Research data for Build Stability and Surface Integrity of Large-Scale SUS316L via SLM
Description
This dataset provides comprehensive experimental evidence and quantitative measurements regarding the influence of different support structure configurations (Cross, Line, and Pillar supports) on the build stability and surface integrity of large-scale SUS316L stainless steel blocks (80 × 60 × 30 mm) fabricated via Selective Laser Melting (SLM). The repository contains the following primary data: 1. Experimental Photographs: High-resolution images documenting the in-situ build process and post-print analysis. This includes visual evidence of structural failures (severe delamination and thermal warping) encountered with Cross and Line support configurations, as well as the successful fabrication achieved with the Pillar support architecture. 2. Raw Surface Roughness Measurements: Comprehensive data files containing arithmetic mean roughness (Ra), maximum peak height (Rz), and total profile height (Rt). These measurements were collected from 60 distinct locations across all six orientations of the successfully printed specimen using a high-precision Surfcom Nex 001 profilometer, strictly adhering to the ISO 4288:1996 standard. 3. Statistical Analysis: Processed data used to generate comparative plots, highlighting the significant disparity in surface quality between free-standing and support-interfaced surfaces. These data are intended to support the investigation into failure mechanisms driven by the Thermal Gradient Mechanism (TGM) and to provide a technical roadmap for determining machining allowances in industrial-scale metal additive manufacturing.
Files
Steps to reproduce
1. Model Design: A bulk block (80 × 60 × 30 mm) was designed using SolidWorks and converted to STL format with high-density tessellation. Support structures (Cross, Line, and Pillar) were established using iDEN160 software. 2. Material Preparation: SUS316L stainless steel powder (15-45 µm) was dried at 100°C for 2 hours before the build process. 3. Fabrication: Samples were printed on a ZRapid iSLM160 system under an Argon atmosphere (Oxygen < 0.2%). Process parameters: Laser power 180W, scanning speed 1200 mm/s, layer thickness 30 µm, and build plate preheated to 150°C. 4. Post-processing: The successfully printed Pillar-supported block was removed from the build plate. Cross and Line supported samples were documented at the point of failure. 5. Surface Measurement: Roughness parameters (Ra, Rz, Rt) were measured across 60 locations (10 points per face) using a Surfcom Nex 001 profilometer following ISO 4288:1996 standards. Specific cut-off lengths (Lr) of 2.5 mm (for fine surfaces) and 8 mm (for the bottom surface) were applied.
Institutions
- Thuyloi UniversityHanoi, Hanoi