance of a device can be estimated. On the other hand, unique subsystems proposed in this study can be beneficial to decrease disadvantages of the SLM method. On the other hand, laser optic equipments can be directly selected and implemented to any device by following this study.enSelective laser melting devicePreheating recoaterLaser trackLaser opticArticle40310.17341/gazimmfd.1424568WOS:001569394800006