Related Experiment Video
Updated: May 10, 2025

Application of 3D Printing in the Construction of Burr Hole Ring for Deep Brain Stimulation Implants
Published on: September 7, 2019
Comparative Analysis of the Dimensional Accuracy and Surface Characteristics of Gears Manufactured Using the 3D
Jacek Sawicki1, Wojciech Stachurski2, Piotr Kuryło3
1Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland.
Abstract:
This article provides a comparative analysis of the dimensional accuracy and post-surface characteristics of gears produced by the 3D printing technique Direct Metal Laser Sintering (DMLS) from 1.2709 steel immediately after printing and after grinding and grinding treatment. The following tests were performed on the fabricated samples: metallography, hardness measurement, self-stress, surface roughness, and the gears' shape were dimensioned and measured. The results show that post-processing influences the distribution of residual stress and the printed model's hardness. The results show that heat treatment results in clear directionality marks and micropores, increasing the material's hardness to 54.3 HRC ± 0.6 HRC, indicating effective strengthening. Grinding significantly improved the holes' accuracy, changed the compressive intrinsic stresses to a tensile state, and reduced radial runout, improving gear geometries. In addition, it was noted that different results were obtained for roughness parameters depending on the gear tooth tested.
Related Concept Videos
Transmission Shafts: Problem Solving
Next, use bending moment diagrams for the shaft to...
Screw: Problem Solving
To evaluate the...
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Design of Transmission Shafts
Thin-Walled Hollow Shafts
Plastic Deformation in Circular Shafts

